Special Issue Reviews–A Peer Reviewed Forum
Polydactyly: How many disorders and how many genes? 2010 update
Version of Record online: 28 MAR 2011
Copyright © 2011 Wiley-Liss, Inc.
Special Issue: Special Issue on Limb Development
Volume 240, Issue 5, pages 931–942, May 2011
How to Cite
Biesecker, L. G. (2011), Polydactyly: How many disorders and how many genes? 2010 update. Dev. Dyn., 240: 931–942. doi: 10.1002/dvdy.22609
- Issue online: 20 APR 2011
- Version of Record online: 28 MAR 2011
- Manuscript Accepted: 7 DEC 2010
- genetic heterogeneity;
- medical diagnosis;
Limb development is clinically and biologically important. Polydactyly is common and caused by aberrant anterior–posterior patterning. Human disorders that include polydactyly are diverse. To facilitate an understanding of the biology of limb development, cataloging the genes that are mutated in patients with polydactyly would be useful. In 2002, I characterized human phenotypes that included polydactyly. Subsequently, many advances have occurred with refinement of clinical entities and identification of numerous genes. Here, I update human polydactyly entities by phenotype and mutated gene. This survey demonstrates phenotypes with overlapping manifestations, genetic heterogeneity, and distinct phenotypes generated from mutations in single genes. Among 310 clinical entities, 80 are associated with mutations in 99 genes. These results show that knowledge of limb patterning genetics is improving rapidly. Soon, we will have a comprehensive toolkit of genes important for limb development, which will lead to regenerative therapies for limb anomalies. Developmental Dynamics 240:931–942, 2011. © 2011 Wiley-Liss, Inc.