PMID- 8522328 OWN - NLM STAT- MEDLINE DCOM- 19960122 LR - 20190722 IS - 0340-6717 (Print) IS - 0340-6717 (Linking) VI - 96 IP - 6 DP - 1995 Dec TI - Chromosome 17 abnormalities and lack of TP53 mutations in paediatric central nervous system tumours. PG - 684-90 AB - Central nervous system (CNS) tumours are the most common solid tumours in children. Cytogenetic and molecular genetic studies of these neoplasms have previously shown abnormalities of chromosome 17, implicating genes on this autosome in tumorigenesis. To identify mutations in the TP53 tumour suppressor gene (17p13.1), we have sequenced the five highly conserved regions of this gene in 29 mixed paediatric CNS tumors. No mutations were detected by this analysis. In order to identify other candidate disease loci on chromosome 17, we have carried out a detailed deletion mapping analysis using 16 polymorphic DNA markers on 19 of the above tumours and an additional four cases. Abnormalities of chromosome 17 occurred in nine cases (39%), six of which were primitive neuroectodermal tumour (PNET)-medulloblastomas. These findings suggest that it is unlikely that the TP53 gene is directly involved in the development of common paediatric brain tumours. This is in contrast to findings from adult brain and other tumour types. Moreover, the frequency of chromosome 17 aberrations, especially in PNET-medulloblastomas, suggests that other genes on this chromosome contribute to tumourigenesis. FAU - Phelan, C M AU - Phelan CM AD - Ludwig Institute for Cancer Research, Karolinska Hospital, Stockholm, Sweden. FAU - Liu, L AU - Liu L FAU - Ruttledge, M H AU - Ruttledge MH FAU - Muntzning, K AU - Muntzning K FAU - Ridderheim, P A AU - Ridderheim PA FAU - Collins, V P AU - Collins VP LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Hum Genet JT - Human genetics JID - 7613873 RN - 0 (DNA Primers) SB - IM MH - Adolescent MH - Adult MH - Base Sequence MH - Brain Neoplasms/*genetics/pathology MH - Child MH - Child, Preschool MH - *Chromosome Aberrations MH - *Chromosome Deletion MH - *Chromosome Disorders MH - Chromosome Mapping MH - *Chromosomes, Human, Pair 17 MH - Conserved Sequence MH - DNA Primers MH - Female MH - *Genes, p53 MH - Humans MH - Infant MH - Infant, Newborn MH - Male MH - Molecular Sequence Data MH - *Mutation MH - Polymerase Chain Reaction MH - Polymorphism, Restriction Fragment Length MH - Spinal Cord Neoplasms/*genetics/pathology MH - Transcription, Genetic EDAT- 1995/12/01 00:00 MHDA- 1995/12/01 00:01 CRDT- 1995/12/01 00:00 PHST- 1995/12/01 00:00 [pubmed] PHST- 1995/12/01 00:01 [medline] PHST- 1995/12/01 00:00 [entrez] AID - 10.1007/BF00210300 [doi] PST - ppublish SO - Hum Genet. 1995 Dec;96(6):684-90. doi: 10.1007/BF00210300.