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Roca E, Aujayeb A, Astoul P. Diagnosis of Pleural Mesothelioma: Is Everything Solved at the Present Time? Curr Oncol 2024; 31:4968-4983. [PMID: 39329996 PMCID: PMC11430569 DOI: 10.3390/curroncol31090368] [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: 07/15/2024] [Revised: 08/22/2024] [Accepted: 08/24/2024] [Indexed: 09/28/2024] Open
Abstract
Ranked high in worldwide growing health issues, pleural diseases affect approximately one million people globally per year and are often correlated with a poor prognosis. Among these pleural diseases, malignant pleural mesothelioma (PM), a neoplastic disease mainly due to asbestos exposure, still remains a diagnostic challenge. Timely diagnosis is imperative to define the most suitable therapeutic approach for the patient, but the choice of diagnostic modalities depends on operator experience and local facilities while bearing in mind the yield of each diagnostic procedure. Since the analysis of pleural fluid cytology is not sufficient in differentiating historical features in PM, histopathological and morphological features obtained via tissue biopsies are fundamental. The quality of biopsy samples is crucial and often requires highly qualified expertise. Since adequate tissue biopsy is essential, medical or video-assisted thoracoscopy (MT or VATS) is proposed as the most suitable approach, with the former being a physician-led procedure. Indeed, MT is the diagnostic gold standard for malignant pleural pathologies. Moreover, this medical or surgical approach can allow diagnostic and therapeutic procedures: it provides the possibility of video-assisted biopsies, the drainage of high volumes of pleural fluid and the administration of sterile calibrated talcum powder under visual control in order to achieve pleurodesis, placement of indwelling pleural catheters if required and in a near future potential intrapleural therapy. In this context, dedicated diagnostic pathways remain a crucial need, especially to quickly and properly diagnose PM. Lastly, the interdisciplinary approach and multidisciplinary collaboration should always be implemented in order to direct the patient to the best customised diagnostic and therapeutic pathway. At the present time, the diagnosis of PM remains an unsolved problem despite MDT (multidisciplinary team) meetings, mainly because of the lack of standardised diagnostic work-up. This review aims to provide an overview of diagnostic procedures in order to propose a clear strategy.
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Affiliation(s)
- Elisa Roca
- Thoracic Oncology, Lung Unit, P. Pederzoli Hospital, Peschiera Del Garda, VR, Italy;
| | - Avinash Aujayeb
- Respiratory Department, Northumbria Health Care NHS Foundation Trust, Care of Gail Hewitt, Newcastle NE23 6NZ, UK;
| | - Philippe Astoul
- Department of Thoracic Oncology, Pleural Diseases and Interventional Pulmonology, North Hospital, Aix-Marseille University, Chemin des Bourrely, 13005 Marseille, France
- La Timone Campus, Aix-Marseille University, 13005 Marseille, France
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2
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Bertoli E, De Carlo E, Bortolot M, Stanzione B, Del Conte A, Spina M, Bearz A. Targeted Therapy in Mesotheliomas: Uphill All the Way. Cancers (Basel) 2024; 16:1971. [PMID: 38893092 PMCID: PMC11171080 DOI: 10.3390/cancers16111971] [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: 04/06/2024] [Revised: 05/16/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
Mesothelioma (MM) is an aggressive and lethal disease with few therapeutic opportunities. Platinum-pemetrexed chemotherapy is the backbone of first-line treatment for MM. The introduction of immunotherapy (IO) has been the only novelty of the last decades, allowing an increase in survival compared to standard chemotherapy (CT). However, IO is not approved for epithelioid histology in many countries. Therefore, therapy for relapsed MM remains an unmet clinical need, and the prognosis of MM remains poor, with an average survival of only 18 months. Increasing evidence reveals MM complexity and heterogeneity, of which histological classification fails to explain. Thus, scientific focus on possibly new molecular markers or cellular targets is increasing, together with the search for target therapies directed towards them. The molecular landscape of MM is characterized by inactivating tumor suppressor alterations, the most common of which is found in CDKN2A, BAP1, MTAP, and NF2. In addition, cellular targets such as mesothelin or metabolic enzymes such as ASS1 could be potentially amenable to specific therapies. This review examines the major targets and relative attempts of therapeutic approaches to provide an overview of the potential prospects for treating this rare neoplasm.
