Primary congenital glaucoma due to paternal uniparental isodisomy of chromosome 2 and CYP1B1 deletion.

Abstract:

BACKGROUND:CYP1B1 variants and deletions are the most common cause of primary congenital glaucoma (PCG). METHODS:We investigated an individual with PCG from the Australian and New Zealand Registry of Advanced Glaucoma. We performed sequencing of the CYP1B1 gene, followed by Multiplex Ligation-dependent Probe Amplification and SNP array. RESULTS:We identified a homozygous deletion of the CYP1B1 gene by Multiplex Ligation-dependent Probe Amplification and confirmed that the father was heterozygous for a CYP1B1 deletion but the mother had normal gene copy number. SNP array identified paternal uniparental isodisomy of the entire chromosome 2. CONCLUSIONS:This study is the first report of a homozygous CYP1B1 whole gene deletion due to paternal uniparental isodisomy of chromosome 2 as a cause of PCG. These results illustrate the importance of genetic testing in providing appropriate genetic counseling regarding the risks of recurrence.

journal_name

Mol Genet Genomic Med

authors

Souzeau E,Dubowsky A,Ruddle JB,Craig JE

doi

10.1002/mgg3.774

subject

Has Abstract

pub_date

2019-08-01 00:00:00

pages

e774

issue

8

issn

2324-9269

journal_volume

7

pub_type

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