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Horio Y, Kuroda H, Masago K, Matsushita H, Sasaki E, Fujiwara Y. Current diagnosis and treatment of salivary gland-type tumors of the lung. Jpn J Clin Oncol 2024; 54:229-247. [PMID: 38018262 DOI: 10.1093/jjco/hyad160] [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: 09/13/2023] [Accepted: 11/02/2023] [Indexed: 11/30/2023] Open
Abstract
Salivary gland-type tumors of the lung are thought to originate from the submucosal exocrine glands of the large airways. Due to their rare occurrence, reports of their study are limited to small-scale or case reports. Therefore, daily clinical practices often require a search for previous reports. In the last 20 years, several genetic rearrangements have been identified, such as MYB::NF1B rearrangements in adenoid cystic carcinoma, CRTC1::MAML2 rearrangements in mucoepidermoid carcinoma, EWSR1::ATF1 rearrangements in hyalinizing clear cell carcinoma and rearrangements of the EWSR1 locus or FUS (TLS) locus in myoepithelioma and myoepithelial carcinoma. These molecular alterations have been useful in diagnosing these tumors, although they have not yet been linked to molecularly targeted therapies. The morphologic, immunophenotypic, and molecular characteristics of these tumors are similar to those of their counterparts of extrapulmonary origin, so clinical and radiologic differential diagnosis is required to distinguish between primary and metastatic disease of other primary sites. However, these molecular alterations can be useful in differentiating them from other primary lung cancer histologic types. The management of these tumors requires broad knowledge of the latest diagnostics, surgery, radiotherapy, bronchoscopic interventions, chemotherapy, immunotherapy as well as therapeutic agents in development, including molecularly targeted agents. This review provides a comprehensive overview of the current diagnosis and treatment of pulmonary salivary gland tumors, with a focus on adenoid cystic carcinoma and mucoepidermoid carcinoma, which are the two most common subtypes.
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Affiliation(s)
- Yoshitsugu Horio
- Department of Outpatient Services, Aichi Cancer Center Hospital, Nagoya, Japan
- Department of Thoracic Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Hiroaki Kuroda
- Department of Thoracic Surgery, Aichi Cancer Center Hospital, Nagoya, Japan
- Department of Thoracic Surgery, Teikyo University Hospital, Mizonokuchi, Kanagawa-prefecture, Japan
| | - Katsuhiro Masago
- Department of Pathology and Molecular Diagnostics, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Hirokazu Matsushita
- Division of Translational Oncoimmunology, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - Eiichi Sasaki
- Department of Pathology and Molecular Diagnostics, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Yutaka Fujiwara
- Department of Thoracic Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
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Cleymaet R, Vermassen T, Coopman R, Vermeersch H, De Keukeleire S, Rottey S. The Therapeutic Landscape of Salivary Gland Malignancies-Where Are We Now? Int J Mol Sci 2022; 23:ijms232314891. [PMID: 36499216 PMCID: PMC9740091 DOI: 10.3390/ijms232314891] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 11/23/2022] [Accepted: 11/25/2022] [Indexed: 11/29/2022] Open
Abstract
Salivary gland malignancies (SGMs) account for less than 5% of new diagnoses in head and neck tumors. If feasible, surgery is the preferred treatment modality. Nevertheless, some malignancies have a tendency of recurrence, with possible distant metastasis. Alternative treatment strategies, such as primary radiation or chemotherapeutics, often present low response rates. As a result, there is an unmet need for novel therapeutic approaches. Nowadays, target-based therapies (e.g., small inhibitors and immunotherapy) are used by the medical oncologist for possible treatment of advanced SGMs. Based on recent published trials, some novel treatments may provide additional disease control for some patients. However, sample sizes are small, the general findings are unsatisfactory, and a lot of uncertainties remain to be elucidated. Nevertheless, research shows that patients do not benefit from blind administration of systemic treatments and therefore a more personalized approach is highly needed. The aim of this review paper is to summarize the most recent advances in the biological understanding and molecular pathways of salivary gland cancers, the association of these pathways with the current treatments used and their implications for more personalized targeted-based therapies.
