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Challa B, Jones D, Kim AC, D'Souza DM, Esnakula AK. NTRK-rearranged mesenchymal tumour in oesophagus with DOG1 immunohistochemical expression: is it a gastrointestinal stromal tumour? Pathology 2024; 56:602-604. [PMID: 38101957 DOI: 10.1016/j.pathol.2023.09.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/05/2023] [Accepted: 09/19/2023] [Indexed: 12/17/2023]
Affiliation(s)
- Bindu Challa
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Daniel Jones
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH, USA; James Molecular Pathology Laboratory, Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Alex C Kim
- Department of Surgery, Division of Surgical Oncology, James Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Desmond M D'Souza
- Division of Thoracic Surgery, Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Ashwini Kumar Esnakula
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH, USA.
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2
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Dashti NK, Schukow CP, Kilpatrick SE. Back to the future! Selected bone and soft tissue neoplasms with shared genetic alterations but differing morphological and immunohistochemical phenotypes. Hum Pathol 2024; 147:129-138. [PMID: 38521373 DOI: 10.1016/j.humpath.2024.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 03/13/2024] [Indexed: 03/25/2024]
Abstract
Bone and soft tissue tumors (BST) are a highly heterogeneous group largely classified by their line of differentiation, based on their resemblance to their normal counterpart in adult tissue. Yet, rendering a specific diagnosis can be challenging, primarily due to their rarity and overlapping histopathologic features or clinical presentations. Over the past few decades, seemingly histogenetic-specific gene fusions/translocations and amplifications have been discovered, aiding in a more nuanced classification, leading to well-established objective diagnostic criteria and the development of specific surrogate ancillary tests targeting these genetic aberrations (e.g., immunohistochemistry). Ironically, the same research also has revealed that some specific tumor subtypes may be the result of differing and often multiple gene fusions/translocations, but, more interestingly, identical gene fusions may be present in more than one phenotypically and biologically distinct neoplasm, sometimes with entirely different clinical behavior. Prime examples include, EWSR1::ATF1 and, less commonly, EWSR1::CREB1 gene fusions present in both clear cell sarcoma, a malignant high-grade tumor with melanocytic differentiation, and angiomatoid fibrous histiocytoma, a mesenchymal neoplasm of intermediate malignancy with a generally indolent course. Similarly, MDM2 amplification, once deemed to be pathognomonic for atypical lipomatous tumor/well differentiated and dedifferentiated liposarcoma, has been documented in a range of additional distinct tumors, including low grade osteosarcomas (e.g. low grade central and surface parosteal) and high-grade intimal sarcomas, amongst others. Such findings reinforce the importance of careful attention to morphological and clinicoradiological features and correlation with molecular testing before rendering a specific diagnosis. Future classification systems in BST neoplasms cannot be solely based on molecular events and ideally will balance morphologic features with molecular analysis. Herein, we provide a narrative literature review of the more common BST neoplasms with shared genetic events but differing demographics, morphology, immunophenotype, and clinical behavior, re-emphasizing the importance of the hematoxylin and eosin slide and the "eye" of the practicing pathologist.
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Affiliation(s)
- Nooshin K Dashti
- Department of Pathology and Laboratory Medicine Dartmouth Health, Lebanon, 03766, NH, USA; Geisel School of Medicine at Dartmouth, Lebanon, 03766, NH, USA
| | - Casey P Schukow
- Corewell Health's Beaumont Hospital, Department of Pathology, Royal Oak, MI, 48073, USA
| | - Scott E Kilpatrick
- Department of Pathology & Laboratory Medicine, Cleveland Clinic, L25, 9500 Euclid Ave, Cleveland, OH, 44195, USA.
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Denu RA, Joseph CP, Urquiola ES, Byrd PS, Yang RK, Ratan R, Zarzour MA, Conley AP, Araujo DM, Ravi V, Nassif Haddad EF, Nakazawa MS, Patel S, Wang WL, Lazar AJ, Somaiah N. Utility of Clinical Next Generation Sequencing Tests in KIT/PDGFRA/SDH Wild-Type Gastrointestinal Stromal Tumors. Cancers (Basel) 2024; 16:1707. [PMID: 38730662 PMCID: PMC11083047 DOI: 10.3390/cancers16091707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/18/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Objective: The vast majority of gastrointestinal stromal tumors (GISTs) are driven by activating mutations in KIT, PDGFRA, or components of the succinate dehydrogenase (SDH) complex (SDHA, SDHB, SDHC, and SDHD genes). A small fraction of GISTs lack alterations in KIT, PDGFRA, and SDH. We aimed to further characterize the clinical and genomic characteristics of these so-called "triple-negative" GISTs. Methods: We extracted clinical and genomic data from patients seen at MD Anderson Cancer Center with a diagnosis of GIST and available clinical next generation sequencing data to identify "triple-negative" patients. Results: Of the 20 patients identified, 11 (55.0%) had gastric, 8 (40.0%) had small intestinal, and 1 (5.0%) had rectal primary sites. In total, 18 patients (90.0%) eventually developed recurrent or metastatic disease, and 8 of these presented with de novo metastatic disease. For the 13 patients with evaluable response to imatinib (e.g., neoadjuvant treatment or for recurrent/metastatic disease), the median PFS with imatinib was 4.4 months (range 0.5-191.8 months). Outcomes varied widely, as some patients rapidly developed progressive disease while others had more indolent disease. Regarding potential genomic drivers, four patients were found to have alterations in the RAS/RAF/MAPK pathway: two with a BRAF V600E mutation and two with NF1 loss-of-function (LOF) mutations (one deletion and one splice site mutation). In addition, we identified two with TP53 LOF mutations, one with NTRK3 fusion (ETV6-NTRK3), one with PTEN deletion, one with FGFR1 gain-of-function (GOF) mutation (K654E), one with CHEK2 LOF mutation (T367fs*), one with Aurora kinase A fusion (AURKA-CSTF1), and one with FANCA deletion. Patients had better responses with molecularly targeted therapies than with imatinib. Conclusions: Triple-negative GISTs comprise a diverse cohort with different driver mutations. Compared to KIT/PDGFRA-mutant GIST, limited benefit was observed with imatinib in triple-negative GIST. In depth molecular profiling can be helpful in identifying driver mutations and guiding therapy.
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Affiliation(s)
- Ryan A. Denu
- Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Cissimol P. Joseph
- Department of Sarcoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Elizabeth S. Urquiola
- Department of Sarcoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Precious S. Byrd
- Department of Sarcoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Richard K. Yang
- Department of Pathology, Division of Pathology & Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ravin Ratan
- Department of Sarcoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Maria Alejandra Zarzour
- Department of Sarcoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Anthony P. Conley
- Department of Sarcoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Dejka M. Araujo
- Department of Sarcoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Vinod Ravi
- Department of Sarcoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Elise F. Nassif Haddad
- Department of Sarcoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Michael S. Nakazawa
- Department of Sarcoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Shreyaskumar Patel
- Department of Sarcoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Wei-Lien Wang
- Department of Pathology, Division of Pathology & Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Alexander J. Lazar
- Department of Pathology, Division of Pathology & Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Neeta Somaiah
- Department of Sarcoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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Machado I, Claramunt-Alonso R, Lavernia J, Romero I, Barrios M, Safont MJ, Santonja N, Navarro L, López-Guerrero JA, Llombart-Bosch A. ETV6::NTRK3 Fusion-Positive Wild-Type Gastrointestinal Stromal Tumor (GIST) with Abundant Lymphoid Infiltration (TILs and Tertiary Lymphoid Structures): A Report on a New Case with Therapeutic Implications and a Literature Review. Int J Mol Sci 2024; 25:3707. [PMID: 38612518 PMCID: PMC11011305 DOI: 10.3390/ijms25073707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 03/23/2024] [Accepted: 03/24/2024] [Indexed: 04/14/2024] Open
Abstract
Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract, with proto-oncogene, receptor tyrosine kinase (c-kit), or PDGFRα mutations detected in around 85% of cases. GISTs without c-kit or platelet-derived growth factor receptor alpha (PDGFRα) mutations are considered wild-type (WT), and their diverse molecular alterations and biological behaviors remain uncertain. They are usually not sensitive to tyrosine kinase inhibitors (TKIs). Recently, some molecular alterations, including neurotrophic tyrosine receptor kinase (NTRK) fusions, have been reported in very few cases of WT GISTs. This novel finding opens the window for the use of tropomyosin receptor kinase (TRK) inhibitor therapy in these subtypes of GIST. Herein, we report a new case of NTRK-fused WT high-risk GIST in a female patient with a large pelvic mass (large dimension of 20 cm). The tumor was removed, and the histopathology displayed spindle-predominant morphology with focal epithelioid areas, myxoid stromal tissue, and notable lymphoid infiltration with tertiary lymphoid structures. Ten mitoses were quantified in 50 high-power fields without nuclear pleomorphism. DOG1 showed strong and diffuse positivity, and CD117 showed moderate positivity. Succinate dehydrogenase subunit B (SDHB) was retained, Pan-TRK was focal positive (nuclear pattern), and the proliferation index Ki-67 was 7%. Next-generation sequencing (NGS) detected an ETV6::NTRK3 fusion, and this finding was confirmed by fluorescence in situ hybridization (FISH), which showed NTRK3 rearrangement. In addition, an RB1 mutation was found by NGS. The follow-up CT scan revealed peritoneal nodules suggestive of peritoneal dissemination, and Entrectinib (a TRK inhibitor) was administered. After 3 months of follow-up, a new CT scan showed a complete response. Based on our results and the cases from the literature, GISTs with NTRK fusions are very uncommon so far; hence, further screening studies, including more WT GIST cases, may increase the possibility of finding additional cases. The present case may offer new insights into the potential introduction of TRK inhibitors as treatments for GISTs with NTRK fusions. Additionally, the presence of abundant lymphoid infiltration in the present case may prompt further research into immunotherapy as a possible additional therapeutic option.
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Affiliation(s)
- Isidro Machado
- Pathology Department, Instituto Valenciano de Oncología, Calle Gregorio Gea 31, 4to Piso, 46009 Valencia, Spain
- Patologika Laboratory, Hospital Quiron-Salud, 46010 Valencia, Spain
- Pathology Department, University of Valencia and CIBERONC, 46009 Valencia, Spain;
| | - Reyes Claramunt-Alonso
- Molecular Biology Unit, Instituto Valenciano de Oncología, 46009 Valencia, Spain; (R.C.-A.); (J.A.L.-G.)
| | - Javier Lavernia
- Oncology Unit, Instituto Valenciano de Oncología, 46009 Valencia, Spain; (J.L.); (I.R.)
| | - Ignacio Romero
- Oncology Unit, Instituto Valenciano de Oncología, 46009 Valencia, Spain; (J.L.); (I.R.)
| | - María Barrios
- Radiology Department, Instituto Valenciano de Oncología, 46009 Valencia, Spain;
| | - María José Safont
- Oncology Unit, Hospital General de Valencia, University of Valencia and CIBERONC, 46009 Valencia, Spain;
| | - Nuria Santonja
- Pathology Department, Hospital General de Valencia, 46009 Valencia, Spain; (N.S.); (L.N.)
| | - Lara Navarro
- Pathology Department, Hospital General de Valencia, 46009 Valencia, Spain; (N.S.); (L.N.)
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5
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Sasa K, Son R, Oguchi A, Ashizawa K, Hasegawa N, Kubota D, Suehara Y, Takagi T, Okubo T, Akaike K, Sugimoto K, Takahashi M, Sakamoto K, Hashimoto T, Mine S, Fukunaga T, Ishijima M, Hayashi T, Yao T, Murakawa Y, Saito T. NTRK2 expression in gastrointestinal stromal tumors with a special emphasis on the clinicopathological and prognostic impacts. Sci Rep 2024; 14:768. [PMID: 38191907 PMCID: PMC10774370 DOI: 10.1038/s41598-024-51211-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 01/02/2024] [Indexed: 01/10/2024] Open
Abstract
Gastrointestinal stromal tumors (GISTs) are typically characterized by activating mutations of the KIT proto-oncogene receptor tyrosine kinase (KIT) or platelet-derived growth factor receptor alpha (PDGFRA). Recently, the neurotrophic tyrosine receptor kinase (NTRK) fusion was reported in a small subset of wild-type GIST. We examined trk IHC and NTRK gene expressions in GIST. Pan-trk immunohistochemistry (IHC) was positive in 25 (all 16 duodenal and 9 out of 16 small intestinal GISTs) of 139 cases, and all pan-trk positive cases showed diffuse and strong expression of c-kit. Interestingly, all of these cases showed only trkB but not trkA/trkC expression. Cap analysis of gene expression (CAGE) analysis identified increased number of genes whose promoters were activated in pan-trk/trkB positive GISTs. Imbalanced expression of NTRK2, which suggests the presence of NTRK2 fusion, was not observed in any of trkB positive GISTs, despite higher mRNA expression. TrkB expression was found in duodenal GISTs and more than half of small intestinal GISTs, and this subset of cases showed poor prognosis. However, there was not clear difference in clinical outcomes according to the trkB expression status in small intestinal GISTs. These findings may provide a possible hypothesis for trkB overexpression contributing to the tumorigenesis and aggressive clinical outcome in GISTs of duodenal origin.
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Affiliation(s)
- Keita Sasa
- Department of Human Pathology, Juntendo University School of Medicine, Tokyo, Japan
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University School of Medicine, Tokyo, Japan
| | - Raku Son
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Akiko Oguchi
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Karin Ashizawa
- Department of Human Pathology, Juntendo University School of Medicine, Tokyo, Japan
| | - Nobuhiko Hasegawa
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University School of Medicine, Tokyo, Japan
| | - Daisuke Kubota
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University School of Medicine, Tokyo, Japan
| | - Yoshiyuki Suehara
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University School of Medicine, Tokyo, Japan
| | - Tatsuya Takagi
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University School of Medicine, Tokyo, Japan
| | - Taketo Okubo
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University School of Medicine, Tokyo, Japan
| | - Keisuke Akaike
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University School of Medicine, Tokyo, Japan
- Department of Orthopaedic Surgery, Yamanashi Central Hospital, Yamanashi, Japan
| | - Kiichi Sugimoto
- Department of Coloproctological Surgery, Graduate School of Medicine, Juntendo University, Tokyo, 113-8421, Japan
| | - Makoto Takahashi
- Department of Coloproctological Surgery, Graduate School of Medicine, Juntendo University, Tokyo, 113-8421, Japan
| | - Kazuhiro Sakamoto
- Department of Coloproctological Surgery, Graduate School of Medicine, Juntendo University, Tokyo, 113-8421, Japan
| | - Takashi Hashimoto
- Department of Upper Gastroenterological Surgery, Juntendo University Hospital, Bunkyo-ku, Tokyo, 113-8431, Japan
| | - Shinji Mine
- Department of Upper Gastroenterological Surgery, Juntendo University Hospital, Bunkyo-ku, Tokyo, 113-8431, Japan
| | - Tetsu Fukunaga
- Department of Upper Gastroenterological Surgery, Juntendo University Hospital, Bunkyo-ku, Tokyo, 113-8431, Japan
| | - Muneaki Ishijima
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University School of Medicine, Tokyo, Japan
- Intractable Disease Research Center, Graduate School of Medicine, Juntendo University, Tokyo, 113-8421, Japan
| | - Takuo Hayashi
- Department of Human Pathology, Juntendo University School of Medicine, Tokyo, Japan
| | - Takashi Yao
- Department of Human Pathology, Juntendo University School of Medicine, Tokyo, Japan
| | - Yasuhiro Murakawa
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
- Institute for the Advanced Study of Human Biology (ASHBi), Kyoto University, Kyoto, Japan
- IFOM ETS - the AIRC Institute of Molecular Oncology, Milan, Italy
| | - Tsuyoshi Saito
- Department of Human Pathology, Juntendo University School of Medicine, Tokyo, Japan.
