FcγRII expression on B cells and monocytes of SCD patients and healthy controls. (A) FcγRIIb/c expression on B cells on cells expressing the FCGR2C.nc-ORF variant (patients, n = 6; healthy donors, n = 6) or FCGR2C-stop variant (patients, n = 4; healthy donors, n = 10). (B) FcγRIIa expression on monocytes expressing the FCGR2C.nc-ORF variant (patients, n = 4; healthy donors, n = 5) or FCGR2C-stop variant (patients, n = 6; healthy donors, n = 12). *P < .05.