PMID- 25099128 OWN - NLM STAT- MEDLINE DCOM- 20150126 LR - 20181202 IS - 1934-6638 (Electronic) IS - 1934-662X (Linking) VI - 122 IP - 11 DP - 2014 Nov TI - Cytology specimens offer an effective alternative to formalin-fixed tissue as demonstrated by novel automated detection for ALK break-apart FISH testing and immunohistochemistry in lung adenocarcinoma. PG - 810-21 LID - 10.1002/cncy.21467 [doi] AB - BACKGROUND: Minimally invasive sampling by cytology or core needle biopsy often provides an initial diagnosis for treatment in patients with lung nodules. From these limited specimens, multiple molecular studies are frequently requested. Current guidelines from the US Food and Drug Administration recommend using formalin-fixed paraffin-embedded tissue sections for the detection of anaplastic lymphoma kinase (ALK) gene rearrangement by fluorescence in situ hybridization (FISH). The authors compared alcohol-fixed and formalin-fixed cytology specimens using a novel automated detection for ALK rearrangements by FISH and immunohistochemistry (IHC). METHODS: ALK FISH testing was performed on 129 lung adenocarcinomas from 71 cytology cases and 58 biopsy/resection specimens using Papanicolaou staining with integrated cytomorphology. IHC with the ALK D5F3 antibody was performed on cases with residual material (88 of 129 cases). RESULTS: The mean age of the patients was 66 years; there were 62 women and 67 men. ALK gene rearrangement was present in 4% of cytology specimens (3 of 71 specimens) and 7% of surgical specimens (4 of 58 specimens). FISH in 13 cases was technically unsuccessful. Of the 7 FISH-positive cases, only 2 cytology cases (4%) and 2 surgical cases (6%) were found to be positive with the ALK antibody, demonstrating 80% concordance. The one case found to be negative for ALK by IHC demonstrated a variant rearrangement of the ALK 2p23 gene locus by FISH. CONCLUSIONS: The results of the current study validate the usefulness of alcohol-fixed and/or formalin-fixed cytology specimens for ALK rearrangement by a novel automated FISH method. IHC using the D5F3 antibody for ALK is specific in this limited cohort. The authors also demonstrated that alcohol-fixed cytology specimens can be used for ALK rearrangement by automated FISH, alone or in conjunction with IHC. CI - (c) 2014 American Cancer Society. FAU - Rosenblum, Frida AU - Rosenblum F AD - Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts. FAU - Hutchinson, Lloyd M AU - Hutchinson LM FAU - Garver, Joann AU - Garver J FAU - Woda, Bruce AU - Woda B FAU - Cosar, Ediz AU - Cosar E FAU - Kurian, Elizabeth M AU - Kurian EM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140805 PL - United States TA - Cancer Cytopathol JT - Cancer cytopathology JID - 101499453 RN - 0 (Alcohols) RN - 0 (Fixatives) RN - 1HG84L3525 (Formaldehyde) RN - EC 2.7.10.1 (ALK protein, human) RN - EC 2.7.10.1 (Anaplastic Lymphoma Kinase) RN - EC 2.7.10.1 (ErbB Receptors) RN - EC 2.7.10.1 (Receptor Protein-Tyrosine Kinases) RN - EC 3.6.5.2 (ras Proteins) SB - IM MH - Adenocarcinoma/*diagnosis/genetics/metabolism MH - Adult MH - Aged MH - Aged, 80 and over MH - Alcohols/chemistry MH - Anaplastic Lymphoma Kinase MH - Cytodiagnosis/methods MH - ErbB Receptors/genetics MH - Female MH - Fixatives/*chemistry MH - Formaldehyde/chemistry MH - Gene Rearrangement MH - Humans MH - Immunohistochemistry/*methods MH - In Situ Hybridization, Fluorescence/*methods MH - Lung Neoplasms/*diagnosis/genetics/metabolism MH - Male MH - Middle Aged MH - Mutation MH - Papanicolaou Test/methods MH - Receptor Protein-Tyrosine Kinases/*genetics/metabolism MH - Reproducibility of Results MH - Sensitivity and Specificity MH - Tissue Fixation/methods MH - Young Adult MH - ras Proteins/genetics OTO - NOTNLM OT - ALK immunohistochemistry OT - anaplastic lymphoma kinase (ALK) OT - crizotinib OT - fluorescence in situ hybridization (FISH) OT - lung adenocarcinoma OT - lung cytology EDAT- 2014/08/08 06:00 MHDA- 2015/01/27 06:00 CRDT- 2014/08/08 06:00 PHST- 2014/03/13 00:00 [received] PHST- 2014/06/24 00:00 [revised] PHST- 2014/07/07 00:00 [accepted] PHST- 2014/08/08 06:00 [entrez] PHST- 2014/08/08 06:00 [pubmed] PHST- 2015/01/27 06:00 [medline] AID - 10.1002/cncy.21467 [doi] PST - ppublish SO - Cancer Cytopathol. 2014 Nov;122(11):810-21. doi: 10.1002/cncy.21467. Epub 2014 Aug 5.