FCRL3 and endometriosis: Endometriosis-related infertility has been reported to co-occur with autoimmune diseases,33 while FCRL3 genetic polymorphisms discourage regular expression of FCRL3 in B cells, Treg cells, macrophages, etc., during the autoimmune process, indicating that FCRL3 genetic polymorphism might be associated with the presence of endometriosis-related infertility.