iris colobomata

Biemond Syndrome II

Clinical Characteristics
Ocular Features: 

This disorder may belong to the spectrum of Bardet-Biedl syndromes (209900) but is listed separately because of the prominent association of iris colobomata.  Retinal dystrophy resembling retinitis pigmentosa is also part of this disorder but the rarity of cases precludes a full description of the phenotype.

Systemic Features: 

Underdevelopment of the external genitalia is more prominent in males.  Obesity, hydrocephalus and mental retardation are also features.  Postaxial polydactyly is common.  Renal disease does not seem to be part of this disorder.

Genetics

Little is known about the inheritance or genetic defect responsible.  Colobomas and polydactyly have been found in relatives of patients with Biemond syndrome suggesting that this may be an autosomal dominant disorder with variable penetrance.

Pedigree: 
Autosomal dominant
Treatment
Treatment Options: 

None known.

References
Article Title: 
Subscribe to RSS - iris colobomata