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He Q, Shi X, Yan J, Wu M, Gu C, Yu X. Circulating tumor DNA serial monitoring of relapse and responses to tislelizumab immunotherapy as second‑line monotherapy for metastatic esophageal squamous cell carcinoma: A prospective study. Mol Clin Oncol 2024; 20:29. [PMID: 38414510 PMCID: PMC10895470 DOI: 10.3892/mco.2024.2727] [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: 06/29/2023] [Accepted: 01/08/2024] [Indexed: 02/29/2024] Open
Abstract
Anti-programmed cell death 1 immuno-monotherapy has become the second-line standard treatment for advanced esophageal squamous cell carcinoma (ESCC) after the failure of first-line chemotherapy. However, new biomarkers are still needed to identify patients at risk of tumor progression and to select patients with advanced ESCC who are likely to benefit from immunotherapy. A total of 12 patients with advanced ESCC treated with tislelizumab were prospectively enrolled and endoscopic biopsy samples were collected. Plasma was obtained prior to and after every 2-3 treatment cycles with tislelizumab and when disease progression occurred. Targeted sequencing of 425 genes from plasma cell-free DNA, DNA from leukocytes and fixed esophageal tumor biopsies was performed. The patients underwent imaging analyses every 6-8 weeks until disease progression. The association between status of circulating tumor DNA (ctDNA) or changes in ctDNA following tislelizumab immunotherapy and response, tumor progression and survival was determined. All patients had evaluable next-generation sequencing results at the time of analysis. The results showed that patients with ESCC with liver metastasis had a significantly shorter median progression-free survival (mPFS: 1.4 vs. 11.7 months; P=0.037). TSC complex subunit 2 [11.7 months vs. not reached (NR); P=0.004] and zinc finger protein 217 (11.7 months vs. NR; P=0.022) gene mutations were the independent and negative prognostic factors for median overall survival (OS), respectively. Of note, ctDNA dynamic changes expressed as ∆ mutant molecules per milliliter of plasma (∆MMPM; MMPM detected at the first monitoring time-point after the first infusion of tislelizumab as baseline MMPM) predicted progression-free survival (PFS) and OS more accurately compared to the ctDNA change of an individual gene. ∆MMPM <20% was an independent predictor of PFS (2.8 vs. 14.6 months; P=0.029), although there was no significant difference for OS (16.7 vs. 17.6 months; P=0.830). In conclusion, changes in ctDNA levels were associated with anti-tumor effects, progression and disease-specific survival. ctDNA sequencing is promising for predicting response and progression after tislelizumab immunotherapy as second-line monotherapy for advanced ESCC [the present study was part of the RATIONALE-302 study (ClinicalTrials.gov identifier no. NCT03430843; 29.01.2018)].
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Affiliation(s)
- Qiong He
- Department of Oncology, Zhejiang Cancer Hospital, Institute of Basic Medicine and Cancer, Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, P.R. China
| | - Xun Shi
- Department of Oncology, Zhejiang Cancer Hospital, Institute of Basic Medicine and Cancer, Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, P.R. China
| | - Junrong Yan
- Medical Department, Nanjing Geneseeq Technology Inc., Nanjing, Jiangsu 210032, P.R. China
| | - Mengmeng Wu
- Medical Department, Nanjing Geneseeq Technology Inc., Nanjing, Jiangsu 210032, P.R. China
| | - Cuiping Gu
- Department of Oncology, Zhejiang Cancer Hospital, Institute of Basic Medicine and Cancer, Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, P.R. China
| | - Xinmin Yu
- Department of Oncology, Zhejiang Cancer Hospital, Institute of Basic Medicine and Cancer, Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, P.R. China
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Wen X, Coradduzza D, Shen J, Scanu AM, Muroni MR, Massidda M, Rallo V, Carru C, Angius A, De Miglio MR. Harnessing Minimal Residual Disease as a Predictor for Colorectal Cancer: Promising Horizons Amidst Challenges. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1886. [PMID: 37893604 PMCID: PMC10608819 DOI: 10.3390/medicina59101886] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 10/29/2023]
Abstract
Minimal Residual Disease (MRD) detection has emerged as an independent factor in clinical and pathological cancer assessment offering a highly effective method for predicting recurrence in colorectal cancer (CRC). The ongoing research initiatives such as the DYNAMIC and CIRCULATE-Japan studies, have revealed the potential of MRD detection based on circulating tumor DNA (ctDNA) to revolutionize management for CRC patients. MRD detection represents an opportunity for risk stratification, treatment guidance, and early relapse monitoring. Here we overviewed the evolving landscape of MRD technology and its promising applications through the most up-to-date research and reviews, underscoring the transformative potential of this approach. Our primary focus is to provide a point-to-point perspective and address key challenges relating to the adoption of ctDNA-based MRD detection in the clinical setting. By identifying critical areas of interest and hurdles surrounding clinical significance, detection criteria, and potential applications of basic research, this article offers insights into the advancements needed to evaluate the role of ctDNA in CRC MRD detection, contributing to favorable clinical options and improved outcomes in the management of CRC.
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Affiliation(s)
- Xiaofen Wen
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; (X.W.); (D.C.); (J.S.); (C.C.)
- Department of Medical Oncology, Cancer Hospital of Shantou University Medical College, Shantou 515041, China
| | - Donatella Coradduzza
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; (X.W.); (D.C.); (J.S.); (C.C.)
| | - Jiaxin Shen
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; (X.W.); (D.C.); (J.S.); (C.C.)
