Cases of clozapine-induced gastrointestinal hypomotility in Europe: Outcomes and fatality risk factors based on EudraVigilance data

Tyras, Szymon; Wierzchoń, Katarzyna; Jaroszewska, Aneta

doi:10.1016/j.psychres.2021.113911

Cited by 1 publication

(1 citation statement)

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“…A report using the EudraVigilance database cited 1472 CIGH cases from the study period (2011–2020) with a mortality rate of 10%. 23 Clearly there may be overlap with the data presented here (Table 1) and also with some of the pharmacovigilance reports studied by De Leon et al, 24 which gave a global estimate of CIGH-related mortality data (2842 cases, mortality rate 12%).…”

Section: Discussionmentioning

confidence: 48%

Clozapine-induced gastrointestinal hypomotility: presenting features and outcomes, UK pharmacovigilance reports, 1992–2017

Handley

Every‐Palmer

Ismail³

et al. 2022

Br J Psychiatry

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Background Clozapine-induced gastrointestinal hypomotility (CIGH) affects some 75% of patients treated with clozapine. Aims To document the incidence of potentially harmful CIGH in the UK. Method We studied spontaneous UK pharmacovigilance reports recorded as clozapine-related gastrointestinal adverse drug reactions, 1992–2017. Results There were 527 patients reported with potentially harmful CIGH; 33% (n = 172) died. Deaths averaged 1 per year 1992–1999, 5 per year 2000–2009 and 15 per year 2010–2017. Those who died were older (median 52 years v. 49 years) and had been prescribed clozapine for longer than those who recovered (median 11.3 years v. 4.8 years), but there was no difference in prescribed dose. Within the first 4 years of clozapine treatment, there were 169 reports of CIGH, of which 3% (n = 5) were fatal. At 10–14 years there were 63 reports of CIGH, of which 25% (n = 16) were fatal. Among the deaths, males were younger (median 51, range 22–89 v. median 57, range 24–89 years) with higher clozapine doses (median 450, range 100–900 v. median 300, range 12.5–800 mg/d) than females. In non-fatal CIGH, surgery was the most frequent outcome (n = 92). The procedures included appendectomy, ileostomy, total/partial colectomy, colostomy/stoma and proctosigmoidectomy. Clozapine dosage was reduced in 6 patients, stopped and restarted in 23, ‘continued’ in 6 and discontinued permanently in at least 76 patients. Conclusions The risk of serious morbidity/mortality from CIGH is substantial. The need to actively monitor bowel function and give laxatives to patients treated with clozapine is clear.

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Section: Discussionmentioning

confidence: 48%