March 11, 2014

Bayer's Nexavar misses target in liver cancer trial

FRANKFURT Tue Mar 11, 2014 4:22am EDT

(Reuters) - Germany's Bayer said a final stage Phase III clinical trial of cancer drug Nexavar as an adjuvant therapy for liver cancer did not meet its main target.

Nexavar, or sorafenib, is made by Bayer and Onyx Pharmaceuticals, and is already approved to treat advanced kidney cancer and liver cancer that cannot be surgically removed.

Bayer is testing the drug, taken orally, as an additional treatment for liver cancer patients who had no detectable disease after surgery. It said on Tuesday that the trial did not meet its main goal of improving recurrence-free survival.

"We are disappointed that the trial did not meet its primary endpoint," said Joerg Moeller, member of the Bayer HealthCare Executive Committee. "However, we remain committed to exploring the full potential of sorafenib in all stages of liver cancer."

Bayer shares were down 0.3 percent in early trade, underperforming a 0.2 percent rise for German blue chips.

Liver cancer is the sixth most common cancer in the world with more than 780,000 cases diagnosed each year, Bayer said.

(Reporting by Victoria Bryan; Editing by Christoph Steitz and Mark Potter)

Source

Video: New Treatment Options for Hepatitis C in 2014

ColumbiaSurgery

Published on Mar 10, 2014

)

Between four and five million Americans currently have Hepatitis C (HCV), but due to the development of new drugs this will soon be curable.

On February 27, Dr. Robert S. Brown, Jr. recorded this webinar and answered viewer questions on these new therapies.

For more information on Hepatitis C or to contact Dr. Brown, call the Center for Liver Disease and Transplantation at 877-LIVERMD (877-548-3763) or visit http://www.livermd.org.

Source

March 10, 2014

Prices of new hepatitis C drugs are tough to swallow for insurers

Peovided by The L.A. Times

Hepatitis C drugs Sovaldi and Olysio offer much better cure rates than other therapies, but they can cost up to $1,000 a pill, a potentially staggering cost to taxpayers and health plans.

la-blm-gilead-milligan-jpg-20140309

Gilead Sciences says its new hepatitis C therapy, Sovaldi, helps avoid the long-term medical expenses related to liver failure, cancer and transplants. But some pills can cost up to $1,000 each. (Victor J. Blue, Bloomberg / February 11, 2014)

By Chad Terhune and Eryn Brown
March 9, 2014, 5:50 p.m.

A pair of new drugs to treat hepatitis C offer a cure for millions of Americans afflicted with the disease — but at a potentially staggering cost to taxpayers and health plans.

Until now, therapies for hepatitis C helped only about half of patients and posed numerous side effects, such as flu-like symptoms, anemia or depression. In comparison, clinical trials of Sovaldi and Olysio have shown cure rates of 80% to 90% with far fewer complications.

That progress, though, comes at a price.

A 12-week course of Sovaldi can cost $84,000, or about $1,000 a pill, and some patients may require two courses. Treatment with Olysio runs more than $66,000. Using either one, many patients wouldn't require significant treatment again.

"It could be the right thing to do clinically, but at this price, can we afford it?" said Steven Pearson, president of the Institute for Clinical and Economic Review, a nonprofit group in Boston that analyzes the effectiveness and cost of new treatments. "It's a tough ethical and financial quandary."

In a new report, the institute estimates it would cost $6.3 billion to provide the two drugs to Californians with more advanced liver disease from hepatitis C. The annual cost could top $18 billion if half of all California patients with hepatitis C received the medications.

Drugs for some types of cancer, multiple sclerosis and rare illnesses can carry similar price tags. But few of those drugs would be prescribed so widely. And the increased costs for new drugs are often passed along to consumers in the form of higher health insurance premiums.

Left unchecked, some hepatitis C infections result in liver damage, liver cancer or death. Chronic hepatitis C infection affects about 3 million people in the U.S., and it's the leading cause of liver transplants in the nation.

On Monday, a panel of medical experts will meet in San Francisco to examine the use of Sovaldi and Olysio, which federal regulators approved late last year, and to recommend treatment guidelines.

The discussion will revolve around which patients are the best candidates for these medications and whether doctors should advise other patients to wait until their disease worsens, given the high prices.

Those types of restrictions trouble some patient advocates who favor full access. Of the two drugs, Sovaldi is viewed as a potential blockbuster along the lines of the cholesterol-fighting Lipitor.

Employers and health insurers warn that Sovaldi and Olysio are just the beginning of other expensive specialty drugs coming to market. They say that their rapid growth could undermine efforts to rein in medical spending.

The pharmaceutical companies behind the hepatitis C drugs defended their pricing by noting that the medicines represent a major advancement compared with current treatments. Gilead Sciences Inc. in Foster City, Calif., sells Sovaldi, and Olysio comes from Janssen Therapeutics, a unit of healthcare giant Johnson & Johnson.

Both companies said discounts and other financial assistance are available to government health programs and low-income patients.

Gilead said the new therapies also help avoid the long-term medical expenses related to liver failure, cancer and transplants. A liver transplant, for instance, can cost more than $500,000, not including a lifetime of follow-up care.

"Sovaldi is a short-term treatment that results in very high cure rates that can avoid future costs related to disease progression or treatment failure," said Gregg Alton, an executive vice president at Gilead.

Craig Stoltz, a spokesman for Janssen, said the price of Olysio "reflects its value."

Medi-Cal officials said they don't know yet how many patients may need the new drugs. More than 1,500 Medi-Cal patients are prescribed drugs for hepatitis C now.

"These new drugs are expensive," said Medi-Cal spokesman Norman Williams. "Medi-Cal is currently negotiating with the drug manufacturers for a state supplemental rebate."

California said no decision has been made on requests from Medi-Cal managed-care plans to carve out these drugs from already negotiated rates and reimburse insurers separately for them.

Molina Healthcare Inc., a major Medicaid managed-care plan in California and 10 other states, has asked health officials across the country for guidance on how to proceed with patients.

"I'm scratching my head why the American taxpayer is being asked to pay such an enormous price for this drug," said J. Mario Molina, the company's chief executive.

WellPoint Inc., the nation's second-largest health insurer, said it costs nearly 50% more, on average, to treat hepatitis C patients on its state Medicaid plans since the newer drugs were introduced.

"While new drug treatments for hepatitis C have shown to be highly effective, these drugs could have a serious impact on premiums," said Charles Bacchi, executive vice president at the California Assn. of Health Plans, an industry trade group.

As with many new drugs, Medi-Cal is requiring prior authorization before patients can receive them. Some health insurers may require patients to try older, less expensive treatments first.

The potential pool of hepatitis C patients is expected to grow as more screening occurs. Federal officials have recommended that all baby boomers be tested for hepatitis C because researchers have found a higher prevalence of the disease among that group.

Hepatitis C can go undetected for years and many people show no symptoms. The transmission of the disease is often associated with intravenous drug use. But people have contracted it in the past through blood transfusions, transplants or, in some cases, sexual contact.

Thus far, existing patients have been able to receive the new treatments.

Uninsured low-income patients treated in Los Angeles County facilities have been receiving the drugs free under the manufacturers' assistance programs, said Dr. Mitchell Katz, director of the county Department of Health Services.

Project Inform, an HIV and hepatitis advocacy organization in San Francisco, said that callers to its help line have not reported trouble getting the new medicines.

But David Evans, director of research advocacy at Project Inform, said he's concerned that could change if insurers or public programs begin "rationing" therapy for only the sickest patients.

"We should be pushing all of the payers to give access," Evans said. "Don't punish the patients because they have hepatitis."

For many years, the standard treatment for hepatitis C patients was a combination of interferon and a drug called ribavirin. Starting in 2011, doctors added new antiviral drugs to the mix.

Like those medications, Olysio is approved for use with interferon and ribavirin.

But the U.S. Food and Drug Administration approved Sovaldi for use without interferon and ribavirin in certain cases. That has opened up the possibility of treating many patients who couldn't tolerate the side effects of interferon, said Dr. Rena Fox, a professor of medicine at UC San Francisco.

Sovaldi, Fox said, is the "true game changer."

