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ALLY Trial Demonstrates 97% Hepatitis C Cure Rates Among Patients Coinfected with HIV After Ribavirin-Free Investigational 12-Week Regimen of Daclatasvir and Sofosbuvir

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Bristol-Myers Squibb Company (NYSE:BMY) today announced results from ALLY-2, a Phase III clinical trial evaluating the investigational once-daily combination of daclatasvir and sofosbuvir for the treatment of patients with chronic hepatitis C virus (HCV) coinfected with HIV – a patient population that historically has been challenging to treat in large part due to potential drug-drug interactions between the therapy regimens used to treat each infection.

“The results of ALLY-2 signal that nearly all HIV-HCV coinfected patients in the study could be cured of hepatitis C with a 12-week regimen on daclatasvir and sofosbuvir,” said David Wyles, M.D., ALLY-2 Lead Investigator and Associate Professor of Medicine in the Department of Medicine, Division of Infectious Diseases at the University of California San Diego. “The trial demonstrated the dosing flexibility afforded by the daclatasvir-sofosbuvir regimen did not require alteration of HIV medications because of potential drug-drug interactions. This is a paramount consideration for clinicians treating this patient population.”

Among ALLY-2 patients treated for 12 weeks (treatment-na”ive and -experienced), 97% (n=149/153) achieved cure (sustained virologic response 12 weeks after treatment; SVR12). The study met the primary endpoint, with 96% (n=80/83) of treatment-na”ive genotype 1 patients achieving SVR12. Treatment with daclatasvir in combination with sofosbuvir in this study showed high SVR rates, with no discontinuations due to adverse events, and no serious adverse events related to study medications throughout the treatment phase.

“While substantial strides have been made in the battle against hepatitis C, a significant number of patients with complicated disease and treatment histories need additional treatment options to help them achieve hepatitis C cure,” said Douglas Manion, M.D., head of Specialty Development, Bristol-Myers Squibb. “The ALLY-2 results show that daclatasvir paired with sofosbuvir produced high cure rates in this trial regardless of the coinfected patients’ HCV genotype.”

According to the Centers for Disease Control and Prevention (CDC), about one quarter of HIV-infected persons in the United States – approximately 300,000 people – are also infected with hepatitis C, and HCV infection progresses more rapidly to liver damage in people living with HIV.

In ALLY-2, high SVR rates occurred among all patients treated for 12 weeks, regardless of prior treatment experience, HCV genotype, cirrhosis status, concurrent combination antiretroviral therapy regimen, or race. African-American patients comprised 34% of study participants; in this patient demographic, SVR12 rates were 98% (n=49/50). ALLY-2 also included an 8-week arm; 38 of 50 treatment-na”ive patients with HCV achieved SVR12. However, study investigators concluded that further studies are needed to assess the potential of shorter-duration, all-oral treatment regimens.

Additional safety data demonstrated a low rate of Grade 3/4 lab abnormalities in the study: INR (1%), AST (0.5%), Tbili (4%), Lipase (3%).

About ALLY-2: Study Design

This Phase III open-label clinical trial randomized 151 treatment-na”ive and 52 treatment-experienced HCV (genotypes 1-4) patients coinfected with HIV-1 on a broad range of antiretroviral regimens, into 3 cohorts. Among treatment-na”ive patients, one cohort received daclatasvir 30, 60, or 90 mg (dose adjusted for concomitant antiretroviral therapy) plus sofosbuvir 400 mg once daily for 12 weeks, and another received the same dosage and combination for 8 weeks.

The treatment-experienced cohort also received daclatasvir 30, 60, or 90 mg plus sofosbuvir 400 mg once daily for 12 weeks. Daclatasvir was dose-adjusted to accommodate concomitant antiretrovirals: 30 mg with ritonavir-boosted PIs, 90 mg with NNRTIs except rilpivirine. All cohorts had follow-up through post-treatment week 24. The primary endpoint was the SVR12 rate among genotype 1 treatment-na”ive patients after 12 weeks of treatment. Patients with cirrhosis were permitted.

About Hepatitis C

Hepatitis C is a virus that infects the liver and is transmitted through direct contact with infected blood and blood products. Approximately 170 million people worldwide are infected with hepatitis C, with an estimated 2.7-3.9 million chronically infected in the United States. Up to 90 percent of those infected with hepatitis C will not spontaneously clear the virus and will become chronically infected. According to the World Health Organization, up to 20 percent of people with chronic hepatitis C will develop cirrhosis; of those, up to 20 percent may progress to liver cancer.

About Bristol-Myers Squibb’s HCV Portfolio

Bristol-Myers Squibb’s research efforts are focused on advancing late-stage compounds to deliver the most value to patients with hepatitis C. At the core of our pipeline is daclatasvir, a NS5A complex inhibitor which continues to be investigated in multiple treatment regimens and in patients with co-morbidities.

Daclatasvir was approved in Europe in August 2014, and more recently in Brazil in January 2015, for use in combination with other medicinal products across genotypes 1, 2, 3 and 4 for the treatment of chronic hepatitis C virus (HCV) infection in adults. Daclatasvir also is approved in Japan in combination with asunaprevir, a NS3/4A protease inhibitor. The daclatasvir+asunaprevir dual regimen is Japan’s first all-oral, interferon- and ribavirin-free treatment regimen for patients with genotype 1 chronic HCV infection, including those with compensated cirrhosis.

About Bristol-Myers Squibb

Bristol-Myers Squibb is a global biopharmaceutical company whose mission is to discover, develop and deliver innovative medicines that help patients prevail over serious diseases. For more information, please visit http://www.bms.com or follow us on Twitter at http://twitter.com/bmsnews.

Bristol-Myers Squibb Forward Looking Statement

This press release contains “forward-looking statements” as that term is defined in the Private Securities Litigation Reform Act of 1995 regarding the research, development and commercialization of pharmaceutical products. Such forward-looking statements are based on current expectations and involve inherent risks and uncertainties, including factors that could delay, divert or change any of them, and could cause actual outcomes and results to differ materially from current expectations. No forward-looking statement can be guaranteed. Among other risks, there can be no guarantee that daclatasvir will receive regulatory approval in the United States, or if approved, that it will become a commercially successful product. Forward-looking statements in this press release should be evaluated together with the many uncertainties that affect Bristol-Myers Squibb’s business, particularly those identified in the cautionary factors discussion in Bristol-Myers Squibb’s Annual Report on Form 10-K for the year ended December 31, 2014, in our Quarterly Reports on Form 10-Q and our Current Reports on Form 8-K. Bristol-Myers Squibb undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise.

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