- Intractable Disease Research Center, Graduate School of Medicine, Juntendo University, Tokyo, 113-8421, Japan.
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Fan Y, Zhang B, Du X, Wang B, Yan Q, Guo L, Yao W. Regulating Tumorigenicity and Cancer Metastasis through TRKA Signaling. Curr Cancer Drug Targets 2024; 24:271-287. [PMID: 37670705 DOI: 10.2174/1568009623666230904150957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 07/15/2023] [Accepted: 07/25/2023] [Indexed: 09/07/2023]
Abstract
Tropomyosin receptor kinase (TRK) A, TRKA, is a specific binding receptor of nerve growth factor (NGF), which plays an essential role in the occurrence and progression of human cancers. TRKA overexpression has been proven to be a powerful carcinogenic driver and has been verified in many tumors. The TRKA receptor kinase domain is over-activated in an NGF-dependent manner, accompanied by activation of downstream signal pathways, such as RAS-MAPK, PI3K-AKT, JAK2-STAT3 pathway, PLC γ pathway, and Hippo pathway, which participate in tumor cell proliferation, invasion, epithelial-mesenchymal transition (EMT), perineural invasion (PNI), drug resistance, and cancer pain. In addition, chimeric oncogenes produced by the fusion of NTRK1 and other genes are also the direct cause of tumorigenesis and cancer development. The newly developed TRK inhibitors can improve symptoms and tumor regression in cancer patients with overexpression of TRKA or NTRK1 fusion gene. With the emergence of drug resistance, next generation of TRK inhibitors can still maintain strong clinical efficacy in the case of TRK kinase domain mutations, and these inhibitors are in clinical trials. This review summarizes the characteristics and research progress of TRKA, focusing on the regulatory role of the TRKA signal pathway in different tumors. In addition, we have summarized the clinical significance of TRKA and the TRK inhibitors. This review may provide a new reference for the study of the mechanism of TRKA in different tumors, and also provide a new perspective for the in-depth understanding of the role of TRKA as a biomarker and therapeutic target in human cancer.
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Affiliation(s)
- Yichao Fan
- Henan Cancer Hospital, Department of Bone and Soft Tissue Cancer, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
| | - Boya Zhang
- Henan Cancer Hospital, Department of Bone and Soft Tissue Cancer, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
| | - Xinhui Du
- Henan Cancer Hospital, Department of Bone and Soft Tissue Cancer, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
| | - Bangmin Wang
- Henan Cancer Hospital, Department of Bone and Soft Tissue Cancer, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
| | - Qiang Yan
- Henan Cancer Hospital, Department of Bone and Soft Tissue Cancer, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
| | - Liangyu Guo
- Henan Cancer Hospital, Department of Bone and Soft Tissue Cancer, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
| | - Weitao Yao
- Henan Cancer Hospital, Department of Bone and Soft Tissue Cancer, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
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George S, Heinrich MC, Somaiah N, Oppelt P, McLeod R, Nishioka S, Kundu MG, Qian X, Kumar P, Laadem A, Lau Y, Tran BP, Fallon M, Dosunmu O, Shi J, Naito Y. A Phase I, Multicenter, Open-Label, First-in-Human Study of DS-6157a in Patients with Advanced Gastrointestinal Stromal Tumor. Clin Cancer Res 2023; 29:3659-3667. [PMID: 37363962 PMCID: PMC10502450 DOI: 10.1158/1078-0432.ccr-23-0640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/05/2023] [Accepted: 06/20/2023] [Indexed: 06/28/2023]
Abstract
PURPOSE To evaluate DS-6157a, an antibody-drug conjugate targeting G protein-coupled receptor 20 (GPR20), in gastrointestinal stromal tumors (GIST). PATIENTS AND METHODS In this phase I multicenter, open-label, multiple-dose study, patients with previously treated advanced GIST received intravenous DS-6157a on Day 1 of 21-day cycles, with a starting dose of 1.6 mg/kg. The primary objective evaluated the safety and tolerability of DS-6157a, while determining dose-limiting toxicity (DLT) and the MTD. Secondary objectives included plasma pharmacokinetics parameters, plasma antidrug antibodies (ADA), and efficacy. RESULTS A total of 34 patients enrolled. DS-6157a was well tolerated, with DLTs in 4 patients (11.8%) at doses of 6.4 mg/kg, 9.6 mg/kg, and 12.8 mg/kg; the MTD was determined to be 6.4 mg/kg. Treatment-emergent adverse events (TEAE) grade ≥3 occurred in 17 patients (50.0%), including decreased platelet count (23.5%), anemia (20.6%), decreased neutrophil count (14.7%), and decreased white blood cell count (11.8%). Four patients (11.8%) experienced serious adverse events related to DS-6157a. Six patients died with 5 due to disease progression and 1 due to DS-6157a-related TEAE. Tumor shrinkage was observed in 7 patients (20.6%), and 1 patient (2.9%) achieved a partial response. Plasma concentrations and exposure of intact DS-6157a, DXd, and total anti-GPR20 antibody all demonstrated a dose-dependent profile. No treatment-emergent ADAs were observed. CONCLUSIONS Targeting GPR20 with DS-6157a was tolerated in patients with advanced GIST with tumor shrinkage demonstrated in KIT/PDGFRA wild-type GIST. However, the study did not proceed further due to lower efficacy outcomes than anticipated.
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Affiliation(s)
- Suzanne George
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Michael C. Heinrich
- Division of Hematology and Medical Oncology, Portland VA Health Care System and OHSU Knight Cancer Institute, Oregon Health & Science University School of Medicine, Portland, Oregon
| | - Neeta Somaiah
- Department of Sarcoma Medical Oncology, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Peter Oppelt
- Department of Medicine, Oncology Division, Section of Medical Oncology, Washington University School of Medicine, St. Louis, Missouri
| | | | | | | | | | | | | | - Yvonne Lau
- Daiichi Sankyo, Inc., Basking Ridge, New Jersey
| | | | | | - Ololade Dosunmu
- Medical & Clinical Science, Sarah Cannon Research Institute, Nashville, Tennessee
| | - Julia Shi
- Sarah Cannon Development Innovations, Nashville, Tennessee
| | - Yoichi Naito
- Department of General Internal Medicine/Developmental Therapeutics/Medical Oncology, National Cancer Center Hospital East, Kashiwa, Japan
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Lopes David BB, Nazareth Aguiar Junior P, Costa e Silva M, Dienstmann R, Gil Ferreira C, Serrano C. Cost Evaluation Analysis of Genetic Testing and Tailored Adjuvant Imatinib in Patients With Resected High-Risk GI Stromal Tumors: The Brazilian Perspective. JCO Glob Oncol 2023; 9:e2300070. [PMID: 37856732 PMCID: PMC10664859 DOI: 10.1200/go.23.00070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 07/31/2023] [Accepted: 08/25/2023] [Indexed: 10/21/2023] Open
Abstract
PURPOSE Mutations of the KIT gene are the molecular hallmark of most GI stromal tumors (GISTs). Imatinib has revolutionized GIST treatment. Adjuvant imatinib for 3 years is the standard of care for high-risk resected GIST. However, the GIST molecular biologic profile has found different responses to this approach. Despite this, genetic testing at diagnosis is not a routine and empirical adjuvant imatinib remains the rule. Barriers to genetic profiling include concerns about the cost and utility of testing. This analysis aims to determine whether targeted genetic testing reduces costs as an ancillary tool for a limited-resource scenario instead of adjuvant empirical imatinib in patients with resected high-risk GIST. METHODS The cost evaluation analysis of molecular testing for GIST was based on the Cost of Preventing an Event (COPE), considering the Number Needed to Treat and the costs of each test compared with the cost of 3-year empirical adjuvant imatinib and real treatment costs (median number of cycles) from the public and private Brazilian Healthcare System's perspective. The analysis compared the costs of the molecular tests (broad next-generation sequencing [NGS], GS Infinity DNA/RNA assay, and targeted NGS: GS Focus GIST and the Fleury GIST Tumor DNA sequencing panel), costs of drug acquisition, considering discounts (imatinib mesylate and Glivec), and the costs of supportive care. RESULTS In both scenarios, public and private, regardless of the use of imatinib or Glivec, tailoring adjuvant treatment reduced costs, irrespective of the number of cycles. The only exception was the combination of the broad NGS test and imatinib in the Public Healthcare System. CONCLUSION The molecularly tailored adjuvant imatinib reduced costs considering the COPE of available NGS tests for both the public and private Brazilian health care systems.
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Affiliation(s)
- Bruna Bianca Lopes David
- Grupo Oncoclinicas, São Paulo, Brazil
- Division of Clinical Research and Technological Development, Brazilian National Cancer Institute, Rio de Janeiro, Brazil
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Mullen D, Vajpeyi R, Capo-Chichi JM, Nowak K, Wong N, Chetty R. Gastrointestinal Stromal Tumours (GISTs) with KRAS Mutation: A Rare but Important Subset of GISTs. Case Rep Gastrointest Med 2023; 2023:4248128. [PMID: 37663588 PMCID: PMC10471449 DOI: 10.1155/2023/4248128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 09/27/2022] [Accepted: 07/10/2023] [Indexed: 09/05/2023] Open
Abstract
Gastrointestinal stromal tumours (GISTs) are the most common mesenchymal tumours of the GI tract, usually found in the stomach, jejunum, and ileum. Typically, they are KIT or PDGFR-mutated, allowing for targetable treatments with tyrosine kinase inhibitors such as imatinib. Here, we present two KRAS-mutated wild-type gastrointestinal tumours (GISTs). Both cases occurred in the small bowel of females. Immunohistochemical studies on both tumours showed KIT and DOG-1 positivity, with SDHB retained. Molecular analysis revealed a KRAS G12D mutation and a KRAS G13D mutation, respectively. Wild-type GISTs are extremely uncommon. They typically occur in the stomach or the small bowel. KRAS is one of the genes implicated in this subset of GIST, with KRAS G12D being the most frequently encountered mutation. GIST KRAS mutations can arise alone or in conjunction with KIT, PDFRA, or BRAF mutations. Identification of these rare molecular subtypes is clinically important due to their resistance to imatinib therapy.
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Affiliation(s)
- Dorinda Mullen
- Division of Anatomical Pathology, Laboratory Medicine Program, University Health Network, University of Toronto, Toronto, Canada
| | - Rajkumar Vajpeyi
- Division of Anatomical Pathology, Laboratory Medicine Program, University Health Network, University of Toronto, Toronto, Canada
| | - Jose-Mario Capo-Chichi
- Department of Clinical Laboratory Genetics, Laboratory Medicine Program, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Klaudia Nowak
- Division of Anatomical Pathology, Laboratory Medicine Program, University Health Network, University of Toronto, Toronto, Canada
| | - Newton Wong
- Department of Cellular Pathology, Southmead Hospital, Bristol, UK
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10
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Kinnunen M, Liu X, Niemelä E, Öhman T, Gawriyski L, Salokas K, Keskitalo S, Varjosalo M. The Impact of ETV6-NTRK3 Oncogenic Gene Fusions on Molecular and Signaling Pathway Alterations. Cancers (Basel) 2023; 15:4246. [PMID: 37686522 PMCID: PMC10486691 DOI: 10.3390/cancers15174246] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/10/2023] [Accepted: 08/17/2023] [Indexed: 09/10/2023] Open
Abstract
Chromosomal translocations creating fusion genes are common cancer drivers. The oncogenic ETV6-NTRK3 (EN) gene fusion joins the sterile alpha domain of the ETV6 transcription factor with the tyrosine kinase domain of the neurotrophin-3 receptor NTRK3. Four EN variants with alternating break points have since been detected in a wide range of human cancers. To provide molecular level insight into EN oncogenesis, we employed a proximity labeling mass spectrometry approach to define the molecular context of the fusions. We identify in total 237 high-confidence interactors, which link EN fusions to several key signaling pathways, including ERBB, insulin and JAK/STAT. We then assessed the effects of EN variants on these pathways, and showed that the pan NTRK inhibitor Selitrectinib (LOXO-195) inhibits the oncogenic activity of EN2, the most common variant. This systems-level analysis defines the molecular framework in which EN oncofusions operate to promote cancer and provides some mechanisms for therapeutics.
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Affiliation(s)
- Matias Kinnunen
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland
- Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland
| | - Xiaonan Liu
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland
- Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland
| | - Elina Niemelä
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland
- Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland
| | - Tiina Öhman
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland
- Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland
| | - Lisa Gawriyski
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland
- Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland
| | - Kari Salokas
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland
- Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland
| | - Salla Keskitalo
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland
- Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland
| | - Markku Varjosalo
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland
- Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland
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11
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Wu H, Ding P, Wu J, Sun C, Guo H, Chen S, Lowe S, Yang P, Tian Y, Liu Y, Zhao Q. A New Online Dynamic Nomogram: Construction and Validation of a Predictive Model for Distant Metastasis Risk and Prognosis in Patients with Gastrointestinal Stromal Tumors. J Gastrointest Surg 2023; 27:1429-1444. [PMID: 37231240 DOI: 10.1007/s11605-023-05706-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 04/28/2023] [Indexed: 05/27/2023]
Abstract
BACKGROUND Gastrointestinal stromal tumor (GIST) is the most common sarcoma of the digestive tract, among which patients with distant metastases tend to have a poor prognosis. This study aimed to develop a model for predicting distant metastasis in GIST patients and to develop two models for monitoring overall survival (OS) and cancer-specific survival (CSS) in GIST patients with metastasis. This would allow us to develop an optimal, individualized treatment strategy. METHODS We reviewed demographic and clinicopathological characteristics data from 2010 to 2017 of patients diagnosed with GIST in the Surveillance, Epidemiology, and End Results (SEER) database. The data of the external validation group was reviewed from the Forth Hospital of Hebei Medical University. Univariate and multivariate logistic regression analyses were used to confirm the independent risk factors for distant metastasis in the GIST patients, and univariate and multivariate Cox regression analyses were performed to identify the independent prognostic factors for OS and CSS in the GIST patients with distant metastasis. Subsequently, three web-based novel nomograms were developed, which were evaluated by the receiver operating characteristic (ROC) curves, calibration curves, and decision curve analysis (DCA). RESULTS Of the 3639 patients who met the inclusion criteria, 418 (11.4%) had distant metastases. The risk factors for distant metastasis in GIST patients included sex, primary site, grade, N stage, tumor size, and mitotic count. For OS, the independent prognosis factors for GIST patients with metastasis included age, race, marital, primary site, chemotherapy, mitotic count, and metastasis at the lung, and for CSS, age, race, marital, primary site, and metastasis at the lung were the independent prognosis factors. Three web-based nomograms were constructed based on these independent factors, respectively. The ROC curves, calibration curves, and DCA were performed in the training, testing, and validation sets which confirmed the high accuracy and strong clinical practice power for the nomograms. CONCLUSION Population-based nomograms can help clinicians predict the occurrence and prognosis of distant metastases in patients with GIST, which may be helpful for clinicians to formulate clinical management and appropriate treatment strategies.