Source

Daclatasvir plus asunaprevir for chronic HCV genotype 1b infection

Hepatology

Accepted Article (Accepted, unedited articles published online and citable. The final edited and typeset version of record will appear in future.)

Viral Hepatitis

Hiromitsu Kumada MD1, Yoshiyuki Suzuki MD1, Kenji Ikeda MD1, Joji Toyota MD2, Yoshiyasu Karino MD2, Kazuaki Chayama MD3, Yoshiiku Kawakami MD3, Akio Ido MD4, Kazuhide Yamamoto MD5, Koichi Takaguchi MD6, Namiki Izumi MD7, Kazuhiko Koike MD8, Tetsuo Takehara MD9, Norifumi Kawada MD10, Michio Sata MD11, Hidetaka Miyagoshi12, Timothy Eley PhD13, Fiona McPhee PhD13, Andrew Damokosh PhD13, Hiroki Ishikawa12, Eric Hughes MD13,*

DOI: 10.1002/hep.27113

Copyright © 2014 American Association for the Study of Liver Diseasews

Publication History
Accepted manuscript online: 6 MAR 2014 06:10AM EST
Manuscript Accepted: 28 FEB 2014
Manuscript Revised: 21 FEB 2014
Manuscript Received: 10 FEB 2014

Keywords: Direct-acting antiviral; nonresponder; interferon-ineligible; interferon-intolerant; all-oral

Abstract

All-oral combinations of direct-acting antivirals may improve efficacy and safety outcomes for patients with hepatitis C virus (HCV) infection, particularly those who are poor candidates for current interferon/ribavirin-based regimens. In this open-label, phase 3 study, 135 interferon-ineligible/intolerant and 87 nonresponder patients with chronic HCV genotype 1b infection were enrolled at 24 centers in Japan. Patients received daclatasvir 60 mg once daily plus asunaprevir 100 mg twice daily for 24 weeks. The primary end point was sustained virologic response 24 weeks after treatment (SVR24). This study is registered with ClinicalTrials.gov (NCT01497834). SVR24 was achieved by 87.4% of interferon-ineligible/intolerant patients and 80.5% of nonresponder (null and partial) patients; rates were similar in cirrhotic (90.9%) and non-cirrhotic (84.0%) patients, and in patients with IL28B CC (84.5%) or non-CC (84.8%) genotypes. Fourteen patients in each group (12.6%) discontinued dual therapy, mainly due to adverse events or lack of efficacy. Nine nonresponder patients received additional treatment with peginterferon/ribavirin per protocol-defined criteria. The rate of serious adverse events was low (5.9%) and varied among patients. The most common adverse events were nasopharyngitis, increased ALT and AST, headache, diarrhea, and pyrexia.

Conclusion: Interferon-free, ribavirin-free all oral therapy with daclatasvir and asunaprevir for 24 weeks is well tolerated and can achieve a high rate of SVR in patients with HCV genotype 1b who were ineligible, intolerant, or had not responded to prior interferon-based therapy. (Hepatology 2014;)

Source

Creating a media channel to fight Hepatitis C

Marketing case study 

10 Mar 2014 12:12

183354

SYDNEY, AUSTRALIA: NSW Health creates an interactive online party experience to give 18-24-year-olds a hard-hitting message about the risks of contracting Hep C.

Insight
Hepatitis C is often misunderstood as only a concern for "junkies", and those who associate with dirty needles. A key audience that had a misconception around hepatitis C was 18-24-year-olds. In fact only 5% saw themselves at any risk. (Source: TNS for NSW Government)

This demonstrated a problem, how can you hope to make a message stick with a famously hard-to-reach group when the message is about something they feel is someone else's problem? A big budget awareness campaign targeting all of the 18-24-year-olds in NSW wasn't an option; the budget was just $200k. Mediacom had to be clever with the money by closely relating the message to occasions where Hep C is contracted. This was the key task.

The agency needed to understand the times and places that young people were most at risk of contracting Hepatitis C. Research showed that an important setting for risk was parties, where people who were not regular drug users got caught up in the heat of the moment and ended up sharing a needle when recreational drug use escalated, as the party evolved.
It was clear that as a party developed they started making decisions based on different parameters.

This led us to a clear insight: Decisions that increase the risk of hepatitis C are made in the heat-of-the-moment, not when in a cold, considered state.

Strategy
Enter The Party. Delivering the Hepatitis C message in the most impactful way meant doing it when they were in a heat-of-the-moment mindset. You can't buy media at parties so the question was, how would the agency get people into a drug-sampling-party-immersed mindset in a government media campaign? It needed to put them in harm's way without being in harm's way.

Mediacom achieved the heat-of-the-moment mindset in a virtual way by basing the whole campaign online. Its audience being internet hungry 18-24-year-olds added further logic to this decision.

The campaign had two parts:

1. An immersive virtual party.

2. Online media and messaging inviting and tempting the audience to the party.
With a spend of just $200k the agency single-mindedly approached just one media partner, Mi9, to deliver the most added value. This media inventory and advertorials all pushed to the main part of the campaign; an interactive party experience that we created at entertheparty.com.au.

Execution
1. An Immersive Virtual Party: The agency created a realistic (Facebook integration so you were there with your friends), interactive (user-defined journey through the party) and appealing (styling, music and locations closely matched to real life parties), to ensure it was a party the audience wanted to go to. The results will show you that it was.

The party-goer had to make decisions that started tame- e.g. "do you want to hang with your friends in the kitchen or backyard"- and then escalated to the more risky and Hep C relevant- e.g. "do you want to get a home tattoo", cumulating with a scene in a bedroom with the question "would you share a needle?".

In this heat-of-the-moment, late-stage party mindset it delivered the key message about the situations in which the viewer would personally be at risk of contracting Hepatitis C. From here the party-goer had the option to re-enter the party, explore different routes, or share the party on Facebook.

2. How to get people to the party: Earned media was key but the Mi9 partnership was used to access relevant environments such as Zoo, Celebrity Fix, Music Fix, Cleo, Cosmo, and behavioural targeting to seek out young partygoers. This consisted of banner ads that were first person, real video shots of the party, as if you were looking right through the window of the house. They invited you to "enter the party".

Results
Brad Kemp, Senior Marketing Officer, NSW Health, said: "We loved the agencies unique thinking in answering this brief. We are currently investigating ways to roll out this idea to a larger audience.

\We look forward to the agency continuing to challenge our thinking, as work such as this really does change the way we think about communications."

The campaign was relevant to the target audience; 27% of NSW 18-24-year-olds agreed with the statement "Hepatitis C is relevant to me" after the activity compared to 5% who viewed themselves as being at risk before the activity. (Source: TNS for NSW Government Campaign Evaluation; January 2013)

It reached a wide audience despite a tiny spend; 20% of NSW 18-24-year-olds participating in the evaluation research recalled seeing the communication. (Source: TNS Campaign Evaluation; January 2013)

It made specific messages stick; 69% of young people exposed to the party reported being more informed of the specific factors to contracting Hep C. (Source: Millward Brown; October 2012)

It created a relevant and memorable environment; 65% said they would refer to this campaign if a friend ever suggested the idea of injecting drugs. (Source: TNS Campaign Evaluation; January 2013).

Source

Acute kidney dysfunction related to nonviral comorbidities in chronic HCV

By: MARY ANN MOON, Clinical Endocrinology News Digital Network

03/10/14

Among patients with chronic hepatitis C virus infection, viral factors such as viral load and HCV genotype "did not play any significant role in the causation of acute kidney dysfunction events" but known nonviral risk factors did, according to a report published online in the Journal of Clinical and Experimental Hepatology.

In a retrospective cohort study involving 468 patients with chronic HCV (mean age, 50 years) enrolled during a 1-year period at a single hepatology clinic and followed for 6 months to 3 years, 124 episodes of acute kidney dysfunction developed in 63 patients.

Such dysfunction was significantly more likely to develop in those who had comorbid diabetes (47.6% prevalence, compared with 16.5% prevalence in nondiabetic participants), hypertension (69.8% prevalence, compared with 38.8% prevalence in nonhypertensive participants), or a history of IV drug use (44.4% prevalence, compared with 29.4% prevalence in nonusers), said Dr. Sanjaya Kumar Satapathy, who was with the division of gastroenterology at New York Medical College during the study, and his associates.

