PMID- 32467651 OWN - NLM STAT- MEDLINE DCOM- 20211012 LR - 20230210 IS - 1530-0285 (Electronic) IS - 0893-3952 (Linking) VI - 33 IP - 12 DP - 2020 Dec TI - ALK rearranged renal cell carcinoma (ALK-RCC): a multi-institutional study of twelve cases with identification of novel partner genes CLIP1, KIF5B and KIAA1217. PG - 2564-2579 LID - 10.1038/s41379-020-0578-0 [doi] AB - ALK rearranged renal cell carcinoma (ALK-RCC) has recently been included in 2016 WHO classification as a provisional entity. In this study, we describe 12 ALK-RCCs from 8 institutions, with detailed clinical, pathological, immunohistochemical (IHC), fluorescence in situ hybridization (FISH), and next generation sequencing (NGS) analyses. Patients' age ranged from 25 to 68 years (mean, 46.3 years). Seven patients were females and five were males (M:F = 1:1.4). Tumor size ranged from 17 to 70 mm (mean 31.5, median 25 mm). The pTNM stage included: pT1a (n = 7), pT1b (n = 1), and pT3a (n = 4). Follow-up was available for 9/12 patients (range: 2 to 153 months; mean 37.6 months); 8 patients were alive without disease and one was alive with distant metastases. The tumors demonstrated heterogeneous, 'difficult to classify' morphology in 10/12 cases, typically showing diverse architectural and cellular morphologies, including papillary, tubular, tubulocystic, solid, sarcomatoid (spindle cell), rhabdoid, signet-ring cell, and intracytoplasmic vacuoles, often set in a mucinous background. Of the remaining two tumors, one showed morphology resembling mucinous tubular and spindle cell renal cell carcinoma (MTSC RCC-like) and one was indistinguishable from metanephric adenoma. One additional case also showed a focal metanephric adenoma-like area, in an otherwise heterogeneous tumor. By IHC, all tumors were diffusely positive for ALK and PAX8. In both cases with metanephric adenoma-like features, WT1 and ALK were coexpressed. ALK rearrangement was identified in 9/11 tumors by FISH. ALK fusion partners were identified by NGS in all 12 cases, including the previously reported: STRN (n = 3), TPM3 (n = 3), EML4 (n = 2), and PLEKHA7 (n = 1), and also three novel fusion partners: CLIP1 (n = 1), KIF5B (n = 1), and KIAA1217 (n = 1). ALK-RCC represents a genetically distinct entity showing a heterogeneous histomorphology, expanded herein to include unreported metanephric adenoma-like and MTSC RCC-like variants. We advocate a routine ALK IHC screening for "unclassifiable RCCs" with heterogeneous features. FAU - Kuroda, Naoto AU - Kuroda N AD - Department of Diagnostic Pathology, Kochi Red Cross Hospital, Kochi, Japan. FAU - Trpkov, Kiril AU - Trpkov K AUID- ORCID: 0000-0003-3142-8846 AD - Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, AB, Canada. FAU - Gao, Yuan AU - Gao Y AD - Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, AB, Canada. FAU - Tretiakova, Maria AU - Tretiakova M AD - Department of Pathology, University of Washington, School of Medicine, Seattle, WA, USA. FAU - Liu, Yajuan J AU - Liu YJ AD - Department of Pathology, University of Washington, School of Medicine, Seattle, WA, USA. FAU - Ulamec, Monika AU - Ulamec M AD - Ljudevit Jurak Pathology Department, University Clinical Hospital Center Sestre Milosrdice, Zagreb; Pathology Department, Medical Faculty, Zagreb, Croatia. FAU - Takeuchi, Kengo AU - Takeuchi K AUID- ORCID: 0000-0002-1599-5800 AD - Division of Pathology and Pathology Project of Molecular Targets, The Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan. FAU - Agaimy, Abbas AU - Agaimy A AD - Institute of Pathology, Friedrich-Alexander University Erlangen-Nuremberg, University Hospital of Erlangen, Erlangen, Germany. FAU - Przybycin, Christopher AU - Przybycin C AD - Robert J. Tomsich Pathology and Laboratory Medicine Institute and Glickman Urological Institute, Cleveland Clinic, Cleveland, OH, USA. FAU - Magi-Galluzzi, Cristina AU - Magi-Galluzzi C AD - Department of Pathology, School of Medicine, University of Alabama, Birmingham, AL, USA. FAU - Fushimi, Soichiro AU - Fushimi S AD - Department of Pathology, Himeji Red Cross Hospital, Hyogo, Japan. FAU - Kojima, Fumiyoshi AU - Kojima F AD - Department of Human Pathology, Wakayama Medical University, Wakayama, Japan. FAU - Sibony, Malthide AU - Sibony M AD - Anatomie et Cytologie Pathologiques, Cochin Hospital, Paris University, Paris, France. FAU - Hang, Jen-Fan AU - Hang JF AUID- ORCID: 0000-0003-4299-2784 AD - Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei, Taiwan. FAU - Pan, Chin-Chen AU - Pan CC AD - Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei, Taiwan. FAU - Yilmaz, Asli AU - Yilmaz A AD - Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, AB, Canada. FAU - Siadat, Farshid AU - Siadat F AD - Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, AB, Canada. FAU - Sugawara, Emiko AU - Sugawara E AD - Department of Pathology, Musashino Red Cross Hospital, Tokyo, Japan. FAU - Just, Pierre-Alexandre AU - Just PA AD - Anatomie et Cytologie Pathologiques, Cochin Hospital, Paris University, Paris, France. FAU - Ptakova, Nikola AU - Ptakova N AUID- ORCID: 0000-0002-2561-4717 AD - Second Faculty of Medicine, Charles University, Prague, Czech Republic. AD - Department of Pathology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic. FAU - Hes, Ondrej AU - Hes O AD - Department of Pathology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic. hes@biopticka.cz. LA - eng PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20200528 PL - United States TA - Mod Pathol JT - Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc JID - 8806605 RN - 0 (Biomarkers, Tumor) RN - 0 (KIAA1217 protein, human) RN - 0 (KIF5B protein, human) RN - 0 (Microtubule-Associated Proteins) RN - 0 (Neoplasm Proteins) RN - 0 (Proteins) RN - 148349-95-5 (cytoplasmic linker protein 170) RN - EC 2.7.10.1 (ALK protein, human) RN - EC 2.7.10.1 (Anaplastic Lymphoma Kinase) RN - EC 3.6.4.4 (Kinesins) SB - IM MH - Adult MH - Aged MH - Anaplastic Lymphoma Kinase/*genetics MH - Asia MH - Biomarkers, Tumor/*genetics MH - Carcinoma, Renal Cell/enzymology/*genetics/secondary MH - Europe MH - Female MH - *Gene Fusion MH - *Gene Rearrangement MH - High-Throughput Nucleotide Sequencing MH - Humans MH - Immunohistochemistry MH - In Situ Hybridization, Fluorescence MH - Kidney Neoplasms/enzymology/*genetics/pathology MH - Kinesins/*genetics MH - Male MH - Microtubule-Associated Proteins/*genetics MH - Middle Aged MH - Neoplasm Proteins/*genetics MH - North America MH - Proteins/*genetics MH - Retrospective Studies EDAT- 2020/05/30 06:00 MHDA- 2021/10/13 06:00 CRDT- 2020/05/30 06:00 PHST- 2020/02/19 00:00 [received] PHST- 2020/05/15 00:00 [accepted] PHST- 2020/05/15 00:00 [revised] PHST- 2020/05/30 06:00 [pubmed] PHST- 2021/10/13 06:00 [medline] PHST- 2020/05/30 06:00 [entrez] AID - S0893-3952(22)00425-2 [pii] AID - 10.1038/s41379-020-0578-0 [doi] PST - ppublish SO - Mod Pathol. 2020 Dec;33(12):2564-2579. doi: 10.1038/s41379-020-0578-0. Epub 2020 May 28.