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Robinson HR, Messersmith WA, Lentz RW. HER2-Positive Metastatic Colorectal Cancer. Curr Treat Options Oncol 2024; 25:585-604. [PMID: 38539034 DOI: 10.1007/s11864-024-01183-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2024] [Indexed: 04/24/2024]
Abstract
OPINION STATEMENT Targeted treatment strategies are available for human epidermal growth factor receptor 2 (HER2)-positive (amplified and/or overexpressed) metastatic colorectal cancer (mCRC), and HER2 testing is indicated in patients with mCRC. At present, standard of care first-line treatment for those with HER2-positive mCRC remains chemotherapy in combination with epidermal growth factor receptor (EGFR) inhibitors or bevacizumab, depending on RAS/BRAF mutational status and tumor sidedness. HER2-targeted agents should be considered for those with RAS/BRAF wild-type disease in subsequent-line treatment and in first-line treatment for patients not appropriate for intensive therapy. While the choice of anti-HER2 therapy is empiric given lack of head-to-head comparisons, the combination of trastuzumab plus tucatinib has received FDA accelerated approval for use in this setting and is generally the authors' preference. Trastuzumab plus lapatinib, trastuzumab plus pertuzumab, and trastuzumab deruxtecan (T-DXd) also have evidence of efficacy in this setting. As T-DXd has demonstrated activity following treatment with other HER2-targeted regimens and carries an increased risk of high-grade toxicities, the authors favor reserving it for use after progression on prior anti-HER2 therapy. HER2-targeted therapies that inhibit signal transduction appear to have limited activity in those with RAS mutations, including trastuzumab-containing regimens. However, the antibody drug conjugate T-DXd has some data showing efficacy in this setting, and the authors would consider T-DXd in subsequent-line therapy for HER2-positive, RAS-mutated mCRC. Several areas of uncertainty remain regarding how to best utilize HER2-targeted therapies in mCRC. These include the optimal sequence of anti-HER2 therapies with chemotherapy and anti-EGFR therapies, the optimal combination partners for anti-HER2 therapies, and the incorporation of predictive biomarkers to guide use of anti-HER2 therapies. Results of ongoing studies may thus alter the treatment paradigm above in the coming years.
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Affiliation(s)
- Hannah R Robinson
- Division of Medical Oncology, Department of Medicine, University of Colorado School of Medicine, MS 8117, 12801 E. 17Th Avenue, Aurora, CO, 80045, USA
| | - Wells A Messersmith
- Division of Medical Oncology, Department of Medicine, University of Colorado School of Medicine, MS 8117, 12801 E. 17Th Avenue, Aurora, CO, 80045, USA
| | - Robert W Lentz
- Division of Medical Oncology, Department of Medicine, University of Colorado School of Medicine, MS 8117, 12801 E. 17Th Avenue, Aurora, CO, 80045, USA.
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Chang J, Xu M, Wang C, Huang D, Zhang Z, Chen Z, Zhu X, Li W. Dual HER2 Targeted Therapy With Pyrotinib and Trastuzumab in Refractory HER2 Positive Metastatic Colorectal Cancer: A Result From HER2-FUSCC-G Study. Clin Colorectal Cancer 2022; 21:347-353. [PMID: 35941028 DOI: 10.1016/j.clcc.2022.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/29/2022] [Accepted: 07/11/2022] [Indexed: 01/26/2023]
Abstract
BACKGROUND Dual-HER2 targeted therapy has led to a promising antitumor effect in HER2 positive cancers including gastrointestinal cancer. The present data focus on patients with HER2 positive colorectal cancer who received pyrotinib and trastuzumab after failure to standard second-line treatment. METHODS Patients diagnosed of HER2 positive refractory or metastatic colorectal cancer were enrolled to receive trastuzumab in combination with pyrotinib as third-line and beyond therapy. Trastuzumab was given as a loading dose at 8 mg/kg followed by 6mg/kg once every 3 weeks, and oral pyrotinib as 400 mg per day until progression. ORR was set as the primary endpoint. PFS and OS were set as a secondary endpoints. This trial is registered with Clinical Trial.gov, NCT04960943, and is ongoing. RESULTS Between February 2020 to December 2021, 16 patients including 14 with RAS wild-type status were enrolled in this cohort. ORR was 50.0% in the overall population, and 57.1% in RAS wild-type patients. At a median follow-up of 11.2 months, median PFS and OS were 7.53 and 16.8 months, respectively. The RAS/BRAF wild-type patients had prolonged survival (PFS: 7.53 vs. 1.63 months, P = .02; OS: NR vs.4.13 months, P = .001) compared with RAS/BRAF mutant patients. The most common treatment-emergent adverse event (TEAE) reported is diarrhea. Five (31.3%) patients reported grade 3 TEAEs, and no death was reported. CONCLUSIONS Trastuzumab in combination with pyrotinib demonstrated encouraging antitumor activity that translated to prolonged survival benefit in HER2 positive refractory or mCRC patients who are RAS wild-type with acceptable tolerance.
