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Health Dictionary

Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.

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FAM20A

Introduction

FAM20A is a protein that in humans is encoded by the FAM20A gene.[1]

Function

Function

FAM20A belongs to an evolutionarily conserved family of secreted proteins expressed in many tissues. This locus encodes a protein that is likely secreted and may function in hematopoiesis.[2] A mutation at this locus has been associated with amelogenesis imperfecta and gingival hyperplasia syndrome. Alternatively spliced transcript variants have been identified. [provided by RefSeq, Aug 2011]

Clinical significance

Clinical significance

A mutation in FAM20A was reported to be associated with amelogenesis imperfecta, an inherited enamel defect, and gingival hyperplasia syndrome.[3]

Human mutations in FAM20A were also reported to cause Enamel-Renal Syndrome, an autosomal recessive disorder characterized by severe enamel hypoplasia, failed tooth eruption, intrapulpal calcifications, enlarged gingiva, and nephrocalcinosis.[4]

References

References

  1. ↑ “Entrez Gene: family with sequence similarity 20”.
  2. ↑ Nalbant D, Youn H, Nalbant SI, Sharma S, Cobos E, Beale EG, Du Y, Williams SC (2005). “FAM20: an evolutionarily conserved family of secreted proteins expressed in hematopoietic cells”. BMC Genomics. 6 (1): 11. doi:10.1186/1471-2164-6-11. PMC 548683. PMID 15676076.
  3. ↑ O’Sullivan J, Bitu CC, Daly SB, Urquhart JE, Barron MJ, Bhaskar SS, Martelli-Júnior H, dos Santos Neto PE, Mansilla MA, Murray JC, Coletta RD, Black GC, Dixon MJ (May 2011). “Whole-Exome sequencing identifies FAM20A mutations as a cause of amelogenesis imperfecta and gingival hyperplasia syndrome”. Am. J. Hum. Genet. 88 (5): 616–20. doi:10.1016/j.ajhg.2011.04.005. PMC 3146735. PMID 21549343.
  4. ↑ Wang SK, Aref P, Hu Y, Milkovich RN, Simmer JP, El-Khateeb M, Daggag H, Baqain ZH, Hu JC (Feb 2013). “FAM20A mutations can cause enamel-renal syndrome (ERS)”. PLoS Genet. 9 (2): e1003302. doi:10.1371/journal.pgen.1003302. PMC 3585120. PMID 23468644.