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Abstract
The technique of cell-free DNA (cfDNA) analysis, also called liquid biopsy, has been developed over the past several years to serve as a minimal residual disease tool, as has already been done with reliability and robustness in acute leukemias. This technique has important theoretical advantages, including the simplicity of acquiring blood samples, which can easily be repeated over time, its noninvasive and quantitative nature, which provides results consistent with the results obtained from tumor genomic DNA, and its speed and low cost. cfDNA analysis, as the leading tool to quantify somatic mutations, is a major technological leap in the noninvasive management of lymphomas. This technology may empower monitoring and treatment adjustment in real time and enable the quick detection of refractory lymphomas and resistance to routine therapies. Here, we summarize the results that have established the clinical relevance of cfDNA in diagnostic and prognostic stratification and the monitoring of lymphoma treatments.
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Affiliation(s)
- Vincent Camus
- Department of Hematology, Centre Henri Becquerel, 1 Rue D'Amiens, 76038 Rouen Cedex, France
| | - Fabrice Jardin
- Department of Hematology, Centre Henri Becquerel, 1 Rue D'Amiens, 76038 Rouen Cedex, France
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2
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Abstract
"PET imaging with fluorodeoxyglucose (FDG), integrated with PET/computed tomography (FDG-PET/CT), is an effective management tool of diffuse large B-cell lymphoma (DLBCL). The results of end-of-treatment (EOT) FDG-PET/CT are more accurate for detection of active disease with residual masses on CT. Complete response defined by EOT FDG-PET/CT (PET-CR) correlates with long-term outcome of patients. Treatment efficacy is determined using EOT PET/CT rather than progression-free survival (PFS) for clinical trials assessing novel drugs. If the correlation of EOT PET/CT with PFS is further proven in large studies and meta-analyses, EOT PET-CR could serve as an expedited novel endpoint replacing PFS."
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3
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Camus V, Bohers E, Dubois S, Tilly H, Jardin F. Circulating tumor DNA: an important tool in precision medicine for lymphoma. EXPERT REVIEW OF PRECISION MEDICINE AND DRUG DEVELOPMENT 2017. [DOI: 10.1080/23808993.2018.1412798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Vincent Camus
- UMR INSERM U1245 and Department of Clinical Hematology, Centre Henri Becquerel, Rouen, France
| | - Elodie Bohers
- UMR INSERM U1245 and Department of Clinical Hematology, Centre Henri Becquerel, Rouen, France
| | - Sydney Dubois
- UMR INSERM U1245 and Department of Clinical Hematology, Centre Henri Becquerel, Rouen, France
| | - Hervé Tilly
- UMR INSERM U1245 and Department of Clinical Hematology, Centre Henri Becquerel, Rouen, France
| | - Fabrice Jardin
- UMR INSERM U1245 and Department of Clinical Hematology, Centre Henri Becquerel, Rouen, France
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Camus V, Jardin F, Tilly H. The value of liquid biopsy in diagnosis and monitoring of diffuse large b-cell lymphoma: recent developments and future potential. Expert Rev Mol Diagn 2017; 17:557-566. [DOI: 10.1080/14737159.2017.1319765] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Kanemasa Y, Shimoyama T, Sasaki Y, Tamura M, Sawada T, Omuro Y, Hishima T, Maeda Y. Analysis of prognostic value of complete response by PET-CT and further stratification by clinical and biological markers in DLBCL patients. Med Oncol 2017; 34:29. [PMID: 28083854 DOI: 10.1007/s12032-017-0885-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 01/06/2017] [Indexed: 12/29/2022]
Abstract
Positron emission tomography-computed tomography (PET-CT) is performed as the standard method for response assessment of diffuse large B cell lymphoma (DLBCL) patients. However, a substantial proportion of patients experience relapse even if they have achieved complete response (CR) defined by PET-CT. We validated the prognostic value of CR by PET-CT and applied the National Comprehensive Cancer Network-International Prognostic Index (NCCN-IPI) and cell of origin (COO) to patients with CR by PET-CT to evaluate their additional predictive ability for survival outcomes. We retrospectively analyzed DLBCL patients who were treated with R-CHOP or an R-CHOP-like regimen and who achieved CR by PET-CT or CT only. A total of 185 patients were analyzed: 114 patients achieved CR by PET-CT and 71 patients by CT only. Patients with CR by PET-CT had significantly better overall survival (OS) than those with CR by CT (5-year OS, 87.5 vs. 62.4%, P = 0.003). Patients with high risk according to the NCCN-IPI had a dismal outcome despite achieving CR by PET-CT (5-year OS, 61.8%). In contrast, low-, low-intermediate-, and high-intermediate-risk patients had excellent outcomes (5-year OS, 100, 89.7, and 93.5%, respectively). Among patients with CR by PET-CT, patients with germinal center B cell (GCB) DLBCL (n = 40) had significantly better survival than those with non-GCB DLBCL (n = 57) (5-year OS, 96.9 vs. 75.5%, P = 0.039). We demonstrated that CR by PET-CT was a better predictor of survival outcomes than CR by CT only. The NCCN-IPI and COO subtypes could identify a subpopulation of poor-risk patients among those who achieved CR by PET-CT.
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Affiliation(s)
- Yusuke Kanemasa
- Department of Medical Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, Japan.
| | - Tatsu Shimoyama
- Department of Medical Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, Japan
| | - Yuki Sasaki
- Department of Clinical Research Support, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - Miho Tamura
- Department of Medical Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, Japan
| | - Takeshi Sawada
- Department of Medical Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, Japan
| | - Yasushi Omuro
- Department of Medical Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, Japan
| | - Tsunekazu Hishima
- Department of Pathology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - Yoshiharu Maeda
- Department of Medical Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, Japan
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