“P023 | SUSTAINED CLINICAL RESPONSE TO ATOGEPANT AFTER FAILURE OF FOUR ANTI-CGRP MONOCLONAL ANTIBODIES IN HIGHLY RESISTANT CHRONIC MIGRAINE: G. Difonzo, C. Rita Tamborino, F. Domenico Pellicano, A. Fallacara, D. Paolicelli, M. Pia Prudenzano | Headache Center, ‘L. Amaducci’ Neurological Clinic, Policlinico General Hospital, Bari, Italy” (2026) Confinia Cephalalgica, 36(s1). doi:10.4081/cc.2026.15979.