{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,14]],"date-time":"2026-01-14T21:13:36Z","timestamp":1768425216172,"version":"3.49.0"},"reference-count":20,"publisher":"BMJ","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Med Genet"],"published-print":{"date-parts":[[1995,3]]},"abstract":"<jats:p>We have screened two families for constitutional TP53 mutations, one family with Li-Fraumeni syndrome and the other with features of this syndrome. We report a germline mutation in exon 7 of the TP53 gene in the family with \"Li-Fraumeni-like\" syndrome. The mutation occurred at codon 245 and causes a Gly-Ser amino acid change. It was inherited by both affected and unaffected subjects. Malignant tumours from all members of this family showed strong positive nuclear immunohistochemical staining with antibodies CM-1 and DO1, directed against TP53. In contrast, no constitutional TP53 mutations were found in a \"classic\" Li-Fraumeni family. In this family positive staining was seen in both malignant and normal tissues. These results support previous findings that variants of the Li-Fraumeni syndrome exist since not all LFS families carry TP53 germline mutations. Secondly, immunohistochemical positivity is not synonymous with an underlying mutation and is therefore inadequate as an exclusive diagnostic marker.<\/jats:p>","DOI":"10.1136\/jmg.32.3.186","type":"journal-article","created":{"date-parts":[[2008,11,10]],"date-time":"2008-11-10T15:23:16Z","timestamp":1226330596000},"page":"186-190","source":"Crossref","is-referenced-by-count":11,"title":["Heterogeneity in Li-Fraumeni families: p53 mutation analysis and immunohistochemical staining."],"prefix":"10.1136","volume":"32","author":[{"given":"C","family":"MacGeoch","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G","family":"Turner","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L G","family":"Bobrow","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D M","family":"Barnes","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D T","family":"Bishop","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N K","family":"Spurr","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[1995,3,1]]},"reference":[{"key":"ref_1","first-page":"5358","article-title":"A cancer family syndrome in twenty four kindreds","volume":"48","author":"Li, F.P.; Fraumeni, J.F.J.; Mulvihill, J.J.","year":"1988","unstructured":"Li FP, Fraumeni JFJ, Mulvihill JJ, et al. 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