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Long-term follow-up (up to 11 years) of an Italian pediatric MS cohort treated with Natalizumab: a multicenter, observational study

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Abstract

Background

Natalizumab (NAT) has a strong impact on disease activity of aggressive pediatric multiple sclerosis (MS), with no difference in safety profile compared to adult MS. However, available data are limited by short follow-up.

Our aim was to report long-term follow-up data (up to 11 years) of a large Italian pediatric MS cohort treated with NAT.

Materials and methods

We retrospectively collected data of pediatric MS patients treated with NAT included in a previous study and prospectively followed in Italian MS centers. We compared disease activity pre, during, and post-NAT and we performed survival analyses of time to evidence of disease activity (EDA) during NAT, time to reach EDA post-NAT, and time to NAT discontinuation.

Results

Ninety-two patients were included from 19 MS centers in Italy. At NAT initiation, cohort’s characteristics were as follows: 55 females; 14.7 ± 2.4 (mean ± SD) years of age; 34 naïve to disease modifying therapies; 1-year pre-NAT annualized relapse rate (ARR): 2.2 ± 1.2; EDSS (median [IQR]): 2.5 [2.0–3.0]; gadolinium-enhancing lesions: 2 [1–5]; 41 JCV positives. During NAT treatment (61.9 ± 35.2 mean infusions), ARR lowered to 0.08 ± 0.23 (p < 0.001), EDSS score to 1.5 [1.0–2.5] at last infusion (p < 0.001), and 51% patients had EDA (21% after 6 months of rebaseline). No serious adverse events were reported. Forty-nine patients discontinued NAT, mainly due to PML concern; the majority (29/49) had disease reactivation in the subsequent 12 months, of which three with a clinical rebound.

Conclusion

NAT treatment maintains its high efficacy for a long time in pediatric MS patients, with no new safety issues.

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MS Study Group of the Italian Neurological Society: Maria Trojano (Bari), Diego Centonze (Pozzilli), Ruggero Capra (Montichiari), Marco Capobianco (Orbassano), Alice Laroni (Genova), Antonio Uccelli (Genova), Antonio Gallo (Napoli), Francesco Patti (Catania), Maura Chiara Danni (Ancona), Claudio Gasperini (Roma), Gabriella Coniglio (Matera)

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Correspondence to Damiano Baroncini.

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Authors

Damiano Baroncini received travel grants for participation at national/international congresses and compensations for consulting/speaking/scientific publications activities from Sanofi Genzyme, Teva, Merck, Biogen, Roche, Almirall, and Novartis.

Angelo Ghezzi received honoraria for speaking from Almirall, Biogen Idec, Merck Serono, Novartis, Genzyme and Sanofi-Aventis and for consultancy from Merck Serono, Biogen Idec, Teva, F Hoffmann-La Roche and Novartis.

Clara Guaschino has served on scientific advisory boards and received support for travel and congress attendance from Biogen, Novartis, Almirall, Sanofi-Genzyme, Merck-Serono.

Lucia Moiola has received honoraria for speaking and for partecipating to advisory board from: Biogen-Idec; Merck; Sanofi-Genzyme; Novartis; Celgene; Roche.

Massimo Filippi is Editor-in-Chief of the Journal of Neurology and Associate Editor of Human Brain Mapping, Neurological Sciences, and Radiology; received compensation for consulting services and/or speaking activities from Almiral, Alexion, Bayer, Biogen, Celgene, Eli Lilly, Genzyme, MerckSerono, Novartis, Roche, Sanofi, Takeda, and Teva Pharmaceutical Industries; and receives research support from Biogen Idec, Merck-Serono, Novartis, Roche, Teva Pharmaceutical Industries, Italian Ministry of Health, Fondazione Italiana Sclerosi Multipla, and ARiSLA (Fondazione Italiana di Ricerca per la SLA).

Antonio Ianniello reports no disclosures.

Carlo Pozzilli received consulting and lecture fees from Sanofi-Aventis, Biogen Idec, Bayer Schering, Merck Serono, and Novartis. He also received research funding from Novartis, Sanofi-Aventis, Merck Serono, and Bayer Schering.

Roberta Lanzillo has received honoraria from Merck, Novartis, Roche, Sanofi-Genzyme and Teva.

Vincenzo Brescia-Morra has received research grants from the Italian MS Society and Roche and honoraria from Bayer, Biogen, Merck, Mylan, Novartis, Roche, Sanofi-Genzyme and Teva.

Monica Margonireports grants and personal fees from Sanofi Genzyme, Merck Serono, Novartis and Almirall. She was awarded a MAGNIMS-ECTRIMS fellowship in 2020.

Paolo Gallo has been a consultant and member of Advisory Board for Biogen Italy, Sanofi-Genzyme, Merck-Serono, Almirall, Roche, Bristol-Meyer-Squibb and Novartis-Farma; has received funding for travel and speaker honoraria from Merck-Serono, Biogen Italy, Sanof-Genzyme, Novartis-Pharma, Roche, Almirall; has received research support from Biogen Italy, Merk-Serono, Sanofi Genzyme, Roche, Novartis.

