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Barbanti P, Aurilia C, Egeo G, Proietti S, D'Onofrio F, Torelli P, Aguggia M, Bertuzzo D, Finocchi C, Trimboli M, Cevoli S, Fiorentini G, Orlando B, Zucco M, Di Clemente L, Cetta I, Colombo B, di Poggio MLB, Favoni V, Grazzi L, Salerno A, Carnevale A, Robotti M, Frediani F, Altamura C, Filippi M, Vernieri F, Bonassi S. Ultra- late response (> 24 weeks) to anti-CGRP monoclonal antibodies in migraine: a multicenter, prospective, observational study. J Neurol 2024; 271:2434-2443. [PMID: 38231271 PMCID: PMC11055785 DOI: 10.1007/s00415-023-12103-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/04/2023] [Accepted: 11/06/2023] [Indexed: 01/18/2024]
Abstract
OBJECTIVE Nearly 60% of migraine patients treated with monoclonal antibodies (mAbs) targeting the calcitonin gene-related peptide (CGRP) pathway experience a ≥ 50% reduction in monthly migraine days (MMD) at 12 weeks compared to baseline (responders). However, approximately half of the patients not responding to anti-CGRP mAbs ≤ 12 weeks do respond ≤ 24 weeks (late responders). We assessed frequency and characteristics of patients responding to anti-CGRP mAbs only > 24 weeks (ultra-late responders). METHODS In this multicenter (n = 16), prospective, observational, real-life study, we enrolled all consecutive adults affected by high-frequency episodic migraine (HFEM: ≥ 8 days/month) or chronic migraine (CM), with ≥ 3 prior therapeutic failures, treated with any anti-CGRP mAbs for ≥ 48 weeks. We defined responders patients with a ≥ 50% response rate ≤ 12 weeks, late responders those with a ≥ 50% response rate ≤ 24 weeks, and ultra-late responders those achieving a ≥ 50% response only > 24 weeks. RESULTS A total of 572 migraine patients completed ≥ 48 weeks of anti-CGRP mAbs treatment. Responders accounted for 60.5% (346/572), late responders for 15% (86/572), and ultra-late responders for 15.7% (90/572). Among ultra-late responders, 7.3% (42/572) maintained the ≥ 50% response rate across all subsequent time intervals (weeks 28, 32, 36, 40, 44, and 48) and were considered persistent ultra-late responders, while 8.4% (48/572) missed the ≥ 50% response rate at ≥ 1 subsequent time interval and were classified as fluctuating ultra-late responders. Fifty patients (8.7%) did not respond at any time interval ≤ 48 weeks. Ultra-late responders differed from responders for higher BMI (p = 0.033), longer duration of medication overuse (p < 0.001), lower NRS (p = 0.017) and HIT-6 scores (p = 0.002), higher frequency of dopaminergic symptoms (p = 0.002), less common unilateral pain-either alone (p = 0.010) or in combination with UAS (p = 0.023), allodynia (p = 0.043), or UAS and allodynia (p = 0.012)-a higher number of comorbidities (p = 0.012), psychiatric comorbidities (p = 0.010) and a higher proportion of patients with ≥ 1 comorbidity (p = 0.020). CONCLUSION Two-thirds of patients not responding to anti-CGRP mAbs ≤ 24 weeks do respond later, while non-responders ≤ 48 weeks are quite rare (8.7%). These findings suggest to rethink the duration of migraine prophylaxis and the definition of resistant and refractory migraine, currently based on the response after 2-3 months of treatment.
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Affiliation(s)
- Piero Barbanti
- Headache and Pain Unit, IRCCS San Raffaele Roma, Via Della Pisana 235, 00163, Rome, Italy.
- San Raffaele University, Rome, Italy.
| | - Cinzia Aurilia
- Headache and Pain Unit, IRCCS San Raffaele Roma, Via Della Pisana 235, 00163, Rome, Italy.
| | - Gabriella Egeo
- Headache and Pain Unit, IRCCS San Raffaele Roma, Via Della Pisana 235, 00163, Rome, Italy
| | - Stefania Proietti
- Clinical and Molecular Epidemiology, IRCCS San Raffaele Roma, Rome, Italy
| | - Florindo D'Onofrio
- Headache Center Neurology Unit, San Giuseppe Moscati Hospital, Avellino, Italy
| | - Paola Torelli
- Unit of Neurology, Department of Medicine and Surgery, Headache Center, University of Parma, Parma, Italy
| | | | | | - Cinzia Finocchi
- Divisione di Neurologia, Ospedale San Paolo, ASL 2 Savonese, Savona, Italy
| | | | - Sabina Cevoli
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
| | - Giulia Fiorentini
- Headache and Pain Unit, IRCCS San Raffaele Roma, Via Della Pisana 235, 00163, Rome, Italy
| | - Bianca Orlando
- Headache and Pain Unit, IRCCS San Raffaele Roma, Via Della Pisana 235, 00163, Rome, Italy
| | - Maurizio Zucco
- Headache Center, San Camillo-Forlanini Hospital, Rome, Italy
| | | | - Ilaria Cetta
- Neurology Unit, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy
| | - Bruno Colombo
- Neurology Unit, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy
| | | | - Valentina Favoni
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
| | - Licia Grazzi
- Neuroalgology Unit, Headache Center Fondazione, IRCCS Istituto Neurologico"Carlo Besta", Milan, Italy
| | - Antonio Salerno
- Headache Center San Giovanni Addolorata Hospital, Rome, Italy
| | | | | | | | - Claudia Altamura
- Headache and Neurosonology Unit, Policlinico Universitario Campus Bio-Medico, Rome, Italy
| | - Massimo Filippi
- Neurology Unit, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy
| | - Fabrizio Vernieri
- Headache and Neurosonology Unit, Policlinico Universitario Campus Bio-Medico, Rome, Italy
| | - Stefano Bonassi
- San Raffaele University, Rome, Italy
- Headache Center Neurology Unit, San Giuseppe Moscati Hospital, Avellino, Italy
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