GlaxoSmithKline is trying to expand the market for its Benlysta drug beyond lupus by launching a major study of the medicine as a treatment for a serious blood vessel disorder.
GSK acquired full control of Benlysta when it bought Human Genome Sciences for $3 billion last year. Current sales of the drug are modest, at 70 million pounds ($106 million) in 2012, but GSK hopes it will become a major seller.