- Department of Hematology, The First Affiliated Hospital of Shantou University Medical College, Shantou 515041, China
| | - Antonio Mario Scanu
- Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy; (A.M.S.); (M.R.M.); (M.M.)
| | - Maria Rosaria Muroni
- Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy; (A.M.S.); (M.R.M.); (M.M.)
| | - Matteo Massidda
- Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy; (A.M.S.); (M.R.M.); (M.M.)
| | - Vincenzo Rallo
- Istituto di Ricerca Genetica e Biomedica (IRGB), Consiglio Nazionale delle Ricerche, CNR, Cittadella Universitaria di Cagliari, Monserrato, 09042 Cagliari, Italy; (V.R.); (A.A.)
| | - Ciriaco Carru
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; (X.W.); (D.C.); (J.S.); (C.C.)
| | - Andrea Angius
- Istituto di Ricerca Genetica e Biomedica (IRGB), Consiglio Nazionale delle Ricerche, CNR, Cittadella Universitaria di Cagliari, Monserrato, 09042 Cagliari, Italy; (V.R.); (A.A.)
| | - Maria Rosaria De Miglio
- Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy; (A.M.S.); (M.R.M.); (M.M.)
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Qiu C, Shen X, Lu H, Chen Y, Xu C, Zheng P, Xia Y, Wang J, Zhang Y, Li S, Zou P, Cui R, Chen J. Combination therapy with HSP90 inhibitors and piperlongumine promotes ROS-mediated ER stress in colon cancer cells. Cell Death Discov 2023; 9:375. [PMID: 37833257 PMCID: PMC10576049 DOI: 10.1038/s41420-023-01672-y] [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: 05/03/2023] [Revised: 09/22/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023] Open
Abstract
Colon cancer is a major cause of cancer-related death. Despite recent improvements in the treatment of colon cancer, new strategies to improve the overall survival of patients are urgently needed. Heat shock protein 90 (HSP90) is widely recognized as a promising target for treating various cancers, including colon cancer. However, no HSP90 inhibitor has been approved for clinical use due to limited efficacy. In this study, we evaluated the antitumor activities of HSP90 inhibitors in combination with piperlongumine in colon cancer cells. We show that combination treatment with HSP90 inhibitors and piperlongumine displayed strong synergistic interaction in colon cancer cells. These agents synergize by promoting ER stress, JNK activation, and DNA damage. This process is fueled by oxidative stress, which is caused by the accumulation of reactive oxygen species. These studies nominated piperlongumine as a promising agent for HSP90 inhibitor-based combination therapy against colon cancer.
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Affiliation(s)
- Chenyu Qiu
- Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, 325035, China
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Xin Shen
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Hui Lu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Yinghua Chen
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Chenxin Xu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Peisen Zheng
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Yiqun Xia
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, 325035, China
| | - Junqi Wang
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, 325035, China
| | - Yafei Zhang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Shaotang Li
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, 325035, China
| | - Peng Zou
- Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, 325035, China.
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Ri Cui
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Jundixia Chen
- Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, 325035, China.
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Loft M, To YH, Gibbs P, Tie J. Clinical application of circulating tumour DNA in colorectal cancer. Lancet Gastroenterol Hepatol 2023; 8:837-852. [PMID: 37499673 DOI: 10.1016/s2468-1253(23)00146-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/07/2023] [Accepted: 05/09/2023] [Indexed: 07/29/2023]
Abstract
Liquid biopsies that detect circulating tumour DNA (ctDNA) have the potential to revolutionise the personalised management of colorectal cancer. For patients with early-stage disease, emerging clinical applications include the assessment of molecular residual disease after surgery, the monitoring of adjuvant chemotherapy efficacy, and early detection of recurrence during surveillance. In the advanced disease setting, data highlight the potential of ctDNA levels as a prognostic marker and as an early indicator of treatment response. ctDNA assessment can complement standard tissue-based testing for molecular characterisation, with the added ability to monitor emerging mutations under the selective pressure of targeted therapy. Here we provide an overview of the evidence supporting the use of ctDNA in colorectal cancer, the studies underway to address some of the outstanding questions, and the barriers to widespread clinical uptake.
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Affiliation(s)
- Matthew Loft
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia; Department of Medical Oncology, Western Health, Footscray, VIC, Australia
| | - Yat Hang To
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia; Department of Medical Oncology, Peter MacCallum Cancer Centre, Parkville, VIC, Australia
| | - Peter Gibbs
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia; Department of Medical Oncology, Western Health, Footscray, VIC, Australia
| | - Jeanne Tie
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia; Department of Medical Oncology, Peter MacCallum Cancer Centre, Parkville, VIC, Australia; Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia.
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5
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Wang XY, Chen JH. ASO Author Refections: Early ctDNA Dynamics Outperform Conventional Tumor Markers in Predicting Neoadjuvant Therapy Response and Recurrence in Colorectal Liver Metastases. Ann Surg Oncol 2023; 30:5264-5265. [PMID: 37219652 DOI: 10.1245/s10434-023-13626-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 04/25/2023] [Indexed: 05/24/2023]
Affiliation(s)
- Xiang-Yu Wang
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Jin-Hong Chen
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China.