"Acute volume depletion secondary to nausea, vomiting, diarrhea, and large-volume paracentesis accounted for the major bulk of patients with acute kidney dysfunction. ... In addition, infections (n = 23) and GI bleeding (n = 9), the majority of which occurred in patients with advanced liver disease, appeared to play a significant role in developing acute kidney dysfunction," the investigators wrote (J. Clin. Exp. Hepatol. 2014 [doi:10.1016/j.jceh.2014.01.004]).

In contrast, the prevalence of acute kidney dysfunction showed no relation to baseline viral load; viral genotype; or the patient’s sex, race, body mass index, HIV status, or history regarding alcohol abuse. A total of 68 of the 124 acute kidney dysfunction events (54.8%) resolved completely, with serum creatinine returning to baseline levels; there was partial recovery in another 34.7% of the events, and the remaining 10.5% of cases progressed to either chronic kidney disease or end-stage renal disease.

Although acute kidney dysfunction is a well-known complication of cirrhosis and liver failure, most cases in this study (76%) developed in patients who did not have decompensated or advanced liver disease, noted Dr. Satapathy, who is now with the University of Tennessee, Memphis, and his associates.

No funding sources or potential conflicts of interest were disclosed.

 

Source

Promising Treatments Herald New Era in Hepatitis C Treatment

Provided by BioNews Texas

Posted by: Irlanda J. Espinosa March 10, 2014

hepatitis-c

Recently, several studies presented at the Conference on Retroviruses and Opportunistic Infections (CROI) in Boston, have highlighted promising treatments for serious liver disease, with particular attention being paid to chronic infection caused by the liver-damaging Hepatitis C virus (HCV) and human immunodeficiency virus (HIV) co-infection.

For patients who are chronically infected by HCV and HIV simultaneously, there is a substantial increase in the risk of cirrhosis and liver decompression than from being solely infected by HCV. Several companies, such as Boehringer Ingelheim, have been developing oral treatment regimens with durations that are 12 weeks or shorter with lower or absent side-effects for patients with both diseases.

Merck & Co has developed a combination of oral drugs that are highly effective in treating HCV and HIV co-infected patients.  The available data of the ongoing clinical trials for some treatment regimens were presented this Wednesday at CROI, while it is expected more data will be released at the European medical meeting in April.

The regimen consists of the experimental Merck drugs, MK-5172 and MK-8742 (new classes of anti-viral medicines), both with and without ribavirin, in co-infected patients over a 12-week period.

At the end of the period, all 29 patients using the two Merck drugs plus ribavirin presented undetectable levels of HCV (considering this way those patients are cured). On the other hand, 90% of the patients who were under the Merck drugs without ribavirin appeared to have the HCV eliminated from their systems after the 12-week period.

Even when the most common side effects of the treatment were fatigue and headache, no patient discontinued treatment due to side-effects or medication intolerance.

Of course, in a model for addressing HCV infection or co-infection with HIV, the development of new treatments that have the potential to cure effectively 90% of patients with common strains of the virus in a short period of time, is just part of solving the problem. It is necessary to find a way to make these treatments accessible as well..

Source

March 8, 2014

Hepatitis C medicines must be made accessible faster than HIV drugs were

Provided by The Guardian

Posted by Philippe Douste-Blazy
Friday 7 March 2014 02.00 EST theguardian.com

It took decades for HIV/Aids drugs to reach the world's poorest – history must not be repeated with hepatitis C treatments

Hepatitis-C-011

The hepatitis C virus, new treatments for which are at an advanced stage in clinicial testing, but promise to be prohibitively expensive. Photograph: Bsip/UIG via Getty

A public health showdown is brewing over a virus that affects the lives of millions of people every year.

The face-off will involve activists on one side and pharmaceutical companies on the other. It will play out in the richest cities in North America and the poorest countries in Africa. The viral scourge at the centre of this brewing confrontation is spread through blood-to-blood contact, but is treatable with expensive medicines.

This scenario may remind some of the decades-long struggle to obtain access to life-saving medicines for HIV and Aids. But here we are talking about another public health threat: hepatitis C.

An estimated 150-180 million people worldwide are infected with hepatitis C, and up to 500,000 die every year. The virus attacks the liver, yet the vast majority of people are unaware they are infected because the initial stages have no symptoms. It is the long-term effects that can be the most devastating: cirrhosis, liver cancer and liver failure.

The showdown is over the cost and quality of medicines. Until recently, the only cure for hepatitis C involved an expensive combination of injections and tablets that lasted a year. In addition to having limited efficacy, this regimen caused serious side effects that deterred patients from finishing the full course. Now, new drugs are poised to enter the market that work more quickly, are more effective and may not require weekly injections. About 10 of these drugs have reached an advanced stage in clinical trials.

But battle lines are being drawn over the cost of the treatments. Two products were approved by the US Food and Drug Administration recently, including the first pill that does not require a complementary injection. The pill, sofosbuvir, costs $84,000 (£50,370) for a 12-week course. Echoing the concerns of HIV activists who demanded cheaper treatment, protesters point out that such prices will keep hepatitis C drugs beyond the reach of those in need.

The similarities with HIV and Aids do not stop there. Hepatitis C is a leading cause of death for people with HIV. Approximately 5.5 million people have both diseases, so just as people with HIV are living longer thanks to powerful medicines, some are being struck down by hepatitis C.

A decade ago, the high price of HIV treatment meant that access was limited in developing countries. Today, almost 10 million people in low- and middle-income countries are able to receive life-saving HIV medicines, thanks to generic competition slashing prices from $10,000 in the mid-1990s to just $140 a year. The success in providing HIV treatment to the world's poorest people can pave the way to ending hepatitis C.

Manufacturers of new hepatitis C medicines are likely to offer the poorest countries a less expensive version. But according to the Lancet medical journal, pharmaceutical firms will not offer discounts to middle-income countries they regard as emerging markets, where about 75% of people with hepatitis C live. For this reason, a diverse alliance of countries – Brazil, Colombia, Costa Rica, Egypt, Moldova and South Africa – sponsored a resolution at a recent meeting of the World Health Organisation, urging the international community to act quickly on hepatitis.

Governments, pharmaceuticals and civil society must work together. We need to learn from our experience with HIV and Aids and negotiate better prices from all manufacturers. Generic competition should be encouraged to bring prices down.

Pharmaceutical firms are starting to realise that they cannot leave people in poor countries behind. Initiatives such as the Medicines Patent Pool have allowed several major companies to share their patents, enabling affordable generic versions of their HIV medicines to be made. We need to see the same spirit of co-operation for hepatitis C.

We must also avoid a prolonged international showdown. Almost 20 years passed since the first HIV antiretrovirals emerged in the 1990s and the moment people in low-income countries began to get access. For the millions with hepatitis C – and for those who are unaware they have the disease – we must act faster.

Source

March 7, 2014

CROI 2014: HCV Abstract and Poster Presentation Coverage by Jules Levin (NATAP) – Updated March 26, 2014

21st Conference on Retroviruses and
Opportunistic Infections
Boston MA
March 3 - 6, 2014

Reported by Jules Levin

(All links open into new windows)

Source NATAP

One in 100 Americans has chronic hepatitis C infection

By Will Boggs MD
NEW YORK  Sat Mar 8, 2014 3:03am IST

(Reuters Health) - At least one percent of Americans are chronically infected with the hepatitis C virus, which over time can severely damage the liver, according to a new study.

"Hepatitis C has a severe impact on the health and well-being of millions of Americans, especially baby boomers (those born from 1945 through 1965)," Dr. Scott D. Holmberg told Reuters Health in an email. He worked on the study at the Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia.

"The new data from a nationally representative survey of the general United States population (the National Health and Nutrition Examination Survey, or NHANES) found about 2.7 million people have chronic hepatitis C infection," he added.

"This number should be considered a minimum estimate for those infected in the U.S., because some populations known to be at high risk for hepatitis C, such as those who are homeless or incarcerated, are not included in the sample," Holmberg said.

The hepatitis C virus (HCV) is spread through contact with contaminated blood.

Baby boomers represent about 81 percent of chronically infected people, Holmberg noted.

His team's study included roughly 30,000 people who participated in NHANES between 2003 and 2010. As part of the survey, their blood was drawn and tested for HCV.

