( October 5, 2026, 3:16 PM EDT) -- CINCINNATI — The Ohio federal judge overseeing the national opioid multidistrict litigation failed to conduct the individualized diligence inquiry required by Federal Rule of Civil Procedure 16 and abused his discretion by allowing approximately 800 plaintiffs to belatedly amend their complaints to assert claims against pharmacy benefit managers (PBMs), a Sixth Circuit U.S. Court of Appeals panel held Oct. 2 in granting mandamus relief....