PMID- 10208439 OWN - NLM STAT- MEDLINE DCOM- 19990601 LR - 20211203 IS - 0950-9232 (Print) IS - 0950-9232 (Linking) VI - 18 IP - 9 DP - 1999 Mar 4 TI - Somatic mutation of the Peutz-Jeghers syndrome gene, LKB1/STK11, in malignant melanoma. PG - 1777-80 AB - Mutations in LKB1/STK11, a gene mapping to chromosome 19p13.3 and encoding a widely expressed serine/threonine kinase, were recently identified as the cause of Peutz-Jeghers syndrome. Despite the hamartomatous polyps and increased cancer risk associated with this syndrome, somatic alterations in LKB1/STK11 have not been identified in human tumours. Prompted by another feature of the syndrome, lentigines of the lips and oral mucosa, we evaluated the status of LKB1/STK11 expression, deletion, and mutation in cell lines and tumour samples from 35 patients with sporadic malignant melanoma. Two somatic mutations were identified, a nonsense mutation (Glu170Stop) causing exon skipping and intron retention, and a missense mutation (Asp194Tyr) affecting an invariant residue in the catalytic subunit of LKB1/STK11. Our data suggest that LKB1/STK11 may contribute to tumorigenesis in a small fraction of malignant melanomas. FAU - Guldberg, P AU - Guldberg P AD - Department of Tumour Cell Biology, Institute of Cancer Biology, Danish Cancer Society, Copenhagen. FAU - thor Straten, P AU - thor Straten P FAU - Ahrenkiel, V AU - Ahrenkiel V FAU - Seremet, T AU - Seremet T FAU - Kirkin, A F AU - Kirkin AF FAU - Zeuthen, J AU - Zeuthen J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Oncogene JT - Oncogene JID - 8711562 RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) RN - EC 2.7.11.1 (STK11 protein, human) RN - EC 2.7.11.3 (AMP-Activated Protein Kinase Kinases) SB - IM MH - AMP-Activated Protein Kinase Kinases MH - Humans MH - Melanoma MH - *Mutation MH - Peutz-Jeghers Syndrome/*enzymology/*genetics MH - Protein Serine-Threonine Kinases/*genetics MH - Tumor Cells, Cultured EDAT- 1999/04/20 00:00 MHDA- 1999/04/20 00:01 CRDT- 1999/04/20 00:00 PHST- 1999/04/20 00:00 [pubmed] PHST- 1999/04/20 00:01 [medline] PHST- 1999/04/20 00:00 [entrez] AID - 10.1038/sj.onc.1202486 [doi] PST - ppublish SO - Oncogene. 1999 Mar 4;18(9):1777-80. doi: 10.1038/sj.onc.1202486.