Analysis of 31 CFTR mutations by polymerase chain reaction/oligonucleotide ligation assay in a pilot screening of 4476 newborns for cystic fibrosis

P. Gasparini, E. Arbustini, G. Restagno, L. Zelante, P. Stanziale, L. Gatta, L. Sbaiz, A. M. Sedita, N. Banchieri, L. Sapone, G. C. Fiorucci, E. Brinson, E. Shulse, E. Rappaport, P. Fortina

Research output: Contribution to journalArticle

Abstract

Objectives - Molecular biological testing for genetic diseases has grown rapidly, but speed, accuracy, specificity, sensitivity, throughput, and cost become more important as large scale screening is considered. This is a pilot study of an assay for the simultaneous detection of up to 31 cystic fibrosis mutations in a multicentre population based screening of 4476 Italian newborns. Methods - The assay is a polymerase chain reaction, followed by an oligonucleotide ligation assay (PCR/OLA) and finally a sequence coded separation. It allows the detection of up to 31 mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. Guthrie spots were used as a source of template DNA. Results - 144 carriers were detected during the analysis of 4476 samples, which translates into a carrier frequency of 1/31.1. Forty two carriers were detected from 1341 samples in Pavia (1/31.9), 53 from 1574 in Turin (1/29.7), and 49 from 1561 in San Giovanni Rotondo (1/31.8). Fifteen different mutations were detected, the most common being ΔF508 (0.625). Other common mutations included G542X (16 of 144), which was particularly common in southern Italy (14 of 49), N1303K (8 of 144), and R117H (8 of 144), detected only in the northern centres. Conclusions - PCR/OLA is a robust, accurate, user friendly method for cystic fibrosis screening of newborns using blood spots in a semiautomated way at a low cost per mutation (0.8 Euro).

Original languageEnglish
Pages (from-to)67-69
Number of pages3
JournalJournal of Medical Screening
Volume6
Issue number2
Publication statusPublished - 1999

Keywords

  • CFTR gene
  • Genetic screening
  • Mutation detection
  • Newborn
  • Polymerase chain reaction/oligonucleotide ligation assay (PCR/OLA)

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

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    Gasparini, P., Arbustini, E., Restagno, G., Zelante, L., Stanziale, P., Gatta, L., Sbaiz, L., Sedita, A. M., Banchieri, N., Sapone, L., Fiorucci, G. C., Brinson, E., Shulse, E., Rappaport, E., & Fortina, P. (1999). Analysis of 31 CFTR mutations by polymerase chain reaction/oligonucleotide ligation assay in a pilot screening of 4476 newborns for cystic fibrosis. Journal of Medical Screening, 6(2), 67-69.