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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Ophthalmologic findings in Cornelia de Lange syndrome: a genotype-phenotype correlation study.

OBJECTIVE: To evaluate individuals with Cornelia de Lange syndrome previously screened for mutations in the NIPBL gene for genotype-phenotype correlations with regard to severity of ophthalmologic findings. METHODS: Fifty-four patients with Cornelia de Lange syndrome (26 mutation positive and 28 mutation negative) with varying extent and severity of ophthalmologic findings participated in the study. We conducted a retrospective analysis of ophthalmologic data obtained through survey responses and medical records. The severity of nasolacrimal duct obstruction, myopia, ptosis, and strabismus was classified. The severity of eye findings was compared relative to the presence vs the absence of mutations in the coding region of NIPBL and relative to mutations predicted to result in a truncated protein (nonsense and frameshift mutations) vs missense mutations. Fisher exact test was used to determine the significance of these correlations. RESULTS: A trend toward increased ptosis severity was found among individuals with truncating (nonsense and frameshift) mutations compared with individuals with missense mutations (P = .07). CONCLUSION: NIPBL may be directly involved in ptosis pathogenesis. CLINICAL RELEVANCE: Elucidating the pathogenetic mechanisms of ophthalmologic morbidities in patients with de Lange syndrome may lead to more effective treatment.[1]

References

  1. Ophthalmologic findings in Cornelia de Lange syndrome: a genotype-phenotype correlation study. Nallasamy, S., Kherani, F., Yaeger, D., McCallum, J., Kaur, M., Devoto, M., Jackson, L.G., Krantz, I.D., Young, T.L. Arch. Ophthalmol. (2006) [Pubmed]
 
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