( September 2, 2026, 2:23 PM EDT) -- CINCINNATI — The Sixth Circuit U.S. Court of Appeals on Sept. 1 ordered the Plaintiffs’ Executive Committee in the opioid multidistrict litigation to respond to a petition for a writ of mandamus filed by pharmacy benefit managers (PBMs) challenging an order allowing 800 plaintiffs to amend their complaints to add claims against the PBMs....