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Affiliation(s)
- Jinjia Chang
- Department of Gastrointestinal Medical Oncology, Fudan University Shanghai Cancer Center; Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Midie Xu
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
| | - Chenchen Wang
- Department of Gastrointestinal Medical Oncology, Fudan University Shanghai Cancer Center; Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Dan Huang
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
| | - Zhe Zhang
- Department of Gastrointestinal Medical Oncology, Fudan University Shanghai Cancer Center; Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Zhiyu Chen
- Department of Gastrointestinal Medical Oncology, Fudan University Shanghai Cancer Center; Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Xiaodong Zhu
- Department of Gastrointestinal Medical Oncology, Fudan University Shanghai Cancer Center; Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
| | - Wenhua Li
- Department of Gastrointestinal Medical Oncology, Fudan University Shanghai Cancer Center; Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
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Valenzuela G, Burotto M, Marcelain K, González-Montero J. Liquid biopsy to detect resistance mutations against anti-epidermal growth factor receptor therapy in metastatic colorectal cancer. World J Gastrointest Oncol 2022; 14:1654-1664. [PMID: 36187383 PMCID: PMC9516650 DOI: 10.4251/wjgo.v14.i9.1654] [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: 03/19/2022] [Revised: 05/19/2022] [Accepted: 08/10/2022] [Indexed: 02/05/2023] Open
Abstract
Colorectal cancer (CRC) is a major cause of mortality worldwide, associated with a steadily growing prevalence. Notably, the identification of KRAS, NRAS, and BRAF mutations has markedly improved targeted CRC therapy by affording treatments directed against the epidermal growth factor receptor (EGFR) and other anti-angiogenic therapies. However, the survival benefit conferred by these therapies remains variable and difficult to predict, owing to the high level of molecular heterogeneity among patients with CRC. Although classification into consensus molecular subtypes could optimize response prediction to targeted therapies, the acquisition of resistance mutations to targeted therapy is, in part, responsible for the lack of response in some patients. However, the acquisition of such mutations can induce challenges in clinical practice. The utility of liquid biopsy to detect resistance mutations against anti-EGFR therapy has recently been described. This approach may constitute a new standard in the decision algorithm for targeted CRC therapy.