Graziella Callari reports no disclosures.

Luigi Grimaldi has received travel funding and/or speaker honoraria from Biogen, Merck Serono, Novartis, Sanofi, and Teva and research support from Biogen and Merck Serono.

Giacomo Lus received personal compensation for speaking or consultancy from Biogen, Teva, Genzyme, Merck, Novartis, Almirall, Merz, and Ipsen.

Massimiliano Calabrese received speaker honoraria and consulting fees from Biogen, Bristol Myers Squibb, Celgene, Genzyme, Merck Serono, Novartis, and Roche and received research support from the Progressive MS Alliance and the Italian Minister of Health.

Marta Simone reports no disclosures.

Marfia Girolama Alessandra is an Advisory Board member of Biogen Idec,Genzyme, Merck-Serono, Novartis, Teva and received honoraria forspeaking or consultation fees from Almirall, Bayer Schering, BiogenIdec, Merck Serono, Novartis, Sanofi-Genzyme, Roche, Mylan, Teva. Sheis the principal investigator in clinical trials for Biogen Idec,Merck Serono, Novartis, Roche, Sanofi-Genzyme, Teva.

Sarah Rasia reports no disclosures

Daniela Cargnelutti reports no disclosures.

Giancarlo Comi reports personal fees from Novartis, Teva Pharmaceutical Industries Ltd, Teva Italia Srl, Sanofi Genzyme, Genzyme Corporation, Genzyme Europe, Merck KGgA, Merck Serono SpA, Celgene Group, Biogen Idec, Biogen Italia Srl, F. Hoffman-La Roche, Roche SpA, Almirall SpA, Forward Pharma, Medday, Excemed.

Mauro Zaffaroni has received honoraria for consulting or lecturing and travel grants from: Alexion, Almirall, Biogen, Celgene, Janssen-Cilag, Merck, Novartis, Sanofi-Genzyme.

Collaborators

Maria Trojano has served on scientific Advisory boards for Biogen, Novartis, Roche, Merck , BMS and Genzyme; has received speaker honoraria from Biogen, Roche, Sanofi, Merck, Genzyme and Novartis; and has received research grants for her Institution from Biogen, Merck, Novartis and Roche.

Diego Centonze is an advisory board member for Almirall, Bayer, Biogen, GW Pharmaceuticals, Merck, Novartis, Roche, Sanofi, and Teva, and received honoraria for speaking or consultation fees from Almirall, Bayer, Biogen, GW Pharmaceuticals, Novartis, Roche, Sanofi, and Teva. He is also the principal investigator in clinical trials for Bayer, Biogen, Merck, Mitsubishi, Novartis, Roche, Sanofi, and Teva. His preclinical and clinical research was supported by grants from Bayer, Biogen, Celgene (BMS), Merck, Novartis, Roche, Sanofi, and Teva.

Ruggero Capra reports lecture fees and/or travel grants from Novartis, Biogen, Roche, Celgene and Merck.

Marco Capobianco received personal fees for advisory board and/or sponsored meeting from Biogen, Merck, Roche, Novartis, Celgene-Bristol, Janssen, Beck Dickinson, Alexion. He also received research grant from FISM, Roche, Novartis.

Alice Laroni received grants or contracts from Italian Ministry of University, Ministry of Health; received consulting fees from Merck, Biogen, Roche, Novartis, Bristol-Myers Squibb Pharma EEIG; received honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events from Mercks, Biogen, Roche, Novartis, Bristol-Myers Squibb Pharma EEIG.

Antonio Uccelli received grants (to his Institution) from FISM, Biogen, Roche, Alexion, Merck Serono; participated on a Data Safety Monitoring Board or Advisory Board (to his Institution) for BD, Biogen, Iqvia, Sanofi, Roche, Alexion, Bristol Myers Squibb.

Antonio Gallo received personal compensation for speaking and consultancy from Biogen, Bristol Myers Squibb, Merck-Serono, Mylan, Novartis, Roche, Sanofi-Genzyme, and Teva.

Francesco Patti received personal compensation for serving on advisory board or speaking ad ECM events by Alexion, Almirall, Bayer, Biogen, Bristol Meyers&Squibb, Janssen, Merck, Novartis, Roche, Sanofi. He also received research grants by Almirall, Biogen, Merck, and Roche, FISM, MIUR and Reload Onlus Association.

Maura Chiara Danni reports no disclosures.

Claudio Gasperini has received compensation for consulting from Bayer HealthCare and Biogen and as a speaker for lectures from Biogen, Bayer HealthCare, Genzyme, Merck Serono, Novartis and Teva.

Gabriella Coniglio reports no disclosures.

Ethical approval

This study received approval from the ethical committee of the coordinating center (Multiple Sclerosis Center, Gallarate Hospital, ASST Valle Olona).

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Baroncini, D., Ghezzi, A., Guaschino, C. et al. Long-term follow-up (up to 11 years) of an Italian pediatric MS cohort treated with Natalizumab: a multicenter, observational study. Neurol Sci 43, 6415–6423 (2022). https://doi.org/10.1007/s10072-022-06211-8

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