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Zhong WX, Wei XF. Coexistence of anaplastic lymphoma kinase rearrangement in lung adenocarcinoma harbouring epidermal growth factor receptor mutation: A single-center study. World J Clin Cases 2022; 10:12164-12174. [PMID: 36483819 PMCID: PMC9724548 DOI: 10.12998/wjcc.v10.i33.12164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 10/04/2022] [Accepted: 10/24/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Accumulating evidences confirm that epidermal growth factor receptor (EGFR) mutation and anaplastic lymphoma kinase (ALK) rearrangement have coexisted in lung adenocarcinoma (LUAD). However, Its biological mechanism, clinicopathological features, and optimization of targeted drugs have not yet been completely elucidated.
AIM To explore the clinical profile of LUAD patients with co-mutations of EGFR and ALK genes, with hopes of scientifically guiding similar patients towards selected, targeted drugs.
METHODS Two hundred and thirty-seven LUAD patients were enrolled. EGFR mutations were detected by the amplification refractory mutation system-peptide nucleic acid technique, while the expression of ALK rearrangement was screened by the 5′/3′ imbalance strategy for reverse transcription followed by quantitative polymerase chain reaction analysis. The clinicopathological features of these patients were analysed retrospectively, and the follow-up data were collected.
RESULTS There were six cases with co-mutations of EGFR and ALK genes, which were more common in women, non-smoking and stage IV LUAD patients with bone metastasis, hence a positive rate of 2.53% (6/237). EGFR-tyrosine kinase inhibitors (EGFR-TKIs) were their preferred drugs for targeted therapy in these patients, with progression-free survival ranging from two months to six months.
CONCLUSION In Gannan region, the positive rate of co-mutations of EGFR and ALK genes in LUAD patients is relatively high, and the co-mutations are more common in women, non-smoking and stage IV patients with bone metastasis. These patients prefer EGFR-TKIs as their preferred targeted drugs, but the therapeutic effect is not good. EGFR/ALK dual-TKIs may be more effective targeted drugs, which needs further study.
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Affiliation(s)
- Wei-Xiang Zhong
- Department of Thoracic Surgery, First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, Jiangxi Province, China
- First Clinical Medical College, Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Xi-Feng Wei
- Department of Outpatient, Ganzhou Maternity and Child Health Hospital, Ganzhou 341000, Jiangxi Province, China
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7
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Callesen LB, Hamfjord J, Boysen AK, Pallisgaard N, Guren TK, Kure EH, Spindler KLG. Circulating tumour DNA and its clinical utility in predicting treatment response or survival in patients with metastatic colorectal cancer: a systematic review and meta-analysis. Br J Cancer 2022; 127:500-513. [PMID: 35440666 PMCID: PMC9345951 DOI: 10.1038/s41416-022-01816-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 03/29/2022] [Accepted: 03/31/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND We investigate the current knowledge on circulating tumour DNA (ctDNA) and its clinical utility in predicting outcomes in patients with metastatic colorectal cancer (mCRC). METHODS PubMed, Embase, Cochrane Database of Systematic Reviews and Cochrane Central Register of Controlled Trials were searched. Last search 16/12/2020. We included studies on patients with mCRC reporting the predictive or prognostic value of ctDNA. We performed separate random-effects meta-analyses to investigate if baseline ctDNA and early changes in ctDNA levels during treatment were associated with survival. The risk of bias was assessed according to the Quality in Prognosis Studies tool. RESULTS Seventy-one studies were included with 6930 patients. Twenty-four studies were included in meta-analyses. High baseline ctDNA level was associated with short progression-free survival (PFS) (HR = 2.2; 95% CI 1.8-2.8; n = 509) and overall survival (OS) (HR = 2.4; 95% CI 1.9-3.1; n = 1336). A small or no early decrease in ctDNA levels during treatment was associated with short PFS (HR = 3.0; 95% CI 2.2-4.2; n = 479) and OS (HR = 2.8; 95% CI 2.1-3.9; n = 583). Results on clonal evolution and lead-time were inconsistent. A majority of included studies (n = 50/71) had high risk of bias in at least one domain. CONCLUSIONS Plasma ctDNA is a strong prognostic biomarker in mCRC. However, true clinical utility is lacking.
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Affiliation(s)
- Louise B Callesen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark.
- Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark.