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Affiliation(s)
- Elisa Bertoli
- Department of Medical Oncology, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS, 33081 Aviano, Italy; (E.B.); (E.D.C.); (M.B.); (B.S.); (A.D.C.); (M.S.)
| | - Elisa De Carlo
- Department of Medical Oncology, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS, 33081 Aviano, Italy; (E.B.); (E.D.C.); (M.B.); (B.S.); (A.D.C.); (M.S.)
| | - Martina Bortolot
- Department of Medical Oncology, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS, 33081 Aviano, Italy; (E.B.); (E.D.C.); (M.B.); (B.S.); (A.D.C.); (M.S.)
- Department of Medicine, University of Udine, 33100 Udine, Italy
| | - Brigida Stanzione
- Department of Medical Oncology, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS, 33081 Aviano, Italy; (E.B.); (E.D.C.); (M.B.); (B.S.); (A.D.C.); (M.S.)
| | - Alessandro Del Conte
- Department of Medical Oncology, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS, 33081 Aviano, Italy; (E.B.); (E.D.C.); (M.B.); (B.S.); (A.D.C.); (M.S.)
| | - Michele Spina
- Department of Medical Oncology, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS, 33081 Aviano, Italy; (E.B.); (E.D.C.); (M.B.); (B.S.); (A.D.C.); (M.S.)
| | - Alessandra Bearz
- Department of Medical Oncology, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS, 33081 Aviano, Italy; (E.B.); (E.D.C.); (M.B.); (B.S.); (A.D.C.); (M.S.)
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3
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Sorino C, Mondoni M, Marchetti G, Agati S, Inchingolo R, Mei F, Flamini S, Lococo F, Feller-Kopman D. Pleural Mesothelioma: Advances in Blood and Pleural Biomarkers. J Clin Med 2023; 12:7006. [PMID: 38002620 PMCID: PMC10672377 DOI: 10.3390/jcm12227006] [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: 09/28/2023] [Revised: 10/30/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Pleural mesothelioma (PM) is a type of cancer that is highly related to exposure to asbestos fibers. It shows aggressive behavior, and the current therapeutic approaches are usually insufficient to change the poor prognosis. Moreover, apart from staging and histological classification, there are no validated predictors of its response to treatment or its long-term outcomes. Numerous studies have investigated minimally invasive biomarkers in pleural fluid or blood to aid in earlier diagnosis and prognostic assessment of PM. The most studied marker in pleural effusion is mesothelin, which exhibits good specificity but low sensitivity, especially for non-epithelioid PM. Other biomarkers found in pleural fluid include fibulin-3, hyaluronan, microRNAs, and CYFRA-21.1, which have lower diagnostic capabilities but provide prognostic information and have potential roles as therapeutic targets. Serum is the most investigated matrix for biomarkers of PM. Several serum biomarkers in PM have been studied, with mesothelin, osteopontin, and fibulin-3 being the most often tested. A soluble mesothelin-related peptide (SMRP) is the only FDA-approved biomarker in patients with suspected mesothelioma. With different serum and pleural fluid cut-offs, it provides useful information on the diagnosis, prognosis, follow-up, and response to therapy in epithelioid PM. Panels combining different markers and proteomics technologies show promise in terms of improving clinical performance in the diagnosis and monitoring of mesothelioma patients. However, there is still no evidence that early detection can improve the treatment outcomes of PM patients.
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Affiliation(s)
- Claudio Sorino
- Division of Pulmonology, Sant’Anna Hospital of Como, University of Insubria, 21100 Varese, Italy; (C.S.); (S.A.)
| | - Michele Mondoni
- Respiratory Unit, ASST Santi Paolo e Carlo, Department of Health Sciences, Università degli Studi di Milano, 20122 Milan, Italy
| | | | - Sergio Agati
- Division of Pulmonology, Sant’Anna Hospital of Como, University of Insubria, 21100 Varese, Italy; (C.S.); (S.A.)
| | - Riccardo Inchingolo
- Pulmonary Medicine Unit, Department of Medical and Surgical Sciences, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy;
| | - Federico Mei
- Respiratory Diseases Unit, Department of Internal Medicine, Azienda Ospedaliero Universitaria delle Marche, 60126 Ancona, Italy;
| | - Sara Flamini
- Departement of Thoracic Surgery, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (S.F.); (F.L.)
- Thoracic Surgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
| | - Filippo Lococo
- Departement of Thoracic Surgery, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (S.F.); (F.L.)
