PMID- 23056620 OWN - NLM STAT- MEDLINE DCOM- 20130531 LR - 20211021 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 7 IP - 10 DP - 2012 TI - Apocrine-eccrine carcinomas: molecular and immunohistochemical analyses. PG - e47290 LID - 10.1371/journal.pone.0047290 [doi] LID - e47290 AB - Apocrine-eccrine carcinomas are rare and associated with poor prognosis. Currently there is no uniform treatment guideline. Chemotherapeutic drugs that selectively target cancer-promoting pathways may complement conventional therapeutic approaches. However, studies on genetic alterations and EGFR and Her2 status of apocrine-eccrine carcinomas are few in number. In addition, hormonal studies have not been comprehensive and performed only on certain subsets of apocrine-eccrine carcinomas. To investigate whether apocrine-eccrine carcinomas express hormonal receptors or possess activation of oncogenic pathways that can be targeted by available chemotherapeutic agent we performed immunohistochemistry for AR, PR, ER, EGFR, and HER2 expression; fluorescence in situ hybridization (FISH) for EGFR and ERBB2 gene amplification; and molecular analyses for recurrent mutations in 15 cancer genes including AKT-1, EGFR, PIK3CA, and TP53 on 54 cases of apocrine-eccrine carcinomas. They include 10 apocrine carcinomas, 7 eccrine carcinomas, 9 aggressive digital papillary adenocarcinomas, 10 hidradenocarcinomas, 11 porocarcinomas, 1 adenoid cystic carcinoma, 4 malignant chondroid syringomas, 1 malignant spiradenoma, and 1 malignant cylindroma. AR, ER, PR, EGFR and HER2 expression was seen in 36% (19/53), 27% (14/51), 16% (8/51), 85% (44/52) and 12% (6/52), respectively. Polysomy or trisomy of EGFR was detected by FISH in 30% (14/46). Mutations of AKT-1, PIK3CA, and TP53 were detected in 1, 3, and 7 cases, respectively (11/47, 23%). Additional investigation regarding the potential treatment of rare cases of apocrine-eccrine carcinomas with PI3K/Akt/mTOR pathway inhibitors, currently in clinical testing, may be of clinical interest. FAU - Le, Long P AU - Le LP AD - Department of Pathology, Massachusetts General Hospital, Boston, United States of America. FAU - Dias-Santagata, Dora AU - Dias-Santagata D FAU - Pawlak, Amanda C AU - Pawlak AC FAU - Cosper, Arjola K AU - Cosper AK FAU - Nguyen, Anh Thu AU - Nguyen AT FAU - Selim, M Angelica AU - Selim MA FAU - Deng, April AU - Deng A FAU - Horick, Nora K AU - Horick NK FAU - Iafrate, A John AU - Iafrate AJ FAU - Mihm, Martin C Jr AU - Mihm MC Jr FAU - Hoang, Mai P AU - Hoang MP LA - eng PT - Journal Article DEP - 20121009 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - EC 2.7.10.1 (ErbB Receptors) RN - EC 2.7.10.1 (Receptor, ErbB-2) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Apocrine Glands/*metabolism/*pathology MH - Carcinoma/*metabolism/*pathology MH - Eccrine Glands/*metabolism/*pathology MH - ErbB Receptors/genetics/metabolism MH - Female MH - Humans MH - Immunohistochemistry/*methods MH - In Situ Hybridization, Fluorescence MH - Male MH - Middle Aged MH - Receptor, ErbB-2/genetics/metabolism MH - Young Adult PMC - PMC3467209 COIS- Competing Interests: DDS and AJI submitted a patent application (pending) for the SNaPshot(r) genotyping methods used in this study, and are consultants for BioReference Laboratories Inc. The remaining authors have no conflicts of interest to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials. EDAT- 2012/10/12 06:00 MHDA- 2013/06/01 06:00 PMCR- 2012/10/09 CRDT- 2012/10/12 06:00 PHST- 2012/06/12 00:00 [received] PHST- 2012/09/13 00:00 [accepted] PHST- 2012/10/12 06:00 [entrez] PHST- 2012/10/12 06:00 [pubmed] PHST- 2013/06/01 06:00 [medline] PHST- 2012/10/09 00:00 [pmc-release] AID - PONE-D-12-17581 [pii] AID - 10.1371/journal.pone.0047290 [doi] PST - ppublish SO - PLoS One. 2012;7(10):e47290. doi: 10.1371/journal.pone.0047290. Epub 2012 Oct 9.