USFDA approves Gilead Sciences Vemlidy sNDA for chronic hepatitis B virus infection in pediatric patients as young as Six
Foster City: Gilead Sciences, Inc. has announced that the U.S. Food and Drug Administration (FDA) has approved the supplemental new drug application (sNDA) for Vemlidy (tenofovir alafenamide) 25 mg tablets as a once-daily treatment for chronic hepatitis B virus (HBV) infection in pediatric patients six years of age and older and weighing at least 25 kg with compensated liver disease.
Vemlidy is a targeted prodrug of tenofovir that was approved by the FDA in 2016 as a once-daily treatment for adults with chronic HBV infection with compensated liver disease. In 2022, the FDA approved Vemlidy for the treatment of chronic HBV infection in pediatric patients 12 years of age and older with compensated liver disease. Vemlidy is recommended as a preferred or first-line treatment for adults with chronic HBV with compensated liver disease by the American Association for the Study of Liver Diseases (AASLD) and European Association for the Study of the Liver (EASL) guidelines.
“Chronic hepatitis B can have a significant and lasting impact on the health of children. If left untreated, hepatitis B can lead to liver cirrhosis and liver cancer,” said Chaun-Hao Lin, MD, Associate Professor of Clinical Pediatrics Krek School of Medicine of USC. “As a clinician, I am well aware of the critical importance of promptly treating this disease to avoid possible complications and liver damage. The clinical trial demonstrated that tenofovir alafenamide may represent an effective treatment option for children as young as six years old affected by this chronic disease.”
Vemlidy’s approval in this pediatric patient population is supported by Week 96 data from a Phase 2 clinical trial (Trial 1092) comparing treatment with Vemlidy 25 mg to placebo among 18 treatment-naïve and treatment-experienced patients aged 6 to less than 12 years weighing at least 25 kg (Cohort 2, Group 1). Participants in the Vemlidy group and in the placebo group who switched to open-label Vemlidy after Week 24 demonstrated progressive increases in the rates of virological suppression through Week 96 overall and within both study cohorts (children and adolescents).
“The expanded indication for Vemlidy for the treatment of children as young as six years old is a testament to the safety, tolerability and efficacy profile of this therapy,” said Frank Duff, MD, Senior Vice President, Virology Therapeutic Area Head, Gilead Sciences. “Effective and tolerable options for children require our best science and a dedicated focus. The work of our Gilead Pediatric Center of Excellence is responsible for coordinating pediatric clinical trials for treatments for cancer, HIV, hepatitis B, and COVID-19 and we will continue our research to help address unmet treatment needs for children.”
Vemlidy has a boxed warning in its product label regarding post-treatment severe acute exacerbation of hepatitis B.
Hepatitis B (HBV) is a serious disease that attacks the liver and can cause chronic (lifelong) infection, cirrhosis of the liver, liver cancer, and death in up to a third of patients. Hepatitis B is spread through infected blood or body fluids, sexual contact, injection drug use, or perinatally from mother to child. Early symptoms may include loss of appetite, fever, generalized aches and pains, fatigue, itching, urticaria (hives), and joint pain. The disease is often asymptomatic, which may lead to undiagnosed individuals. Later symptoms may include nausea and vomiting, halitosis (bad breath), dark brown urine, jaundice (yellowing of the skin and eyes), and right-sided abdominal pain (especially with external pressure or palpitation).
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