- Thoracic Surgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
| | - David Feller-Kopman
- Department of Medicine, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA;
- Division of Pulmonary and Critical Care Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03766, USA
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4
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Hassan R, Butler M, O'Cearbhaill RE, Oh DY, Johnson M, Zikaras K, Smalley M, Ross M, Tanyi JL, Ghafoor A, Shah NN, Saboury B, Cao L, Quintás-Cardama A, Hong D. Mesothelin-targeting T cell receptor fusion construct cell therapy in refractory solid tumors: phase 1/2 trial interim results. Nat Med 2023; 29:2099-2109. [PMID: 37501016 PMCID: PMC10427427 DOI: 10.1038/s41591-023-02452-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 06/08/2023] [Indexed: 07/29/2023]
Abstract
The T cell receptor fusion construct (TRuC) gavocabtagene autoleucel (gavo-cel) consists of single-domain anti-mesothelin antibody that integrates into the endogenous T cell receptor (TCR) and engages the signaling capacity of the entire TCR upon mesothelin binding. Here we describe phase 1 results from an ongoing phase1/2 trial of gavo-cel in patients with treatment-refractory mesothelin-expressing solid tumors. The primary objectives were to evaluate safety and determine the recommended phase 2 dose (RP2D). Secondary objectives included efficacy. Thirty-two patients received gavo-cel at increasing doses either as a single agent (n = 3) or after lymphodepletion (LD, n = 29). Dose-limiting toxicities of grade 3 pneumonitis and grade 5 bronchioalveolar hemorrhage were noted. The RP2D was determined as 1 × 108 cells per m2 after LD. Grade 3 or higher pneumonitis was seen in 16% of all patients and in none at the RP2D; grade 3 or higher cytokine release syndrome occurred in 25% of all patients and in 15% at the RP2D. In 30 evaluable patients, the overall response rate and disease control rate were 20% (13% confirmed) and 77%, respectively, and the 6-month overall survival rate was 70%. Gavo-cel warrants further study in patients with mesothelin-expressing cancers given its encouraging anti-tumor activity, but it may have a narrow therapeutic window. ClinicalTrials.gov identifier: NCT03907852 .
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Affiliation(s)
- Raffit Hassan
- Thoracic and GI Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Marcus Butler
- Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Roisin E O'Cearbhaill
- Department of Medical Oncology, Memorial Sloan Kettering Cancer Center, Weill Cornell Medical College, New York, NY, USA
| | - David Y Oh
- Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | | | | | | | | | - Janos L Tanyi
- Hospital of the University of Pennsylvania, Abramson Cancer Center, Philadelphia, PA, USA
| | - Azam Ghafoor
- Thoracic and GI Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Nirali N Shah
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Babak Saboury
- Department of Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, Bethesda, MD, USA
| | - Liang Cao
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | | | - David Hong
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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Zhang X, Yu Y, Peer CJ, Landsman R, Skorupan N, Cao L, Alewine C. Low serum mesothelin in pancreatic cancer patients results from retention of shed mesothelin in the tumor microenvironment. Transl Oncol 2022; 21:101440. [PMID: 35523008 PMCID: PMC9079715 DOI: 10.1016/j.tranon.2022.101440] [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: 02/24/2022] [Revised: 04/06/2022] [Accepted: 04/23/2022] [Indexed: 11/15/2022] Open
Abstract
Pancreas ductal adenocarcinoma (PDAC) frequently expresses mesothelin. No elevation in serum mesothelin was observed in PDAC patients. Shed mesothelin transit from intratumoral fluid to serum compartments is slowed in PDAC.
Mesothelin (MSLN) is overexpressed by many cancers, including pancreatic ductal adenocarcinoma (PDAC) and has consequently become a target for anti-cancer therapeutics. Mature, membrane bound MSLN is cleaved by proteases, releasing a shed form that transits to the circulation. Many patients with mesothelioma and ovarian cancer have abnormally high serum MSLN concentration. However, serum MSLN concentration in PDAC patients rarely exceeds levels of healthy controls. Here, serum MSLN concentration in advanced PDAC patients was examined pre- and post-treatment. Serum MSLN did not correlate with tumor MSLN expression, nor with changes in tumor burden as assessed by PDAC serum tumor marker CA19–9. Subsequently, tumor-bearing mouse models were used to investigate the fate of shed MSLN in PDAC versus a control cervical cancer model. Efficiency of MSLN secretion into the serum was cell-line dependent. Tumors from some PDAC lines had poor MSLN secretion efficiency although these lines had similar or higher MSLN shedding rate, total and surface MSLN expression. Measurements of compartment-specific MSLN concentration taken at equilibrium suggested that tumors with poor MSLN secretion efficiency trapped shed MSLN in the tumor microenvironment (TME), a finding confirmed by dynamic experiments using a doxycycline-inducible MSLN expression system. Tumors with the poorest MSLN secretion efficiency had higher collagen density and increased abundance of MSLN binding partner MUC16. The tumor with the worst secretion efficiency could rebind shed MSLN to the cancer cell surface. Altogether, these data suggest that PDAC can trap shed MSLN within the TME. This finding has potential significance for design of MSLN-targeted therapeutics.
