Preaxial deficiency, postaxial polydactyly and hypospadias

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.

Guttmacher syndrome is an extremely rare syndrome characterized by hypoplastic thumbs and halluces, 5th finger clinobrachydactyly, postaxial polydactyly of the hands, short or uniphalangeal 2nd toes with absent nails and hypospadias.

It has been described in a father and his son and daughter.

The affected patients have normal mental development. Except for postaxial polydactyly of the hands and uniphalangeal 2nd toes with absent nails, features are in common with hand-foot-genital syndrome (HFGS, see this term) caused by mutations in the HOXA13 gene.

In all three affected individuals with Guttmacher syndrome, two different sequence alterations were identified in HOXA13 gene: a de novo missense mutation and a deletion in the promoter region of the gene, inherited from an unaffected parent, which may contribute to the phenotype in the affected individuals.

The condition is inherited in an autosomal dominant manner.

Visit the Orphanet disease page for more resources.

Last updated: 1/1/2011

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These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.