Mitigating the Risk of Tofacitinib-induced Adverse Events in the Elderly Population with Ulcerative Colitis

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BACKGROUND AND AIMS: Older patients with ulcerative colitis treated with tofacitinib are at risk for major cardiovascular events, thromboembolism, herpes zoster, and malignancies and, accordingly, its use is limited by the regulatory authorities. The aim of the present study was to evaluate the occurrence of adverse events and potential preventive measures. METHODS: We retrospectively evaluated patients treated with tofacitinib, divided into two groups according to comorbidities and age. Patient- and disease-related variables were recorded [primary non-response, loss of response, and persistence], together with deviations from the recommended induction regimen, ie, dose reduction, and concomitant treatments with anti-thrombotic therapy. RESULTS: The age-adjusted Charlson comorbidity index of Group 1 [n = 30] was ≥2 and that of Group 2 [n = 37] was ≤ 1. No differences were observed for primary or secondary treatment failures. Both groups achieved comparable steroid-free remission rates at 12 months [53% and 46%, respectively]. Herpes zoster occurred in two patients per group, and no more cases occurred after strict recombinant zoster vaccination. No major cardiovascular event or thromboembolism was registered. Half of patients in Group 1 were treated with a reduced induction dose of 5 mg twice daily and 47% were on concomitant anti-thrombotic therapy. Malignancies were registered in two patients from Group 1 and one patient from Group 2. CONCLUSIONS: Modulation of induction dose and anti-thrombotic therapy may have contributed to prevent cardiological events and thromboembolism. The introduction of zoster vaccine virtually eliminated zoster risk after the first cases. Potential malignancies deserve a careful work-up of older patients before treatment start.

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