PMID- 24942367 OWN - NLM STAT- MEDLINE DCOM- 20150330 LR - 20201209 IS - 1098-2264 (Electronic) IS - 1045-2257 (Linking) VI - 53 IP - 10 DP - 2014 Oct TI - Novel PRKD gene rearrangements and variant fusions in cribriform adenocarcinoma of salivary gland origin. PG - 845-56 LID - 10.1002/gcc.22195 [doi] AB - Polymorphous low-grade adenocarcinoma (PLGA) and cribriform adenocarcinoma of minor salivary gland (CAMSG) are low-grade carcinomas arising most often in oral cavity and oropharynx, respectively. Controversy exists as to whether these tumors represent separate entities or variants of one spectrum, as they appear to have significant overlap, but also clinicopathologic differences. As many salivary carcinomas harbor recurrent translocations, paired-end RNA sequencing and FusionSeq data analysis was applied for novel fusion discovery on two CAMSGs and two PLGAs. Validated rearrangements were then screened by fluorescence in situ hybridization (FISH) in 60 cases. Histologic classification was performed without knowledge of fusion status and included: 21 CAMSG, 18 classic PLGA, and 21 with "mixed/indeterminate" features. The RNAseq of 2 CAMSGs showed ARID1A-PRKD1 and DDX3X-PRKD1 fusions, respectively, while no fusion candidates were identified in two PLGAs. FISH for PRKD1 rearrangements identified 11 additional cases (22%), two more showing ARID1A-PRKD1 fusions. As PRKD2 and PRKD3 share similar functions with PRKD1 in the diacylglycerol and protein kinase C signal transduction pathway, we expanded the investigation for these genes by FISH. Six additional cases each showed PRKD2 and PRKD3 rearrangements. Of the 26 (43%) fusion-positive tumors, there were 16 (80%) CAMSGs and 9 (45%) indeterminate cases. A PRKD2 rearrangement was detected in one PLGA (6%). We describe novel and recurrent gene rearrangements in PRKD1-3 primarily in CAMSG, suggesting a possible pathogenetic dichotomy from "classic" PLGA. However, the presence of similar genetic findings in half of the indeterminate cases and a single PLGA suggests a possible shared pathogenesis for these tumor types. CI - (c) 2014 Wiley Periodicals, Inc. FAU - Weinreb, Ilan AU - Weinreb I AD - Department of Pathology, University Health Network, Toronto, ON, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada. FAU - Zhang, Lei AU - Zhang L FAU - Tirunagari, Laxmi M S AU - Tirunagari LM FAU - Sung, Yun-Shao AU - Sung YS FAU - Chen, Chun-Liang AU - Chen CL FAU - Perez-Ordonez, Bayardo AU - Perez-Ordonez B FAU - Clarke, Blaise A AU - Clarke BA FAU - Skalova, Alena AU - Skalova A FAU - Chiosea, Simion I AU - Chiosea SI FAU - Seethala, Raja R AU - Seethala RR FAU - Waggott, Daryl AU - Waggott D FAU - Boutros, Paul C AU - Boutros PC FAU - How, Christine AU - How C FAU - Liu, Fei-Fei AU - Liu FF FAU - Irish, Jonathan C AU - Irish JC FAU - Goldstein, David P AU - Goldstein DP FAU - Gilbert, Ralph AU - Gilbert R FAU - Ud Din, Nasir AU - Ud Din N FAU - Assaad, Adel AU - Assaad A FAU - Hornick, Jason L AU - Hornick JL FAU - Thompson, Lester D R AU - Thompson LD FAU - Antonescu, Cristina R AU - Antonescu CR LA - eng GR - P01CA47179/CA/NCI NIH HHS/United States GR - P50 CA 140146-01/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20140618 PL - United States TA - Genes Chromosomes Cancer JT - Genes, chromosomes & cancer JID - 9007329 RN - 0 (ARID1A protein, human) RN - 0 (DNA-Binding Proteins) RN - 0 (Nuclear Proteins) RN - 0 (Protein Isoforms) RN - 0 (Transcription Factors) RN - EC 2.7.10.- (protein kinase D) RN - EC 2.7.11.13 (Protein Kinase C) RN - EC 3.6.1.- (DDX3X protein, human) RN - EC 3.6.4.13 (DEAD-box RNA Helicases) SB - IM MH - Adenocarcinoma/*genetics/metabolism/pathology MH - Adult MH - Aged MH - Aged, 80 and over MH - Cell Line MH - DEAD-box RNA Helicases/genetics/metabolism MH - DNA-Binding Proteins MH - Female MH - *Gene Fusion MH - High-Throughput Nucleotide Sequencing MH - Humans MH - In Situ Hybridization, Fluorescence MH - Male MH - Middle Aged MH - Nuclear Proteins/genetics/metabolism MH - Protein Isoforms/genetics/metabolism MH - Protein Kinase C/*genetics/metabolism MH - Salivary Gland Neoplasms/*genetics/metabolism/pathology MH - Salivary Glands/metabolism MH - Transcription Factors/genetics/metabolism MH - Young Adult EDAT- 2014/06/20 06:00 MHDA- 2015/03/31 06:00 CRDT- 2014/06/20 06:00 PHST- 2014/03/13 00:00 [received] PHST- 2014/05/29 00:00 [accepted] PHST- 2014/06/20 06:00 [entrez] PHST- 2014/06/20 06:00 [pubmed] PHST- 2015/03/31 06:00 [medline] AID - 10.1002/gcc.22195 [doi] PST - ppublish SO - Genes Chromosomes Cancer. 2014 Oct;53(10):845-56. doi: 10.1002/gcc.22195. Epub 2014 Jun 18.