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Updated: Apr 16, 2026

Array Comparative Genomic Hybridization Array CGH for Detection of Genomic Copy Number Variants
Published on: February 21, 2015
CYP1B1 copy number variation is not a major contributor to primary congenital glaucoma
Emmanuelle Souzeau1, Melanie Hayes2, Jonathan B Ruddle3
1Department of Ophthalmology, Flinders University, Flinders Medical Centre, Adelaide, Australia.
Purpose:
To evaluate the prevalence and the diagnostic utility of testing for CYP1B1 copy number variation (CNV) in primary congenital glaucoma (PCG) cases unexplained by CYP1B1 point mutations in The Australian and New Zealand Registry of Advanced Glaucoma.
Methods:
In total, 50 PCG cases either heterozygous for disease-causing variants or with no CYP1B1 sequence variants were included in the study. CYP1B1 CNV was analyzed by Multiplex Ligation-dependent Probe Amplification (MLPA).
Results:
No deletions or duplications were found in any of the cases.
Conclusion:
This is the first study to report on CYP1B1 CNV in PCG cases. Our findings show that this mechanism is not a major contributor to the phenotype and is of limited diagnostic utility.
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