| | - Julian Hamfjord
- Department of Oncology, Oslo University Hospital, Oslo, Norway
- Department of Cancer Genetics, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Anders K Boysen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Niels Pallisgaard
- Department of Pathology, Zealand University Hospital, Roskilde, Denmark
| | - Tormod K Guren
- Department of Oncology, Oslo University Hospital, Oslo, Norway
| | - Elin H Kure
- Department of Cancer Genetics, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
- Department of Natural Sciences and Environmental Health, Faculty of Technology, Natural Sciences and Maritime Sciences, University of South-Eastern Norway, Campus Bø, Bø, Norway
| | - Karen-Lise G Spindler
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
- Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
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Yaung SJ, Woestmann C, Ju C, Ma XM, Gattam S, Zhou Y, Xi L, Pal S, Balasubramanyam A, Tikoo N, Heussel CP, Thomas M, Kriegsmann M, Meister M, Schneider MA, Herth FJ, Wehnl B, Diehn M, Alizadeh AA, Palma JF, Muley T. Early Assessment of Chemotherapy Response in Advanced Non-Small Cell Lung Cancer with Circulating Tumor DNA. Cancers (Basel) 2022; 14:cancers14102479. [PMID: 35626082 PMCID: PMC9139958 DOI: 10.3390/cancers14102479] [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: 04/22/2022] [Revised: 05/12/2022] [Accepted: 05/15/2022] [Indexed: 11/16/2022] Open
Abstract
Monitoring treatment efficacy early during therapy could enable a change in treatment to improve patient outcomes. We report an early assessment of response to treatment in advanced NSCLC using a plasma-only strategy to measure changes in ctDNA levels after one cycle of chemotherapy. Plasma samples were collected from 92 patients with Stage IIIB-IV NSCLC treated with first-line chemo- or chemoradiation therapies in an observational, prospective study. Retrospective ctDNA analysis was performed using next-generation sequencing with a targeted 198-kb panel designed for lung cancer surveillance and monitoring. We assessed whether changes in ctDNA levels after one or two cycles of treatment were associated with clinical outcomes. Subjects with ≤50% decrease in ctDNA level after one cycle of chemotherapy had a lower 6-month progression-free survival rate (33% vs. 58%, HR 2.3, 95% CI 1.2 to 4.2, log-rank p = 0.009) and a lower 12-month overall survival rate (25% vs. 70%, HR 4.3, 95% CI 2.2 to 9.7, log-rank p < 0.001). Subjects with ≤50% decrease in ctDNA level after two cycles of chemotherapy also had shorter survival. Using non-invasive liquid biopsies to measure early changes in ctDNA levels in response to chemotherapy may help identify non-responders before standard-of-care imaging in advanced NSCLC.
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Affiliation(s)
- Stephanie J. Yaung
- Roche Sequencing Solutions, Inc., Pleasanton, CA 94588, USA; (X.M.M.); (L.X.); (J.F.P.)
- Correspondence: ; Tel.: +1-925-523-8824
| | | | - Christine Ju
- Roche Molecular Systems, Inc., Pleasanton, CA 94588, USA; (C.J.); (S.G.); (Y.Z.); (S.P.); (A.B.)
| | - Xiaoju Max Ma
- Roche Sequencing Solutions, Inc., Pleasanton, CA 94588, USA; (X.M.M.); (L.X.); (J.F.P.)
| | - Sandeep Gattam
- Roche Molecular Systems, Inc., Pleasanton, CA 94588, USA; (C.J.); (S.G.); (Y.Z.); (S.P.); (A.B.)
| | - Yiyong Zhou
- Roche Molecular Systems, Inc., Pleasanton, CA 94588, USA; (C.J.); (S.G.); (Y.Z.); (S.P.); (A.B.)
| | - Liu Xi
- Roche Sequencing Solutions, Inc., Pleasanton, CA 94588, USA; (X.M.M.); (L.X.); (J.F.P.)
| | - Subrata Pal
- Roche Molecular Systems, Inc., Pleasanton, CA 94588, USA; (C.J.); (S.G.); (Y.Z.); (S.P.); (A.B.)
| | - Aarthi Balasubramanyam
- Roche Molecular Systems, Inc., Pleasanton, CA 94588, USA; (C.J.); (S.G.); (Y.Z.); (S.P.); (A.B.)
| | - Nalin Tikoo
- Alector, Inc., South San Francisco, CA 94080, USA;
| | - Claus Peter Heussel
- Diagnostic and Interventional Radiology with Nuclear Medicine, Thoraxklinik, University Hospital, 69126 Heidelberg, Germany;
- Diagnostic and Interventional Radiology, University Hospital, 69120 Heidelberg, Germany
- Translational Lung Research Centre (TLRC) Heidelberg, Member of the German Centre for Lung Research (DZL), 69120 Heidelberg, Germany; (M.T.); (M.M.); (M.A.S.); (F.J.H.); (T.M.)
| | - Michael Thomas
- Translational Lung Research Centre (TLRC) Heidelberg, Member of the German Centre for Lung Research (DZL), 69120 Heidelberg, Germany; (M.T.); (M.M.); (M.A.S.); (F.J.H.); (T.M.)
- Translational Research Unit, Thoraxklinik at Heidelberg University Hospital, 69126 Heidelberg, Germany
| | - Mark Kriegsmann
- Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany;
| | - Michael Meister
- Translational Lung Research Centre (TLRC) Heidelberg, Member of the German Centre for Lung Research (DZL), 69120 Heidelberg, Germany; (M.T.); (M.M.); (M.A.S.); (F.J.H.); (T.M.)
- Translational Research Unit, Thoraxklinik at Heidelberg University Hospital, 69126 Heidelberg, Germany
| | - Marc A. Schneider
- Translational Lung Research Centre (TLRC) Heidelberg, Member of the German Centre for Lung Research (DZL), 69120 Heidelberg, Germany; (M.T.); (M.M.); (M.A.S.); (F.J.H.); (T.M.)
- Translational Research Unit, Thoraxklinik at Heidelberg University Hospital, 69126 Heidelberg, Germany
| | - Felix J. Herth
- Translational Lung Research Centre (TLRC) Heidelberg, Member of the German Centre for Lung Research (DZL), 69120 Heidelberg, Germany; (M.T.); (M.M.); (M.A.S.); (F.J.H.); (T.M.)
