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Abstract #60610 Published in IGR 16-4
CYP1B1 copy number variation is not a major contributor to primary congenital glaucoma
Souzeau E; Hayes M; Ruddle JB; Elder JE; Staffieri SE; Kearns LS; Mackey DA; Zhou T; Ridge B; Burdon KP; Dubowsky A; Craig JEMolecular Vision 2015; 21: 160-164
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.
Department of Ophthalmology, Flinders University, Flinders Medical Centre, Adelaide, Australia.
Classification:
9.1.1 Congenital glaucoma, Buphthalmos (Part of: 9 Clinical forms of glaucomas > 9.1 Developmental glaucomas)
3.4.2 Gene studies (Part of: 3 Laboratory methods > 3.4 Molecular genetics)