RABBIT (German biologics register) study shows overall small increase in malignancy w/ JAKi vs bDMARDs. Risks greatest in those ≥ 60 yrs, w/ Hi Dz activity, on ≥3 prior csDMARDs. 2285 JAKi vs 4259 bDMARDs: 88 vs 135 malignancies CAs (IRs 11.6 vs 8.9; adj HR 1.40). JAKi risk https://t.co/AlK2SWn6UR