GLP1R and hydrops fetalis: GLP-1 receptor agonists reduced HF events by 12% (RR 0.88, 95% CI 0.82-0.95; ARR 0.42%, 95% CI 0.17%-0.62%; NNT 238, 95% CI 161-588), and, in those without baseline HF, by 19% (RR 0.81, 95% CI 0.72-0.90; ARR 0.60%, 95% CI 0.32%-0.89%; NNT 167, 95% CI 113-313).