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Affiliation(s)
- Haotian Wu
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric Cancer, Shijiazhuang, 050011, China
| | - Ping'an Ding
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric Cancer, Shijiazhuang, 050011, China
| | - Jiaxiang Wu
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric Cancer, Shijiazhuang, 050011, China
| | - Chenyu Sun
- AMITA Health Saint Joseph Hospital Chicago, 2900 N. Lake Shore Drive, Chicago, IL, 60657, USA
| | - Honghai Guo
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric Cancer, Shijiazhuang, 050011, China
| | - Shuya Chen
- Newham University Hospital, Glen Road, Plaistow, E13 8SL, London, UK
| | - Scott Lowe
- College of Osteopathic Medicine, Kansas City University, 1750 Independence Ave, Kansas City, MO, 64106, USA
| | - Peigang Yang
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric Cancer, Shijiazhuang, 050011, China
| | - Yuan Tian
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric Cancer, Shijiazhuang, 050011, China
| | - Yang Liu
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric Cancer, Shijiazhuang, 050011, China
| | - Qun Zhao
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China.
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric Cancer, Shijiazhuang, 050011, China.
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12
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Nguyen MA, Colebatch AJ, Van Beek D, Tierney G, Gupta R, Cooper WA. NTRK fusions in solid tumours: what every pathologist needs to know. Pathology 2023:S0031-3025(23)00128-9. [PMID: 37330338 DOI: 10.1016/j.pathol.2023.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 04/30/2023] [Accepted: 05/03/2023] [Indexed: 06/19/2023]
Abstract
Fusions involving the Neurotrophic tropomyosin receptor kinase (NTRK) gene family (NTRK1, NTRK2 and NTRK3) are targetable oncogenic alterations that are found in a diverse range of tumours. There is an increasing demand to identify tumours which harbour these fusions to enable treatment with selective tyrosine kinase inhibitors such as larotrectinib and entrectinib. NTRK fusions occur in a wide range of tumours including rare tumours such as infantile fibrosarcoma and secretory carcinomas of the salivary gland and breast, as well as at low frequencies in more common tumours including melanoma, colorectal, thyroid and lung carcinomas. Identifying NTRK fusions is a challenging task given the different genetic mechanisms underlying NTRK fusions, their varying frequency across different tumour types, complicated by other factors such as tissue availability, optimal detection methods, accessibility and costs of testing methods. Pathologists play a key role in navigating through these complexities by determining optimal approaches to NTRK testing which has important therapeutic and prognostic implications. This review provides an overview of tumours harbouring NTRK fusions, the importance of identifying these fusions, available testing methods including advantages and limitations, and generalised and tumour-specific approaches to testing.
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Affiliation(s)
- Minh Anh Nguyen
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Andrew J Colebatch
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia; Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Diana Van Beek
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Geraldine Tierney
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Ruta Gupta
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia; Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Wendy A Cooper
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia; Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia; School of Medicine, Western Sydney University, Sydney, NSW, Australia.
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13
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Naito Y, Mishima S, Akagi K, Hayashi N, Hirasawa A, Hishiki T, Igarashi A, Ikeda M, Kadowaki S, Kajiyama H, Kato M, Kenmotsu H, Kodera Y, Komine K, Koyama T, Maeda O, Miyachi M, Nishihara H, Nishiyama H, Ohga S, Okamoto W, Oki E, Ono S, Sanada M, Sekine I, Takano T, Tao K, Terashima K, Tsuchihara K, Yatabe Y, Yoshino T, Baba E. Japanese Society of Medical Oncology/Japan Society of Clinical Oncology/Japanese Society of Pediatric Hematology/Oncology-led clinical recommendations on the diagnosis and use of tropomyosin receptor kinase inhibitors in adult and pediatric patients with neurotrophic receptor tyrosine kinase fusion-positive advanced solid tumors. Int J Clin Oncol 2023:10.1007/s10147-023-02345-7. [PMID: 37212982 DOI: 10.1007/s10147-023-02345-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 04/13/2023] [Indexed: 05/23/2023]
Abstract
BACKGROUND Clinical trials have reported the efficacy of tropomyosin receptor kinase (TRK) inhibitors against neurotrophic receptor tyrosine kinase (NTRK) fusion gene-positive advanced solid tumors. The accumulated evidence of tumor-agnostic agent has made since TRK inhibitors were approved and used in clinical practice. Therefore, we have revised the 'Japan Society of Clinical Oncology (JSCO)/Japanese Society of Medical Oncology (JSMO)-led clinical recommendations on the diagnosis and use of tropomyosin receptor kinase inhibitors in adult and pediatric patients with neurotrophic receptor tyrosine kinase fusion-positive advanced solid tumors, cooperated by the Japanese Society of Pediatric Hematology/Oncology (JSPHO)'. METHODS Clinical questions regarding medical care were formulated for patients with NTRK fusion-positive advanced solid tumors. Relevant publications were searched by PubMed and Cochrane Database. Critical publications and conference reports were added manually. Systematic reviews were performed for each clinical question for the purpose of developing clinical recommendations. The committee members identified by JSCO, JSMO, and JSPHO voted to determine the level of each recommendation considering the strength of evidence, expected risks and benefits to patients, and other related factors. Thereafter, a peer review by experts nominated from JSCO, JSMO, and JSPHO, and the public comments among all societies' members was done. RESULTS The current guideline describes 3 clinical questions and 14 recommendations for whom, when, and how NTRK fusion should be tested, and what is recommended for patients with NTRK fusion-positive advanced solid tumors. CONCLUSION The committee proposed 14 recommendations for performing NTRK testing properly to select patients who are likely to benefit from TRK inhibitors.
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Affiliation(s)
- Yoichi Naito
- National Cancer Center Hospital East, Kashiwa, Japan
| | - Saori Mishima
- National Cancer Center Hospital East, Kashiwa, Japan
| | | | - Naomi Hayashi
- The Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan
| | | | | | - Ataru Igarashi
- Yokohama City University School of Medicine, Yokohama, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Eiji Oki
- Kyushu University, Fukuoka, Japan
| | | | - Masashi Sanada
- National Hospital Organization Nagoya Medical Center, Aichi, Japan
| | | | | | - Kayoko Tao
- National Cancer Center Hospital, Tokyo, Japan
| | - Keita Terashima
- National Center for Child Health and Development, Tokyo, Japan
| | | | | | | | - Eishi Baba
- Department of Oncology and Social Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
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14
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Mechahougui H, Michael M, Friedlaender A. Precision Oncology in Gastrointestinal Stromal Tumors. Curr Oncol 2023; 30:4648-4662. [PMID: 37232809 DOI: 10.3390/curroncol30050351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 04/18/2023] [Accepted: 04/25/2023] [Indexed: 05/27/2023] Open
Abstract
GIST (gastrointestinal stromal tumors) represent 20% of sarcomatous tumors and 1-2% of primary gastrointestinal cancers. They have an excellent prognosis when localized and resectable, though their prognosis is poor in the metastatic setting, with limited options after the second line until recently. Four lines are now standard in KIT-mutated GIST and one in PDGFRA-mutated GIST. An exponential growth of new treatments is expected in this era of molecular diagnostic techniques and systematic sequencing. Currently, the main challenge remains the emergence of resistance linked to secondary mutations caused by selective pressure induced by TKIs. Repeating biopsies to tailor treatments might be a step in the right direction, and liquid biopsies at progression may offer a non-invasive alternative. New molecules with wider KIT inhibition are under investigation and could change the catalog and the sequence of existing treatments. Combination therapies may also be an approach to overcome current resistance mechanisms. Here, we review the current epidemiology and biology of GIST and discuss future management options, with an emphasis on genome-oriented therapies.
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Affiliation(s)
- Hiba Mechahougui
- Oncology Department, Geneva University Hospital, 1205 Geneva, Switzerland
| | | | - Alex Friedlaender
- Oncology Department, Geneva University Hospital, 1205 Geneva, Switzerland
- Clinique Générale Beaulieu, 1206 Geneva, Switzerland
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15
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Yin L, Shi C, He X, Qiu Y, Chen H, Chen M, Zhang Z, Chen Y, Zhou Y, Zhang H. NTRK-rearranged spindle cell neoplasms: a clinicopathological and molecular study of 13 cases with peculiar characteristics at one of the largest institutions in China. Pathology 2023; 55:362-374. [PMID: 36641377 DOI: 10.1016/j.pathol.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 08/20/2022] [Accepted: 10/09/2022] [Indexed: 12/24/2022]
Abstract
NTRK-rearranged spindle cell neoplasms (NTRK-RSCNs) represent an emerging group of rare tumours defined using molecular means. To the best of our knowledge, there have been no large series of reports about this tumour in the Chinese population in English full-text articles. Herein, we present 13 NTRK-RSCNs with peculiar characteristics. Ten of the 13 (77%) patients were children without sex differences. The tumour locations included six trunks, four extremities, two recta, and one small bowel. The histological morphology included four lipofibromatosis-like neural tumour (LPF-NT)-like, eight malignant peripheral nerve sheath tumours (MPNST)/fibrosarcoma-like, and one extremely rare myxofibrosarcoma-like pattern. Immunohistochemically, all cases were CD34, pan-TRK and TRK-A positive, SOX-10 negative, and H3K27me3 intact. S-100 protein expression was identified in 11 of 13 (85%) cases. Genetically, NTRK1 rearrangements were considered positive (7/13, 54%) or suspicious for positivity (6/13, 46%) by fluorescence in situ hybridisation. Next-generation sequencing and Sanger sequencing confirmed NTRK1 fusions with a variety of partner genes, including five LMNA, three TPM3, one SQSTM1, three novel CPSF6, IGR (downstream PMVK), and GAS2L1 genes. Interestingly, the last tumour concurrently harboured a second EWSR1-PBX1 fusion, which has never been reported. Four patients developed local recurrence and two of them suffered metastasis. In our study, NTRK-RSCNs had peculiar fusions that displayed unusual or complicated clinicopathological features. Histological clues and IHC helped streamline a small subset of potential candidates. Although FISH is a powerful technology for identifying NTRK rearrangements, RNA-/DNA-based NGS is recommended for highly suspected cases in which FISH signal patterns are not discernible as classic positive patterns, particularly if targeted therapy is considered.
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Affiliation(s)
- Lijuan Yin
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Changle Shi
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xin He
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yan Qiu
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Huijiao Chen
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Min Chen
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Zhang Zhang
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yihua Chen
- Department of Pathology, Chengdu Military General Hospital, Chengdu, Sichuan, China
| | - Yanyan Zhou
- Laboratory of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Hongying Zhang
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
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16
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Kojima N, Mori T, Motoi T, Kobayashi E, Yoshida M, Yatabe Y, Ichikawa H, Kawai A, Yonemori K, Antonescu CR, Yoshida A. Frequent CD30 Expression in an Emerging Group of Mesenchymal Tumors With NTRK, BRAF, RAF1, or RET Fusions. Mod Pathol 2023; 36:100083. [PMID: 36788089 PMCID: PMC10373933 DOI: 10.1016/j.modpat.2022.100083] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 01/12/2023]
Abstract
Neurotrophic tyrosine receptor kinase (NTRK) fusions define infantile fibrosarcomas in young children and NTRK-rearranged spindle-cell tumors in older children and adults, which share characteristic spindle-cell histology and CD34 or S100 protein expression. Similar phenotypes were identified in tumors with BRAF, RAF1, or RET fusions, suggesting a unifying concept of "spindle-cell tumors with kinase gene fusions." In this study, we investigated CD30 expression in 38 mesenchymal tumors with kinase gene fusions using immunohistochemistry. CD30 was expressed in 15 of 22 NTRK-rearranged tumors and 12 of 16 tumors with BRAF, RAF1, or RET fusions. In total, CD30 was expressed in 27 of the 38 tumors (71%), with >50% CD30-positive cells in 21 tumors and predominantly moderate or strong staining in 24 tumors. CD34 and S100 protein were also expressed in 71% and 69% of the tumors, respectively. In contrast, CD30 was significantly less frequently expressed in other mesenchymal tumor types that histologically mimic kinase fusion-positive tumors (9 of 150 tumors, 6%), of which none showed >50% or predominantly strong staining. Among these mimicking tumors, malignant peripheral nerve sheath tumors occasionally (30%) expressed CD30, albeit in a weak focal manner in most positive cases. CD30 was also expressed in 3 of 15 separately analyzed ALK- or ROS1-positive inflammatory myofibroblastic tumors. Frequent expression of CD30 enhances the shared phenotype of spindle-cell tumors with NTRK and other kinase gene fusions, and its sensitivity seems similar to that of CD34 and S100 protein. Although moderate sensitivity hampers its use as a screening tool, CD30 expression could be valuable to rapidly identify high-yield candidates for molecular workup, particularly in communities that lack routine genetic analysis and/or for tumors with BRAF, RAF1, or RET fusions.
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Affiliation(s)
- Naoki Kojima
- Department of Diagnostic Pathology, National Cancer Center Hospital, Tokyo, Japan
| | - Taisuke Mori
- Department of Diagnostic Pathology, National Cancer Center Hospital, Tokyo, Japan; Division of Molecular Pathology, National Cancer Center Research Institute, Tokyo, Japan
| | - Toru Motoi
- Department of Pathology, Komagome Hospital, Tokyo, Japan
| | - Eisuke Kobayashi
- Department of Musculoskeletal Oncology, National Cancer Center Hospital, Tokyo, Japan; Rare Cancer Center, National Cancer Center Hospital, Tokyo, Japan
| | - Masayuki Yoshida
- Department of Diagnostic Pathology, National Cancer Center Hospital, Tokyo, Japan
| | - Yasushi Yatabe
- Department of Diagnostic Pathology, National Cancer Center Hospital, Tokyo, Japan; Division of Molecular Pathology, National Cancer Center Research Institute, Tokyo, Japan
| | - Hitoshi Ichikawa
- Department of Clinical Genomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Akira Kawai
- Department of Musculoskeletal Oncology, National Cancer Center Hospital, Tokyo, Japan; Rare Cancer Center, National Cancer Center Hospital, Tokyo, Japan
| | - Kan Yonemori
- Rare Cancer Center, National Cancer Center Hospital, Tokyo, Japan; Department of Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Cristina R Antonescu
- Department of Pathology, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Akihiko Yoshida
- Department of Diagnostic Pathology, National Cancer Center Hospital, Tokyo, Japan; Rare Cancer Center, National Cancer Center Hospital, Tokyo, Japan.
