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  • Title: Detection and characterization of point mutations in the choroideremia candidate gene by PCR-SSCP analysis and direct DNA sequencing.
    Author: van den Hurk JA, van de Pol TJ, Molloy CM, Brunsmann F, Rüther K, Zrenner E, Pinckers AJ, Pawlowitzki IH, Bleeker-Wagemakers EM, Wieringa B.
    Journal: Am J Hum Genet; 1992 Jun; 50(6):1195-202. PubMed ID: 1598901.
    Abstract:
    By making use of positional cloning strategies we recently isolated a candidate gene for choroideremia (CHM), which is transcribed in retina, choroid, and/or retinal pigment epithelium. The gene contains an open reading frame that is structurally altered in 10 CHM patients with sizable deletions and in a female patient with a balanced translocation involving the Xq21 band. Employing PCR-SSCP analysis and direct DNA sequencing we have now detected and characterized different point mutations in five patients with CHM. Each of these mutations introduces a termination codon into the open reading frame of the CHM candidate gene, thereby predicting a distinct truncated protein product. Together these findings provide convincing evidence for the candidate gene being identical with the choroideremia gene.
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