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Affiliation(s)
- Xianyu Zhang
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Besthesda, MD, 20892-4264, USA
| | - Yunkai Yu
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Besthesda, MD, 20892-4264, USA
| | - Cody J Peer
- Clinical Pharmacology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Besthesda, MD, 20892-4264, USA
| | - Rebekah Landsman
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Besthesda, MD, 20892-4264, USA
| | - Nebojsa Skorupan
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Besthesda, MD, 20892-4264, USA; Medical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892-4264, USA
| | - Liang Cao
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Besthesda, MD, 20892-4264, USA
| | - Christine Alewine
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Besthesda, MD, 20892-4264, USA.
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6
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Yu Y, Esposito D, Kang Z, Lu J, Remaley AT, De Giorgi V, Chen LN, West K, Cao L. mRNA vaccine-induced antibodies more effective than natural immunity in neutralizing SARS-CoV-2 and its high affinity variants. Sci Rep 2022; 12:2628. [PMID: 35173254 PMCID: PMC8850441 DOI: 10.1038/s41598-022-06629-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 01/17/2022] [Indexed: 02/07/2023] Open
Abstract
Several variants of SARS-CoV-2 have emerged. Those with mutations in the angiotensin-converting enzyme (ACE2) receptor binding domain (RBD) are associated with increased transmission and severity. In this study, we developed both antibody quantification and functional neutralization assays. Analyses of both COVID-19 convalescent and diagnostic cohorts strongly support the use of RBD antibody levels as an excellent surrogate to biochemical neutralization activities. Data further revealed that the samples from mRNA vaccinated individuals had a median of 17 times higher RBD antibody levels and a similar degree of increased neutralization activities against RBD-ACE2 binding than those from natural infections. Our data showed that N501Y RBD had fivefold higher ACE2 binding than the original variant. While some antisera from naturally infected subjects had substantially reduced neutralization ability against N501Y RBD, all blood samples from vaccinated individuals were highly effective in neutralizing it. Thus, our data indicates that mRNA vaccination may generate more neutralizing RBD antibodies than natural immunity. It further suggests a potential need to maintain high RBD antibody levels to control the more infectious SARS-CoV-2 variants.
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Affiliation(s)
- Yunkai Yu
- Genetics Branch, Center for Cancer Research, National Cancer Institute, 37 Convent Dr. MSC 4265, Bldg 37, Rm 6040, Bethesda, MD, 20892, USA
| | - Dominic Esposito
- Protein Expression Laboratory, NCI RAS Initiative, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Zhigang Kang
- Genetics Branch, Center for Cancer Research, National Cancer Institute, 37 Convent Dr. MSC 4265, Bldg 37, Rm 6040, Bethesda, MD, 20892, USA
| | - Jianming Lu
- Codex BioSolutions, Inc, Gaithersburg, MD, USA
| | - Alan T Remaley
- Lipoprotein Metabolism Section, National Heat, Lung, and Blood Institute, Bethesda, MD, USA
| | - Valeria De Giorgi
- Department of Transfusion Medicine, National Institutes of Health Clinical Center, Bethesda, MD, USA
| | - Leonard N Chen
- Department of Transfusion Medicine, National Institutes of Health Clinical Center, Bethesda, MD, USA
| | - Kamille West
- Department of Transfusion Medicine, National Institutes of Health Clinical Center, Bethesda, MD, USA
| | - Liang Cao
- Genetics Branch, Center for Cancer Research, National Cancer Institute, 37 Convent Dr. MSC 4265, Bldg 37, Rm 6040, Bethesda, MD, 20892, USA.
