Metanalysis of cancer risk w/ abatacept vs placebo or TNFi in #RA. (18 RCTs, 10 LTE, 15 535 PYs ABA exposure) show no signif increase in malignancy for ABA vs PBO (IRR 0.58) or TNFi (IRR 0.72). Observational data ABA > other b/tsDMARDs (IRR 1.21; 1.15–1.28), but not csDMARDs… https://t.co/2aBfwyKv0e https://t.co/zUmaHZN3mR