Angiotensin II receptor blockers and gastrointestinal adverse events of resembling sprue-like enteropathy: a systematic review.
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
olmesartan | increase | gastrointestinal symptoms resembling sprue-like enteropathy | - | - | associated with | #1 |
ARBs | increase | enteropathy | - | - | may be a class effect for | #2 |
ARBs | increase | onset of symptoms | cases | 2 weeks to 13 years | periods between initiation and onset of symptoms ranged from | #3 |
ARBs | increase | villous atrophy | cases | 201 cases (92.2%) | were reported in | #4 |
ARBs | increase | intraepithelial lymphocytosis | cases | 131 cases (60.1%) | were reported in | #5 |
HLA testing | increase | HLA-DQ2 or HLA-DQ8 haplotypes | patients | 105 (71.4%) | had | #6 |
Celiac-associated antibodies testing | increase | negative results | patients | 167 (98.8%) | showed | #7 |
Gluten exclusion from the diet | no change | symptoms of enteropathy | patients | 127 (97.7%) of 130 patients | failed to relieve | #8 |
discontinuation of ARB | decrease | complete remission of symptoms | patients | 233 (97.4%) of the 239 patients | resulted in | #9 |
restarting olmesartan | increase | symptoms | cases | 7 cases (2.8%) | reported recurrence of | #10 |
BACKGROUND: Olmesartan, an angiotensin II receptor blocker (ARB), is associated with gastrointestinal symptoms resembling sprue-like enteropathy. Some have proposed that enteropathy may be a class effect rather than olmesartan-specific. We performed a systematic review to identify literature of sprue-like enteropathy for all ARBs. METHODS: Case reports, case series and comparative studies of ARBs were searched on PubMed and Embase databases through 21 November 2018 and then assessed. RESULTS: A total of 82 case reports and case series as well as 5 comparative studies, including 248 cases, were selected and analysed. The ARBs listed in the case reports were olmesartan (233 users; 94.0%), telmisartan (5 users; 2.0%), irbesartan (4 users; 1.6%), valsartan (3 users; 1.2%), losartan (2 users; 0.8%) and eprosartan (1 user; 0.4%). The periods between ARB initiation and onset of symptoms ranged from 2 weeks to 13 years. Histologic results were reported in 218 cases, in which 201 cases (92.2%) were villous atrophy and 131 cases (60.1%) were intraepithelial lymphocytosis. Human leucocyte antigen (HLA) testing was performed in 147 patients, among whom 105 (71.4%) had HLA-DQ2 or HLA-DQ8 haplotypes. Celiac-associated antibodies were tested in 169 patients, among whom 167 (98.8%) showed negative results. Gluten exclusion from the diet failed to relieve symptoms of enteropathy in 127 (97.7%) of 130 patients with information. Complete remission of symptoms after discontinuation of ARB was reported in 233 (97.4%) of the 239 patients with information. Seven cases (2.8%) reported recurrence of symptoms after restarting olmesartan; rechallenge was not reported for the non-olmesartan ARBs. The retrospective studies conducted worldwide had inconsistent study designs (e.g. differences in periods of study and case definition) and findings. CONCLUSIONS: Although enteropathy is rare, clinicians should remain vigilant of this potential adverse event even years after medication initiation.