Gut microbiota of axSpA pts who underwent bDMARD tx for one year more closely resembled controls. Unique enrichment of Collinsella in axSpA patients remained stable across time & tx, suggesting it may be a disease biomarker. Abs 1162 #ACR22 @RheumNow https://t.co/SjwORWp6IU https://t.co/rLlu4jGCfd