FCRL3 and endometriosis: Furthermore, it was untenable to equate Chinese population with other ethnicities on the association of FCRL3 with endometriosis-related infertility owning to extra possible etiology of endometriosis-related infertility, such as discrepancy in environmental factors, individual genetic, lifestyle, reproductive risk factors, etc.44,45 Therefore, to further substantiate the effect of FCRL3 mutation on susceptibility of endometriosis-related infertility in Asians and other ethnicities, large-scale and in-depth studies are in huge need.