Myocilin mutations in black South Africans with primary open-angle glaucoma
Author Information
Author(s): Whigham Benjamin T., Williams Susan E.I., Liu Yutao, Rautenbach Robyn M., Carmichael Trevor R., Wheeler Joshua, Ziskind Ari, Qin Xuejun, Schmidt Silke, Ramsay Michele, Hauser Michael A., Allingham R. Rand
Primary Institution: Duke University Medical Center
Hypothesis
This study examines the role of MYOC mutations in a black South African population with primary open-angle glaucoma (POAG).
Conclusion
A small minority of black South Africans with POAG carry MYOC mutations, with the Gly374Val mutation potentially being a novel glaucoma-causing mutation.
Supporting Evidence
- Probable glaucoma-causing mutations were observed in 4.4% of POAG cases.
- A previously reported mutation, Tyr453MetfsX11, was found in three cases and one control.
- The novel Gly374Val mutation was observed only in cases and not in controls.
- 14 silent variants were identified, none of which were previously reported as glaucoma-causing.
Takeaway
The study found that only a few black South Africans with glaucoma have specific gene mutations, which could help in understanding and treating the disease better.
Methodology
The study involved recruiting unrelated black South African subjects with POAG and unaffected controls, performing eye examinations, and sequencing the MYOC gene.
Potential Biases
Potential bias due to the low diagnosis rate of POAG among black South Africans, which may affect family history reporting.
Limitations
The study may not represent all black South Africans due to the low rate of diagnosis of POAG in this population.
Participant Demographics
113 POAG cases and 131 controls, mean age of POAG cases was 59.6 years and controls was 70.5 years, self-identified as black South Africans.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Want to read the original?
Access the complete publication on the publisher's website