Autosomal dominant iris hypoplasia is caused by a mutation in the Rieger syndrome (RIEG/PITX2) gene.
OBJECTIVE
To determine whether autosomal dominant iris hypoplasia is caused by mutations in the newly described gene for Rieger syndrome (RIEG/PITX2).


METHODS
Mutation screening and sequence analysis was performed in a single family.


RESULTS
A novel mutation in the RIEG/PITX2 gene was found in all affected but no unaffected individuals. This mutation would be expected to result in an arginine to tryptophan amino acid change in the homeodomain of solurshin, the RIEG/ITX2 gene product.


CONCLUSIONS
Autosomal dominant iris hypoplasia is caused by a defect in the same gene that is defective in many cases of Rieger syndrome.
Alward
W L
WL
Department of Ophthalmology, University of Iowa College of Medicine, Iowa City 52242, USA. wallace-alward@uiowa.edu
Semina
E V
EV
Kalenak
J W
JW
Héon
E
E
Sheth
B P
BP
Stone
E M
EM
Murray
J C
JC
D000867:Anterior Chamber / Q000002:abnormalities; D003315:Cornea / Q000002:abnormalities*; D005260:Female; D018398:Homeodomain Proteins / Q000235:genetics*; D006801:Humans; D007498:Iris / Q000002:abnormalities*; D007499:Iris Diseases / Q000235:genetics*; D008297:Male; D009687:Nuclear Proteins; D051761:Paired Box Transcription Factors; D010375:Pedigree; D017354:Point Mutation; D017422:Sequence Analysis, DNA; D013577:Syndrome; D014157:Transcription Factors / Q000235:genetics*; D000097577:Homeobox Protein PITX2
D018398:Homeodomain Proteins; D009687:Nuclear Proteins; D051761:Paired Box Transcription Factors; D014157:Transcription Factors; D000097577:Homeobox Protein PITX2; C101485:homeobox protein PITX1; C433629:homeobox protein PITX3