Gilead (GILD) Files BLA for Bulevirtide for Hepatitis Delta Virus Posted byZacks Equity Research November 22, 2021 Leave a comment on Gilead (GILD) Files BLA for Bulevirtide for Hepatitis Delta Virus Gilead (GILD) submits a biologics license application to the FDA for bulevirtide for the treatment of chronic hepatitis delta virus infection in adults with compensated liver disease.