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Affiliation(s)
- Guillermo Valenzuela
- Department of Basic and Clinical Oncology, University of Chile, Santiago 8380453, Chile
- Department of Internal Medicine, Hospital del Salvador, Santiago 7500922, Chile
| | - Mauricio Burotto
- Department of Oncology, Bradford-Hill Clinical Research Center, Santiago 8420383, Chile
| | - Katherine Marcelain
- Department of Basic and Clinical Oncology, University of Chile, Santiago 8380453, Chile
| | - Jaime González-Montero
- Department of Basic and Clinical Oncology, University of Chile, Santiago 8380453, Chile
- Department of Oncology, Bradford-Hill Clinical Research Center, Santiago 8420383, Chile
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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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Yu IS, Aubin F, Goodwin R, Loree JM, Mather C, Sheffield BS, Snow S, Gill S. Tumor Biomarker Testing for Metastatic Colorectal Cancer: a Canadian Consensus Practice Guideline. Ther Adv Med Oncol 2022; 14:17588359221111705. [PMID: 35898967 PMCID: PMC9310231 DOI: 10.1177/17588359221111705] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 06/17/2022] [Indexed: 11/17/2022] Open
Abstract
The systemic therapy management of metastatic colorectal cancer (mCRC) has evolved from primarily cytotoxic chemotherapies to now include targeted agents given alone or in combination with chemotherapy, and immune checkpoint inhibitors. A better understanding of the pathogenesis and molecular drivers of colorectal cancer not only aided the development of novel targeted therapies but led to the discovery of tumor mutations which act as predictive biomarkers for therapeutic response. Mutational status of the KRAS gene became the first genomic biomarker to be established as part of standard of care molecular testing, where KRAS mutations within exons 2, 3, and 4 predict a lack of response to anti- epidermal growth factor receptor therapies. Since then, several other biomarkers have become relevant to inform mCRC treatment; however, there are no published Canadian guidelines which reflect the current standards for biomarker testing. This guideline was developed by a pan-Canadian advisory group to provide contemporary, evidence-based recommendations on the minimum acceptable standards for biomarker testing in mCRC, and to describe additional biomarkers for consideration.
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Affiliation(s)
- Irene S. Yu
- Department of Medical Oncology, BC Cancer
Surrey, Surrey, BC, Canada
| | - Francine Aubin
- Division of Hematology and Oncology, Department
of Medicine, Centre Hospitalier de l’Université de Montréal, Montreal, QC,
Canada
| | - Rachel Goodwin
- Division of Medical Oncology, Department of
Medicine, Ottawa Hospital Cancer Centre, Ottawa, ON, Canada
| | - Jonathan M. Loree
- Department of Medical Oncology, BC Cancer
Agency - Vancouver Centre, Vancouver, BC, Canada
| | - Cheryl Mather
- Department of Laboratory Medicine and
Pathology, University of Alberta, Edmonton, AB, Canada
| | - Brandon S. Sheffield
- Division of Advanced Diagnostics, William Osler
Health System, Brampton, ON, Canada
| | - Stephanie Snow
- Department of Medicine, Queen Elizabeth II
Health Sciences Centre, Halifax, NS, Canada
| | - Sharlene Gill
- Department of Medical Oncology, BC Cancer
Agency – Vancouver Centre, 600 W 10th Ave, Vancouver, BC, V5Z 4E6,
Canada
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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: 10] [Impact Index Per Article: 3.3] [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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Abstract
Droplet digital polymerase chain reaction (ddPCR) is a method used to detect and quantify nucleic acids even when present in exceptionally low numbers. While it has proven to be valuable for clinical studies, it has failed to be widely adopted for environmental studies but despite some limitations, ddPCR may represent a better option than classical qPCR for environmental samples. Due to the complexity of the chemical and biological composition of environmental samples, protocols tailored to clinical studies are not appropriate, and results are difficult to interpret. We used environmental DNA samples originating from field studies to determine a protocol for environmental samples. Samples included field soils which had been inoculated with the soil fungus Rhizophagus irregularis (environmental positive control), field soils that had not been inoculated and the targeted fungus was not naturally present (environmental negative control), and root samples from both field categories. To control for the effect of soil inhibitors, we also included DNA samples of an organismal control extracted from pure fungal spores (organismal positive control). Finally, we included a no-template control consisting only of the PCR reaction reagents and nuclease free water instead of template DNA. Using original data, we examined which factors contribute to poor resolution in root and soil samples and propose best practices to ensure accuracy and repeatability. Furthermore, we evaluated manual and automatic threshold determination methods and we propose a novel protocol based on multiple controls that is more appropriate for environmental samples.
