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Guttmacher syndrome

ORPHA2957
Synonym(s) Preaxial deficiency-postaxial polydactyly-hypospadias syndrome
Prevalence <1 / 1 000 000
Inheritance Autosomal dominant
Age of onset Infancy
Neonatal
ICD-10
  • Q87.2
OMIM
UMLS
  • C1867801
MeSH
  • C538278
MedDRA -

Summary

Disease definition

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.

Epidemiology

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

Clinical description

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.

Etiology

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.

Genetic counseling

The condition is inherited in an autosomal dominant manner.

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