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Catalano F, Cremante M, Dalmasso B, Pirrone C, Lagodin D’Amato A, Grassi M, Comandini D. Molecular Tailored Therapeutic Options for Advanced Gastrointestinal Stromal Tumors (GISTs): Current Practice and Future Perspectives. Cancers (Basel) 2023; 15:cancers15072074. [PMID: 37046734 PMCID: PMC10093725 DOI: 10.3390/cancers15072074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/23/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
Gastrointestinal stromal tumors (GISTs) are one of the most common mesenchymal tumors characterized by different molecular alterations that lead to specific clinical presentations and behaviors. In the last twenty years, thanks to the discovery of these mutations, several new treatment options have emerged. This review provides an extensive overview of GISTs’ molecular pathways and their respective tailored therapeutic strategies. Furthermore, current treatment strategies under investigation and future perspectives are analyzed and discussed.
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Affiliation(s)
- Fabio Catalano
- Medical Oncology Unit 1, IRCCS Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Malvina Cremante
- Medical Oncology Unit 1, IRCCS Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Bruna Dalmasso
- Genetica dei Tumori Rari, IRCCS Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Chiara Pirrone
- Medical Oncology Unit 1, IRCCS Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | | | - Massimiliano Grassi
- Medical Oncology Unit 1, IRCCS Ospedale Policlinico San Martino, 16132 Genoa, Italy
- Correspondence:
| | - Danila Comandini
- Medical Oncology Unit 1, IRCCS Ospedale Policlinico San Martino, 16132 Genoa, Italy
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18
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Masucci MT, Motti ML, Minopoli M, Di Carluccio G, Carriero MV. Emerging Targeted Therapeutic Strategies to Overcome Imatinib Resistance of Gastrointestinal Stromal Tumors. Int J Mol Sci 2023; 24:ijms24076026. [PMID: 37046997 PMCID: PMC10094678 DOI: 10.3390/ijms24076026] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/17/2023] [Accepted: 03/19/2023] [Indexed: 04/14/2023] Open
Abstract
Gastrointestinal stromal tumors (GISTs) are the most common malignant mesenchymal neoplasms of the gastrointestinal tract. The gold standard for the diagnosis of GISTs is morphologic analysis with an immunohistochemical evaluation plus genomic profiling to assess the mutational status of lesions. The majority of GISTs are driven by gain-of-function mutations in the proto-oncogene c-KIT encoding the tyrosine kinase receptor (TKR) known as KIT and in the platelet-derived growth factor-alpha receptor (PDGFRA) genes. Approved therapeutics are orally available as tyrosine kinase inhibitors (TKIs) targeting KIT and/or PDGFRA oncogenic activation. Among these, imatinib has changed the management of patients with unresectable or metastatic GISTs, improving their survival time and delaying disease progression. Nevertheless, the majority of patients with GISTs experience disease progression after 2-3 years of imatinib therapy due to the development of secondary KIT mutations. Today, based on the identification of new driving oncogenic mutations, targeted therapy and precision medicine are regarded as the new frontiers for GISTs. This article reviews the most important mutations in GISTs and highlights their importance in the current understanding and treatment options of GISTs, with an emphasis on the most recent clinical trials.
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Affiliation(s)
- Maria Teresa Masucci
- Preclinical Models of Tumor Progression Unit, Istituto Nazionale Tumori IRCCS 'Fondazione G. Pascale', 80131 Naples, Italy
| | - Maria Letizia Motti
- Preclinical Models of Tumor Progression Unit, Istituto Nazionale Tumori IRCCS 'Fondazione G. Pascale', 80131 Naples, Italy
- Department of Movement Sciences and Wellbeing, University "Parthenope", 80133 Naples, Italy
| | - Michele Minopoli
- Preclinical Models of Tumor Progression Unit, Istituto Nazionale Tumori IRCCS 'Fondazione G. Pascale', 80131 Naples, Italy
| | - Gioconda Di Carluccio
- Preclinical Models of Tumor Progression Unit, Istituto Nazionale Tumori IRCCS 'Fondazione G. Pascale', 80131 Naples, Italy
| | - Maria Vincenza Carriero
- Preclinical Models of Tumor Progression Unit, Istituto Nazionale Tumori IRCCS 'Fondazione G. Pascale', 80131 Naples, Italy
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19
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Molecular Mechanisms of Gastrointestinal Stromal Tumors and Their Impact on Systemic Therapy Decision. Cancers (Basel) 2023; 15:cancers15051498. [PMID: 36900287 PMCID: PMC10001062 DOI: 10.3390/cancers15051498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/23/2023] [Accepted: 02/24/2023] [Indexed: 03/08/2023] Open
Abstract
Gastrointestinal stromal tumors (GISTs) are soft tissue sarcomas that mostly derive from Cajal cell precursors. They are by far the most common soft tissue sarcomas. Clinically, they present as gastrointestinal malignancies, most often with bleeding, pain, or intestinal obstruction. They are identified using characteristic immunohistochemical staining for CD117 and DOG1. Improved understanding of the molecular biology of these tumors and identification of oncogenic drivers have altered the systemic treatment of primarily disseminated disease, which is becoming increasingly complex. Gain-of-function mutations in KIT or PDGFRA genes represent the driving mutations in more than 90% of all GISTs. These patients exhibit good responses to targeted therapy with tyrosine kinase inhibitors (TKIs). Gastrointestinal stromal tumors lacking the KIT/PDGFRA mutations, however, represent distinct clinico-pathological entities with diverse molecular mechanisms of oncogenesis. In these patients, therapy with TKIs is hardly ever as effective as for KIT/PDGFRA-mutated GISTs. This review provides an outline of current diagnostics aimed at identifying clinically relevant driver alterations and a comprehensive summary of current treatments with targeted therapies for patients with GISTs in both adjuvant and metastatic settings. The role of molecular testing and the selection of the optimal targeted therapy according to the identified oncogenic driver are reviewed and some future directions are proposed.
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20
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Khosroyani HM, Klug LR, Heinrich MC. TKI Treatment Sequencing in Advanced Gastrointestinal Stromal Tumors. Drugs 2023; 83:55-73. [PMID: 36607590 PMCID: PMC10029090 DOI: 10.1007/s40265-022-01820-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/23/2022] [Indexed: 01/07/2023]
Abstract
Prior to the early 2000s, patients with advanced gastrointestinal stromal tumors (GIST) had very poor prognoses owing to a lack of effective therapies. The development of tyrosine kinase inhibitors at the turn of the century significantly improved the overall survival for patients with GIST. The resounding success of imatinib in the first clinical trial of a tyrosine kinase inhibitor to treat GIST led to its approval for first-line therapy for advanced GIST; this study was open to all comers and not restricted to any GIST subtype(s). The trials that led to the approvals of second-, third-, and fourth-line therapy for advanced GIST were also open to all patients with advanced/metastatic GIST. Only in retrospect do we realize the role that the molecular subtypes played in the results observed in these studies. In this review, we discuss the studies that led to the US Food and Drug Administration approval of imatinib (first line), sunitinib (second line), regorafenib (third line), and ripretinib (fourth line) for advanced KIT-mutant GIST. In addition, we review how information about GIST molecular subtypes has been used to accelerate the approval of other targeted therapies for non-KIT mutant GIST, leading to the approval of five additional drugs indicated for the treatment of specific GIST molecular subtypes. We also discuss how our understanding of the molecular subtypes will play a role in the next generation of therapeutic approaches for treating advanced GIST.
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Affiliation(s)
- Homma M Khosroyani
- Portland VA Health Care System and Knight Cancer Institute, Oregon Health & Science University, R&D-19, 3710 SW US Veterans Hospital Road, Portland, OR, 97239, USA
| | - Lillian R Klug
- Portland VA Health Care System and Knight Cancer Institute, Oregon Health & Science University, R&D-19, 3710 SW US Veterans Hospital Road, Portland, OR, 97239, USA
| | - Michael C Heinrich
- Portland VA Health Care System and Knight Cancer Institute, Oregon Health & Science University, R&D-19, 3710 SW US Veterans Hospital Road, Portland, OR, 97239, USA.
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21
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Cao Z, Li J, Sun L, Xu Z, Ke Y, Shao B, Guo Y, Sun Y. GISTs with NTRK Gene Fusions: A Clinicopathological, Immunophenotypic, and Molecular Study. Cancers (Basel) 2022; 15:cancers15010105. [PMID: 36612101 PMCID: PMC9817796 DOI: 10.3390/cancers15010105] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/16/2022] [Accepted: 12/19/2022] [Indexed: 12/28/2022] Open
Abstract
The most common mutations in gastrointestinal stromal tumors (GISTs) are KIT or PDGFRA mutations. Recently, neurotrophic tyrosine receptor kinase (NTRK) fusions have been reported in WT GISTs, which increased interest in introducing tropomyosin receptor kinase (TRK) inhibitors as treatments for GISTs with NTRK fusions. Hence, we aimed to screen NTRK fusions in WT GISTs; we used fluorescence in situ hybridization (FISH), next-generation sequencing (NGS), and immunohistochemistry (IHC) to screen NTRK fusions in 46 WT GISTs and evaluate each method. We further reviewed NTRK fusion-positive GISTs from the literature and performed clinical and pathological analyses; two GISTs with an ETV6-NTRK3 fusion (5%) were identified, while only one (50%) was positive for Pan-TRK expression. On the other hand, among the six GISTs with Pan-TRK-positive expression, only one (17%) harbored NTRK fusion. The literature review revealed the strong consistency between FISH and NGS and the limited value of Pan-TRK IHC in screening NTRK fusions in GISTs. In addition, the clinical and pathological analysis showed that GISTs with NTRK rearrangement occurred less frequently in the stomach, were more frequently larger in size, and the epithelioid type presented with a higher risk of recurrence. The NTRK3 fusion has been more common than the NTRK1 fusion in GISTs to date; our study identified two ETV6-NTRK3 fusions in 46 WT GISTs. Compared with FISH and IHC, NGS is preferred for screening WT GISTs, including NTRK rearrangements. However, since GISTs with NTRK fusions are rare, further studies including more samples and mechanistic investigations should be conducted in the future.
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Affiliation(s)
- Zi Cao
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin’s Clinical Research Center for Cancer, Tianjin 300202, China
| | - Jiaxin Li
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin’s Clinical Research Center for Cancer, Tianjin 300202, China
| | - Lin Sun
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin’s Clinical Research Center for Cancer, Tianjin 300202, China
| | - Zanmei Xu
- Shanghai OrigiMed Co., Ltd., Shanghai 201112, China
| | - Yan Ke
- Shanghai OrigiMed Co., Ltd., Shanghai 201112, China
| | - Bing Shao
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin’s Clinical Research Center for Cancer, Tianjin 300202, China
| | - Yuhong Guo
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin’s Clinical Research Center for Cancer, Tianjin 300202, China
| | - Yan Sun
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin’s Clinical Research Center for Cancer, Tianjin 300202, China
- Correspondence: ; Tel.: +86-22-2334-0123
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22
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von Mehren M, Kane JM, Riedel RF, Sicklick JK, Pollack SM, Agulnik M, Bui MM, Carr-Ascher J, Choy E, Connelly M, Dry S, Ganjoo KN, Gonzalez RJ, Holder A, Homsi J, Keedy V, Kelly CM, Kim E, Liebner D, McCarter M, McGarry SV, Mesko NW, Meyer C, Pappo AS, Parkes AM, Petersen IA, Poppe M, Schuetze S, Shabason J, Spraker MB, Zimel M, Bergman MA, Sundar H, Hang LE. NCCN Guidelines® Insights: Gastrointestinal Stromal Tumors, Version 2.2022. J Natl Compr Canc Netw 2022; 20:1204-1214. [PMID: 36351335 PMCID: PMC10245542 DOI: 10.6004/jnccn.2022.0058] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Gastrointestinal stromal tumors (GIST) are the most common type of soft tissue sarcoma that occur throughout the gastrointestinal tract. Most of these tumors are caused by oncogenic activating mutations in the KIT or PDGFRA genes. The NCCN Guidelines for GIST provide recommendations for the diagnosis, evaluation, treatment, and follow-up of patients with these tumors. These NCCN Guidelines Insights summarize the panel discussion behind recent important updates to the guidelines, including revised systemic therapy options for unresectable, progressive, or metastatic GIST based on mutational status, and updated recommendations for the management of GIST that develop resistance to specific tyrosine kinase inhibitors.
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Affiliation(s)
| | | | | | | | - Seth M Pollack
- 5Robert H. Lurie Comprehensive Cancer Center of Northwestern University
| | | | | | | | - Edwin Choy
- 9Massachusetts General Hospital Cancer Center
| | - Mary Connelly
- 10The Ohio State University Comprehensive Cancer Center - James Cancer Hospital and Solove Research Institute
| | - Sarah Dry
- 11UCLA Jonsson Comprehensive Cancer Center
| | | | | | | | - Jade Homsi
- 14UT Southwestern Simmons Comprehensive Cancer Center
| | | | | | | | - David Liebner
- 10The Ohio State University Comprehensive Cancer Center - James Cancer Hospital and Solove Research Institute
| | | | | | - Nathan W Mesko
- 20Case Comprehensive Cancer Center/University Hospitals Seidman Cancer Center and Cleveland Clinic Taussig Cancer Institute
| | - Christian Meyer
- 21The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
| | - Alberto S Pappo
- 22St. Jude Children's Research Hospital/University of Tennessee Health Science Center
| | | | | | - Matthew Poppe
- 25Huntsman Cancer Institute at the University of Utah
| | | | - Jacob Shabason
- 27Abramson Cancer Center at the University of Pennsylvania
| | - Matthew B Spraker
- 28Siteman Cancer Center at Barnes-Jewish Hospital and Washington University School of Medicine
| | - Melissa Zimel
- 29UCSF Helen Diller Family Comprehensive Cancer Center; and
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23
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Rahim S, Alkhaldi SS, Alasousi K, Ali RH. Intestinal LMNA::NTRK1-fused spindle cell neoplasm with S100 and CD34 coexpression: a new case. BMJ Case Rep 2022; 15:15/11/e251270. [DOI: 10.1136/bcr-2022-251270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Recurrent fusions involving neurotrophin tyrosine receptor kinase (NTRK) genes have been increasingly recognised in spindle cell tumours of somatic soft tissues due to the widespread use of RNA-based sequencing techniques. This heterogeneous group of neoplasms is included as an emerging entity in the currentWHO Classification of Soft Tissue and Bone Tumors. A subset of these tumours, associated with NTRK1 fusions, displays a distinctive phenotype in the form of monomorphic cytomorphology, patternless arrangement, perivascular and stromal hyalinisation, and CD34+/S100+/SOX10− immunoprofile. Gastrointestinal tract counterparts have been recently described with emphasis on distinction fromKIT/PDGFRA/BRAF/RASwild-type gastrointestinal stromal tumours (GIST). Here, we present a recently encountered intestinal spindle cell neoplasm harbouring anLMNA::NTRK1gene fusion in a woman in her early 20s, which was initially thought to represent a GIST or a solitary fibrous tumour. Awareness of this emerging tumour type in the gastrointestinal tract is important due to treatment implications.