The estimated prevalence of HCV infection was one percent among people ages six and older, which corresponds to 2.7 million people across the U.S.

Even more people had antibodies against the virus in their blood, suggesting they had been exposed to it in the past.

People with HCV were more likely than those who had never been infected to be in their 40s or 50s, male and black and to have been born in the U.S., the authors reported in the Annals of Internal Medicine. They were less likely be well-off or to have education past high school.

Among young and middle-aged adults, those with chronic HCV infection were more likely to have received a blood transfusion before mandatory viral testing began in 1992. They were also more likely to have ever injected illicit drugs or had 10 or more lifetime sexual partners than similarly aged people who had never had HCV infection.

"Undiagnosed hepatitis C places millions at serious risk of liver disease, cancer and death," Holmberg said. "Unfortunately, half or more of those with hepatitis C do not know they are infected."

He said it can be 20 or 30 years between when a person is infected with the virus and when symptoms related to hepatitis C begin to appear.

"This study underscores the importance of CDC and U.S. Preventive Services Task Force recommendations that all persons born between 1945 and 1965, who face a prevalence of chronic hepatitis C infection six times greater than other adults, should get tested at least once for hepatitis C virus," Holmberg said.

"Getting tested, knowing your status, and, if infected, getting linked to proper care and treatment are all essential to reducing the burden of hepatitis C," he added.

Chronic HCV is typically treated with combinations of anti-viral drugs.

"One finding of (this new) study was that only half of hepatitis C-positive participants aged 20 to 59 years reported a history of transfusion or illicit injection drug use," Mark H. Kuniholm told Reuters Health in an email.

Kuniholm, from Albert Einstein College of Medicine in Bronx, New York, has studied rates of HCV infection but wasn't involved in the new research.

The data reinforce the idea that only testing people who would seem to be at especially high risk "is unlikely to identify most U.S. individuals with hepatitis C," he said.

Kuniholm echoed the CDC recommendation for screening. "All U.S. adults, especially those adults born between 1945 and 1965, should be offered hepatitis C diagnostic testing," he said.

SOURCE: bit.ly/1e2JmUN Annals of Internal Medicine, online March 4, 2014.

Source

March 6, 2014

Antiviral therapy of hepatitis C in 2014: Do we need resistance testing?

Antiviral Research
Available online 25 February 2014
In Press, Uncorrected Proof — Note to users

Commentary

Maximilian David Schneider, Christoph Sarrazin

Highlights

  • Hepatitis C virus resistance-associated variants (RAVs) pre-exist in quasispecies and can be selected under drug exposure.
  • NS3/4A protease inhibitors and NS5a inhibitors have a low genetic barrier to resistance and a high level of cross-resistance.
  • No significant resistance concerns have been observed for nucleoside polymerase inhibitors.
  • Resistance testing can be useful in special cases, such as DAA-experienced patients, HCV-subtype 1a.
  • Combination therapy with different classes of DAA can overcome antiviral resistance in the future.

Abstract

The treatment of chronic hepatitis C has fundamentally changed since the approval of the first direct-acting antivirals (DAA) in 2011. In addition to telaprevir and boceprevir, in 2014 two new NS3 protease inhibitors (simeprevir and faldaprevir), one non-nucleoside polymerase inhibitor (sofosbuvir) and one NS5a replication complex inhibitor (daclatasvir) have expanded the treatment options for chronic hepatitis C. Resistance-associated variants (RAV) are naturally produced during the HCV life cycle. The frequency of RAVs within HCV quasispecies mainly depends on their replicational fitness. Variants conferring resistance to nucleos(t)ide analogues have not been detected, and the majority of NS3 protease-resistant variants are present at low frequencies (0.1–3%) before initiation of DAA-based therapies. However, the Q80K variant conferring resistance to simeprevir has been observed in 9–48% of untreated HCV genotype 1a-infected patients, leading to reduced SVR rates. Resistant variants are detectable in the majority of patients with treatment failure to NS3 protease inhibitor- or NS5a inhibitor-based antiviral therapy. Long-term follow-up studies by population-based sequence analysis have shown the disappearance of resistant variants in the majority of patients, with median times to loss of mutations of 4–64 weeks. For the nucleotide analogue sofosbuvir, the emergence of the S282T resistant variant has been observed only in single patients, with reversion to wild-type within several weeks. Data are sparse on retreatment of patients with the same DAA or the same class of DAAs. However, retreatment with a different class of DAAs after failure of NS3 protease inhibitor-based therapy has been successful in small studies. This article forms part of a symposium in Antiviral Research on “Hepatitis C: next steps toward global eradication.”

Keywords: Hepatitis C virus; Direct-acting antivirals; Drug resistance; Sequencing

Source

New study uses Lumosity games to detect subtle cognitive impairments in patients with cirrhosis

Provided by News-Medical.net

Published on March 6, 2014 at 12:10 AM

Peer-reviewed study published in the American Journal of Gastroenterology

A new study from the University of Washington has found that performance on Lumosity games can distinguish between patients with cirrhosis of the liver, pre-cirrhotic patients, and healthy controls. The study used Lumosity games as psychometric tests to detect subtle cognitive impairments in patients with cirrhosis. The study is published in the March issue of the American Journal of Gastroenterology.

Studies have found that an estimated 60-80 percent of cirrhosis patients experience cognitive dysfunction, which can range from subtle neurocognitive abnormalities in those with minimal hepatic encephalopathy (MHE) to overt hepatic encephalopathy (OHE), a toxic condition that can lead to confusion, fatigue, or coma. Clinical testing can detect cognitive changes in cirrhotic patients with OHE, but currently no gold standard exists for the clinical assessment of MHE.

"Subtle cognitive impairments in cirrhosis patients are commonly undiagnosed, and are associated with poor self-reported quality of life, driving accidents, falls, or the development of OHE." said George Ioannou, M.D., M.S., Associate Professor at the University of Washington School of Medicine, Division of Gastroenterology and Staff Physician at VA Puget Sound Health Care System, and senior author on the study. "This finding is interesting because it suggests a new, easily accessible and affordable approach to identifying early cognitive impairments in patients with cirrhosis, which can potentially improve quality of life and prevent the onset of OHE."

The study administered three types of psychometric tests in cirrhotic patients without OHE (n = 31), patients with pre-cirrhotic chronic liver disease (n = 28), and normal controls (n = 16). The tests included:

  1. The Number Connection Test A (NCT-A) presents test-takers with 25 numbers arranged in an arbitrary sequence that are to be connected as quickly as possible in the correct sequence.
  2. The Inhibitory Control Test (ICT) presents a random sequence of letters among which test-takers need to discern interchanging X's and Y's and press a button when either of these two letters follows the other.

  3. Five Lumosity games administered on an iPad, including Speed Match - an adaptation of the N-back that challenges speed and information processing; Color Match - an adaptation of the Stroop task that challenges flexibility and response inhibition; Memory Matrix - a visual pattern memory task that challenges memory and spatial recall; Lost in Migration - an adaptation of the Flanker task that challenges attention and selective attention; and Chalkboard Challenge - an arithmetic comparison task that challenges problem solving and quantitative reasoning.

    Unlike the NCT-A or ICT, Lumosity games were able to reliably differentiate cirrhosis patients without OHE from pre-cirrhotic patients. Specifically, the results for Color Match and Memory Matrix were found to be statistically significant in differentiating between those with cirrhosis and pre-cirrhotic patients (p = 0.009 and p = 0.04 for Color Match and Memory Matrix respectively), as well as between normal controls and those with cirrhosis (p = 0.04 and p = 0.04) when adjusted for age and educational attainment. Higher scores on these two games were also associated with a reduced likelihood of cirrhosis, suggesting the combination of Color Match and Memory Matrix may improve cirrhosis detection. Test-retest reliability, as measured by Pearson's r correlation coefficient, for each Lumosity game ranged from r = 0.75 to 0.84 compared to the NCT, where r = 0.75, suggesting repeatability of the Lumosity games.

