PMID- 10234507 OWN - NLM STAT- MEDLINE DCOM- 19990628 LR - 20220129 IS - 1018-4813 (Print) IS - 1018-4813 (Linking) VI - 7 IP - 3 DP - 1999 Apr TI - Rapid and efficient ATM mutation detection by fluorescent chemical cleavage of mismatch: identification of four novel mutations. PG - 310-20 AB - Mutations in the Ataxia Telangiectasia Mutated (ATM) gene are responsible for the autosomal recessive disease Ataxia Telangiectasia (A-T). A wide variety of mutations scattered across the entire coding region (9168bp) of ATM have been found, which presents a challenge in developing an efficient mutation screening strategy for detecting unknown mutations. Fluorescent chemical cleavage of mismatch (FCCM) is an ideal mutation screening method, offering a non-radioactive alternative to other techniques such as restriction endonuclease fingerprinting (REF). Using FCCM, we have developed an efficient, accurate and sensitive mutation detection method for screening RT-PCR products for ATM mutations. We have identified seven ATM mutations in five A-T families, four of which are previously unknown. We quantified ATM protein expression in four of the families and found variable ATM protein expression (0-6.4%), further evidence for mutant ATM protein expression in both classic and variant A-T patients. We conclude that FCCM offers a robust ATM mutation detection method and can be used to screen for ATM mutations in cancer-prone populations. FAU - Izatt, L AU - Izatt L AD - Division of Medical and Molecular Genetics GKT, Guy's Hospital, London, UK. l.izatt@umds.ac.uk FAU - Vessey, C AU - Vessey C FAU - Hodgson, S V AU - Hodgson SV FAU - Solomon, E AU - Solomon E LA - eng GR - G9600577/MRC_/Medical Research Council/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Eur J Hum Genet JT - European journal of human genetics : EJHG JID - 9302235 RN - 0 (Cell Cycle Proteins) RN - 0 (DNA-Binding Proteins) RN - 0 (Fluorescent Dyes) RN - 0 (Proteins) RN - 0 (Reagent Kits, Diagnostic) RN - 0 (Tumor Suppressor Proteins) RN - EC 2.7.11.1 (ATM protein, human) RN - EC 2.7.11.1 (Ataxia Telangiectasia Mutated Proteins) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) SB - IM MH - Adolescent MH - Adult MH - Alleles MH - Alternative Splicing MH - Ataxia Telangiectasia/*genetics MH - Ataxia Telangiectasia Mutated Proteins MH - Blotting, Western MH - Cell Cycle Proteins MH - Child MH - Child, Preschool MH - DNA-Binding Proteins MH - Female MH - *Fluorescent Dyes MH - Frameshift Mutation MH - Humans MH - Male MH - *Mutation MH - Mutation, Missense MH - *Protein Serine-Threonine Kinases MH - Proteins/*genetics MH - Reagent Kits, Diagnostic MH - Time Factors MH - Tumor Suppressor Proteins EDAT- 1999/05/11 00:00 MHDA- 1999/05/11 00:01 CRDT- 1999/05/11 00:00 PHST- 1999/05/11 00:00 [pubmed] PHST- 1999/05/11 00:01 [medline] PHST- 1999/05/11 00:00 [entrez] AID - 10.1038/sj.ejhg.5200288 [doi] PST - ppublish SO - Eur J Hum Genet. 1999 Apr;7(3):310-20. doi: 10.1038/sj.ejhg.5200288.