Combined Analyses of Circulating Tumor DNA and Immunoscore in Patients With Stage III Colon Cancer: A Post Hoc Analysis of the PRODIGE-GERCOR IDEA-France/HORG-IDEA-Greece Trials.
Julien Taieb, John Souglakos, Ioannis Boukovinas, Antoine Falcoz, Franck Pages, Ippokratis Messaritakis, Jaafar Bennouna, Pascal Artru, Christophe Louvet, Celine Lepere, Jean Francois Emile, Olivier Bouche, Thibault Mazard, Dewi Vernerey, Konstantinos Vogiatzoglou, Maria Tzardi, Shruti Sharma, Minetta C Liu, Himanshu Sethi, Thierry André, Jérome Galon, Pierre Laurent-Puig
{"title":"Combined Analyses of Circulating Tumor DNA and Immunoscore in Patients With Stage III Colon Cancer: A Post Hoc Analysis of the PRODIGE-GERCOR IDEA-France/HORG-IDEA-Greece Trials.","authors":"Julien Taieb, John Souglakos, Ioannis Boukovinas, Antoine Falcoz, Franck Pages, Ippokratis Messaritakis, Jaafar Bennouna, Pascal Artru, Christophe Louvet, Celine Lepere, Jean Francois Emile, Olivier Bouche, Thibault Mazard, Dewi Vernerey, Konstantinos Vogiatzoglou, Maria Tzardi, Shruti Sharma, Minetta C Liu, Himanshu Sethi, Thierry André, Jérome Galon, Pierre Laurent-Puig","doi":"10.1200/JCO.24.00648","DOIUrl":null,"url":null,"abstract":"<p><strong>Purpose: </strong>Immunoscore (IS) and circulating tumor DNA (ctDNA) are two emerging technologies in improving prognostication and tailoring adjuvant treatments in patients resected from a stage III colon cancer (CC). Here, we analyzed the prognostic value of the two biomarkers in patients who participated in the randomized phase III IDEA-France and HORG trials.</p><p><strong>Methods: </strong>Plasma samples were collected after surgery and before adjuvant chemotherapy. ctDNA analysis was performed using a clinically validated, personalized, tumor-informed 16-plex protein chain reaction assay. Multivariable analyses for time to recurrence (TTR; patients without recurrence or death due to CC) and overall survival (OS) were performed using ctDNA and IS results, along with other parameters including treatment duration and disease risk group.</p><p><strong>Results: </strong>Of the 554 patients with available ctDNA results, 445 were ctDNA-negative (80.3%) and 109 were ctDNA-positive (19.7%); baseline characteristics showed more T4/N2 and venous embolism/lymphatic invasion/perineural invasion+ in ctDNA-positive patients. With a median follow-up of 6.7 years, the 2-year TTR rate was 43.5% (95% CI, 34.1 to 52.6) for ctDNA-positive patients and 88.1% (95% CI, 84.7 to 90.8) for ctDNA-negative patients (<i>P</i> < .0001). ctDNA was confirmed as an independent prognostic marker for both TTR (adjusted hazard ratio [adjHR], 5.21 [95% CI, 3.59 to 7.58]; <i>P</i> < .001) and OS (adjHR, 4.84 [95% CI, 3.40 to 6.89]; <i>P</i> < .001). ctDNA remained the most significant prognostic factor irrespective of disease stage, treatment duration, and IS results. IS was not prognostic in ctDNA-positive patients but remained a significant prognostic tool for ctDNA-negative patients.</p><p><strong>Conclusion: </strong>In this combined analysis of two adjuvant trials dedicated to patients with stage III CC after surgery, ctDNA was detectable in 19.7% of the patients and was confirmed as a major independent prognostic biomarker. IS seems to bring additional prognostic information in the 80.3% of patients who are ctDNA-negative.</p>","PeriodicalId":15384,"journal":{"name":"Journal of Clinical Oncology","volume":" ","pages":"1564-1577"},"PeriodicalIF":42.1000,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12054978/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Clinical Oncology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1200/JCO.24.00648","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/2/4 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"ONCOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Purpose: Immunoscore (IS) and circulating tumor DNA (ctDNA) are two emerging technologies in improving prognostication and tailoring adjuvant treatments in patients resected from a stage III colon cancer (CC). Here, we analyzed the prognostic value of the two biomarkers in patients who participated in the randomized phase III IDEA-France and HORG trials.
Methods: Plasma samples were collected after surgery and before adjuvant chemotherapy. ctDNA analysis was performed using a clinically validated, personalized, tumor-informed 16-plex protein chain reaction assay. Multivariable analyses for time to recurrence (TTR; patients without recurrence or death due to CC) and overall survival (OS) were performed using ctDNA and IS results, along with other parameters including treatment duration and disease risk group.
Results: Of the 554 patients with available ctDNA results, 445 were ctDNA-negative (80.3%) and 109 were ctDNA-positive (19.7%); baseline characteristics showed more T4/N2 and venous embolism/lymphatic invasion/perineural invasion+ in ctDNA-positive patients. With a median follow-up of 6.7 years, the 2-year TTR rate was 43.5% (95% CI, 34.1 to 52.6) for ctDNA-positive patients and 88.1% (95% CI, 84.7 to 90.8) for ctDNA-negative patients (P < .0001). ctDNA was confirmed as an independent prognostic marker for both TTR (adjusted hazard ratio [adjHR], 5.21 [95% CI, 3.59 to 7.58]; P < .001) and OS (adjHR, 4.84 [95% CI, 3.40 to 6.89]; P < .001). ctDNA remained the most significant prognostic factor irrespective of disease stage, treatment duration, and IS results. IS was not prognostic in ctDNA-positive patients but remained a significant prognostic tool for ctDNA-negative patients.
Conclusion: In this combined analysis of two adjuvant trials dedicated to patients with stage III CC after surgery, ctDNA was detectable in 19.7% of the patients and was confirmed as a major independent prognostic biomarker. IS seems to bring additional prognostic information in the 80.3% of patients who are ctDNA-negative.
期刊介绍：
The Journal of Clinical Oncology serves its readers as the single most credible, authoritative resource for disseminating significant clinical oncology research. In print and in electronic format, JCO strives to publish the highest quality articles dedicated to clinical research. Original Reports remain the focus of JCO, but this scientific communication is enhanced by appropriately selected Editorials, Commentaries, Reviews, and other work that relate to the care of patients with cancer.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
