MEPCE and systemic lupus erythematosus: By ELISAs and immunoblots, we detected autoantibodies in the serum of SLE patients recognizing proteins encoded by LARP7, MOV10, ZCCHC3, MEPCE, YARS2, RPL18A, RPL27A, and H2BC17 (p<0.05), but not CORO1B, DDX6, PABPC1, and PABPC4, and were mostly absent or low in healthy controls.