Family with sequence similarity 209 member A (FAM209A)

Family with sequence similarity 209 member A (FAM209A) is a small transmembrane protein primarily expressed in the testis, predicted to be involved in the biogenesis of the sperm acrosome and required for male fertility. The gene appears to be evolutionarily conserved among mammals and shows high testis specificity. Functional studies in mice indicate that loss of Fam209 leads to abnormalities in acrosome formation and male infertility, while humans have two paralogs, FAM209A and FAM209B, likely due to a gene duplication event, both highly expressed in testis. FAM209 is associated with the inner nuclear membrane during spermatogenesis, with no evidence of direct clinical significance or drug interaction documented to date. Key points: - FAM209A is not currently considered a therapeutic target (such as a receptor, enzyme, or transporter) and has no established role in drug interactions or mechanisms of drug action. - It is best characterized as a testis-specific, sperm function-related protein critical for male fertility via its role in acrosome development. - Aliases include "C20orf106" and "Protein FAM209A." - Associated with male infertility, especially globozoospermia, a rare disorder of sperm morphology. - No specific safety concerns or proven biomarker usage in clinical practice are reported for this gene.

Other names

C20orf106Protein FAM209AdJ1153D9.3