Mutation Spectrum of CYP1B1 and MYOC Genes in Korean Patients with Primary Congenital Glaucoma
Author Information
Author(s): Kim Hee-Jung, Suh Wool, Park Sung Chul, Kim Chan Yun, Park Ki Ho, Kook Michael S., Kim Yong Yeon, Kim Chang-Sik, Park Chan Kee, Ki Chang-Seok, Kee Changwon
Primary Institution: Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
Hypothesis
To elucidate the incidence of cytochrome P450 1B1 (CYP1B1) and myocillin (MYOC) mutations in Korean patients with primary congenital glaucoma (PCG).
Conclusion
CYP1B1 mutations are major causes of PCG in Korea, but about 70% of patients do not have mutations in either CYP1B1 or MYOC, indicating significant genetic diversity.
Supporting Evidence
- 22 out of 85 patients had CYP1B1 mutations.
- The most frequent mutation was a frameshift mutation in CYP1B1.
- Two novel mutations were identified in the MYOC gene.
Takeaway
This study looked at 85 Korean kids with a type of glaucoma and found that a quarter of them had a specific gene mutation, but many didn't have any known mutations.
Methodology
Genomic DNA was collected from peripheral blood of 85 unrelated Korean patients diagnosed with PCG and screened for mutations in the CYP1B1 and MYOC genes using bi-directional sequencing.
Limitations
The study only screened the coding regions of CYP1B1 and MYOC, potentially missing mutations in non-coding regions or other related genes.
Participant Demographics
The study included 85 unrelated Korean patients, with one familial case and the rest being sporadic.
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