- Translational Research Unit, Thoraxklinik at Heidelberg University Hospital, 69126 Heidelberg, Germany
| | - Birgit Wehnl
- Roche Diagnostics GmbH, 82377 Penzberg, Germany;
| | - Maximilian Diehn
- Stanford Cancer Institute, Stanford University, Stanford, CA 94305, USA; (M.D.); (A.A.A.)
| | - Ash A. Alizadeh
- Stanford Cancer Institute, Stanford University, Stanford, CA 94305, USA; (M.D.); (A.A.A.)
| | - John F. Palma
- Roche Sequencing Solutions, Inc., Pleasanton, CA 94588, USA; (X.M.M.); (L.X.); (J.F.P.)
| | - Thomas Muley
- Translational Lung Research Centre (TLRC) Heidelberg, Member of the German Centre for Lung Research (DZL), 69120 Heidelberg, Germany; (M.T.); (M.M.); (M.A.S.); (F.J.H.); (T.M.)
- Translational Research Unit, Thoraxklinik at Heidelberg University Hospital, 69126 Heidelberg, Germany
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Shi M, Yuan H, Ji J, Zhang S, Li Q, Chen Y, Gong X, Zhu Z, Zhang J. Mutational landscape of circulating tumor DNA identifies distinct molecular features associated with therapeutic response in patients with metastatic colorectal cancer. Ther Adv Med Oncol 2022; 14:17588359211070643. [PMID: 35096147 PMCID: PMC8793119 DOI: 10.1177/17588359211070643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 12/13/2021] [Indexed: 01/08/2023] Open
Abstract
Background: We investigated the mutational landscape of circulating tumor DNA (ctDNA) in predicting tumor response to first-line treatment in patients with metastatic colorectal cancer (mCRC). Methods: We included 41 patients with initially unresectable mCRC, treated with 5-fluorouracil/leucovorin/oxaliplatin (FOLFOX)/5-fluorouracil/leucovorin/irinotecan (FOLFIRI) with/without bevacizumab (Bev)/cetuximab (Cet). Blood samples were prospectively collected at two timepoints: at baseline and after four cycles of first-line treatment. Mutational status of 1086 genes were studied in ctDNA by targeted next-generation sequencing (NGS). Molecular mutational burden (MMB) was defined as mean mutation frequency among obtained mutations for each gene. To evaluate the association between molecular characteristics of cfDNA and therapeutic response better, we divided these patients into MMB-high and MMB-low group according to the median value of MMB (0.3). Results: Among the 41 enrolled patients, alterations of six genes ( TRIM24, SPEN, RNF43, PRKAR1A, KRAS, and KDM5 C) were found at baseline. Baseline MMB of six genes was significantly lower in partial response (PR)/stable disease (SD) patients than progression disease (PD) patients ( p = 0.0012). Further analysis demonstrated that genomic profiling of ctDNA from pretreatment blood samples was significantly different between PR/SD (non-PD) group and PD group. By comparing the baseline levels of KRAS MMB in the two subgroups, we found that PD cases were all MMB-high, whereas non-PD cases were mainly in MMB-low subgroup. Furthermore, patients with low-KRAS MMB had superior response rate, significantly longer progression-free survival (PFS) and longer overall survival (OS) than high-KRAS MMB group. Conclusions: This prospective and serial genomic profiling study revealed the utility of ctDNA in predicting clinical outcomes in mCRC patients under first-line treatment. Levels of KRAS MMB might aid in monitoring therapeutic efficacy in mCRC patients at pretreatment/after four cycles of first-line treatment.
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Affiliation(s)
- Min Shi
- Department of Oncology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hong Yuan
- Department of Oncology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun Ji
- Department of Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shouwei Zhang
- Genecast Biotechnology Co., Ltd, Wuxi City, Jiangsu, China
| | - Qingyuan Li
- Genecast Biotechnology Co., Ltd, Wuxi City, Jiangsu, China
| | - Yawei Chen
- Genecast Biotechnology Co., Ltd, Wuxi City, Jiangsu, China
| | - Xiaoli Gong
- Genecast Biotechnology Co., Ltd, Wuxi City, Jiangsu, China
| | - Zhenggang Zhu
- Department of Oncology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, ChinaDepartment of Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun Zhang
- Department of Oncology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, No. 197 Ruijin er Road, Shanghai 200025, China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University, Shanghai, China
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10
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Zou W, Yaung SJ, Fuhlbrück F, Ballinger M, Peters E, Palma JF, Shames DS, Gandara D, Jiang Y, Patil NS. ctDNA Predicts Overall Survival in Patients With NSCLC Treated With PD-L1 Blockade or With Chemotherapy. JCO Precis Oncol 2022; 5:827-838. [PMID: 34994614 DOI: 10.1200/po.21.00057] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
PURPOSE Identification of predictors for overall survival (OS) allows timely detection of clinical efficacy signals and therefore facilitates treatment decisions. We assessed the association between circulating tumor DNA (ctDNA) metrics and the primary end point of OS in a subset of previously treated patients with locally advanced or metastatic non-small-cell lung cancer, who underwent atezolizumab or docetaxel treatment in the open-label randomized phase III OAK trial. MATERIALS AND METHODS Plasma from 94 patients at baseline and at subsequent cycles of therapy every 3 weeks was analyzed retrospectively for ctDNA. ctDNA was measured by allele frequency and mutant molecules per milliliter (MMPM). Concordance between various per-sample metrics and clinical outcome were assessed using C index. RESULTS Of all the ctDNA metrics tested, the association of median MMPM at 6 weeks with OS in patients treated with atezolizumab or docetaxel had a C index > 0.7. The OS hazard ratios relative to high ctDNA above median MMPM within each arm were 0.28 (95% CI, 0.11 to 0.75) for atezolizumab and 0.19 (95% CI, 0.08 to 0.48) for docetaxel. For patients who had ctDNA median MMPM levels of < 4.79, the median survival time was more than 17 months in docetaxel-treated patients and the median survival time was not reached in the atezolizumab-treated patients. CONCLUSION ctDNA MMPM levels measured at 6 weeks post-treatment are associated with OS in advanced non-small-cell lung cancer. Our results suggest that ctDNA has the potential for a noninvasive early liquid biopsy predictor for OS that warrants further studies to demonstrate its utility in clinical development.