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Galarza Fortuna GM, Dvir K. Circulating tumor DNA: Where are we now? A mini review of the literature. World J Clin Oncol 2020; 11:723-731. [PMID: 33033694 PMCID: PMC7522544 DOI: 10.5306/wjco.v11.i9.723] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/31/2020] [Accepted: 09/02/2020] [Indexed: 02/06/2023] Open
Abstract
For many years tissue biopsy has been the primary procedure to establish cancer diagnosis and determine further treatment and prognosis. However, this method has multiple drawbacks, including, to mention some, being an invasive procedure carrying significant risk for fragile patients and allowing only for a "snapshot" of the tumor biology in time. The process of liquid biopsy allows for a minimally invasive procedure that provides molecular information about underlying cancer by analyzing circulating tumor DNA (ctDNA) via next-generation sequencing technology and circulating tumor cells. This paper focuses on describing the basis of ctDNA and its current utilities.
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Affiliation(s)
| | - Kathrin Dvir
- Internal Medicine, Mount Sinai Medical Center, Miami Beach, FL 33140, United States
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Cao H, Liu X, Chen Y, Yang P, Huang T, Song L, Xu R. Circulating Tumor DNA Is Capable of Monitoring the Therapeutic Response and Resistance in Advanced Colorectal Cancer Patients Undergoing Combined Target and Chemotherapy. Front Oncol 2020; 10:466. [PMID: 32318348 PMCID: PMC7154135 DOI: 10.3389/fonc.2020.00466] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 03/16/2020] [Indexed: 01/10/2023] Open
Abstract
Colorectal cancer (CRC) is a highly lethal disease worldwide. The majority of patients receiving targeted therapy or chemotherapy develop drug resistance, while its molecular mechanism remains to be elucidated. The plasma circulating tumor DNA (ctDNA) exhibited the potential in identifying gene variations and monitoring drug resistance in CRC treatment. In this study, we monitored the ctDNA mutational changes in advanced CRC patients underwent first-line therapy with bevacizumab and cetuximab combined with chemotherapy. The mutation spectrum of 43 patients was established by a 605-gene next-generation sequencing (NGS) panel. The baseline measurement shows that genes with the highest mutation frequency were TP53 (74%), APC (58%), KRAS (40%), SYNE1 (33%), LRP1B (23%), TOP1 (23%), and PIK3CA (21%). Mutations in TP53, APC, and KRAS were detected in 29 paired plasma and tissue samples with the consistency of 81, 67, and 42%, respectively. Clinically targetable gene mutations, such as APC, RNF43, SMAD4, BRAD1, KRAS, RAF1, and TP53, were also identified in ctDNA. The overall consistency between ctDNA and tissue samples was 54.6%. Alleviation of mutational burden in BRAF, KRAS, AMER1, and other major driving genes was observed following the first-line therapy. Patients with KRAS and TP53 mutations in tissues appeared to benefit more than the wild-type counterpart. The dynamic change of plasma mutation status was consistent with the tissue tumor burden and was closely correlated with disease progression. In conclusion, ctDNA monitoring is a useful method for molecular genotyping of colorectal cancer patients. Dynamic changes in resistance can be sensitively monitored by gene variation status, which potentially helps to develop treatment strategy.
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Affiliation(s)
- Hua Cao
- Department of Oncology, Shenzhen People's Hospital, The 2nd Clinical Medical School of Ji'nan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Xinyi Liu
- HaploX Biotechnology, Co., Ltd., Shenzhen, China
| | - Yixin Chen
- Department of Oncology, Shenzhen People's Hospital, The 2nd Clinical Medical School of Ji'nan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Pan Yang
- HaploX Biotechnology, Co., Ltd., Shenzhen, China
| | | | - Lele Song
- HaploX Biotechnology, Co., Ltd., Shenzhen, China
| | - Ruilian Xu
- Department of Oncology, Shenzhen People's Hospital, The 2nd Clinical Medical School of Ji'nan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
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