Letter to the Editor
Copyright ©The Author(s) 2022. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastroenterol. Mar 7, 2022; 28(9): 973-975
Published online Mar 7, 2022. doi: 10.3748/wjg.v28.i9.973
Radiomics-clinical nomogram for response to chemotherapy in synchronous liver metastasis of colorectal cancer: Good, but not good enough
Han Yan, Tu-Nan Yu
Han Yan, Department of Colorectal Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
Tu-Nan Yu, Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
Author contributions: All authors helped to prepare this manuscript; Yan H and Yu TN contributed to manuscript writing, drafting conception and design.
Conflict-of-interest statement: All authors declare that there are no conflicts of interest, and there was no fund supporting this manuscript.
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Tu-Nan Yu, MD, PhD, Doctor, Statistician, Surgeon, Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, No. 3 Qingchun East Road, Hangzhou 310016, Zhejiang Province, China. 3314006@zju.edu.cn
Received: October 31, 2021
Peer-review started: October 31, 2021
First decision: December 12, 2021
Revised: January 3, 2022
Accepted: January 29, 2022
Article in press: January 29, 2022
Published online: March 7, 2022
Abstract

There remains a persistent unmet need to detect the disease nonresponse (nonDR) subgroup before adjuvant therapy in synchronous liver metastasis patients with colorectal cancer. Ma’s radiomics-clinical nomogram shows potential for the early detection of nonDR subgroups, but it is not good enough owing to at least three limitaions, which we address in this letter to the editor. First, the study did not explore RAS/BRAF mutations, HER2 amplifications, etc. to complement the current nomogram. Second, the nomogram was not validated in left- and right-sided tumors separately. Third, the most critical factor for determining the success of adjuvant therapy should be resectability rather than tumor size shrinkage, which was used in the study.

Keywords: Synchronous liver metastasis, Colorectal cancer, Radiomics

Core Tip: There remains a persistent unmet need to detect the disease nonresponse subgroup before adjuvant therapy in synchronous liver metastasis patients with colorectal cancer. Ma’s radiomics-clinical nomogram is currently not good enough, as the study did not explore the statuses of certain tumor genes, did not validate the nomogram in left- and right-sided tumors separately, and used tumor size shrinkage rather than resectability to judge the success of adjuvant therapy.