A c.1363C>T (p.R455X) nonsense mutation of RB1 gene in a southern Chinese retinoblastoma pedigree.

Abstract:

:Retinoblastoma (RB) is the most common malignant intraocular tumor in children. Fifty percent of RB patients are carriers of a predisposing germline mutation with high penetrance. RB1 has been identified as the only pathological gene. We present the rapid detection of an RB1 gene mutation in a Han pedigree of two RB patients from southern China. Total RNA was extracted from whole blood for reverse transcriptase-polymerase chain reaction (PCR) to analyze RB1 transcripts, and genomic DNA for PCR and direct sequencing to test RB1 exons. Allele-specific PCR was used to verify the mutation. The results showed that the bilaterally affected son and the unilaterally affected father were both heterozygous for the nonsense mutation c.1363C>T (p.R455X) in exon 14 of RB1. Our studies suggest the molecular basis of RB in this Chinese family and provide further evidence that codon 455 is one of the recurrent spots for mutations in RB1.

authors

Chen CY,Xu CM,Du ZF,Chen XL,Ren GL,Zhang XN

doi

10.1089/gtmb.2009.0162

subject

Has Abstract

pub_date

2010-04-01 00:00:00

pages

193-6

issue

2

eissn

1945-0265

issn

1945-0257

journal_volume

14

pub_type

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