GlaxoSmithKline (GSK) has submitted regulatory applications in the European Union and United States related to eltrombopag (Promacta/Revolade) and its use to increase platelet counts in patients with chronic hepatitis C virus infection and low platelets (thrombocytopenia), specifically, a variation to the Marketing Authorisation Application to the European Medicines Agency for Revolade (eltrombopag) as a treatment for thrombocytopenia in adult patients with chronic hepatitis C infection to enable the initiation of interferon-based therapy and during interferonbased therapy.

A supplemental New Drug Application to the US Food and Drug Administration for Promacta (eltrombopag) as a treatment for thrombocytopenia in adult patients with chronic hepatitis C infection to enable the initiation of interferon-based therapy and to optimise interferonbased therapy.

Eltrombopag, known by the brand name Promacta in the United States and Revolade in the European Union and other countries, is currently approved in 88 countries around the world as a treatment for thrombocytopenia in patients with chronic immune (idiopathic) thrombocytopenia.

Promacta may cause hepatotoxicity. Other risks for Promacta include: bone marrow reticulinformation and risk for bone marrow fibrosis, thrombotic/thromboembolic complications, hematologic malignancies, and cataracts.