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Affiliation(s)
- Wei Zou
- Genentech, South San Francisco, CA
| | | | | | | | | | | | | | | | - Yuqiu Jiang
- Roche Sequencing Solutions, Inc, Pleasanton, CA
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11
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Benavides M, Gómez-España A, García-Alfonso P, González CG, Viéitez JM, Rivera F, Safont MJ, Abad A, Sastre J, Valladares-Ayerbes M, Carrato A, González-Flores E, Robles L, Salud A, Alonso-Orduña V, Montagut C, Asensio E, Díaz-Rubio E, Aranda E. Upfront primary tumour resection and survival in synchronous metastatic colorectal cancer according to primary tumour location and RAS status: Pooled analysis of the Spanish Cooperative Group for the Treatment of Digestive Tumours (TTD). Eur J Surg Oncol 2021; 48:1123-1132. [PMID: 34872775 DOI: 10.1016/j.ejso.2021.11.122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 09/14/2021] [Accepted: 11/17/2021] [Indexed: 12/30/2022] Open
Abstract
INTRODUCTION Retrospective studies and meta-analyses suggest that upfront primary tumour resection (UPTR) confers a survival benefit in patients with asymptomatic unresectable metastatic colorectal cancer (mCRC) undergoing chemotherapy, however a consensus of its role in routine clinical practice in the current era of targeted therapies is lacking. This retrospective study aimed to analyse the survival benefit of UPTR in terms of tumour location and mutational status, in patients with synchronous mCRC receiving chemotherapy and targeted therapy. PATIENTS AND METHODS Survival was analysed in a pooled cohort of synchronous mCRC patients treated with a first-line anti-VEGF or anti-EGFR inhibitor in seven trials of the Spanish TTD group, according to UPTR, tumour-sidedness and mutational profiling. RESULTS Of 1334 eligible patients, 642 (48%) had undergone UPTR. UPTR was associated with significantly longer overall survival (OS; 25.0 vs 20.3 months; HR 1.30, 95%CI 1.15-1.48; p < 0.0001). UPTR was associated with significant OS benefit in both left-sided (HR 1.38, 95%CI 1.13-1.69; p = 0.002) and right-sided (HR 1.39, 95%CI 1.00-1.94; p = 0.049) tumours, RASwt (HR 1.29, 95%CI 1.05-1.60; p = 0.016) and BRAFwt (HR 1.49, 95%CI 1.21-1.84; p = 0.0002) tumours, and treatment with anti-EGFRs (HR 1.47, 95%CI 1.13-1.92; p = 0.004) and anti-VEGFs (HR 1.25, 95%CI 1.08-1.44; p = 0.003). Multivariate analysis identified number of metastatic sites, RAS status, primary tumour location and UPTR as independent prognostic factors for OS. CONCLUSION Considering the selection bias inherent to this study, our results support UPTR before first-line anti-EGFR or anti-VEGF targeted therapy in right and left-sided asymptomatic unresectable synchronous mCRC patients. RAS/BRAF mutational status may also influence UPTR function.
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Affiliation(s)
- Manuel Benavides
- UGC Intercentros de Oncología Médica, Hospitales Universitarios Regional y Virgen de la Victoria, IBIMA, Málaga, Spain.
