Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0086543 (cataract)
 29,165 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Congenital cataracts cause 10-30% of all blindness in children, with one-third of cases estimated to have a genetic cause. Lamellar cataract is the most common type of infantile cataract. We carried out whole-genome linkage analysis of Chinese individuals with lamellar cataract, and found that the disorder is associated with inheritance of a 5.11-cM locus on chromosome 16. This locus coincides with one previously described for Marner cataract. We screened individuals of three Chinese families for mutations in HSF4 (a gene at this locus that encodes heat-shock transcription factor 4) and discovered that in each family, a distinct missense mutation, predicted to affect the DNA-binding domain of the protein, segregates with the disorder. We also discovered an association between a missense mutation and Marner cataract in an extensive Danish family. We suggest that HSF4 is critical to lens development.
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PMID:Mutant DNA-binding domain of HSF4 is associated with autosomal dominant lamellar and Marner cataract. 1208 25

This study was aimed to identify the mutation of the whole coding region of shock transcription factor 4 (HSF4) gene in a Chinese family with autosomal dominant congenital cataract (ADCC). All exons of HSF4 were amplified by PCR. Sequence analysis of PCR products was performed. Restriction fragment length polymorphism (RFLP) analysis was conducted to confirm the pathogenic mutation. The results showed that a C to T substitution occurred at nucleotide 331 in patients of this family, leading to the replacement of the amino acid arginine-111 with cysteine in exon 3. RFLP analysis showed that the amino acid change was co-segregated with all affected individuals. It was concluded that the new mutation of c.331C>T in HSF4 DNA may be responsible for the autosomal dominant congenital cataract in this family.
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PMID:A novel HSF4 mutation in a Chinese family with autosomal dominant congenital cataract. 2587 71

PurposeInherited cataract, opacification of the lens, is the most common worldwide cause of blindness in children. We aimed to identify the genetic cause of isolated autosomal-dominant lamellar cataract in a five-generation British family.MethodsWhole exome sequencing (WES) was performed on two affected individuals of the family and further validated by direct sequencing in family members.ResultsA novel missense mutation NM_001040667.2:c.190A>G;p.K64E was identified in the DNA-binding-domain of heat-shock transcription factor 4 (HSF4) and found to co-segregate with disease.ConclusionWe have identified a novel mutation in HSF4 in a large British pedigree causing dominant congenital lamellar cataract. This is the second mutation in this gene found in the British population. This mutation is likely to be dominant negative and affect the DNA-binding affinity of HSF4.
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PMID:A novel missense mutation in HSF4 causes autosomal-dominant congenital lamellar cataract in a British family. 2924 36