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24
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Xiong Z, Wu S, Li FJ, Luo C, Jin QY, Connolly ID, Hayden Gephart M, You L. Elevated ETV6 Expression in Glioma Promotes an Aggressive In Vitro Phenotype Associated with Shorter Patient Survival. Genes (Basel) 2022; 13:genes13101882. [PMID: 36292767 PMCID: PMC9656946 DOI: 10.3390/genes13101882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/12/2022] [Accepted: 10/14/2022] [Indexed: 11/29/2022] Open
Abstract
Background: GBM astrocytes may adopt fetal astrocyte transcriptomic signatures involved in brain development and migration programs to facilitate diffuse tumor infiltration. Our previous data show that ETS variant 6 (ETV6) is highly expressed in human GBM and fetal astrocytes compared to normal mature astrocytes. We hypothesized that ETV6 played a role in GBM tumor progression. Methods: Expression of ETV6 was first examined in two American and three Chinese tissue microarrays. The correlation between ETV6 staining intensity and patient survival was calculated, followed by validation using public databases—TCGA and REMBRANDT. The effect of ETV6 knockdown on glioma cell proliferation (EdU), viability (AnnexinV labeling), clonogenic growth (colony formation), and migration/invasion (transwell assays) in GBM cells was tested. RNA sequencing and Western blot were performed to elucidate the underlying molecular mechanisms. Results: ETV6 was highly expressed in GBM and associated with an unfavorable prognosis. ETV6 silencing in glioma cells led to increased apoptosis or decreased proliferation, clonogenicity, migration, and invasion. RNA-Seq-based gene expression and pathway analyses revealed that ETV6 knockdown in U251 cells led to the upregulation of genes involved in extracellular matrix organization, NF-κB signaling, TNF-mediated signaling, and the downregulation of genes in the regulation of cell motility, cell proliferation, PI3K-AKT signaling, and the Ras pathway. The downregulation of the PI3K-AKT and Ras-MAPK pathways were further validated by immunoblotting. Conclusion: Our findings suggested that ETV6 was highly expressed in GBM and its high expression correlated with poor survival. ETV6 silencing decreased an aggressive in vitro phenotype probably via the PI3K-AKT and Ras-MAPK pathways. The study encourages further investigation of ETV6 as a potential therapeutic target of GBM.
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Affiliation(s)
- Zhang Xiong
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai 200040, China
- Neurosurgical Institute, Fudan University, Shanghai 200040, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai 200040, China
- Shanghai Key Laboratory of Brain Function and Restoration and Neural Regeneration, Shanghai 200040, China
| | - Shuai Wu
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai 200040, China
- Neurosurgical Institute, Fudan University, Shanghai 200040, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai 200040, China
- Shanghai Key Laboratory of Brain Function and Restoration and Neural Regeneration, Shanghai 200040, China
| | - Feng-jiao Li
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Chen Luo
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai 200040, China
- Neurosurgical Institute, Fudan University, Shanghai 200040, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai 200040, China
- Shanghai Key Laboratory of Brain Function and Restoration and Neural Regeneration, Shanghai 200040, China
| | - Qiu-yan Jin
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Ian David Connolly
- Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, CA 94305, USA
| | - Melanie Hayden Gephart
- Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, CA 94305, USA
- Correspondence: to: (M.H.G.); (L.Y.)
| | - Linya You
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
- Key Laboratory of Medical Imaging Computing and Computer Assisted Intervention of Shanghai, Shanghai 200032, China
- Correspondence: to: (M.H.G.); (L.Y.)
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25
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Unk M, Bombač A, Jezeršek Novaković B, Stegel V, Šetrajčič Dragoš V, Blatnik O, Klančar G, Novaković S. Correlation of treatment outcome in sanger/RT‑qPCR KIT/PDGFRA wild‑type metastatic gastrointestinal stromal tumors with next‑generation sequencing results: A single‑center report. Oncol Rep 2022; 48:167. [PMID: 35904169 PMCID: PMC9351002 DOI: 10.3892/or.2022.8382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 07/19/2022] [Indexed: 11/29/2022] Open
Abstract
In patients with gastrointestinal stromal tumors (GIST), it has become mandatory to determine the driver mutation in order to predict the response to standard treatment with tyrosine kinase inhibitors (TKI). A total of 10–15% of all GIST lack activating mutations in KIT proto-oncogene, receptor tyrosine kinase (KIT)/platelet-derived growth factor receptor alpha (PDGFRA) and have been classified as KIT/PDGFRA wild-type (WT) GIST. They are characterized by poor response to TKI. From a group of 119 metastatic GIST patients, 17 patients with KIT/PDGFRA/BRAF WT GIST as determined by reverse transcription-quantitative (RT-q) PCR and Sanger sequencing were profiled by a targeted next-generation sequencing (NGS) approach and their treatment outcome was assessed. In the present study, 41.2% of patients as KIT/PDGFRA/BRAF WT GIST examined with RT-qPCR and Sanger sequencing were confirmed to be carriers of pathogenic KIT/PDGFRA mutations by NGS and were responsive to TKI. The percentage of genuinely KIT/PDGFRA WT GIST in the present study thereby dropped from the initial 14.3% detected with the RT-qPCR and Sanger sequencing to 7.6% after NGS. Their outcome was universally poor. The reliability of RT-qPCR and direct Sanger sequencing results in this setting is therefore insufficient and it is recommended that NGS becomes a requirement for treatment decision at least in KIT/PDGFRA/BRAF WT GIST as determined by RT-qPCR and Sanger sequencing.
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Affiliation(s)
- Mojca Unk
- Faculty of Medicine, University of Ljubljana, SI‑1000 Ljubljana, Slovenia
| | - Alenka Bombač
- Department of Molecular Diagnostics, Institute of Oncology Ljubljana, SI‑1000 Ljubljana, Slovenia
| | | | - Vida Stegel
- Department of Molecular Diagnostics, Institute of Oncology Ljubljana, SI‑1000 Ljubljana, Slovenia
| | - Vita Šetrajčič Dragoš
- Department of Molecular Diagnostics, Institute of Oncology Ljubljana, SI‑1000 Ljubljana, Slovenia
| | - Olga Blatnik
- Department of Pathology, Institute of Oncology Ljubljana, SI‑1000 Ljubljana, Slovenia
| | - Gašper Klančar
- Department of Molecular Diagnostics, Institute of Oncology Ljubljana, SI‑1000 Ljubljana, Slovenia
| | - Srdjan Novaković
- Faculty of Medicine, University of Ljubljana, SI‑1000 Ljubljana, Slovenia
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26
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Huang WK, Wu CE, Wang SY, Chang CF, Chou WC, Chen JS, Yeh CN. Systemic Therapy for Gastrointestinal Stromal Tumor: Current Standards and Emerging Challenges. Curr Treat Options Oncol 2022; 23:1303-1319. [PMID: 35976553 PMCID: PMC9402763 DOI: 10.1007/s11864-022-00996-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/08/2022] [Indexed: 11/27/2022]
Abstract
Gastrointestinal stromal tumor (GIST), though rare, is the most common mesenchymal tumors of the gastrointestinal tract. KIT or PDGFRα mutation plays as an oncogenic driver in the majority of GISTs. Surgical resection is the only curative treatment for localized disease. The discovery of imatinib with promising anti-tumor effect and successive tyrosine kinase inhibitors (TKI), including second-line sunitinib and third-line regorafenib, revolutionized the management of advanced and metastatic GIST over the past two decades. Recently, ripretinib and avapritinib were approved for the fourth line setting and for PDGFRA exon 18-mutant GIST in first-line setting, respectively. Despite multi-line TKIs exerted ability of disease control, drug resistance remained an obstacle for preventing rapid disease progression. Experimental TKIs or novel therapeutic targets may further improve treatment efficacy. Immune checkpoint inhibitors such as anti-programmed cell death protein-1 (PD1) and anti-CTL-associated antigen 4 (CTLA-4) showed moderate response in early phase trials composed of heavily pretreated patients. KIT/PDGFRα wild-type GISTs are generally less sensitive to imatinib and late-line TKIs. Recent studies demonstrated that targeting fibroblast growth factor receptor signaling may be a potential target for the wild-type GISTs.
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Affiliation(s)
- Wen-Kuan Huang
- Division of Hematology-Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chiao-En Wu
- Division of Hematology-Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Shang-Yu Wang
- College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Surgery and GIST team, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Ching-Fu Chang
- Division of Hematology-Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Wen-Chi Chou
- Division of Hematology-Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Jen-Shi Chen
- Division of Hematology-Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chun-Nan Yeh
- College of Medicine, Chang Gung University, Taoyuan, Taiwan. .,Department of Surgery and GIST team, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.
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27
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Adult NTRK-rearranged spindle cell neoplasms of the viscera: with an emphasis on rare locations and heterologous elements. Mod Pathol 2022; 35:911-921. [PMID: 35149769 DOI: 10.1038/s41379-021-01005-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/16/2021] [Accepted: 12/16/2021] [Indexed: 12/16/2022]
Abstract
NTRK-rearranged mesenchymal neoplasms mostly affect the soft tissues of pediatric patients. Given the responsiveness to selective NTRK inhibitors, it remains critical to identify those ultra-rare cases occurring in the viscera of adults. In five females and two males aged 18-53 years, we characterized visceral mesenchymal tumors harboring TPM3-NTRK1 [uterine cervix (N = 2), pleura, prostate], LMNA-NTRK1 (lung), SQSTM1-NTRK3 (heart), and NTRK3 rearrangement with unknown fusion partner (colon/mesocolon) with RNA sequencing, FISH, RT-PCR, and immunohistochemistry. The tumors exhibited spindled to ovoid/epithelioid or pleomorphic cells, often arranged in fascicles, and were low-to-intermediate-grade and high-grade in three and four cases, respectively. Keloid-like stromal collagen and perivascular hyalinization was noted in five. Adenosarcoma-like appearances were observed in two, manifesting frond-like protrusions in one cervical tumor and phyllodes-like architecture in the prostatic tumor. Abrupt high-grade transformation into pleomorphic liposarcoma was found in another cervical tumor, while the pleural tumor contained intermixed rhabdomyoblasts. Pan-TRK immunostaining was positive in all cases. All cases expressed CD34, while five were S100-positive. CDKN2A homozygous deletion with concomitant p16 loss occurred in 4/7. Whole-exome sequencing identified TP53 mutation (c.672+2T>C, involving a splice site, with concomitant protein loss) in a cervical sarcoma, limited to its heterologous liposarcomatous component. At least moderate pan-TRK immunoreactivity was present in varying proportions of potential pathologic mimics, with BCOR-positive sarcoma (56%, 5/9), undifferentiated uterine sarcoma (50%, 3/6), and spindle cell/sclerosing rhabdomyosarcoma (33%, 2/6) being among the most frequent. This underscored the unsatisfactory specificity of pan-TRK immunohistochemistry and warranted molecular confirmation in the diagnosis of adult NTRK-rearranged visceral mesenchymal neoplasms. The current report highlights the ever-expanding clinicopathologic and genetic spectrum of this entity by describing the unprecedented cardiac and pleural locations and heterologous differentiation, as well as the second NTRK-rearranged "prostatic stromal sarcoma," while substantiating CDKN2A deletion as a frequent occurrence.
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28
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Manea CA, Badiu DC, Ploscaru IC, Zgura A, Bacinschi X, Smarandache CG, Serban D, Popescu CG, Grigorean VT, Botnarciuc V. A review of NTRK fusions in cancer. Ann Med Surg (Lond) 2022; 79:103893. [PMID: 35860155 PMCID: PMC9289232 DOI: 10.1016/j.amsu.2022.103893] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 05/25/2022] [Accepted: 05/29/2022] [Indexed: 11/25/2022] Open
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29
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Treatment of Gastrointestinal Stromal Tumors (GISTs): A Focus on Younger Patients. Cancers (Basel) 2022; 14:cancers14122831. [PMID: 35740497 PMCID: PMC9221273 DOI: 10.3390/cancers14122831] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 06/05/2022] [Accepted: 06/06/2022] [Indexed: 01/27/2023] Open
Abstract
Simple Summary Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal neoplasms of the gastrointestinal tract. GISTs mainly develop in older adults, and the median age of diagnosis is 60–65 years. The incidence of GISTs in young adult patients, defined as adults before 40, is less than 10%. The frequency and type of molecular abnormalities in this group of patients are different from those in older patients. In this publication, we focus on the specificity of GISTs in young people and the principles of therapeutic management and management of the side effects of treatment. Abstract Gastrointestinal stromal tumors (GISTs) originate from Cajal’s cells and are the most common mesenchymal neoplasms of the gastrointestinal tract. GISTs in young adults, i.e., patients before the age of 40, are rare and differ from those in older patients and GISTs in children in terms of the molecular and clinical features, including the location and type of mutations. They often harbor other molecular abnormalities than KIT and PDGFRA mutations (wild-type GISTs). The general principles of therapeutic management in young patients are the same as in the elderly. Considering some differences in molecular abnormalities, molecular testing should be the standard procedure to allow appropriate systemic therapy if needed. The optimal treatment strategy should be established by a multidisciplinary team experienced in sarcoma treatment. The impact of treatment on the quality of life and daily activities, including the impact on work, pregnancy, and fertility, in this patient population should be especially taken into consideration.
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30
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Tropomyosin-Related Kinase Fusions in Gastrointestinal Stromal Tumors. Cancers (Basel) 2022; 14:cancers14112659. [PMID: 35681640 PMCID: PMC9179593 DOI: 10.3390/cancers14112659] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 02/06/2023] Open
Abstract
Simple Summary The canonical mutations in gastrointestinal stromal tumors (GISTs) are typically activating mutations in KIT and platelet-derived growth factor receptor alpha (PDGFRA). Imatinib, the treatment of choice for GISTs, shows a lower response in KIT/PDGFRA wild-type GISTs. Neurotrophic tyrosine receptor kinase (NTRK) fusion, which can be treated with an NTRK target agent, has been reported in KIT/PDGFRA wild-type GISTs, and, therefore, the Yonsei Cancer Center analyzed NTRK fusion incidence in KIT/PDGFRA wild-type GISTs. At the Yonsei Cancer Center, NTRK fusion was confirmed in 16% of cases. Confirmation of NTRK fusion in KIT/PDGFRA wild-type GISTs provides important information for improving therapeutic outcomes. NTRK fusion was confirmed in 16% of KIT/PDGFRA wild-type GIST cases at the Yonsei Cancer Center. Confirmation of NTRK fusion in KIT/PDGFRA wild-type GISTs will improve therapeutic outcomes. Abstract The canonical mutations in gastrointestinal stromal tumors (GISTs) are typically activating mutations in KIT and platelet-derived growth factor receptor alpha (PDGFRA). GISTs with non-canonical mutations are a heterogeneous group. Here, we examined tropomyosin-related kinase (TRK) fusion in GIST cases without KIT/PDGFRA mutations (KIT/PDGFRA wild-type (WT) GISTs). We retrospectively analyzed patients who were diagnosed with GISTs at the Yonsei Cancer Center, Severance Hospital, between January 1998 and December 2016. Thirty-one patients with KIT/PDGFRA WT GISTs were included in the analysis. TRK expression in tumor samples was assessed by pan-TRK immunohistochemistry (IHC), and the neurotrophic tyrosine receptor kinase (NTRK: the gene encoding TRK) rearrangement was analyzed by fluorescence in situ hybridization (FISH). IHC analyses revealed that five cases in this cohort exhibited a weak to moderate TRK expression. NTRK1 fusions were detected in three tumor samples, and two samples harbored NTRK3 fusions. The remaining 26 samples did not harbor NTRK fusions. Two types of NTRK fusions were detected, and the overall NTRK fusion frequency in KIT/PDGFRA WT GIST cases was 16% (5/31). Our data provide insights into the molecular alterations underpinning KIT/PDGFRA WT GISTs. More effort should be devoted to improve methods to identify this distinct disease subtype within the KIT/PDGFRA WT GIST group.