| | - Auxiliadora Gómez-España
- Department of Medical Oncology, IMIBIC, Universidad de Córdoba, CIBERONC, Instituto de Salud Carlos III, Hospital Universitario Reina Sofía, Córdoba, Spain
| | - Pilar García-Alfonso
- Department of Medical Oncology, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - Cristina García González
- UGC Intercentros de Oncología Médica, Hospitales Universitarios Regional y Virgen de la Victoria, IBIMA, Málaga, Spain
| | - Jose María Viéitez
- Department of Medical Oncology, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Fernando Rivera
- Department of Medical Oncology, University Hospital Marqués de Valdecilla, IDIVAL, Santander, Spain
| | - María José Safont
- Department of Medical Oncology, Hospital General Universitario Valencia, Universidad de Valencia, CIBERONC, Valencia, Spain
| | - Albert Abad
- Department of Medical Oncology, Instituto Oncológico Dr. Rosell, Barcelona, Spain
| | - Javier Sastre
- Department of Medical Oncology, Hospital Clínico San Carlos, Instituto de Investigación Hospital Clínico San Carlos (IdISSC), University Complutense, CIBERONC, Madrid, Spain
| | | | - Alfredo Carrato
- Department of Medical Oncology, IRYCIS, CIBERONC, Alcalá University, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | | | - Luis Robles
- Department of Medical Oncology, Hospital 12 de Octubre, Madrid, Spain
| | - Antonieta Salud
- Department of Medical Oncology, Hospital de Lleida Arnau de Vilanova, Lérida, Spain
| | - Vicente Alonso-Orduña
- Department of Medical Oncology, Hospital Universitario Miguel Servet, Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
| | - Clara Montagut
- Department of Medical Oncology, Hospital del Mar Medical Research Institute, CIBERONC, Barcelona, Spain
| | - Elena Asensio
- Department of Medical Oncology, Hospital General Universitario de Elche, Alicante, Spain
| | - Eduardo Díaz-Rubio
- Department of Medical Oncology, Hospital Clínico San Carlos, Instituto de Investigación Hospital Clínico San Carlos (IdISSC), University Complutense, CIBERONC, Madrid, Spain
| | - Enrique Aranda
- Department of Medical Oncology, IMIBIC, Universidad de Córdoba, CIBERONC, Instituto de Salud Carlos III, Hospital Universitario Reina Sofía, Córdoba, Spain
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12
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Fujisawa R, Iwaya T, Endo F, Idogawa M, Sasaki N, Hiraki H, Tange S, Hirano T, Koizumi Y, Abe M, Takahashi T, Yaegashi M, Akiyama Y, Masuda M, Sasaki A, Takahashi F, Sasaki Y, Tokino T, Nishizuka SS. Early dynamics of circulating tumor DNA predict chemotherapy responses for patients with esophageal cancer. Carcinogenesis 2021; 42:1239-1249. [PMID: 34559206 DOI: 10.1093/carcin/bgab088] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 09/23/2021] [Indexed: 01/01/2023] Open
Abstract
We investigated whether early circulating tumor DNA (ctDNA) changes, measured using digital PCR (dPCR), can predict later chemotherapy responses in esophageal squamous cell cancer (ESCC). We compared the dynamics of ctDNA and tumor volumes during chemotherapy in 42 ESCC. The accuracy of predictions of later chemotherapy responses was evaluated by the ratio of the variant allele frequency of ctDNA (post-/pre-ctDNA) and the total tumor volume (post-/pre-volume) before and after an initial chemotherapy cycle using a receiver-operating characteristic curve analysis. Total positive and negative objective responses (ORs) were defined as either >50 or ≤50% reductions, respectively, in the total tumor volume at the end of first-line chemotherapy. Mutation screening of 43 tumors from 42 patients revealed 96 mutations. The pretreatment dPCR-ctDNA data were informative in 38 patients, using 70 selected mutations (1-3 per patient). The areas under the curve (AUCs) for the post-/pre-volume and post-/pre-ctDNA levels used in predicting the total OR were 0.85 and 0.88, respectively. The optimal cutoff value of post-/pre-ctDNA was 0.13. In 20 patients with post-/pre-volume ≥50%, the total OR could be predicted by the post-/pre-ctDNA with high accuracy; the AUC by post-/pre-ctDNA was higher than that by post-/pre-volume (0.85 versus 0.76, respectively). Patients with low post-/pre-ctDNA (n = 18) had a significantly better overall survival rate than those with high post-/pre-ctDNA (n = 20; P = 0.03). Early ctDNA changes after an initial cycle of chemotherapy predict later responses to treatment with high accuracy in ESCC patients.
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Affiliation(s)
- Ryosuke Fujisawa
- Department of Surgery, Iwate Medical University School of Medicine, Yahaba, Iwate, Japan.,Molecular Therapeutics Laboratory, Department of Surgery, Iwate Medical University School of Medicine, Yahaba, Iwate, Japan
| | - Takeshi Iwaya
- Department of Surgery, Iwate Medical University School of Medicine, Yahaba, Iwate, Japan.,Molecular Therapeutics Laboratory, Department of Surgery, Iwate Medical University School of Medicine, Yahaba, Iwate, Japan
| | - Fumitaka Endo
- Department of Surgery, Iwate Medical University School of Medicine, Yahaba, Iwate, Japan
| | - Masashi Idogawa
- Medical Genome Sciences, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan
| | - Noriyuki Sasaki
- Department of Surgery, Iwate Medical University School of Medicine, Yahaba, Iwate, Japan.,Division of Biomedical Research & Development, Iwate Medical University Institute for Biomedical Sciences, Yahaba, Iwate, Japan
| | - Hayato Hiraki
- Division of Biomedical Research & Development, Iwate Medical University Institute for Biomedical Sciences, Yahaba, Iwate, Japan
| | - Shoichiro Tange
- Medical Genome Sciences, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan
| | - Tomomi Hirano
- Medical Genome Sciences, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan
| | - Yuka Koizumi
- Department of Surgery, Iwate Medical University School of Medicine, Yahaba, Iwate, Japan.,Division of Biomedical Research & Development, Iwate Medical University Institute for Biomedical Sciences, Yahaba, Iwate, Japan
| | - Masakazu Abe
- Division of Biomedical Research & Development, Iwate Medical University Institute for Biomedical Sciences, Yahaba, Iwate, Japan.,Department of Urology, Iwate Medical University School of Medicine, Yahaba, Iwate, Japan
| | - Tomoko Takahashi
