PMID- 25601488 OWN - NLM STAT- MEDLINE DCOM- 20151116 LR - 20181202 IS - 1872-8332 (Electronic) IS - 0169-5002 (Linking) VI - 87 IP - 3 DP - 2015 Mar TI - Identification of atypical ATRNL1 insertion to EML4-ALK fusion gene in NSCLC. PG - 318-20 LID - S0169-5002(15)00003-3 [pii] LID - 10.1016/j.lungcan.2015.01.002 [doi] AB - We herein present a rare case of an EML4-ALK positive patient. A 61-year-old man was diagnosed with locoregional non-small cell lung cancer (NSCLC). No EGFR mutations were detected, and therefore the ALK rearrangement was evaluated using immunohistochemistry (IHC), fluorescence in situ hybridization (FISH) and the reverse transcription PCR (RT-PCR) method for EML4-ALK. All methods showed a positive result and, therefore, the patient was treated with crizotinib with a good therapeutic response. However, a detailed RT-PCR analysis and sequencing revealed an unexpected 138 bp insertion of attractin-like 1 (ATRNL1) gene into the EML4-ALK fusion gene. In our case, the positive therapeutic response suggests that ATRNL1 insertion does not affect EML4-ALK's sensitivity to crizotinib. This case shows great EML4-ALK heterogeneity and also that basic detection methods (IHC, FISH) cannot fully specify ALK rearrangement but in many cases a full specification seems to be important for an effective TKI indication, and sequencing ALK variants might contribute to optimized patient selection. CI - Copyright (c) 2015 Elsevier Ireland Ltd. All rights reserved. FAU - Robesova, Blanka AU - Robesova B AD - Department of Internal Medicine-Hematology and Oncology, Masaryk University and University Hospital Brno, Brno, Czech Republic. Electronic address: blanka.robesova@fnbrno.cz. FAU - Bajerova, Monika AU - Bajerova M AD - Department of Internal Medicine-Hematology and Oncology, Masaryk University and University Hospital Brno, Brno, Czech Republic. FAU - Hausnerova, Jitka AU - Hausnerova J AD - Department of Pathology, Masaryk University and University Hospital Brno, Brno, Czech Republic. FAU - Skrickova, Jana AU - Skrickova J AD - Department of Respiratory Diseases and Tuberculosis, Masaryk University and University Hospital Brno, Brno, Czech Republic. FAU - Tomiskova, Marcela AU - Tomiskova M AD - Department of Respiratory Diseases and Tuberculosis, Masaryk University and University Hospital Brno, Brno, Czech Republic. FAU - Dvorakova, Dana AU - Dvorakova D AD - Department of Internal Medicine-Hematology and Oncology, Masaryk University and University Hospital Brno, Brno, Czech Republic. LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150110 PL - Ireland TA - Lung Cancer JT - Lung cancer (Amsterdam, Netherlands) JID - 8800805 RN - 0 (EML4-ALK fusion protein, human) RN - 0 (Oncogene Proteins, Fusion) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Pyrazoles) RN - 0 (Pyridines) RN - 53AH36668S (Crizotinib) SB - IM MH - Base Sequence MH - Carcinoma, Non-Small-Cell Lung/diagnosis/drug therapy/*genetics MH - Crizotinib MH - Humans MH - Lung Neoplasms/diagnosis/drug therapy/*genetics MH - Male MH - Middle Aged MH - Molecular Sequence Data MH - *Mutagenesis, Insertional MH - Neoplasm Staging MH - Oncogene Proteins, Fusion/chemistry/*genetics MH - Protein Kinase Inhibitors/therapeutic use MH - Pyrazoles/therapeutic use MH - Pyridines/therapeutic use MH - Radiography, Thoracic MH - Sequence Analysis, DNA MH - Treatment Outcome OTO - NOTNLM OT - ATRNL1 OT - Crizotinib OT - EML4-ALK OT - Lung cancer OT - NSCLC OT - Targeted therapy EDAT- 2015/01/21 06:00 MHDA- 2015/11/17 06:00 CRDT- 2015/01/21 06:00 PHST- 2014/11/28 00:00 [received] PHST- 2014/12/31 00:00 [revised] PHST- 2015/01/02 00:00 [accepted] PHST- 2015/01/21 06:00 [entrez] PHST- 2015/01/21 06:00 [pubmed] PHST- 2015/11/17 06:00 [medline] AID - S0169-5002(15)00003-3 [pii] AID - 10.1016/j.lungcan.2015.01.002 [doi] PST - ppublish SO - Lung Cancer. 2015 Mar;87(3):318-20. doi: 10.1016/j.lungcan.2015.01.002. Epub 2015 Jan 10.