Pregnancy outcomes of women with multiple sclerosis treated with ocrelizumab in Canada: A descriptive analysis of real-world data.

OBJECTIVES: To report and describe the real-world use of ocrelizumab in women with multiple sclerosis (MS) in Canada before and/or during pregnancy as well as their fetal outcomes. METHODS: We identified retrospective and prospective Canadian pregnancy exposure cases from the Roche Global Safety Database from November 5, 2008 until March 31, 2021, and linked these cases to information within the Canadian Roche Patient Support Program (COMPASS). The analysis only included spontaneous reports or those from a non-interventional program. Details of the pregnancy exposures, fetal outcomes, as well as relevant patient characteristics, were collected. RESULTS: A total of 107 cases of maternal exposures were retrieved, with 104 (97.2%) being prescribed ocrelizumab for relapsing-remitting MS (RRMS) and 105 (98.1%) being reported from the COMPASS program. Of these cases, 85 (79.4%) were prospective and 22 (20.6%) retrospective. Cases were pooled (n = 65), and unknown/lost to follow-up outcomes and ongoing pregnancies were excluded. All cases reporting an outcome were analyzed, including 47 (72.3%) live births (44.7% full term, 8.5% preterm, 46.8% unknown gestational age), 13 (20.0%) spontaneous abortions, 2 (3.1%) therapeutic abortions/elective terminations, and 3 (4.6%) ectopic pregnancies. One major congenital anomaly of the limb (polydactyly) was reported; however, multiple confounders were likely contributors. Of the total maternal exposures (n = 107), 50 cases (46.6%) were not exposed to ocrelizumab in utero, with 32 of these (64.0%) receiving their last ocrelizumab infusion >3 but ≤6 months prior to conception, 17 (34.0%) receiving it >6 months prior to conception and 1 case receiving it at an unknown time point not in utero. Among the 37 (34.6%) maternal exposure cases exposed in utero, 22 (59.5%) received their last ocrelizumab infusion ≤3 months prior to conception. CONCLUSION: The data presented, although not without limitations, continues to suggest no increased risk of congenital anomalies and are consistent with ocrelizumab global pregnancy safety data and epidemiological rates.

VIGABATRIN TOXICITY IN INFANCY IS ASSOCIATED WITH RETINAL DEFECT IN ADOLESCENCE: A Prospective Observational Study.

PURPOSE: The purpose was to determine whether vigabatrin (VGB) (Sabril)-attributed retinal toxicity defined by electroretinogram in early childhood is associated with visual system defect in adolescents after discontinuation of VGB. METHODS: This prospective cross-sectional study included 24 children previously treated with VGB and monitored in early childhood by electroretinogram for VGB-attributed retinal defects. Ten had been diagnosed with VGB-attributed retinal defect (Group I) and 14 had no VGB-attributed retinal defect (Group II). Outcome measures were extent of monocular visual fields using Goldmann kinetic perimetry and RNFL thickness at the optic nerve head, using optical coherence tomography. RESULTS: Of those able to complete testing (6 eyes Group I and 16 eyes Group II), Goldmann results revealed results of visual field loss in Group I and not in Group II. The optical coherence tomography results demonstrated attenuation of the RNFL in all 6 eyes of Group I participants and in only 1 eye of 10 Group II participants. Optical coherence tomography data were nonoverlapping between Group 1 and Group II eyes. CONCLUSION: The VGB-attributed retinal toxicity identified by means of electroretinogram in infancy was associated with visual field loss and RNFL attenuation of the retinal nerve when tested in adolescence.