Notwithstanding big-name lawyers and amicus support, E.I. du Pont de Nemours failed to convince the U.S. Supreme Court to review a lower court ruling against it in multidistrict litigation over a cancer-causing “forever chemical” known as C-8.

Denying DuPont’s petition for review Monday, the Supreme Court left in place the U.S. Court of Appeals for the Sixth Circuit’s affirmance of a judgment for a man who claimed his testicular cancer resulted from exposure to C-8 that the chemical company released into the environment.