    "We created Lumosity to be an accessible tool for both consumers and researchers, and we're excited that our cognitive training program can be used in a variety of ways to study cognitive function in specific populations," said Joe Hardy, Ph.D., VP of Research & Development at Lumosity. "This study is a novel use-case of Lumosity and we welcome additional research using Lumosity to detect subtle cognitive impairments in those with cirrhosis of the liver and in other conditions."

    Lumosity's research platform, the Human Cognition Project (HCP), works with researchers from around the world in an effort to better understand the workings of the human mind and brain. Researchers receive free access to Lumosity's tools, and in certain cases, limited data regarding performance on Lumosity's cognitive training games. Current research projects on Lumosity include topics such as decision-making, multitasking, nutrition, TBI, cancer/chemofog, schizophrenia, stroke, MCI, emotion regulation, aging, ADHD, and PTSD.

    Source: Lumosity

Source

Shorter Treatment Strategy Beats Hepatitis C

Published: Mar 6, 2014
By Ed Susman , Contributing Writer, MedPage Today

BOSTON -- A 6-week treatment regimen appeared to be as effective as the more standard 12 weeks of therapy for patients with hepatitis C virus infection, researchers reported here at the annual Conference on Retroviruses and Opportunistic Infections.

In a pilot study that treated 20 patients in each of three arms, all patients treated with the combination of sofosbuvir (Sovaldi, nucleotide NS5B inhibitor) 400 mg with ledipasvir (NS5A inhibitor) 90 mg once daily for 12 weeks achieved a sustained virologic response at 12 weeks' post-treatment (SVR12), reported Anita Kohli, MD, an infectious disease fellow at the National Institutes of Health Clinical Center in Bethesda, Md.

But she also noted that two regimens using the same backbone and adding either the investigative agent GS-9669 (non-nucleoside NS5B inhibitor) 500 mg once daily or GS-9451 (a protease/NS3/4 inhibitor) 80 mg once daily for 6 weeks had similar outcomes: 95% of patients on GS-9669 achieving an SVR12, and 100% of patients on GS-9451 achieving an SVR12.

The one patient in the study who failed to achieve an SVR12 relapsed before SVR4; that individual had stage 3 liver disease, a high viral load, and unfavorable genotype, Kohli said.

All patients in all 3 arms were naive to treatment for hepatitis C virus. All patients were included in the 12-week arm, but patients diagnosed with cirrhosis were excluded from the 6-week trials.

"These results are not statistically significantly different from each other," Kohli told MedPage Today at a press briefing sponsored by the conference organizers.

"We find these results very promising. This was a pilot study," Kohli said. "We will follow these patients out to 48 weeks to see if the results are maintained."

A cure in the context of HCV is a sustained virologic response -- defined as undetectable viral RNA at some prespecified point after ending therapy, usually 12 or 24 weeks.

"What we have learned from this trial is that we can treat patients for shorter durations of therapy and we see that 6 weeks is effective," Kohli said.

"Secondly, these regimens are very simple -- 1, 2, or 3 pills a day. Third, our patient population is one that is historically very difficult to treat -- more than 80% of the patients were African American, most had genotype 1a, most had high viral loads, 25% to 30% of the patients had advanced-stage liver disease.

"The reason we wanted to look at the short-duration therapies is because we think it is very important in treatment of hepatitis C globally in limited resource settings. We really need very simple treatments for the 150 million to 180 million people globally," she said.

All the treatment regimens avoided the use of interferon, once the mainstay of treatment of hepatitis C virus, but a therapy that is difficult to tolerate for many patients. The use of interferon-free directly acting antiviral agents is an emerging approach to improve the efficacy and tolerability of therapy for hepatitis C virus, Kohli said.

However, she noted that the efficacy of interferon and ribavirin-free regimens shorter than 8 to 12 weeks has not been reported. One study evaluating sofosbuvir, ledipasvir, and ribavirin for 6 weeks showed an SVR12 rate of only 68%, she said. She also noted that the optimal combination of directly acting antiviral agents not been established.

Press conference moderator Jean-Michel Pawlotsky, MD, PhD, professor of medicine at Hopital Henri Mondor Creteil/University of Paris-Est, told MedPage Today that, while the results of the SYNERGY trial look interesting, they are not ready for routine implementation.

"There are very small numbers in this study," he said. "We have to see how this will apply to real-life patients. The danger is always to undertreat patients. If the time is too short and it works in a trial and you start treating real-life patients you can have failures. So we really need to extend this trial. It is interesting because it shows that some people can be cured in a very short duration of treatment."

Pawlotsky said he would not be comfortable treating his patients in this manner without more extensive studies.

Ledipasvir is not currently approved in the U.S. Its manufacturer, Gilead, filed last month for FDA approval of the drug in a fixed-dose combination with sofosbuvir.

The study was funded by the National Institutes of Health.

Kohli disclosed no relevant relationships with industry.

Pawlotsky disclosed no relevant relationships with industry.

Primary source: Conference on Retroviruses and Opportunistic Infections
Source reference: Kohli A, et al "Combination oral, hepatitis C antiviral therapy for 6 or 12 weeks: Final results of the SYNERGY trial" CROI 2014; Abstract 27LB.

Source

BIT225 HIV/HCV Trial Patients Virus Free at Six Months

6 March 2014

The Manager Companies
ASX Limited
20 Bridge Street
Sydney NSW 2000

  • Study evaluated BIT225 in patients co-infected with HIV and HCV
  • All HCV genotype 3 patients completing treatment are virus-free at 24 weeks
  • Preliminary data from subset of patients shows benefit extends out to 48 weeks

Sydney, Australia, 6 March 2014 – Australian drug development company Biotron Limited
(ASX:BIT) today announced additional interim positive data from a key phase 2 trial of its lead
antiviral drug, BIT225, in patients co-infected with HIV and Hepatitis C virus (HCV).

Analysis of blood samples from patients indicated that all of the HCV genotype 3 patients completing treatment are virus free at the 24 week (6 month) time point. This extends previous data
that showed patients had undetectable virus levels at 12 weeks.

Response to treatment at this time point is generally a good indication of final outcome at 48 weeks. Preliminary data from patients who have completed 48 weeks of treatment indicate that they remain virus free at this key time point.

Under the protocol of this open label pilot study, 12 patients received IFN/RBV for 7 days before
commencing treatment with BIT225. They then received 300 mg BIT225 twice daily plus IFN/RBV
for 28 days. After that time, patients continued to take IFN/RBV for 48 weeks.

Biotron Managing Director Dr Michelle Miller commented; "This 24 week data further validates the
efficacy of BIT225 as a potential new therapy for HCV and, in particular, for this difficult to treat
group of HIV/HCV co-infected patients who typically have more serious HCV infection and lower
response rates to treatment with existing standard therapies."

In vitro assays have shown that BIT225 has pan-genotypic activity. Previous clinical trials of
BIT225 have focused on patients infected with the genotype 1 variant of the virus, which is the most
common genotype in Western populations. This data further extends the Company's clinical data
portfolio to include genotype 3, which is endemic in south-east Asia.

In HCV, BIT225 targets the p7 protein which is responsible for virus assembly. BIT225 also
impacts on the assembly of the HIV virus and specifically targets the virus in reservoir cells. No
existing therapy works in this way.

Dr Miller further commented; "Both the HIV and HCV viruses present substantial challenges and there is global demand for novel therapeutics. We look forward to progressing commercialisation of this important compound as a valuable new therapy that is synergistic with current and future treatment strategies."

Enquiries

Dr Michelle Miller
Managing Director
Biotron Limited
+61-2 9805 0488 +61-(0)412313329

Rudi Michelson
Monsoon Communications 
+61-3 9620 3333

Source

Faldaprevir NDA has been accepted for review by U.S. FDA as part of a combination regimen for patients with chronic hepatitis C

March 06, 2014

Boehringer Ingelheim Announces Phase 3 SVR12 Results in HCV/HIV Co-Infected Patients Treated with Faldaprevir

Additional drug-drug interaction data for faldaprevir combined with commonly prescribed HIV medications also presented at CROI 2014
Faldaprevir NDA has been accepted for review by U.S. FDA as part of a combination regimen for patients with chronic hepatitis C

For U.S. Media Only

Ingelheim, Germany and Ridgefield, CT, March 6, 2014 – Today Boehringer Ingelheim announced results from STARTVerso®4 in patients with HCV/HIV co-infection. Hepatitis C viral cure 12 weeks after the conclusion of treatment (SVR12) was achieved by 72% of all patients in the trial. Patients were enrolled in either 120mg or 240mg faldaprevir dose groups. Further, 80% of all patients were eligible for randomization to a shortened duration of treatment (24 versus 48 weeks) because they achieved protocol-defined early treatment success (ETS)* and 86% of these patients achieved SVR12. STARTVerso®4 is a Phase 3 trial that enrolled 308 hepatitis C (HCV) treatment-naïve or experienced patients with HCV/HIV co-infection and evaluated the efficacy and safety of the investigational compound faldaprevir in combination with pegylated interferon and ribavirin (PegIFN/RBV).

