PMID- 17693184 OWN - NLM STAT- MEDLINE DCOM- 20071004 LR - 20081121 IS - 0165-4608 (Print) IS - 0165-4608 (Linking) VI - 177 IP - 1 DP - 2007 Aug TI - Heterogeneity of PLAG1 gene rearrangements in pleomorphic adenoma. PG - 1-5 AB - Pleomorphic adenoma (PA), a benign mixed salivary gland tumor, has been associated with abnormal karyotypes in up to 70% of cases, with nonrandom involvement of 8q12, the locus of the pleomorphic adenoma (PLAG1) gene. In this study, cytogenetics and fluorescence in situ hybridization (FISH) were used to investigate PLAG1 involvement in PA from seven patients. There were two males and five females ranging in age from 25 to 65 years. Samples of parotid gland tissue from the tumor sites, set up as solid tumor cultures, showed a normal karyotype in two cases [46,XY;46,XX] and cytogenetic abnormalities in five cases (71%). The abnormalities comprised one variant translocation [t(1;4;8)(p32;q35;q12)], two classic translocations [t(5;8)(p13;q12)], one novel deletion [del(12)(p11.2p12.1)], and a novel insertion [ins(9;8)(p22;q12q21.1)]. FISH was performed in all cases by using two probes from the RP11 library, flanking PLAG1; a sequence 1.48 megabases (Mb) upstream and another 2.27 Mb downstream, covering a total area of 3.8 Mb. The PLAG1 gene was intact and normally situated in four cases - the 46,XY, 46,XX, del(12p), and one t(5;8). PLAG1 was disrupted in three cases - one t(5;8), ins(9;8), and t(1;4;8). In addition, genomic instability was seen in two cases, one with PLAG1 amplification in the form of a homogeneously staining region, and the other in der(8) ring formation. The data provide further unique cases showing the complexity of PLAG1 gene rearrangements in PA. FAU - Kandasamy, Jothy AU - Kandasamy J AD - Department of Cytogenetics, Children's Hospital at Westmead, Locked Bag 4001, Westmead NSW 2145, Australia. FAU - Smith, Arabella AU - Smith A FAU - Diaz, Sara AU - Diaz S FAU - Rose, Barbara AU - Rose B FAU - O'Brien, Christopher AU - O'Brien C LA - eng PT - Journal Article PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 RN - 0 (DNA-Binding Proteins) RN - 0 (PLAG1 protein, human) SB - IM MH - Adenoma, Pleomorphic/*genetics MH - Adult MH - Aged MH - Chromosome Banding MH - Chromosomes, Human, Pair 1/genetics MH - Chromosomes, Human, Pair 3/genetics MH - Chromosomes, Human, Pair 5/genetics MH - Chromosomes, Human, Pair 8/genetics MH - DNA-Binding Proteins/*genetics MH - Female MH - *Gene Rearrangement MH - *Genetic Variation MH - Genotype MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - Male MH - Middle Aged MH - Salivary Gland Neoplasms/*genetics MH - Translocation, Genetic EDAT- 2007/08/19 09:00 MHDA- 2007/10/05 09:00 CRDT- 2007/08/19 09:00 PHST- 2007/01/30 00:00 [received] PHST- 2007/03/22 00:00 [revised] PHST- 2007/04/18 00:00 [accepted] PHST- 2007/08/19 09:00 [pubmed] PHST- 2007/10/05 09:00 [medline] PHST- 2007/08/19 09:00 [entrez] AID - S0165-4608(07)00220-8 [pii] AID - 10.1016/j.cancergencyto.2007.04.006 [doi] PST - ppublish SO - Cancer Genet Cytogenet. 2007 Aug;177(1):1-5. doi: 10.1016/j.cancergencyto.2007.04.006.