Johnson & Johnson (JNJ)’s Janssen unit said it may explore widening cooperation on hepatitis C with Vertex Pharmaceuticals Inc. (VRTX) that may develop in tandem with a separate partnership with Medivir AB (MVIRB) on the disease. “We remain open to see if we can expand our collaboration,” Gaston Picchio, vice president of Janssen’s global clinical virology and hepatitic disease area, said in an interview today in Barcelona, where he’s attending the European Association for the Study of the Liver annual meeting. “Vertex has announced plans for developing interferon-free therapies. We are partners, so that puts us in a better position to be a part of that,” should studies prove to be promising.