“PO-28 | Sex Differences in the Response to Rimegepant for the Treatment of Acute Migraine Attacks – Insights from the Multicenter GAINER Study: Raffaele Ornello,1 Gloria Vaghi,2,3 Gabriele Sebastianelli,4 Francesco Casillo,4 Antonio Russo,5 Marcello Silvestro,5 Francesca Pistoia,1 Giorgio Dalla Volta,6 Matteo Cortinovis,6 Alberto Chiarugi,7 Danilo Antonio Montisano,8 Licia Grazzi,8 Maria Pia Prudenzano,9 Sabina Cevoli,10 Edoardo Mampreso,11 Gianluca Avino,12 Marina Romozzi,13 Mariarosaria Valente,14 Carla Fasano,15 Stefania Battistini,16 Antonio Granato,17 Elisa Maria Piella,18 Innocenzo Rainero,18 Federico De Santis,1 Simona Sacco,1 Maria Albanese,19 Michele Trimboli,20 Alberto Doretti,21 Cristina Tassorelli,2,3 Luigi Francesco Iannone,22 Roberto De Icco2,3 on Behalf of the Italian Headache Registry (RICe) Study Group | 1Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila; 2Department of Brain and Behavioral Sciences, University of Pavia; 3Headache Science and Neurorehabilitation Unit, IRCCS Mondino Foundation, Pavia; 4Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino, Latina; 5Headache Centre, Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, Naples; 6Headache Center of Clinical Neurology of Istituto Clinico ‘Città Di Brescia’, Brescia; 7Department of Health Sciences, University of Florence; 8Neuroalgology Unit and Headache Center, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan; 9Headache Center, Department of Basic Medical Sciences, Neurosciences and Sense Organs, University of Bari; 10IRCCS Istituto Di Scienze Neurologiche Di Bologna, Programma Cefalee E Algie Facciali, Bologna; 11Headache Centre, Neurology - Euganea, Health Unit, Padua; 12Neurology Unit, Ospedale Santo Stefano, USL Toscana Centro, Prato; 13Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Università Cattolica Del Sacro Cuore, Rome; 14Clinical Neurology, Azienda Sanitaria Universitaria Friuli Centrale, Presidio Ospedaliero Santa Maria Della Misericordia, Udine; 15Headache and Facial Pain Center Neurology, AOU Careggi, Florence; 16Department of Medical, Surgical and Neurological Sciences, University of Siena; 17Headache Centre, Clinical Unit of Neurology, School of Neurology, Department of Medicine, Surgery and Health Sciences, University Hospital and Health Services of Trieste, ASUGI, University of Trieste; 18Department of Neurosciences ‘Rita Levi Montalcini’, University of Turin; 19Department of Systems Medicine, University of Rome Tor Vergata, Rome; 20University Magna Graecia, Catanzaro; 21Department of Neuroscience - Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Milan; 22University of Modena and Reggio Emilia, Modena, Italy”. 2025. Confinia Cephalalgica 35 (S1). https://doi.org/10.4081/cc.2025.15850.