Variants in HCCS and Their Impact on Ocular Features
Author Information
Author(s): Reis Linda M., Basel Donald, Bitoun Pierre, Walton David S., Glaser Tom, Semina Elena V.
Primary Institution: Medical College of Wisconsin
Hypothesis
The study investigates the relationship between intragenic and genomic variants in HCCS and the phenotypic variability in microphthalmia with linear skin defects (MLS).
Conclusion
The findings support the inclusion of HCCS in testing for individuals with isolated ocular anomalies and highlight its association with various ocular defects.
Supporting Evidence
- Three novel intragenic variants and two genomic deletions of HCCS were found in individuals with primarily ocular features of MLS.
- Corneal opacity was the most penetrant feature observed in 100% of the affected individuals.
- X-inactivation was highly skewed in affected individuals with all three intragenic variants.
Takeaway
This study looks at how changes in a specific gene can cause eye problems in some people, showing that even small changes can lead to big differences in how the eyes develop.
Methodology
Exome sequencing was used to identify variants affecting HCCS in individuals with ocular features of MLS.
Potential Biases
There may be a risk of bias due to the selective nature of the study population, which primarily included individuals with significant ocular features.
Limitations
The study's findings may be influenced by ascertainment bias, as individuals with more severe features are more likely to be tested.
Participant Demographics
The study included 10 individuals from 8 families, primarily affected females with varying degrees of ocular anomalies.
Digital Object Identifier (DOI)
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