Individualized Therapies Now Available for Drug Treatment of Hepatitis C
SAN DIEGO, Feb. 25, 2011 (GLOBE NEWSWIRE) — Scripps Health is one of the first health systems in the United States to offer genetic testing as part of its care for hepatitis C patients planning to undergo drug treatment.
The tests offer hope to the more than 4 million patients diagnosed annually in the U.S. with hepatitis C and could spare them from taking interferon, which is commonly prescribed. Interferon causes flu-like symptoms as a side effect and costs more than $50,000 annually. Instead, the genetic test determines whether patients have a common gene variant that predicts a favorable cure rate if they are treated with the drug combination therapy of pegylated interferon and ribavirin.
A manuscript describing this approach to treatment, authored by Paul J. Pockros, MD, clinical director of research at the Scripps Translational Science Institute, head of the Division of Gastroenterology and Hepatology and director of the Liver Disease Center at Scripps Clinic, will be published in the journal Drugs in March.
“This is a huge step forward in the movement toward individualized medicine,” said Dr. Pockros, “As a physician, knowing what drug therapies will have benefit and which ones won’t based on a patient’s IL28B genotype is significant because we are able to be more targeted in our approach to treatment.”
This is the first of numerous genetic tests that will accurately give doctors vastly improved data, leading to better prescription of drug treatments. Later this year, a second test will be available that will accurately predict anemia in hepatitis C patients taking the pegylated interferon and ribavirin drug combination. Anemia is one of the most common side effects of the regimen. This will allow doctors to modify the therapy before starting the regimen to prevent patients from developing this problematic side effect.
Genetic testing for hepatitis C patients carries significant implications for patient care, as there are more than 4 million infected people in the United States, most of them undiagnosed and untreated.
Scripps Clinic now routinely orders IL28B genotyping on all patients with Hepatitis C who are potential candidates for anti-viral therapy. If the patients have a favorable IL28B genotype and advanced fibrosis on liver biopsy, doctors can initiate therapy with the current standard of care. If patients have a less favorable genotype or they have mild fibrosis, doctors can recommend waiting for FDA approval of direct acting antiviral drugs to improve their chances of response.
Currently, LabCorps Diagnostics is performing the IL28B testing for Scripps patients, a procedure covered by most insurance plans. The results are transmitted to the treating physician in about one week and the treatment choice is tailored based on the patient’s likelihood to have a favorable response.
The hepatitis C genetic testing is the latest example of Scripps’ leadership in individualized medicine. Scripps doctors were the first to use genetic testing for cardiovascular patients planning to undergo elective stent procedures to determine if they have one or more of the common gene variants linked to an inability to metabolize the anti-clotting drug Plavix (clopidrogel). Plavix is the second-most commonly prescribed drug in the United States and is given to most patients after they receive coronary stents.
ABOUT SCRIPPS HEALTH
Founded in 1924 by philanthropist Ellen Browning Scripps, Scripps Healthis a $2.3 billion nonprofit community health system based in San Diego, Calif. Scripps treats a half-million patients annually through the dedication of 2,500 affiliated physicians and 13,000 employees among its five acute-care hospital campuses, home health care services, and an ambulatory care network of physician offices and 22 outpatient centers and clinics. Scripps has been recognized by Thomson Reuters as one of the Top 10 health systems in the nation for quality care. Scripps is also at the forefront of clinical research, genomic medicine, wireless health and graduate medical education. With three highly respected graduate medical education programs, Scripps is a longstanding member of the Association of American Medical Colleges. More information can be found at www.scripps.org.
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