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Affiliation(s)
- Robbert Cleymaet
- Department of Oromaxillofacial and Plastic Surgery, Ghent University Hospital, 9000 Ghent, Belgium
| | - Tijl Vermassen
- Department Medical Oncology, University Hospital Ghent, 9000 Ghent, Belgium
- Department Basic and Applied Medical Sciences, Ghent University, 9000 Ghent, Belgium
- Cancer Research Institute Ghent, 9000 Ghent, Belgium
- Correspondence: ; Tel.: +32-9-332-26-92
| | - Renaat Coopman
- Department of Oromaxillofacial and Plastic Surgery, Ghent University Hospital, 9000 Ghent, Belgium
- Cancer Research Institute Ghent, 9000 Ghent, Belgium
| | - Hubert Vermeersch
- Department of Oromaxillofacial and Plastic Surgery, Ghent University Hospital, 9000 Ghent, Belgium
| | - Stijn De Keukeleire
- Department Internal Medicine, University Hospital Brussels, 1090 Brussels, Belgium
| | - Sylvie Rottey
- Department Medical Oncology, University Hospital Ghent, 9000 Ghent, Belgium
- Department Basic and Applied Medical Sciences, Ghent University, 9000 Ghent, Belgium
- Cancer Research Institute Ghent, 9000 Ghent, Belgium
- Drug Research Unit Ghent, University Hospital Ghent, 9000 Ghent, Belgium
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Identification of Fusion Genes and Targets for Genetically Matched Therapies in a Large Cohort of Salivary Gland Cancer Patients. Cancers (Basel) 2022; 14:cancers14174156. [PMID: 36077692 PMCID: PMC9454424 DOI: 10.3390/cancers14174156] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/15/2022] [Accepted: 08/25/2022] [Indexed: 11/19/2022] Open
Abstract
Simple Summary Salivary gland cancer (SGC) is a rare and heterogeneous cancer for which limited treatment options are available in the palliative treatment setting. Characterization of the SGC genetic landscape to identify actionable aberrations is therefore important. This research aimed to comprehensively assess the prevalence of various types of actionable aberrations, including gene fusions, in a large cohort of patients with different SGC subtypes. The combined approach using RNA- and DNA-based targeted next-generation sequencing panels revealed the presence of gene fusions in half of the cases, including several fusions not previously described in SGC. Targets for genetically matched therapies were identified in 28.3–81.8% of cases, depending on the SGC subtype (overall 53.7% of the cases). This highlights the potential of molecular diagnostics to select systemic treatment in SGC. Abstract Introduction: Salivary gland cancer (SGC) is a rare cancer for which systemic treatment options are limited. Therefore, it is important to characterize its genetic landscape in search for actionable aberrations, such as NTRK gene fusions. This research aimed to identify these actionable aberrations by combining NGS-based analysis of RNA (gene fusions) and DNA (single and multiple nucleotide variants, copy number variants, microsatellite instability and tumor mutational burden) in a large cohort of SGC patients. Methods: RNA and DNA were extracted from archival tissue of 121 patients with various SGC subtypes. Gene fusion analysis was performed using a customized RNA-based targeted NGS panel. DNA was sequenced using a targeted NGS panel encompassing 523 cancer-related genes. Cross-validation of NGS-based NTRK fusion detection and pan-TRK immunohistochemistry (IHC) was performed. Results: Fusion transcripts were detected in 50% of the cases and included both known (MYB-NFIB, MYBL1-NFIB, CRTC1-MAML2) and previously unknown fusions (including transcripts involving RET, BRAF or RAD51B). Only one NTRK fusion transcript was detected, in a secretory carcinoma case. Pan-TRK IHC (clone EPR17341) was false positive in 74% of cases. The proportion of patients with targets for genetically matched therapies differed among subtypes (salivary duct carcinoma: 82%, adenoid cystic carcinoma 28%, mucoepidermoid carcinoma 50%, acinic cell carcinoma 33%). Actionable aberrations were most often located in PIK3CA (n = 18, 15%), ERBB2 (n = 15, 12%), HRAS and NOTCH1 (both n = 9, 7%). Conclusions: Actionable genetic aberrations were seen in 53.7% of all SGC cases on the RNA and DNA level, with varying percentages between subtypes.
