There was no difference in herpes zoster reactivation between the two exposure groups (weighted IRs of 11.1 and 11.7 per 1,000 person-years for GLP-1-RA and DPP-4i initiators, respectively; HR 0.96 [0.65–1.43]; RD -0.6 [-1.5 to 0.3]). The gene discussed is GLP1R; the disease is rheumatoid arthritis.