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Schaefer IM, DeMatteo RP, Serrano C. The GIST of Advances in Treatment of Advanced Gastrointestinal Stromal Tumor. Am Soc Clin Oncol Educ Book 2022; 42:1-15. [PMID: 35522913 DOI: 10.1200/edbk_351231] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Gastrointestinal stromal tumor (GIST) is the most common malignant neoplasm of mesenchymal origin and a compelling clinical and biologic model for the rational development of molecularly targeted agents. This is because the majority of GISTs are driven by gain-of-function mutations in KIT or PDGFRA receptor tyrosine kinases. Specific GIST mutations circumscribe well-defined molecular subgroups that must be determined during the diagnostic work-up to guide clinical management, including therapeutic decisions. Surgery is the cornerstone treatment in localized disease and can also be clinically relevant in the metastatic setting. The correct combination and sequence of targeted agents and surgical procedures improves outcomes for patients with GIST and should be discussed individually within multidisciplinary expert teams. All currently approved agents for the treatment of GIST are based on orally available tyrosine kinase inhibitors targeting KIT and PDGFRA oncogenic activation. Although first-line imatinib achieves remarkable prolonged disease control, the benefit of subsequent lines of treatment is more modest. Novel therapeutic strategies focus on overcoming the heterogeneity of KIT or PDGFRA secondary mutations and providing more potent inhibition of specific challenging mutations. This article reviews the current understanding and treatment of GIST, with an emphasis on recent advances.
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Affiliation(s)
- Inga-Marie Schaefer
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | | | - César Serrano
- Sarcoma Translational Research Program, Vall d'Hebron Institute of Oncology, Barcelona, Spain.,Medical Oncology Department, Vall d'Hebron University Hospital, Barcelona, Spain
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Abstract
Over the past 20 years, gastrointestinal stromal tumor (GIST) has evolved into an increasingly complex clinical entity with ever more challenges. While surgical resection is the gold standard, advancements in genetic testing, therapeutic options, immunotherapy, and management of metastatic disease necessitate a comprehensive, multimodal approach for these tumors. This chapter highlights the importance of genomic testing of GIST, the use of neoadjuvant and adjuvant therapy for localized disease, surgical principles for GIST, as well as current and new approaches for addressing metastatic disease.
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Punjabi LS, Sittampalam K. Expanding the Spectrum of Adult NTRK3-Rearranged Spindle Cell Neoplasms: A Recurrent NTRK3-SQSTM1 Fusion Spindle Cell Tumor With Deceptively Bland Morphology. Am J Clin Pathol 2022; 157:485-493. [PMID: 34661642 DOI: 10.1093/ajcp/aqab167] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 08/31/2021] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVES NTRK-rearranged spindle cell neoplasms (other than infantile fibrosarcoma) are an emerging entity of tumors that demonstrate wide variation in clinical and histopathologic features. We report a case of an NTRK-rearranged spindle cell neoplasm bearing a deceptively bland morphology. METHODS We performed histopathologic, immunohistochemical, and molecular evaluation on resection tissue. We also conducted a literature review on adult NTRK3-rearranged spindle cell neoplasms. RESULTS The tumor presented as a recurrent ankle mass in an elderly patient. Histologically, it was composed of bland spindle cells set in a fibrous to edematous stroma. Blood vessels were interspersed with subtle perivascular hyalinization and scattered lymphoid aggregates. Immunohistochemically, the spindle cells expressed CD34 and S100 while being negative for SOX10. The tumor also showed cytoplasmic reactivity for pan-tyrosine receptor kinase immunohistochemistry. Next-generation sequencing identified an NTRK3-SQSTM1 fusion. To the best of our knowledge, this fusion pair has not been previously reported in adult NTRK-rearranged mesenchymal tumors. CONCLUSIONS Altogether, this rare and diagnostically challenging case of an NTRK3-rearranged spindle cell tumor with low-grade morphology is in contrast to many of the reported adult NTRK3-rearranged mesenchymal tumors. Recognition of low-grade NTRK-rearranged tumors demands close attention to clues in morphology and immunoprofiles.
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Affiliation(s)
- Lavisha S Punjabi
- Department of Anatomical Pathology, Singapore General Hospital, Singapore
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Characterization of Aberrations in DNA Damage Repair Pathways in Gastrointestinal Stromal Tumors: The Clinicopathologic Relevance of γH2AX and 53BP1 in Correlation with Heterozygous Deletions of CHEK2, BRCA2, and RB1. Cancers (Basel) 2022; 14:cancers14071787. [PMID: 35406559 PMCID: PMC8997382 DOI: 10.3390/cancers14071787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/23/2022] [Accepted: 03/28/2022] [Indexed: 02/04/2023] Open
Abstract
Genetic aberrations involving DNA damage repair (DDR) remain underexplored in gastrointestinal stromal tumors (GISTs). We characterized DDR abnormalities using targeted next-generation sequencing and multiplex ligation-dependent probe amplification, and performed immunofluorescence (IF) and immunohistochemistry (IHC) analyses of γH2AX and 53BP1. Consistent with IF-validated nuclear co-localization, γH2AX and 53BP1 showed robust correlations in expression levels, as did both biomarkers between IF and IHC. Without recurrent pathogenic single-nucleotide variants, heterozygous deletions (HetDels) frequently targeted DNA damage-sensing genes, with CHEK2-HetDel being the most prevalent. Despite their chromosomal proximity, BRCA2 and RB1 were occasionally hit by HetDels and were seldom co-deleted. HetDels of CHEK2 and BRCA2 showed a preference for older age groups, while RB1-HetDel predominated in the non-gastric, high-risk, and 53BP1-overexpressing GISTs. Higher risk levels were consistently related to γ-H2AX or 53BP1 overexpression (all p < 0.01) in two validation cohorts, while only 53BP1 overexpression was associated with the deletion of KIT exon 11 (KITex11-del) among genotyped GISTs. Low expressers of dual biomarkers were shown by univariate analysis to have longer disease-free survival (p = 0.031). However, higher risk levels, epithelioid histology, and KITex11-del retained prognostic independence. Conclusively, IHC is a useful surrogate of laborious IF in the combined assessment of 53BP1 and γ-H2AX to identify potential DDR-defective GISTs, which were frequently aberrated by HetDels and a harbinger of progression.
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Dermawan JK, Vanderbilt CM, Chang JC, Untch BR, Singer S, Chi P, Tap WD, Antonescu CR. FGFR2::TACC2 fusion as a novel KIT-independent mechanism of targeted therapy failure in a multidrug-resistant gastrointestinal stromal tumor. Genes Chromosomes Cancer 2022; 61:412-419. [PMID: 35170141 DOI: 10.1002/gcc.23030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/02/2022] [Accepted: 02/03/2022] [Indexed: 11/06/2022] Open
Abstract
Genetic alterations in FGF/FGFR pathway are infrequent in gastrointestinal stromal tumors (GIST), with rare cases of quadruple wildtype GISTs harboring FGFR1 gene fusions and mutations. Additionally, FGF/FGFR overexpression was shown to promote drug resistance to kinase inhibitors in GISTs. However, FGFR gene fusions have not been directly implicated as a mechanism of drug resistance in GISTs. Herein, we report a patient presenting with a primary small bowel spindle cell GIST and concurrent peritoneal and liver metastases displaying an imatinib-sensitive KIT exon 11 in-frame deletion. After an initial 9-month benefit to imatinib, the patient experienced intraabdominal peritoneal recurrence owing to secondary KIT exon 13 missense mutation and FGFR4 amplification. Despite several additional rounds of tyrosine kinase inhibitors (TKI), the patient's disease progressed after 2 years and presented with multiple peritoneal and liver metastases, including one pericolonic mass harboring secondary KIT exon 18 missense mutation, and a concurrent transverse colonic mass with a FGFR2::TACC2 fusion and AKT2 amplification. All tumors, including primary and recurrent masses, harbored an MGA c.7272 T > G (p.Y2424*) nonsense mutation and CDKN2A/CDKN2B/MTAP deletions. The transcolonic mass showed elevated mitotic count (18/10 HPF), as well as significant decrease in CD117 and DOG1 expression, in contrast to all the other resistant nodules that displayed diffuse and strong CD117 and DOG1 immunostaining. The FGFR2::TACC2 fusion resulted from a 742 kb intrachromosomal inversion at the chr10q26.3 locus, leading to a fusion between exons 1-17 of FGFR2 and exons 7-17 TACC2, which preserves the extracellular and protein tyrosine kinase domains of FGFR2. We present the first report of a multi-drug resistant GIST patient who developed an FGFR2 gene fusion as a secondary genetic event to the selective pressure of various TKIs. This case also highlights the heterogeneous escape mechanisms to targeted therapy across various tumor nodules, spanning from both KIT-dependent and KIT-independent off-target activation pathways.
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Affiliation(s)
- Josephine K Dermawan
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Chad M Vanderbilt
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Jason C Chang
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Brian R Untch
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Samuel Singer
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Ping Chi
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - William D Tap
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Cristina R Antonescu
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
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Agaimy A. [Mesenchymal tumors and tumor-like lesions of the gastrointestinal tract: an overview]. DER PATHOLOGE 2022; 43:31-44. [PMID: 34919183 DOI: 10.1007/s00292-021-01040-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/15/2021] [Indexed: 06/14/2023]
Abstract
Mesenchymal tumors and tumor-like lesions of the gastrointestinal (GI) tract are uncommon. They vary from reactive tumefactive lesions and benign neoplasms to highly aggressive sarcomas. Among them, GI stromal tumors (GISTs) are most common, followed, with less frequency, by smooth muscle and neurogenic tumors. The major challenge resides in correctly identifying GISTs and providing a comprehensive report (including risk assessment and genotyping) that represents the basis for an optimized surgical-oncological treatment and/or adjuvant therapy. On the other hand, the challenge of benign lesions is to find a good name (well understandable and reproducible diagnostic term) that helps avoid diagnostic ambiguity and prognostic uncertainty so that overprognostication and overtreatment can be prevented. Moreover, several recently described genetically defined benign and malignant entities need be correctly diagnosed due to their special "targeted" therapeutic options and to further characterize their clinicopathological and biological properties in the future. These recent entities include aggressive epithelioid inflammatory myofibroblastic sarcoma (ALK-RANBP2-driven), malignant gastrointestinal neuroectodermal tumor (EWSR1-ATF1/CREB-related), NTRK-rearranged neoplasms, and, most recently, colorectal NUTM1-rearranged sarcomas. This review highlights the major clinicopathological features of gastrointestinal mesenchymal lesions in light of recent developments.
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Affiliation(s)
- Abbas Agaimy
- Pathologisches Institut, Universitätsklinikum Erlangen, Krankenhausstraße 8-10, 91054, Erlangen, Deutschland.
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Wang XQ, Goytain A, Dickson BC, Nielsen TO. Advances in Sarcoma Molecular Diagnostics. Genes Chromosomes Cancer 2022; 61:332-345. [DOI: 10.1002/gcc.23025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 01/10/2022] [Accepted: 01/15/2022] [Indexed: 11/11/2022] Open
Affiliation(s)
- Xue Qi Wang
- Faculty of Medicine University of British Columbia Vancouver Canada
- Genetic Pathology Evaluation Centre, Department of Pathology and Laboratory Medicine University of British Columbia Vancouver Canada
| | - Angela Goytain
- Genetic Pathology Evaluation Centre, Department of Pathology and Laboratory Medicine University of British Columbia Vancouver Canada
| | - Brendan C. Dickson
- Department of Pathology & Laboratory Medicine, Mount Sinai Hospital; Department of Laboratory Medicine and Pathobiology University of Toronto Toronto ON Canada
| | - Torsten Owen Nielsen
- Genetic Pathology Evaluation Centre, Department of Pathology and Laboratory Medicine University of British Columbia Vancouver Canada
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Recent Advances on Immunohistochemistry and Molecular Biology for the Diagnosis of Adnexal Sweat Gland Tumors. Cancers (Basel) 2022; 14:cancers14030476. [PMID: 35158743 PMCID: PMC8833812 DOI: 10.3390/cancers14030476] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 01/27/2023] Open
Abstract
Simple Summary Cutaneous sweat gland tumors form an extremely diverse and heterogeneous group of neoplasms that show histological differentiation to the sweat apparatus. Due to their rarity, wide diagnostic range, and significant morphological overlap between entities, their accurate diagnosis remains challenging for pathologists. Until recently, little was known about the molecular pathogenesis of adnexal tumors. Recent findings have revealed a wide range of gene fusions and other oncogenic factors that can be used for diagnostic purposes and, for some, can be detected by immunohistochemistry. Among other organs containing exocrine glands, such as salivary glands, breasts, and bronchi, most of these biomarkers have been reported in homologous neoplasms that share morphological features with their cutaneous counterparts. This review aims to describe these recent molecular and immunohistochemical biomarkers in the field of sweat gland tumors. Abstract Cutaneous sweat gland tumors are a subset of adnexal neoplasms that derive or differentiate into the sweat apparatus. Their great diversity, rarity, and complex terminology make their pathological diagnosis challenging. Recent findings have revealed a wide spectrum of oncogenic drivers, several of which are of diagnostic interest for pathologists. Most of these molecular alterations are represented by gene fusions, which are shared with other homologous neoplasms occurring in organs containing exocrine glands, such as salivary and breast glands, which show similarities to the sweat apparatus. This review aims to provide a synthesis of the most recent immunohistochemical and molecular markers used for the diagnosis of sweat gland tumors and to highlight their relationship with similar tumors in other organs. It will cover adenoid cystic carcinoma (NFIB, MYB, and MYBL1 fusion), cutaneous mixed tumor (PLAG1 fusion), cylindroma and spiradenoma and their carcinomas thereof (NF-κB activation through CYLD inactivation or ALKP1 hotspot mutation), hidradenoma and hidradenocarcinoma (MAML2 fusion), myoepithelioma (EWSR1 and FUS fusion), poroma and porocarcinoma (YAP1, MAML2, and NUTM1 fusion), secretory carcinoma (ETV6, NTRK3 fusion), tubular adenoma and syringo-cystadenoma papilliferum (HRAS and BRAF activating mutations). Sweat gland tumors for which there are no known molecular abnormalities will also be briefly discussed, as well as potential future developments.