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Bauer A, Gebauer N, Knief J, Tharun L, Arnold N, Riecke A, Steinestel K, Witte HM. The expression of the adenosine pathway markers CD39 and CD73 in salivary gland carcinomas harbors the potential for novel immune checkpoint inhibition. J Cancer Res Clin Oncol 2022:10.1007/s00432-022-04211-x. [PMID: 35902382 DOI: 10.1007/s00432-022-04211-x] [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: 05/29/2022] [Accepted: 07/13/2022] [Indexed: 12/01/2022]
Abstract
BACKGROUND In salivary gland carcinomas (SGC), there is only a small fraction of entities that appears to profit from immune checkpoint inhibition (ICI). Recent findings connected the activation of adenosine-signaling with a tolerogenic microenvironment. Therefore, the inhibition of adenosine pathway markers (CD39 and/or CD73) can augment ICI and/or display a novel immunotherapeutic strategy beyond ICI. Here, we assessed the immuno-histochemical expression of CD39 and CD73 across a wide spectrum of SGCs. METHODS In total, 114 patients with SGCs consecutively diagnosed between 2001 and 2021 were assessed for clinicopathological baseline characteristics and underwent confirmatory histopathological review. Immunohistochemical expression levels of CD39 and CD73 were assessed by applying the tumor proportion score (TPS) and the immune proportional score (IPS) comparable to PD-L1 expression analysis in routine clinical practice. Additionally, findings were correlated with PD-L1 expression levels. RESULTS The median age was 60.6 and 51.8% patients were female. The cohort covered a spectrum of eight distinct entities. Advanced-stage disease (UICC/AJCC III/IVA-IVC) at initial diagnosis was present in the majority of patients (64/114). Immunohistochemical staining revealed positivity for CD39 and CD73 in 48.2% and 21.1% on tumor cells (TPS ≥ 1%) as well as 46.4% and 42.9% within the immune cell infiltrate (IPS ≥ 1%), respectively. Further comparative analyses revealed immune-cold entities such adenoid cystic carcinoma (AdCC), immune-hot tumors such as adenocarcinoma, not otherwise specified (AC (NOS)) and entities with intermediate immunologic features such as acinic cell carcinoma (ACC). CONCLUSION Current results indicate entity-specific adenosine signaling signatures. These findings suggest that the adenosine pathway plays a decisive role in tumor immunity among the major spectrum of SGCs. Targeting the adenosine pathway might pose a promising therapeutic option for selected entities.
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Affiliation(s)
- Arthur Bauer
- Department of Hematology and Oncology, Federal Armed Forces Hospital Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany.,Institute of Pathology and Molecular Pathology, Federal Armed Forces Hospital Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany
| | - Niklas Gebauer
- Department of Hematology and Oncology, University Hospital of Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
| | - Juliana Knief
- Institute of Pathology, Marienkrankenhaus Hamburg, Alfredstraße 9, 22087, Hamburg, Germany
| | - Lars Tharun
- Institute of Pathology, University Hospital of Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
| | - Nele Arnold
- Department of ENT, Federal Armed Forces Hospital Hamburg, Lesserstraße 180, 22049, Hamburg, Germany
| | - Armin Riecke
- Department of Hematology and Oncology, Federal Armed Forces Hospital Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany
| | - Konrad Steinestel
- Institute of Pathology and Molecular Pathology, Federal Armed Forces Hospital Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany
| | - Hanno M Witte
- Department of Hematology and Oncology, Federal Armed Forces Hospital Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany. .,Institute of Pathology and Molecular Pathology, Federal Armed Forces Hospital Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany. .,Department of Hematology and Oncology, University Hospital of Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.
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