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'Breakthrough' hepatitis C treatment was tested by Bon Secours liver specialist


Daily Press (Newport News, VA)

12-10-13

Dec. 07--On Friday, the Food and Drug Administration announced its approval of the new drug Sovaldi, sofosbuvir, for hepatitis C.

In clinical trials, the polymerase inhibitor, the first used in hepatitis C treatment, has shown a more than 90 percent success rate in curing the deadly virus that causes liver failure and cancer of the liver.

"It has gone from there being no treatment to almost complete eradication in 23 years," said Mitchell Shiffman, the medical director of the Liver Institute of Virginia, which has offices at Bon Secours Mary Immaculate Hospital in Newport News and Bon Secours St. Mary's Hospital in Richmond.

Shiffman has been researching hepatitis C since 1990. At that time, in the first interferon trials, the cure rate was 5 percent, he said. Over the past two years, Shiffman has treated more than 80 hepatitis C patients -- more than half on the Peninsula -- with sofosbuvir.

"Nearly all of them are cured," he said in a phone interview from Nashville, Tenn., where he was presenting a paper on the topic. "It's very, very potent."

The oral antiviral, manufactured by Gilead, also has a low resistance profile, meaning the virus doesn't return in most people. It is also the first drug found to be effective against some strains of hepatitis C without the need for co-administration with interferon. Interferon is widely known for its harsh side effects.

More than 3.2 million Americans are infected with hepatitis C.

"The challenge now is to identify the patients," said Shiffman, as fully 75 percent of those affected are unaware and may therefore seek treatment too late.

Last year the Centers for Disease Control recommended that everyone born between 1945 and 1965, who account for the vast majority of cases, be automatically screened for the disease. Early diagnosis and treatment can now prevent fatal liver damage.

"It's a challenge for primary care physicians. Every week an individual comes to the Liver Institute with advanced cirrhosis or incurable liver disease. They're not identified until they have a catastrophic illness. At that point treatment doesn't help," he said.

Hepatitis C is spread mostly through tainted blood. Often it is caught by the American Red Cross when screening blood donors. That's how Chesapeake resident Ken Mitchell, 55, learned that he was infected with type 1 -- both the most common, accounting for 70 percent of infections, and the most difficult to treat -- in 2000. He had no symptoms and initially chose to modify his lifestyle -- avoiding alcohol, Tylenol, and anything that might stress his liver -- rather than submitting to the harsh treatment regimen.

More than a decade later, in 2011, Mitchell joined a clinical trial with Shiffman to test an experimental drug. It didn't work. Then he tried a "rescue" regimen, 48 weeks of the same drug combination he'd been offered originally. The virus came back. Six months ago, he tried sofosbuvir, taking the oral antiviral pill daily in combination with ribavirin and once-weekly shots of interferon for 12 weeks. In the three months since, he continues to test clear of the disease that he contracted as a high school senior.

"This is an incredible breakthrough. It's going to rock the world," said Mitchell, noting the relatively short duration of treatment compared to the typical year-long regimen.

The success rates shown by sofosbuvir, a once-daily pill taken in combination with other drugs, was such that the FDA dubbed it a "breakthrough therapy" -- just the third drug to receive the designation -- and fast-tracked its review, according to Carol Billingsley, a public relations agent with Free Agents Marketing.

Two weeks ago, the FDA approved Olysio, simeprevir, a protease inhibitor for use in hepatitis C treatment; it joined others in the class, telaprevir and boceprevir. Those are only effective with genotype 1, require up to a year of treatment, and have a cure rate between 75 and 80 percent, according to Shiffman. In contrast, sofosbuvir works with all strains in just three months. Its cure rate with types 2 and 3, when used just with ribavirin, is 95 percent.

Shiffman anticipates that in the next two years there will also be an oral interferon-free treatment for type 1 as well.

"The future of hepatitis C treatment is incredibly bright and promising. The key is identifying it," he said. "We're on the verge of curing it 95 percent of the time."

Salasky can be reached by phone at 757-247-4784.

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(c)2013 the Daily Press (Newport News, Va.)

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Copyright Daily Press (Newport News, VA) 2013

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