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Long-term safety profile of mitoxantrone in a French cohort of 802 multiple sclerosis patients: A 5-year prospective study

Abstract : Background: From 2001, a French multicentre study was conducted prospectively in a large cohort of MS patients and annually updated up to at least 5 years after initiation of MITOX therapy. Objective: To determine long-term safety profile of mitoxantrone (MITOX) in multiple sclerosis (MS).Methods: Eight hundred and two patients from 12 MS centres (308 relapsing-remitting, 352 secondary progressive and 142 primary progressive) received MITOX monthly for 6 months (87%) or every 3 months (13%). Patients underwent clinical and haematologic evaluations before every MITOX infusion and every 6-12 months up to 5 years after MITOX start. Echocardiograms were performed at the start and end of MITOX and up to 5 years after.Results: The cohort was followed for 5354 patient-years (mean). One out of 802 patients (0.1%) presented with acute congestive heart failure and 39 out of 794 patients (4.9%) presented with asymptomatic left ventricular ejection fraction reduction under 50% (persistent in 11 patients (28%), transient in 27 patients (69%), on the last scan at year 5 in 1 patient). Two cases of therapy-related leukaemia (0.25%) were detected 20 months after MITOX start (one death and one with 8 years confirmed remission). Of the 317 women treated before the age of 45, 17.3% developed a persistent age-dependant amenorrhea. Conclusion: This large cohort with at least 5 years of follow-up provided good insights into the long-term safety profile of MITOX in MS.
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https://hal.ehesp.fr/hal-02437110
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Submitted on : Monday, January 13, 2020 - 3:26:20 PM
Last modification on : Thursday, April 30, 2020 - 7:57:08 PM

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E. Le Page, Emmanuelle Leray, Gilles Edan. Long-term safety profile of mitoxantrone in a French cohort of 802 multiple sclerosis patients: A 5-year prospective study. Multiple Sclerosis Journal, SAGE Publications, 2011, 17 (7), pp.867-875. ⟨10.1177/1352458511398371⟩. ⟨hal-02437110⟩

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