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Casali PG, Blay JY, Abecassis N, Bajpai J, Bauer S, Biagini R, Bielack S, Bonvalot S, Boukovinas I, Bovee JVMG, Boye K, Brodowicz T, Buonadonna A, De Álava E, Dei Tos AP, Del Muro XG, Dufresne A, Eriksson M, Fedenko A, Ferraresi V, Ferrari A, Frezza AM, Gasperoni S, Gelderblom H, Gouin F, Grignani G, Haas R, Hassan AB, Hindi N, Hohenberger P, Joensuu H, Jones RL, Jungels C, Jutte P, Kasper B, Kawai A, Kopeckova K, Krákorová DA, Le Cesne A, Le Grange F, Legius E, Leithner A, Lopez-Pousa A, Martin-Broto J, Merimsky O, Messiou C, Miah AB, Mir O, Montemurro M, Morosi C, Palmerini E, Pantaleo MA, Piana R, Piperno-Neumann S, Reichardt P, Rutkowski P, Safwat AA, Sangalli C, Sbaraglia M, Scheipl S, Schöffski P, Sleijfer S, Strauss D, Strauss SJ, Hall KS, Trama A, Unk M, van de Sande MAJ, van der Graaf WTA, van Houdt WJ, Frebourg T, Gronchi A, Stacchiotti S. Gastrointestinal stromal tumours: ESMO-EURACAN-GENTURIS Clinical Practice Guidelines for diagnosis, treatment and follow-up. Ann Oncol 2022; 33:20-33. [PMID: 34560242 DOI: 10.1016/j.annonc.2021.09.005] [Citation(s) in RCA: 204] [Impact Index Per Article: 102.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 09/01/2021] [Accepted: 09/04/2021] [Indexed: 02/06/2023] Open
Affiliation(s)
- P G Casali
- Department of Cancer Medicine, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy; Department of Oncology and Hemato-oncology University of Milan, Milan, Italy
| | - J Y Blay
- Centre Leon Berard and UCBL1, Lyon, France
| | - N Abecassis
- Instituto Portugues de Oncologia de Lisboa Francisco Gentil, EPE, Lisbon, Portugal
| | - J Bajpai
- Department of Medical Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - S Bauer
- Department of Medical Oncology, Interdisciplinary Sarcoma Center, West German Cancer Center, University of Duisburg-Essen, Essen, Germany
| | - R Biagini
- Department of Oncological Orthopedics, Musculoskeletal Tissue Bank, IFO, Regina Elena National Cancer Institute, Rome, Italy
| | - S Bielack
- Klinikum Stuttgart-Olgahospital, Stuttgart, Germany
| | - S Bonvalot
- Department of Surgery, Institut Curie, Paris, France
| | | | - J V M G Bovee
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - K Boye
- Department of Oncology, Oslo University Hospital, The Norwegian Radium Hospital, Oslo, Norway
| | - T Brodowicz
- Vienna General Hospital (AKH), Medizinische Universität Wien, Vienna, Austria
| | - A Buonadonna
- Centro di Riferimento Oncologico di Aviano, Aviano, Italy
| | - E De Álava
- Institute of Biomedicine of Sevilla (IBiS), Virgen del Rocio University Hospital/CSIC/University of Sevilla/CIBERONC, Seville, Spain; Department of Normal and Pathological Cytology and Histology, School of Medicine, University of Seville, Seville, Spain
| | - A P Dei Tos
- Department of Pathology, Azienda Ospedale Università Padova, Padova, Italy
| | - X G Del Muro
- Integrated Unit ICO Hospitalet, HUB, Barcelona, Spain
| | - A Dufresne
- Département d'Oncologie Médicale, Centre Leon Berard, Lyon, France
| | - M Eriksson
- Skane University Hospital-Lund, Lund, Sweden
| | - A Fedenko
- P. A. Herzen Cancer Research Institute, Moscow, Russian Federation
| | - V Ferraresi
- Sarcomas and Rare Tumors Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - A Ferrari
- Pediatric Oncology Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - A M Frezza
- Department of Cancer Medicine, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - S Gasperoni
- Department of Oncology and Robotic Surgery, Azienda Ospedaliera Universitaria Careggi, Florence, Italy
| | - H Gelderblom
- Department of Medical Oncology, Leiden University Medical Centre, Leiden, The Netherlands
| | - F Gouin
- Centre Leon-Berard Lyon, Lyon, France
| | - G Grignani
- Candiolo Cancer Institute, FPO - IRCCS, Candiolo, Italy
| | - R Haas
- Department of Radiotherapy, The Netherlands Cancer Institute, Amsterdam, The Netherlands; Department of Radiotherapy, Leiden University Medical Centre, Leiden, The Netherlands
| | - A B Hassan
- Oxford University Hospitals NHS Foundation Trust and University of Oxford, Oxford, UK
| | - N Hindi
- Department of Medical Oncology, Fundación Jimenez Diaz, University Hospital, Advanced Therapies in Sarcoma Lab, Madrid, Spain
| | - P Hohenberger
- Mannheim University Medical Center, Mannheim, Germany
| | - H Joensuu
- Helsinki University Hospital (HUH) and University of Helsinki, Helsinki, Finland
| | - R L Jones
- Sarcoma Unit, Royal Marsden Hospital and Institute of Cancer Research, London, UK
| | - C Jungels
- Medical Oncology Clinic, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium
| | - P Jutte
- University Medical Center Groningen, Groningen, The Netherlands
| | - B Kasper
- Mannheim University Medical Center, Mannheim, Germany
| | - A Kawai
- Department of Musculoskeletal Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - K Kopeckova
- University Hospital Motol, Prague, Czech Republic
| | - D A Krákorová
- Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - A Le Cesne
- Department of Cancer Medicine, Gustave Roussy, Villejuif, France
| | - F Le Grange
- Department of Oncology, University College London Hospitals NHS Foundation Trust (UCLH), London, UK
| | - E Legius
- Department for Human Genetics, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - A Leithner
- Department of Orthopaedics and Trauma, Medical University of Graz, Graz, Austria
| | - A Lopez-Pousa
- Medical Oncology Department, Hospital Universitario Santa Creu i Sant Pau, Barcelona, Spain
| | - J Martin-Broto
- Department of Medical Oncology, Fundación Jimenez Diaz, University Hospital, Advanced Therapies in Sarcoma Lab, Madrid, Spain
| | - O Merimsky
- Aviv Sourasky Medical Center (Ichilov), Tel Aviv, Israel
| | - C Messiou
- Department of Radiology, Royal Marsden Hospital and Institute of Cancer Research, London, UK
| | - A B Miah
- Department of Oncology, Royal Marsden Hospital and Institute of Cancer Research, London, UK
| | - O Mir
- Department of Ambulatory Cancer Care, Gustave Roussy, Villejuif, France
| | - M Montemurro
- Department of Oncology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | - C Morosi
- Department of Radiology, IRCCS Foundation National Cancer Institute, Milan, Italy
| | - E Palmerini
- Department of Osteoncology, Bone and Soft Tissue Sarcomas and Innovative Therapies, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - M A Pantaleo
- Division of Oncology, IRCCS Azienda Ospedaliero-Universitaria, di Bologna, Bologna, Italy
| | - R Piana
- Azienda Ospedaliero, Universitaria Città della Salute e della Scienza di Torino, Turin, Italy
| | | | - P Reichardt
- Helios Klinikum Berlin Buch, Berlin, Germany
| | - P Rutkowski
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Skłodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - A A Safwat
- Aarhus University Hospital, Aarhus, Denmark
| | - C Sangalli
- Department of Radiotherapy, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - M Sbaraglia
- Department of Pathology, Azienda Ospedale Università Padova, Padova, Italy
| | - S Scheipl
- Department of Orthopaedics and Trauma, Medical University of Graz, Graz, Austria
| | - P Schöffski
- Department of General Medical Oncology, University Hospitals Leuven, Leuven Cancer Institute, Leuven, Belgium
| | - S Sleijfer
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - D Strauss
- Department of Surgery, Royal Marsden Hospital, London, UK
| | - S J Strauss
- Department of Oncology, University College London Hospitals NHS Foundation Trust (UCLH), London, UK
| | - K Sundby Hall
- Department of Oncology, Oslo University Hospital, The Norwegian Radium Hospital, Oslo, Norway
| | - A Trama
- Department of Research, Evaluative Epidemiology Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - M Unk
- Institute of Oncology of Ljubljana, Ljubljana, Slovenia
| | - M A J van de Sande
- Department of Orthopedic Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - W T A van der Graaf
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands; Department of Medical Oncology, the Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - W J van Houdt
- Department of Surgical Oncology, the Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - T Frebourg
- Department of Genetics, Normandy Center for Genomic and Personalized Medicine, Normandie University, UNIROUEN, Inserm U1245 and Rouen University Hospital, Rouen, France
| | - A Gronchi
- Department of Surgery, Fondazione IRCCS Istituto Nazionale dei Tumori and University of Milan, Milan, Italy
| | - S Stacchiotti
- Department of Cancer Medicine, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
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Davis JL, Al‐Ibraheemi A, Rudzinski ER, Surrey LF. Mesenchymal neoplasms with NTRK and other kinase gene alterations. Histopathology 2021; 80:4-18. [DOI: 10.1111/his.14443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 06/30/2021] [Accepted: 07/01/2021] [Indexed: 12/20/2022]
Affiliation(s)
- Jessica L Davis
- Department of Pathology Oregon Health & Science University Portland OregonUSA
| | - Alyaa Al‐Ibraheemi
- Department of Pathology Boston Children’s Hospital Boston MassachusettsUSA
| | - Erin R Rudzinski
- Department of Laboratories Seattle Children’s Hospital Seattle WashingtonUSA
| | - Lea F Surrey
- Department of Pathology and Laboratory Medicine The Children’s Hospital of Philadelphia Philadelphia Pennsylvania USA
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Bubola J, MacMillan CM, Weinreb I, Witterick I, Swanson D, Zhang L, Antonescu CR, Dickson BC. A Poorly Differentiated Non-keratinizing Sinonasal Squamous Cell Carcinoma with a Novel ETV6-TNFRSF8 Fusion Gene. Head Neck Pathol 2021; 15:1284-1288. [PMID: 33394379 PMCID: PMC8633219 DOI: 10.1007/s12105-020-01249-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/05/2020] [Accepted: 11/06/2020] [Indexed: 10/22/2022]
Abstract
Squamous cell carcinoma of the sinonasal tract is relatively rare and morphologically and genetically heterogeneous. We report the case of an adult male with a left sphenoid sinus mass. A biopsy revealed an undifferentiated carcinoma composed of sheets of epithelioid cells lacking keratinization and glandular formation. The tumor was associated with a prominent lymphoplasmacytic inflammatory infiltrate. Immunohistochemical staining demonstrated diffuse expression of pankeratin and p63; it was negative for p16. In addition, EBER was also negative. Morphologically the findings raised the possibility of non-keratinizing squamous cell carcinoma. RNA sequencing was undertaken to exclude the possibility of NUT carcinoma; interestingly, this revealed a novel ETV6-TNFRSF8 fusion transcript, which was independently confirmed by fluorescence in situ hybridization. The current case is illustrative because it broadens our understanding of the molecular pathogenesis of non-keratinizing squamous cell carcinoma and adds to the diversity of ETV6-rearranged malignancies.
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Affiliation(s)
- Justin Bubola
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, ON, Canada
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada
| | - Christina M MacMillan
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Ilan Weinreb
- Department of Pathology, University Health Network, Toronto, ON, Canada
| | - Ian Witterick
- Department of Otolaryngology Head and Neck Surgery, Department of Surgical Oncology, University Health Network, Toronto, ON, Canada
| | - David Swanson
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, ON, Canada
| | - Lei Zhang
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Cristina R Antonescu
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Brendan C Dickson
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, ON, Canada.
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.
- Pathology & Laboratory Medicine, Mount Sinai Hospital, 600 University Ave, Suite 6.500.12.5, Toronto, ON, M5G 1X5, Canada.
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Dermawan JK, Rubin BP. Molecular Pathogenesis of Gastrointestinal Stromal Tumor: A Paradigm for Personalized Medicine. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2021; 17:323-344. [PMID: 34736340 DOI: 10.1146/annurev-pathol-042220-021510] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Over the past three to four decades, the molecular pathogenesis of gastrointestinal stromal tumors (GISTs) has been elucidated in great detail. In this review, we discuss the biological genesis of GISTs, identification of the various primary activating driver mutations (focusing on KIT and PDGFRA), oncogene addiction and targeted therapies with imatinib and other tyrosine kinase inhibitors, and the subsequent characterization of the various mechanisms of drug resistance. We illustrate how GIST has become a quintessential paradigm for personalized medicine. Expected final online publication date for the Annual Review of Pathology: Mechanisms of Disease, Volume 17 is January 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Josephine K Dermawan
- Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA; ,
| | - Brian P Rubin
- Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA; ,
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Surrey LF, Davis JL. NTRK-Rearranged soft tissue neoplasms: A review of evolving diagnostic entities and algorithmic detection methods. Cancer Genet 2021; 260-261:6-13. [PMID: 34794069 DOI: 10.1016/j.cancergen.2021.10.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 10/08/2021] [Accepted: 10/31/2021] [Indexed: 12/12/2022]
Abstract
The spectrum of tumors with NTRK1/2/3 rearrangements has expanded with widespread use of next generation sequencing (NGS) technology. For many years it was known that a majority of infantile fibrosarcomas (IFS), and their counterpart in the kidney, cellular congenital mesoblastic nephroma, contain the recurrent ETV6-NTRK3 fusion. Sequencing RNA transcripts from IFS and their morphologically similar counterparts in older children and adults has shown rearrangements with other 5' partners combined with NTRK1, NTRK2, and NTRK3 can also occur. For those tumors occurring outside of the infant age group, this has resulted in a proposed new diagnostic entity of "NTRK-rearranged spindle cell neoplasm." The clinical behavior of NTRK rearranged soft tissue tumors varies, though most show localized disease with rare metastases. The pathology of NTRK rearranged tumors exists on a spectrum, with overlapping features of classic infantile fibrosarcoma, lipofibromatosis, and malignant peripheral nerve sheath tumor. In this tumor spectrum, clinical and pathologic predictive factors are largely still to be determined, with no clear association between histologic grade and severity of disease. Of critical importance is detection of the NTRK rearrangement in order to guide treatment in patients with unresectable and metastatic disease. While resection is the definitive treatment, these tumors do show response to targeted TRK kinase inhibitors. Multiple detection methods are available, including immunohistochemistry, FISH, and next generation sequencing, which each have their merits and potential pitfalls. We aim to review the clinical characteristics and histomorphology of mesenchymal tumors with NTRK rearrangements as well as discuss molecular detection methods and diagnostic algorithms specific for soft tissue tumors.
