Format

Send to:

Choose Destination
See comment in PubMed Commons below
Mol Vis. 2007 Jun 27;13:1005-9.

Novel mutations in the FOXC1 gene in Japanese patients with Axenfeld-Rieger syndrome.

Author information

  • 1Department of Ophthalmology and Visual Sciences, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan. fusen@oph.med.tohoku.ac.jp

Abstract

PURPOSE:

Mutations in the forkhead transcription factor (FOXC1) gene have been shown to cause juvenile glaucoma associated with a variety of anterior-segment anomalies. The purpose of this study was to determine the ocular and genetic characteristics of two Japanese families with Axenfeld-Rieger syndrome (ARS).

METHODS:

Genomic DNA was extracted from the leukocytes of six members of two families with ARS. The DNA from one exon of the FOXC1 gene were amplified by polymerase chain reaction (PCR) and directly sequenced. The patients received standard systemic and ophthalmological examinations.

RESULTS:

Sequence analysis of the FOXC1 gene revealed a novel Ala85Pro missense mutation in Helix1 in family 1 and a deletion of 17 nucleotides (437-453) in Wing1 and Beta2 within the forkhead domain of the FOXC1 gene in family 2. This deletion predicted a loss of the forkhead domain by a premature termination of translation. These mutations segregated with the ARS phenotype in an autosomal dominant pattern. The affected individuals in family 1 had posterior embryotoxon, iris hypoplasia, corectopia with early-onset severe glaucoma, atrial septal defect, aortic stenosis, and pulmonary stenosis. The affected members in family 2 had posterior embryotoxon and iris hypoplasia with early-onset glaucoma, and systemically they had hearing loss, hypertelorism, and telecanthus.

CONCLUSIONS:

A novel mutation in Helix1 and a novel deletion in Wing1 and Beta2 of the forkhead domain of the FOXC1 gene have been identified in two families with ARS. FOXC1 mutations cause a variety of developmental abnormalities in the anterior segment of the eye, and they also induce an elevation in intraocular pressures and early-onset glaucoma.

PMID:
17653043
[PubMed - indexed for MEDLINE]
PMCID:
PMC2776537
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Molecular Vision Icon for PubMed Central
    Loading ...
    Write to the Help Desk