“The SVR12 data from STARTVerso®4 are encouraging, especially given the inclusion of patients with cirrhosis,” said Peter Piliero, MD, vice president, Clinical Development and Medical Affairs, Boehringer Ingelheim Pharmaceuticals, Inc. “Comprehensive data from our STARTVerso® clinical trial program, including data from patients with HCV/HIV co-infection, have been filed with the FDA as part of our New Drug Application for faldaprevir.”

In each faldaprevir dose group, 71% (120mg) and 72% (240mg) of patients achieved SVR12. SVR12 results were consistent across patients regardless of HCV genotype-1 subtype (GT1a or GT1b), presence of compensated cirrhosis, dose and duration of faldaprevir, and duration of PegIFN/RBV. In a post hoc analysis, 75% of patients with the Q80K variant achieved SVR12 compared with 71% of patients who did not have the variant.

Serious adverse events (AEs) were reported in 32 patients (10%). To date, 24 patients have prematurely discontinued faldaprevir due to AEs. The most frequent AEs in STARTVerso®4 were nausea (37%), fatigue (34%), diarrhea (27%), headache (25%) and weakness (23%). Patients will be followed to 24 weeks after the conclusion of treatment (SVR24).

In separate poster presentations at CROI, investigators described the results from analyses that evaluated drug-drug interactions of faldaprevir with common HIV medications, including: efavirenz, atazanavir/ritonavir, darunavir/ritonavir, raltegravir and tenofovir. In each of these analyses, there was no clinically relevant effect of faldaprevir on the pharmacokinetics of any of the HIV medications studied. Patients in STARTVerso®4 already taking ritonavir-boosted HIV protease inhibitors (darunavir or atazanavir) or efavirenz were enrolled into the 120mg and 240mg faldaprevir groups, respectively.

Boehringer Ingelheim HCV Development Update
The New Drug Application (NDA) for faldaprevir has been accepted for filing by the U.S. Food and Drug Administration (FDA). Faldaprevir is currently under review as a component of a combination antiviral treatment regimen for the treatment of chronic HCV infection in adult patients who are treatment-naïve or have been previously treated with interferon-based treatment, as well as those with compensated liver disease, cirrhosis, or HCV/HIV co-infection. The FDA target action date for faldaprevir is in the fourth quarter of 2014.

The NDA submission for faldaprevir is supported by Boehringer Ingelheim’s STARTVerso® (NCT01343888, NCT01297270, NCT01358864, NCT01399619) clinical trial program, a multi-study Phase 3 trial program that evaluated faldaprevir for 12 or 24 weeks in combination with pegylated interferon and ribavirin (PegIFN/RBV). The four trials that make up this program studied treatment-naïve, treatment-experienced, and HCV/HIV co-infected patients with chronic genotype-1 (GT1) HCV. The primary efficacy endpoint of each STARTVerso® trial is viral cure 12 weeks after the conclusion of treatment (SVR12).

In November 2013, Boehringer Ingelheim announced that the faldaprevir application for marketing authorization is under review by the European Medicines Agency (EMA). If authorized by the European Commission, faldaprevir could be available for marketing in the EU in the second half of 2014.

Following an assessment of the blinded Phase 3 trial data from HCVerso® 1 and 2 for the combination of deleobuvir, faldaprevir and ribavirin, Boehringer Ingelheim has decided to halt further development of deleobuvir-containing HCV regimens. Ongoing regulatory reviews of faldaprevir are not affected by the decision on the deleobuvir-containing regimens.

About Faldaprevir
Faldaprevir is an investigational, oral protease inhibitor that is specifically designed to target viral replication in the liver. Faldaprevir is an investigational compound that has not been approved by the FDA; its safety and efficacy have not been established.

About Boehringer Ingelheim in Hepatitis C Virus (HCV)
In partnership with the scientific community, our clinical trial program is rigorously designed to find answers to the challenges that HCV patients face, including those who are the most difficult to cure. Our pivotal HCV clinical trials for faldaprevir, STARTVerso®, included four trials that studied treatment-naïve, treatment-experienced, and HCV/HIV co-infected patients with chronic GT1 HCV.

Hepatitis C is a blood-borne infectious disease and a leading cause of chronic liver disease, transplant and failure that affects as many as 150 million people globally. In the United States, approximately 3.2-5.2 million people have chronic HCV infection. Since 1999 there has been a significant increase in deaths due to chronic HCV, which accounts for 15,000 deaths in the United States per year.

STARTVerso® is a registered service mark of Boehringer Ingelheim International GmbH.

About Boehringer Ingelheim
Boehringer Ingelheim Pharmaceuticals, Inc., based in Ridgefield, CT, is the largest U.S. subsidiary of Boehringer Ingelheim Corporation (Ridgefield, CT) and a member of the Boehringer Ingelheim group of companies.

The Boehringer Ingelheim group is one of the world’s 20 leading pharmaceutical companies. Headquartered in Ingelheim, Germany, it operates globally with 140 affiliates and more than 46,000 employees. Since it was founded in 1885, the family-owned company has been committed to researching, developing, manufacturing and marketing novel medications of high therapeutic value for human and veterinary medicine.

Social responsibility is a central element of Boehringer Ingelheim’s culture. Involvement in social projects, caring for employees and their families, and providing equal opportunities for all employees form the foundation of the global operations. Mutual cooperation and respect, as well as environmental protection and sustainability are intrinsic factors in all of Boehringer Ingelheim’s endeavors.

For more information please visit www.us.boehringer-ingelheim.com.
*ETS = protocol-defined early treatment success (week 4 below limit of quantification [BLQ] and week 8 below limit of detection [BLD]).

Source

March 5, 2014

Omega-3 Fatty Acids in the Prevention of Interferon-Alpha-Induced Depression: Results from a Randomized, Controlled Trial

Biological Psychiatry

Article in Press

Kuan-Pin Su, Hsueh-Chou Lai, Hui-Ting Yang, Wen-Pang Su, Cheng-Yuan Peng, Jane Pei-Chen Chang,  Hui-Chih Chang, Carmine M. Pariante

Received 24 September 2013; received in revised form 6 January 2014; accepted 11 January 2014. published online 27 January 2014.
Corrected Proof

Abstract

Background
Interferon (IFN)-α therapy for chronic hepatitis C virus infection is frequently associated with depression. The routine prophylaxis with antidepressants might expose patients to adverse effects, hence, the need for alternative preventive interventions. Omega-3 polyunsaturated fatty acids are safe and effective essential nutritional compounds used for the treatment of depression, putatively through an anti-inflammatory action. In addition, lower erythrocyte levels of omega-3 polyunsaturated fatty acids have been associated with an increased risk of IFN-induced depression.

Methods
We conducted a 2-week, double-blind, placebo-controlled trial comparing eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and placebo for the prevention of IFN-α-induced depression. A total of 162 patients consented to participate and were randomized to the study. All of the patients completed the 2-week trial; 152 participants were followed throughout the 24 weeks of IFN-α treatment and were included in the analysis.

Results
Compared with placebo, the incident rates of IFN-α-induced depression were significantly lower in EPA-treated but not in DHA-treated patients (10% and 28%, respectively, versus 30% for placebo, p = .037). Both EPA and DHA significantly delayed the onset of IFN-induced depression (week of onset: 12.0 and 11.7, respectively, versus 5.3 for placebo, p = .002). EPA and DHA were both well tolerated in this population. EPA treatment increased both EPA and DHA erythrocyte levels, but DHA only increased DHA erythrocyte levels.