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Affiliation(s)
- Lea F Surrey
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA, USA.
| | - Jessica L Davis
- Department of Pathology, Oregon Health & Science University, Portland, OR, USA
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Banerjee S, Yoon H, Ting S, Tang CM, Yebra M, Wenzel AT, Yeerna H, Mesirov JP, Wechsler-Reya RJ, Tamayo P, Sicklick JK. KIT low Cells Mediate Imatinib Resistance in Gastrointestinal Stromal Tumor. Mol Cancer Ther 2021; 20:2035-2048. [PMID: 34376580 PMCID: PMC8492542 DOI: 10.1158/1535-7163.mct-20-0973] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 04/06/2021] [Accepted: 06/30/2021] [Indexed: 11/16/2022]
Abstract
Gastrointestinal stromal tumor (GIST) is commonly driven by oncogenic KIT mutations that are effectively targeted by imatinib (IM), a tyrosine kinase inhibitor (TKI). However, IM does not cure GIST, and adjuvant therapy only delays recurrence in high-risk tumors. We hypothesized that GIST contains cells with primary IM resistance that may represent a reservoir for disease persistence. Here, we report a subpopulation of CD34+KITlow human GIST cells that have intrinsic IM resistance. These cells possess cancer stem cell-like expression profiles and behavior, including self-renewal and differentiation into CD34+KIThigh progeny that are sensitive to IM treatment. We also found that TKI treatment of GIST cell lines led to induction of stem cell-associated transcription factors (OCT4 and NANOG) and concomitant enrichment of the CD34+KITlow cell population. Using a data-driven approach, we constructed a transcriptomic-oncogenic map (Onco-GPS) based on the gene expression of 134 GIST samples to define pathway activation during GIST tumorigenesis. Tumors with low KIT expression had overexpression of cancer stem cell gene signatures consistent with our in vitro findings. Additionally, these tumors had activation of the Gas6/AXL pathway and NF-κB signaling gene signatures. We evaluated these targets in vitro and found that primary IM-resistant GIST cells were effectively targeted with either single-agent bemcentinib (AXL inhibitor) or bardoxolone (NF-κB inhibitor), as well as with either agent in combination with IM. Collectively, these findings suggest that CD34+KITlow cells represent a distinct, but targetable, subpopulation in human GIST that may represent a novel mechanism of primary TKI resistance, as well as a target for overcoming disease persistence following TKI therapy.
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Affiliation(s)
- Sudeep Banerjee
- Department of Surgery, Division of Surgical Oncology, University of California, San Diego, California
- Department of Surgery, University of California, Los Angeles, California
- Moores Cancer Center, University of California, San Diego, California
| | - Hyunho Yoon
- Department of Surgery, Division of Surgical Oncology, University of California, San Diego, California
- Moores Cancer Center, University of California, San Diego, California
- Department of Medical and Biological Sciences, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Stephanie Ting
- Moores Cancer Center, University of California, San Diego, California
- Department of Medicine, Division of Medical Genetics, University of California, San Diego, California
| | - Chih-Min Tang
- Department of Surgery, Division of Surgical Oncology, University of California, San Diego, California
- Moores Cancer Center, University of California, San Diego, California
| | - Mayra Yebra
- Department of Surgery, Division of Surgical Oncology, University of California, San Diego, California
- Moores Cancer Center, University of California, San Diego, California
| | - Alexander T Wenzel
- Moores Cancer Center, University of California, San Diego, California
- Department of Medicine, Division of Medical Genetics, University of California, San Diego, California
| | - Huwate Yeerna
- Moores Cancer Center, University of California, San Diego, California
- Department of Medicine, Division of Medical Genetics, University of California, San Diego, California
| | - Jill P Mesirov
- Moores Cancer Center, University of California, San Diego, California
- Department of Medicine, Division of Medical Genetics, University of California, San Diego, California
| | | | - Pablo Tamayo
- Moores Cancer Center, University of California, San Diego, California
- Department of Medicine, Division of Medical Genetics, University of California, San Diego, California
- UCSD Center for Novel Therapeutics, La Jolla, California
| | - Jason K Sicklick
- Department of Surgery, Division of Surgical Oncology, University of California, San Diego, California.
- Moores Cancer Center, University of California, San Diego, California
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Ratti M, Grizzi G, Passalacqua R, Lampis A, Cereatti F, Grassia R, Hahne JC. NTRK fusions in colorectal cancer: clinical meaning and future perspective. Expert Opin Ther Targets 2021; 25:677-683. [PMID: 34488530 DOI: 10.1080/14728222.2021.1978070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
INTRODUCTION Despite the efforts of the scientific community, the prognosis of metastatic colorectal cancer (mCRC) remains poor. Actionable gene fusions such as Neurotrophic Tropomyosin Receptor Kinases (NTRK) rearrangements are rare but might represent a new target to improve outcomes in this setting. The first-generation TRK inhibitors, larotrectinib and entrectinib, have demonstrated efficacy and safety in mCRC cancer patients exhibiting NTRK pathogenic fusions. Moreover, second-generation molecules are emerging, able to overcome the acquired resistance to NTRK blocking. AREAS COVERED This review aims to report the current knowledge and the available evidence on NTRK fusion in mCRC, with a focus on molecular bases, clinical characteristics, prognostic meaning, and new therapeutic approaches, from the perspective of the clinical oncologist. EXPERT OPINION Considering the limited options associated with the treatment of mCRC patients, the possibility of identifying new molecular biomarkers is an urgent clinical need. The availability of new molecular targets and the combinations of different agents might represent the true breakthrough point, allowing for change in the clinical course of colorectal cancer patients.
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Affiliation(s)
- Margherita Ratti
- Department of Medical Oncology, Azienda Socio Sanitaria Territoriale of Cremona, Cremona, Italy
| | - Giulia Grizzi
- Department of Medical Oncology, Azienda Socio Sanitaria Territoriale of Cremona, Cremona, Italy
| | - Rodolfo Passalacqua
- Department of Medical Oncology, Azienda Socio Sanitaria Territoriale of Cremona, Cremona, Italy
| | - Andrea Lampis
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - Fabrizio Cereatti
- Department of Medical Oncology, Azienda Socio Sanitaria Territoriale of Cremona, Cremona, Italy
| | - Roberto Grassia
- Department of Medical Oncology, Azienda Socio Sanitaria Territoriale of Cremona, Cremona, Italy
| | - Jens Claus Hahne
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
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Castillon M, Kammerer-Jacquet SF, Cariou M, Costa S, Conq G, Samaison L, Douet-Guilbert N, Marcorelles P, Doucet L, Uguen A. Fluorescent In Situ Hybridization Must be Preferred to pan-TRK Immunohistochemistry to Diagnose NTRK3-rearranged Gastrointestinal Stromal Tumors (GIST). Appl Immunohistochem Mol Morphol 2021; 29:626-634. [PMID: 33758144 DOI: 10.1097/pai.0000000000000933] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 02/12/2021] [Indexed: 12/30/2022]
Abstract
Tyrosine kinase inhibitors have revolutionized the treatment of patients with gastrointestinal stromal tumors (GISTs). Nevertheless, some GISTs do not contain any targetable KIT or PDGFRA mutations classically encountered in this field. Novel approved therapies targeting TRK chimeric proteins products of NTRK genes fusions consist in a promising approach to treat some patients with GISTs lacking any identified driver oncogenic mutation in KIT, PDGFRA or BRAF genes. Thus, an adequate testing strategy permitting to diagnose the rare NTRK-rearranged GISTs is required. In this work, we studied about the performances of pan-TRK immunohistochemistry (IHC) and NTRK1/2/3 fluorescent in situ hybridization in a series of 39 GISTs samples. Among 22 patients with GISTs lacking KIT or PDGFRA mutations, BRAFV600E IHC permitted to diagnose 2/22 (9%) BRAFV600E-mutated GISTs and, among the 20 KIT, PDGFRA, and BRAF wild type tumors, 1/20 (5%), NTRK3-rearranged tumor was diagnosed using NTRK3 fluorescent in situ hybridization. Pan-TRK IHC using EPR17341 and A7H6R clones was negative in this NTRK3-rearranged sample. Pan-TRK IHC was frequently positive in NTRK not rearranged tumors without (24 samples analyzed) or with (15 samples analyzed) KIT or PDGFRA mutations with major discrepancies between the 2 IHC clones (intraclass correlation coefficient of 0.3042). Given the new therapeutic opportunity offered by anti-TRK targeted therapies to treat patients with advanced cancers including GISTs, it is worth to extend molecular analysis to NTRK fusions testing in KIT, PDGFRA, and BRAF wild type GISTs. Pan-TRK IHC appears not relevant in this field but performing a simple NTRK3 fluorescent in situ hybridization test consists in a valuable approach to identify the rare NTRK3-rearranged GISTs treatable using anti-TRK therapies.
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Affiliation(s)
| | | | - Mélanie Cariou
- Registre des cancers digestifs du Finistère EA7479 SPURBO, Université de Bretagne Occidentale
| | | | | | | | | | | | | | - Arnaud Uguen
- Department of Pathology
- Univ Brest, Inserm, CHU de Brest, LBAI, Brest
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Torrence D, Xie Z, Zhang L, Chi P, Antonescu CR. Gastrointestinal stromal tumors with BRAF gene fusions. A report of two cases showing low or absent KIT expression resulting in diagnostic pitfalls. Genes Chromosomes Cancer 2021; 60:789-795. [PMID: 34398495 DOI: 10.1002/gcc.22991] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/12/2021] [Accepted: 08/13/2021] [Indexed: 01/02/2023] Open
Abstract
Although most gastrointestinal stromal tumors (GISTs) exhibit activating mutations in either KIT or PDGFRA, rare cases have shown to be driven by gene fusions involving kinases, mainly involving NTRK3, and rarely BRAF or FGFR1. BRAF gene rearrangements have been described in only two patients to date, as separate case reports. In addition, BRAF V600E mutation is an uncommon but established oncogenic pathway in GIST. In this report, we describe two new GIST cases harboring novel BRAF fusion genes, arising in two young-adult women (37 and 40 years of age) in the small bowel and distal esophagus, both with a spindle cell phenotype. The small bowel GIST measured 2.8 cm and showed a high cellularity and a mitotic rate of 20/50 HPFs, while the esophageal lesion measured 7 cm and 1/50 HPFs. Immunohistochemically, both tumors showed diffuse reactivity for DOG1, while KIT/CD117 was weakly positive in the small bowel GIST and completely negative in the esophageal tumor. Based on these findings, the latter case was misinterpreted as a low-grade myxoid leiomyosarcoma, as it showed a myxoid stroma, reactivity for SMA and focal positivity for desmin. Archer FusionPlex revealed a fusion between BRAF with either AGAP3 or MKRN1 gene partners. Moreover, MSK-IMPACT DNA targeted sequencing confirmed both fusions but did not identify additional mutations. In one case with available material, the BRAF gene rearrangement was also validated by FISH. The recognition of BRAF fusion-positive GISTs is critical as it may be associated with a low level of KIT expression and may result in diagnostic challenges with significant impact on therapeutic management. The clinical benefit with KIT inhibitors, such as imatinib, remains to be determined.
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Affiliation(s)
- Dianne Torrence
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Ziyu Xie
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Lei Zhang
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Ping Chi
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York, USA.,Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA.,Department of Medicine, Weill Cornell Medical College, New York, New York, USA
| | - Cristina R Antonescu
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
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Investigating the natural history and prognostic nature of NTRK gene fusions in solid tumors. Invest New Drugs 2021; 40:157-162. [PMID: 34341905 DOI: 10.1007/s10637-021-01157-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/26/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Several TRK inhibitors have demonstrated clinical efficacy in patients with solid tumors harboring NTRK gene fusions. However, the natural history and prognostic implications of NTRK fusions in solid tumors remain unknown. METHODS A cohort of 77 MD Anderson Cancer Center patients (MDACC) with NTRK gene fusions was identified and retrospectively compared to a second cohort from the Cancer Genome Atlas (TCGA) database. Due to paucity of events in early stage cancers and lack of TCGA data in rare tumors, 25 randomly selected MDACC patients were matched to 122 TCGA patients without NTRK gene fusion. Next we assessed the associations between NTRK gene fusion and overall (OS) and progression-free survivals (PFS). RESULTS Among the 77 MDACC patients with NTRK gene fusions, 18 NTRK fusion partners were identified. There were insufficient OS events for analysis in the matched cohort. PFS was not significantly different (p = 0.49) between the NTRK-fusion positive MDACC patients (median PFS 786 weeks, 95% CI 317-NE) and the NTRK-fusion negative TCGA patients (median PFS NE). The adjusted hazard ratio comparing TCGA patients to MDACC patients was HR = 0.72 (95% CI: 0.23-2.33), which trended towards a reduced rate of progression or death experienced by TCGA patients. CONCLUSIONS This study did not identify statistically significant associations between NTRK fusion and PFS. Nonsignificant trends estimated increases in the risk of progression or death events for patients with NTRK fusions when compared to matched controls. Our findings help illuminate the influence of NTRK fusions on the natural history of a variety of solid tumors.
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D'Alpino Peixoto R, Medeiros BA, Cronemberger EH. Resected High-Risk Rectal GIST Harboring NTRK1 Fusion: a Case Report and Review of the Literature. J Gastrointest Cancer 2021; 52:316-319. [PMID: 32506289 DOI: 10.1007/s12029-020-00423-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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50
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Tazzari M, Bergamaschi L, De Vita A, Collini P, Barisella M, Bertolotti A, Ibrahim T, Pasquali S, Castelli C, Vallacchi V. Molecular Determinants of Soft Tissue Sarcoma Immunity: Targets for Immune Intervention. Int J Mol Sci 2021; 22:ijms22147518. [PMID: 34299136 PMCID: PMC8303572 DOI: 10.3390/ijms22147518] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/09/2021] [Accepted: 07/09/2021] [Indexed: 01/05/2023] Open
Abstract
Soft tissue sarcomas (STSs) are a family of rare malignant tumors encompassing more than 80 histologies. Current therapies for metastatic STS, a condition that affects roughly half of patients, have limited efficacy, making innovative therapeutic strategies urgently needed. From a molecular point of view, STSs can be classified as translocation-related and those with a heavily rearranged genotype. Although only the latter display an increased mutational burden, molecular profiles suggestive of an “immune hot” tumor microenvironment are observed across STS histologies, and response to immunotherapy has been reported in both translocation-related and genetic complex STSs. These data reinforce the notion that immunity in STSs is multifaceted and influenced by both genetic and epigenetic determinants. Cumulative evidence indicates that a fine characterization of STSs at different levels is required to identify biomarkers predictive of immunotherapy response and to discover targetable pathways to switch on the immune sensitivity of “immune cold” tumors. In this review, we will summarize recent findings on the interplay between genetic landscape, molecular profiling and immunity in STSs. Immunological and molecular features will be discussed for their prognostic value in selected STS histologies. Finally, the local and systemic immunomodulatory effects of the targeted drugs imatinib and sunitinib will be discussed.
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Affiliation(s)
- Marcella Tazzari
- Immunotherapy-Cell Therapy and Biobank Unit, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, 47014 Meldola, Italy;
| | - Laura Bergamaschi
- Unit of Immunotherapy of Human Tumors, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (L.B.); (V.V.)
| | - Alessandro De Vita
- Osteoncology and Rare Tumors Center, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, 47014 Meldola, Italy; (A.D.V.); (T.I.)
| | - Paola Collini
- Department of Diagnostic Pathology and Laboratory Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (P.C.); (M.B.); (A.B.)
| | - Marta Barisella
- Department of Diagnostic Pathology and Laboratory Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (P.C.); (M.B.); (A.B.)
| | - Alessia Bertolotti
- Department of Diagnostic Pathology and Laboratory Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (P.C.); (M.B.); (A.B.)
| | - Toni Ibrahim
- Osteoncology and Rare Tumors Center, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, 47014 Meldola, Italy; (A.D.V.); (T.I.)
| | - Sandro Pasquali
- Department of Surgery, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy;
| | - Chiara Castelli
- Unit of Immunotherapy of Human Tumors, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (L.B.); (V.V.)
- Correspondence:
| | - Viviana Vallacchi
- Unit of Immunotherapy of Human Tumors, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (L.B.); (V.V.)
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