Overlap between RA and SLE: is the famous rhupus more frequent than it seems? In the Boston OM1 SLE Registry w/ 44,186 SLE: 4.7% also reported as having RA. This is higher than the usual reported prevalence. #ACR21 #Abst0354 @RheumNow https://t.co/FYfvSdCkkF https://t.co/ISuae2hCI3