Conclusions
EPA is effective in the prevention of depression in hepatitis C virus patients received IFN-α therapy. Our study confirms the notion that anti-inflammatory strategies are effective antidepressants in the context of depression associated with inflammation.

Key Words: Chronic hepatitis C virus (HCV), clinical trial, omega-3 polyunsaturated fatty acids (n-3 PUFAs), inflammation, interferon-alpha (IFN-α), major depressive disorder (MDD)

Source

Merck’s Investigational Hepatitis C Treatment Regimen MK-5172/MK-8742 Shows Robust Anti-HCV Activity in HIV/HCV Co-Infected Patients with HCV Genotype 1 Infection

Wednesday, March 5, 2014 4:15 pm EST

BOSTON--(BUSINESS WIRE)--Merck (NYSE:MRK), known as MSD outside of the United States and Canada, today announced new data from HIV/HCV co-infected patients in the ongoing C-WORTHY Study, a Phase 2 clinical trial evaluating the efficacy and safety of Merck's all-oral, once-daily regimen combining MK-5172, an investigational hepatitis C virus (HCV) NS3/4A protease inhibitor, and MK-8742, an investigational HCV NS5A replication complex inhibitor. In these co-infected patients, the administration of MK-5172/MK-8742 for 12 weeks resulted in robust HCV suppression, and a safety profile consistent with that observed for patients infected with HCV Genotype 1 infection (GT1) alone.

At 12 weeks, 100 percent (29/29) of co-infected patients who received MK-5172/MK-8742 and ribavirin (RBV), and 90 percent (26/29) of co-infected patients who received MK-5172/MK-8742 alone had HCV RNA levels of less than 25 IU/mL, versus 100 percent (13/13) in patients with HCV alone treated with MK-5172/8742. The data were presented at the 21st Conference on Retroviruses and Opportunistic Infections (CROI).

“We are encouraged by the potential of MK-5172/MK-8742 for the treatment of people living with HIV/HCV co-infection, where there remains a need for additional therapeutic options,” said Dr. Eliav Barr, vice president, Infectious Diseases, Merck Research Laboratories.

About the MK-5172/MK-8742 Data Presented at CROI

After 4 weeks of treatment, all co-infected patients showed a reduction in HCV RNA levels to below 25 IU/mL with or without RBV administration. HCV kinetics over the first 4 weeks of therapy were similar in patients with or without HIV co-infection.

Virologic Response: Intent-to-Treat Population

Capture

*One HIV/HCV co-infected patient had not yet reached TW12; HIV/HCV co-infected (RBV-free) arm: 1 lost to follow-up (HCV RNA undetectable at the last visit on record); 2 breakthroughs with low blood levels of MK-5172 and/or MK-8742; HCV mono-infected (RBV-containing) arm: 3 early discontinuations (day 3 [detectable at the last visit] and days 22 and 35 [undetectable at the last visit]).

There were three treatment failures in the HIV/HCV co-infected study arms; one subject completed the treatment regimen but was lost to follow-up (HCV RNA undetectable at the last visit on record); and two co-infected subjects with low pharmacokinetic levels of MK-5172 and/or MK-8742 experienced virologic breakthrough at the 8 week time point (both cases with low blood levels of MK-5172 and/or MK-8742).

The most common adverse events observed in this cohort were fatigue (7%) and headache (8%). The incidence of these adverse events was not increased in patients with HIV. No co-infected patients discontinued due to either an adverse event or study medication intolerance.

About HIV/HCV Co-Infection

Globally, approximately seven million patients are co-infected with HIV and HCV. HCV is the leading cause of morbidity and mortality among those living with HIV-1, and compared to the general population, the overall prevalence of HCV infection is higher among those infected with HIV-1. Furthermore, HIV/HCV co-infected patients have a three times higher rate of progression to cirrhosis and a six times higher risk of hepatic decompression than HCV patients infected with HCV alone, underscoring the need for new therapeutic options for this patient population.

About the C-WORTHY Clinical Trial

C-WORTHY is a randomized, dose-responsive, parallel-group, multiple-site, open-label trial comparing different patient populations exposed to different durations of treatment of MK-5172 (100 mg QD) in combination with MK-8742 (50 mg QD) with or without RBV in patients with chronic HCV infection. A total of 450 patients with HCV GT1 and HCV RNA levels of ≥10,000 IU/mL have been enrolled in C-WORTHY and randomized across 16 arms to examine difficult-to-treat subpopulations.

The primary objective of C-WORTHY is to evaluate the safety and efficacy of MK-5172 in combination with MK-8742 with or without RBV as assessed by the proportion of patients achieving sustained virologic response at 12 weeks (SVR12) in treatment-naïve patients and more complex patient groups including prior peginterferon alfa and ribavirin treatment failures, cirrhotic patients and co-infected patients. The aim of the HIV/HCV co-infected arms is to compare on-treatment HCV RNA responses (defined as proportion of patients with HCV RNA <25 IU/mL) in GT1 HIV/HCV co-infected patients treated with MK-5712/MK-8742 with or without RBV with those in mono-infected patients.

In the HIV/HCV co-infection arms, 59 treatment-naïve, non-cirrhotic, GT1 HIV/HCV co-infected patients on a stable antiretroviral regimen (raltegravir + tenofovir or abacavir with either 3TC or FTC) were examined. These subjects were randomized at a 1:1 ratio to receive 12 weeks of MK-5172 (100 mg QD) administered concomitantly with MK-8742 (50 mg QD), with or without twice daily (BID) RBV.

Additional data from Merck’s Phase 2 program for MK-5172/MK-8742 will be presented at the 49th Annual Meeting of the European Association of the Study of the Liver, April 9-13 in London. Details on the C-WORTHY Study, as well as additional Phase 2 trials for MK-5172 and MK-8742, can be viewed on www.merck.com/clinical-trials.

In October 2013, Merck announced that the U.S. Food and Drug Administration (FDA) granted Breakthrough Therapy designation to MK-5172/MK-8742 for treatment of chronic HCV infection.

About Merck

Today's Merck is a global healthcare leader working to help the world be well. Merck is known as MSD outside of the United States and Canada. Through our prescription medicines, vaccines, biologic therapies, and consumer care and animal health products, we work with customers and operate in more than 140 countries to deliver innovative health solutions. We also demonstrate our commitment to increasing access to healthcare through far-reaching policies, programs and partnerships. For more information, visit www.merck.com and connect with us on Twitter, Facebookand YouTube.

Merck Forward-Looking Statement

This news release includes “forward-looking statements” within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995. These statements are based upon the current beliefs and expectations of Merck’s management and are subject to significant risks and uncertainties. There can be no guarantees with respect to pipeline products that the products will receive the necessary regulatory approvals or that they will prove to be commercially successful. If underlying assumptions prove inaccurate or risks or uncertainties materialize, actual results may differ materially from those set forth in the forward-looking statements.

Risks and uncertainties include but are not limited to, general industry conditions and competition; general economic factors, including interest rate and currency exchange rate fluctuations; the impact of pharmaceutical industry regulation and health care legislation in the United States and internationally; global trends toward health care cost containment; technological advances, new products and patents attained by competitors; challenges inherent in new product development, including obtaining regulatory approval; Merck’s ability to accurately predict future market conditions; manufacturing difficulties or delays; financial instability of international economies and sovereign risk; dependence on the effectiveness of Merck’s patents and other protections for innovative products; and the exposure to litigation, including patent litigation, and/or regulatory actions.

Merck undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise. Additional factors that could cause results to differ materially from those described in the forward-looking statements can be found in Merck’s 2013 Annual Report on Form 10-K and the company’s other filings with the Securities and Exchange Commission (SEC) available at the SEC’s Internet site (www.sec.gov).

Contact:

Merck
Media:
Caroline Lappetito, 267-305-7639
or
Ian McConnell, 908-423-3046
or
Investors:
Carol Ferguson, 908-423-4465
or
Justin Holko, 908-423-5088

Source

Can low-dose interferon prevent relapse of hepatitis C virus infection?