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Yeo D, Castelletti L, van Zandwijk N, Rasko JEJ. Hitting the Bull's-Eye: Mesothelin's Role as a Biomarker and Therapeutic Target for Malignant Pleural Mesothelioma. Cancers (Basel) 2021; 13:3932. [PMID: 34439085 PMCID: PMC8391149 DOI: 10.3390/cancers13163932] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 12/16/2022] Open
Abstract
Malignant pleural mesothelioma (MPM) is an aggressive cancer with limited treatment options and poor prognosis. MPM originates from the mesothelial lining of the pleura. Mesothelin (MSLN) is a glycoprotein expressed at low levels in normal tissues and at high levels in MPM. Many other solid cancers overexpress MSLN, and this is associated with worse survival rates. However, this association has not been found in MPM, and the exact biological role of MSLN in MPM requires further exploration. Here, we discuss the current research on the diagnostic and prognostic value of MSLN in MPM patients. Furthermore, MSLN has become an attractive immunotherapy target in MPM, where better treatment strategies are urgently needed. Several MSLN-targeted monoclonal antibodies, antibody-drug conjugates, immunotoxins, cancer vaccines, and cellular therapies have been tested in the clinical setting. The biological rationale underpinning MSLN-targeted immunotherapies and their potential to improve MPM patient outcomes are reviewed.
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Affiliation(s)
- Dannel Yeo
- Li Ka Shing Cell & Gene Therapy Program, The University of Sydney, Camperdown, NSW 2050, Australia; (D.Y.); (L.C.)
- Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia;
- Cell and Molecular Therapies, Royal Prince Alfred Hospital, Sydney Local Health District (SLHD), Camperdown, NSW 2050, Australia
| | - Laura Castelletti
- Li Ka Shing Cell & Gene Therapy Program, The University of Sydney, Camperdown, NSW 2050, Australia; (D.Y.); (L.C.)
- Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia;
- Cell and Molecular Therapies, Royal Prince Alfred Hospital, Sydney Local Health District (SLHD), Camperdown, NSW 2050, Australia
| | - Nico van Zandwijk
- Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia;
- Cell and Molecular Therapies, Royal Prince Alfred Hospital, Sydney Local Health District (SLHD), Camperdown, NSW 2050, Australia
- Concord Repatriation General Hospital, Sydney Local Health District (SLHD), Concord, NSW 2139, Australia
| | - John E. J. Rasko
- Li Ka Shing Cell & Gene Therapy Program, The University of Sydney, Camperdown, NSW 2050, Australia; (D.Y.); (L.C.)
- Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia;
- Cell and Molecular Therapies, Royal Prince Alfred Hospital, Sydney Local Health District (SLHD), Camperdown, NSW 2050, Australia
- Gene and Stem Cell Therapy Program, Centenary Institute, The University of Sydney, Camperdown, NSW 2050, Australia
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8
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Cao L, Yu Y, Thomas A, Zhang J, Onda M, Meltzer P, Hassan R, Pastan I. Megakaryocyte Potentiating Factor as a Predictive Biomarker for Therapies Against Malignant Mesothelioma. JCO Precis Oncol 2018; 2018. [PMID: 30370397 DOI: 10.1200/po.17.00282] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Purpose Effective biomarkers for malignant mesothelioma (MM) are needed for clinical management and the development of mesothelin-targeted therapies. We evaluated serum megakaryocyte potentiating factor (MPF) as a biomarker predictive of treatment outcome in patients with MM and for developing mesothelin-targeted therapies. Materials and Methods Serial serum samples from patients with MM in two clinical trials of an antimesothelin immunotoxin were tested with our clinically validated MPF assay. Correlative studies were performed to determine the test effectiveness in treatment monitoring and outcome prediction. MPF was further evaluated for an association with response to an antimesothelin therapy and for disease monitoring. Results There was a significant reduction of serum MPF in patients with elevated baseline and radiologic response, with an average change from -52% to -78% after one to six cycles. Using a -50% change as the cutoff, patients with MM with positive MPF response had significantly improved progression-free survival (P < .001), with the median extended from 1.9 to 11.3 months. These patients with MPF response further exhibited improved overall survival (P = .004), with the median extended from 8.8 to 22.3 months. In patients with refractory MM, there was an association between elevated pretreatment serum MPF and radiologic response to an antimesothelin therapy (P = .033). Furthermore, in these response patients, serum MPF was monitored between 32.2 and 63.8 months and was found to reflect treatment response and disease progression. Conclusion At a cutoff of -50% change after receiving systemic therapies, a reduction in MPF was associated with improved clinical outcome, both progression-free survival and overall survival. An elevated baseline serum MPF was associated with a response to an antimesothelin therapy in patients with refractory MM; however, this finding needs to be confirmed in another study.
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Affiliation(s)
- Liang Cao
- National Cancer Institute, Bethesda, MD
| | - Yunkai Yu
- National Cancer Institute, Bethesda, MD
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