Myocilin gene implicated in primary congenital glaucoma.

Abstract:

:Primary congenital glaucoma (PCG) has been associated with CYP1B1 gene (2p21), with a predominantly autosomal recessive mode of inheritance. Our earlier studies attributed CYP1B1 mutations to only 40% of Indian PCG cases. In this study, we included 72 such PCG cases where CYP1B1 mutations were detected in only 12 patients in heterozygous condition, implying involvement of other gene(s). On screening these patients for mutations in myocilin (MYOC), another glaucoma-associated gene, using denaturing high-performance liquid chromatography followed by sequencing, we identified a patient who was double heterozygous at CYP1B1 (c.1103G>A; Arg368His) and MYOC (c.144G>T; Gln48His) loci, suggesting a digenic mode of inheritance of PCG. In addition, we identified the same MYOC mutation, implicated for primary open angle glaucoma, in three additional PCG patients who did not harbor any mutation in CYP1B1. These observations suggest a possible role of MYOC in PCG, which might be mediated via digenic interaction with CYP1B1 and/or an yet unidentified locus associated with the disease.

journal_name

Clin Genet

journal_title

Clinical genetics

authors

Kaur K,Reddy AB,Mukhopadhyay A,Mandal AK,Hasnain SE,Ray K,Thomas R,Balasubramanian D,Chakrabarti S

doi

10.1111/j.1399-0004.2005.00411.x

subject

Has Abstract

pub_date

2005-04-01 00:00:00

pages

335-40

issue

4

eissn

0009-9163

issn

1399-0004

pii

CGE411

journal_volume

67

pub_type

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