Hip involvement/TJR assoc’d w/ MEFV+ vs HLA-B27+ in FMF/SpA pts vs SpA. FMF/SpA: more severe disease, worse outcomes, & destructive hip involvement vs SpA, particularly in pts with MEFV variants & M694V homozygosity. Abs 1108 #ACR21 #RheumNow @RheumNow https://t.co/hlnN26AYgE https://t.co/1jHeVxKs7O