PUBLIC RELEASE DATE: 5-Mar-2014
Contact: Vicki Cohn
vcohn@liebertpub.com
914-740-2100
Mary Ann Liebert, Inc./Genetic Engineering News

New Rochelle, NY, March 5, 2014—Chronic hepatitis C virus (HCV) infection can lead to serious diseases such as cirrhosis and cancer of the liver, so viral clearance and prevention of relapse are important treatment goals. Low-dose oral interferon may reduce the risk of HCV relapse in patients with mild liver fibrosis according to a study published in Journal of Interferon & Cytokine Research, a peer-reviewed publication from Mary Ann Liebert, Inc., publishers. The article is available free on the Journal of Interferon & Cytokine Research website.

In "A Double-Blind Randomized Controlled Study to Evaluate the Efficacy of Low-Dose Oral Interferon-Alpha in Preventing Hepatitis C Relapse," Chuan-Mo Lee and coauthors from several universities and hospitals in Taiwan present the results of a clinical trial comparing the effects of 24 weeks of treatment with two doses of oral interferon-alpha or placebo in patients who achieved viral clearance after successful HCV therapy.

"This is a highly significant study relevant to the optimal use of IFN for HCV treatment," says Co-Editor-in-Chief Ganes C. Sen, PhD, Chairman, Department of Molecular Genetics, Cleveland Clinic Foundation, Ohio.

###

About the Journal

Journal of Interferon & Cytokine Research (JICR), led by Co-Editors-in-Chief Ganes C. Sen, PhD, and Thomas A. Hamilton, PhD, Chairman, Department of Immunology, Cleveland Clinic Foundation, is an authoritative peer-reviewed journal published monthly online with Open Access options and in print that covers all aspects of interferons and cytokines from basic science to clinical applications. JICR is an official journal of the International Cytokine and Interferon Society. Complete tables of content and a sample issue may be viewed online on the Journal of Interferon & Cytokine Research website.

About the Publisher

Mary Ann Liebert, Inc., publishers is a privately held, fully integrated media company known for establishing authoritative peer-reviewed journals in many promising areas of science and biomedical research, including Viral Immunology, AIDS Research and Human Retroviruses, and DNA and Cell Biology. Its biotechnology trade magazine, Genetic Engineering & Biotechnology News (GEN), was the first in its field and is today the industry's most widely read publication worldwide. A complete list of the firm's 80 journals, books, and newsmagazines is available on the Mary Ann Liebert, Inc., publishers website.

Source

New drugs trump interferon in HCV therapy

By: NEIL OSTERWEIL, Family Practice News Digital Network

03/05/14

The era of interferon and ribavirin in the treatment of hepatitis C viral infections appears to be drawing to a close, and few clinicians will mourn the passing of the effective but highly toxic combination, investigators said at the Conference on Retroviruses and Opportunistic Infections.

In patients with hepatitis C virus infection alone or HCV with HIV coinfection, a host of new interferon-free drugs and new combinations are transforming therapy, reported Dr. Jean-Michel Pawlotsky, professor of medicine at the University of Paris-Est.

"Hepatitis C is living a real therapeutic revolution. Everything is changing very fast. We’re now getting infection cure rates higher than 90% with the classes of drugs we have," he said at a briefing.

STARTVerso4

With all of the drugs, the sustained virologic response (SVR) rates "are exactly the same in coinfected patients as they are in monoinfected patients," said Dr. Douglas Dieterich of Mt. Sinai Medical Center, New York.

RTEmagicC_6cjxk9s8_99753.photo.jpg

Courtesy US. Dept of Veterans Affairs
A host of new interferon-free drugs and new combinations are transforming therapy for patients with hepatitis C viral infections, says Dr. Jean-Michel Pawlotsky.

For example, a combination of the protease inhibitor faldaprevir with pegylated interferon alfa-2a plus ribavirin (PR) produced SVR rates at week 4 of follow-up (SVR4) of 74% in HCV/HIV coinfected patients, said Dr. Dietrich, a principal investigator for the STARTVerso4 trial.

In this phase III open-label trial, 308 patients with HCV/HIV coinfection who were treatment naive or relapsed after prior interferon-based therapy were randomly assigned to receive faldaprevir 120 mg daily for 24 weeks or 240 mg for 12 or 24 weeks according to on-treatment response. In both arms, faldaprevir was given on a PR backbone, with duration guided by response to therapy.

For the primary endpoint of SVR12, the investigators saw a 72% rate, with no significant difference between the two dose groups, compared with approximately 80% in monoinfected patients in other phase III studies. There was also no difference in efficacy between patients with or without cirrhosis, he said.

Adverse events included mild hyperbilirubinemia in some patients and interferon side effects.

Simeprevir in coinfection

Dr. Dietrich was also the lead on study C212, which looked at simeprevir (Olysio) on a PR backbone in coinfected patients. The results were similar to those seen with faldaprevir (73.6% overall SVR12).

Interestingly, the presence of the simeprevir-resistant q80K polymorphism did not make a difference in response rates, he said. Among monoinfected patients in prior studies, those with q80k polymorphism had significantly lower SVR rates. The adverse events were also similar to those seen in patients with monoinfection.

PHOTON-1

The PHOTON-1 trial evaluated the first interferon-free regimen (sofosbuvir plus ribavirin) in patients with HCV genotypes 1-3 and HIV.

In this study, patients with HCV and stable HIV infection received sofosbuvir 400 mg and ribavirin 1,000-1,200 mg daily. Treatment-naive patients with HCV genotype 1 and treatment-experienced patients with genotypes 2 or 3 received treatment for 24 weeks, while treatment-naive genotype 2/3 patients received 12 weeks of treatment. Patients on multiple antiretroviral (ART) regimens and those with compensated cirrhosis were included in the study.

The primary efficacy endpoint, SVR12, was achieved in 88% of treatment-naive genotype 2 patients and 67% of genotype 3 patients. In genotype 1 patients, the SVR was approximately 70%, Dr. Dietrich said.

Adverse events were general and limited to anemias, headache, and other symptoms commonly seen with HCV therapies, he added.

SYNERGY trial

Dr. Anita Kohli presented final results from the SYNERGY trial, which looked at combination oral HCV therapy for 6 or 12 weeks (SVR4 results from this trial were presented at the 2013 Liver Meeting).

In this phase II prospective cohort study, 60 treatment-naive patients with HCV genotype 1 were enrolled into one of three arms to receive either sofosbuvir 400 mg with ledipasvir 90 mg once daily in a fixed-dose combination for 12 weeks (arm A); the same fixed-dose combination plus the non-nucleoside NS5B inhibitor GS-9669 500 mg/day for 6 weeks (arm B); or the fixed-dose combination plus the NS3 protease inhibitor GS-9451 80 mg/day for 6 weeks.

The SVR12 rate among the patients on sofosbuvir/ledipasvir alone (arm A) was 100%, the rate in arm B was 95%, and the rate in arm C was 100%.

"We find these results very promising," said Dr. Kohli of the National Institutes of Health.

She noted that all patients in the trial were treatment naïve, and that all stages of liver disease were included in the 12-week treatment arm, but cirrhotic patients were excluded from the 6-week arms.

"These regimens are very simple. They’re one, two, or three pills a day," she noted. In addition, "our patient population is one that has been historically very difficult to treat, that is, predominantly African American," she noted.

Most of the patients had genotype 1a with a high viral load, and 25%-30% of patients in all treatment arms had advanced-stage liver disease, she added.

PEARL-III

The PEARL III trial looked at 419 treatment-naive, noncirrhotic patients with HCV genotype 1b, who were randomly assigned to receive either a ritonavir-boosted protease inhibitor (ABT-450) with ABT-267, which is an inhibitor of HCV NS5A, coformulated into a single pill; or ABT-333, a non-nucleoside polymerase inhibitor, with or without ribavirin.

In the ribavirin-containing arm, SVR12 was 99.5%, compared with 99% among controls. There was only one virologic failure in the study, and two patients who did not achieve SVR4 were lost to follow-up at week 12, noted Dr. Daniel Cohen of AbbVie Pharmaceuticals.

Adverse events included predominantly mild headache and fatigue in about 25% of patients, with slightly more events seen in the ribavirin combination arm.

STARTVerso4 was sponsored by Boehringer Ingelheim. C212 was sponsored by Janssen. SYNERGY was supported by the National Institutes of Health and Gilead Sciences. Dr. Cohen is employed by AbbVie, which sponsored PEARL III.

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