- Department of Surgery, Iwate Medical University School of Medicine, Yahaba, Iwate, Japan.,Molecular Therapeutics Laboratory, Department of Surgery, Iwate Medical University School of Medicine, Yahaba, Iwate, Japan
| | - Mizunori Yaegashi
- Department of Surgery, Iwate Medical University School of Medicine, Yahaba, Iwate, Japan.,Molecular Therapeutics Laboratory, Department of Surgery, Iwate Medical University School of Medicine, Yahaba, Iwate, Japan
| | - Yuji Akiyama
- Department of Surgery, Iwate Medical University School of Medicine, Yahaba, Iwate, Japan
| | - Mari Masuda
- Division of Cellular Signaling, National Cancer Center Research Institute, Tokyo, Japan
| | - Akira Sasaki
- Department of Surgery, Iwate Medical University School of Medicine, Yahaba, Iwate, Japan
| | - Fumiaki Takahashi
- Division of Medical Engineering, Department of Information Science, Iwate Medical University, Yahaba, Iwate, Japan
| | - Yasushi Sasaki
- Medical Genome Sciences, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan.,Biology Division, Department of Liberal Arts and Sciences, Center for Medical Education, Sapporo Medical University, Sapporo, Japan
| | - Takashi Tokino
- Medical Genome Sciences, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan
| | - Satoshi S Nishizuka
- Division of Biomedical Research & Development, Iwate Medical University Institute for Biomedical Sciences, Yahaba, Iwate, Japan
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13
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Imyanitov E, Kuligina E. Molecular testing for colorectal cancer: Clinical applications. World J Gastrointest Oncol 2021; 13:1288-1301. [PMID: 34721767 PMCID: PMC8529925 DOI: 10.4251/wjgo.v13.i10.1288] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 06/19/2021] [Accepted: 08/24/2021] [Indexed: 02/06/2023] Open
Abstract
Molecular genetic analysis is an integral part of colorectal cancer (CRC) management. The choice of systemic therapy for CRC is largely based on the results of tumor molecular testing. Evaluation of the KRAS and NRAS gene status is mandatory for consideration of anti-epidermal growth factor receptor (EGFR) therapy. Tumors with the BRAF V600E substitution are characterized by aggressive behaviour, may require intensified cytotoxic regimens and benefit from combined BRAF and EGFR inhibition. The inactivation of DNA mismatch repair (MMR), or MUTYH gene, or DNA polymerase epsilon results in excessive tumor mutational burden; these CRCs are highly antigenic and therefore sensitive to immune checkpoint inhibitors. Some CRCs are characterized by overexpression of the HER2 oncogene and respond to the appropriate targeted therapy. There are CRCs with clinical signs of hereditary predisposition to this disease, which require germline genetic testing. Liquid biopsy is an emerging technology that has the potential to assist CRC screening, control the efficacy of surgical intervention and guide disease monitoring. The landscape of CRC molecular diagnosis is currently undergoing profound changes due to the increasing use of next generation sequencing.
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Affiliation(s)
- Evgeny Imyanitov
- Department of Tumor Biology, N.N. Petrov Institute of Oncology, St.-Petersburg 197758, Russia
- Department of Medical Genetics, St.-Petersburg Pediatric Medical University, Saint-Petersburg 194100, Russia
- Department of Oncology, I.I. Mechnikov North-Western Medical University, Saint-Petersburg 191015, Russia
| | - Ekaterina Kuligina
- Department of Tumor Biology, N.N. Petrov Institute of Oncology, St.-Petersburg 197758, Russia
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14
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Clinical Applications of Minimal Residual Disease Assessments by Tumor-Informed and Tumor-Uninformed Circulating Tumor DNA in Colorectal Cancer. Cancers (Basel) 2021; 13:cancers13184547. [PMID: 34572774 PMCID: PMC8471730 DOI: 10.3390/cancers13184547] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/08/2021] [Accepted: 09/08/2021] [Indexed: 12/20/2022] Open
Abstract
Simple Summary Circulating tumor DNA, or ctDNA, are fragments of tumor DNA that can be detected in the blood of patients with colorectal cancer. Measuring ctDNA levels in the blood has shown the potential to provide important information that can be helpful in the clinical care of patients with colorectal cancer. For example, in patients with colon cancer that has been removed by surgery, measuring ctDNA in the blood can predict the likelihood of cancer recurrence, while in those with metastatic colorectal cancer, measuring ctDNA can inform the clinician whether chemotherapy is effective at earlier timepoints than currently available tests. In this review, we discuss the results from ongoing studies describing the utility of ctDNA measurements across all stages of colorectal cancer. We also discuss the various clinical scenarios that ctDNA may have the most immediate impact in colorectal cancer management. Abstract Emerging data suggest that circulating tumor DNA (ctDNA) can detect colorectal cancer (CRC)-specific signals across both non-metastatic and metastatic settings. With the development of multiple platforms, including tumor-informed and tumor-agnostic ctDNA assays and demonstration of their provocative analytic performance to detect minimal residual disease, there are now ongoing, phase III randomized clinical trials to evaluate their role in the management paradigm of CRC. In this review, we highlight landmark studies that have formed the basis for ongoing studies on the clinically applicability of plasma ctDNA assays in resected, stage I–III CRC and metastatic CRC. We discuss clinical settings by which ctDNA may have the most immediate impact in routine clinical practice. These include the potential for ctDNA to (1) guide surveillance and intensification or de-intensification strategies of adjuvant therapy in resected, stage I–III CRC, (2) predict treatment response to neoadjuvant therapy in locally advanced rectal cancer inclusive of total neoadjuvant therapy (TNT), and (3) predict response to systemic and surgical therapies in metastatic disease. We end by considering clinical variables that can influence our ability to reliably interpret ctDNA dynamics in the clinic.
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