Alice M Couwenberg, Dimitrios N Varvoglis, Brian C Grieb, Corrie A M Marijnen, Kristen K Ciombor, Jose G Guillem
{"title":"New Opportunities for Minimizing Toxicity in Rectal Cancer Management.","authors":"Alice M Couwenberg, Dimitrios N Varvoglis, Brian C Grieb, Corrie A M Marijnen, Kristen K Ciombor, Jose G Guillem","doi":"10.1200/EDBK_389558","DOIUrl":null,"url":null,"abstract":"<p><p>Advances in multimodal management of locally advanced rectal cancer (LARC), consisting of preoperative chemotherapy and/or radiotherapy followed by surgery with or without adjuvant chemotherapy, have improved local disease control and patient survival but are associated with significant risk for acute and long-term morbidity. Recently published trials, evaluating treatment dose intensification via the addition of preoperative induction or consolidation chemotherapy (total neoadjuvant therapy [TNT]), have demonstrated improved tumor response rates while maintaining acceptable toxicity. In addition, TNT has led to an increased number of patients achieving a clinical complete response and thus eligible to pursue a nonoperative, organ-preserving, watch and wait approach, thereby avoiding toxicities associated with surgery, such as bowel dysfunction and stoma-related complications. Ongoing trials using immune checkpoint inhibitors in patients with mismatch repair-deficient tumors suggest that this subgroup of patients with LARC could potentially be treated with immunotherapy alone, sparing them the toxicity associated with preoperative treatment and surgery. However, the majority of rectal cancers are mismatch repair-proficient and less responsive to immune checkpoint inhibitors and require multimodal management. The synergy noted in preclinical studies between immunotherapy and radiotherapy on immunogenic tumor cell death has led to the design of ongoing clinical trials that explore the benefit of combining radiotherapy, chemotherapy, and immunotherapy (mainly of immune checkpoint inhibitors) and aim to increase the number of patients eligible for organ preservation.</p>","PeriodicalId":37969,"journal":{"name":"American Society of Clinical Oncology educational book / ASCO. American Society of Clinical Oncology. Meeting","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10450577/pdf/nihms-1921979.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"American Society of Clinical Oncology educational book / ASCO. American Society of Clinical Oncology. Meeting","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1200/EDBK_389558","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Medicine","Score":null,"Total":0}
引用次数: 0
Abstract
Advances in multimodal management of locally advanced rectal cancer (LARC), consisting of preoperative chemotherapy and/or radiotherapy followed by surgery with or without adjuvant chemotherapy, have improved local disease control and patient survival but are associated with significant risk for acute and long-term morbidity. Recently published trials, evaluating treatment dose intensification via the addition of preoperative induction or consolidation chemotherapy (total neoadjuvant therapy [TNT]), have demonstrated improved tumor response rates while maintaining acceptable toxicity. In addition, TNT has led to an increased number of patients achieving a clinical complete response and thus eligible to pursue a nonoperative, organ-preserving, watch and wait approach, thereby avoiding toxicities associated with surgery, such as bowel dysfunction and stoma-related complications. Ongoing trials using immune checkpoint inhibitors in patients with mismatch repair-deficient tumors suggest that this subgroup of patients with LARC could potentially be treated with immunotherapy alone, sparing them the toxicity associated with preoperative treatment and surgery. However, the majority of rectal cancers are mismatch repair-proficient and less responsive to immune checkpoint inhibitors and require multimodal management. The synergy noted in preclinical studies between immunotherapy and radiotherapy on immunogenic tumor cell death has led to the design of ongoing clinical trials that explore the benefit of combining radiotherapy, chemotherapy, and immunotherapy (mainly of immune checkpoint inhibitors) and aim to increase the number of patients eligible for organ preservation.
期刊介绍:
The Ed Book is a National Library of Medicine–indexed collection of articles written by ASCO Annual Meeting faculty and invited leaders in oncology. Ed Book was launched in 1985 to highlight standards of care and inspire future therapeutic possibilities in oncology. Published annually, each volume highlights the most compelling research and developments across the multidisciplinary fields of oncology and serves as an enduring scholarly resource for all members of the cancer care team long after the Meeting concludes. These articles address issues in the following areas, among others: Immuno-oncology, Surgical, radiation, and medical oncology, Clinical informatics and quality of care, Global health, Survivorship.