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Yokoi K, Watanabe A, Yokota K, Kojima K, Tanaka T, Kojo K, Miura H, Yamanashi T, Sato T, Yamashita K, Kumamoto Y, Hiki N, Naitoh T. Low skeletal muscle radiodensity is a risk factor for adjuvant chemotherapy discontinuation in colorectal cancer. Int J Clin Oncol 2024; 29:276-285. [PMID: 38286874 DOI: 10.1007/s10147-023-02463-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 12/15/2023] [Indexed: 01/31/2024]
Abstract
BACKGROUND Previously, we reported SMR (skeletal muscle radiodensity) as a potential prognostic marker for colorectal cancer. However, there have been limited studies on the association between SMR and the continuation of adjuvant chemotherapy in colorectal cancer. METHODS In this retrospective study, 143 colorectal cancer patients underwent curative surgery and adjuvant chemotherapy using the CAPOX regimen. Patients' SMRs were measured from preoperative CT images and divided into low (bottom quarter) and high (top three quarters) SMR groups. We compared chemotherapy cycles, capecitabine and oxaliplatin doses, and adverse effects in each group. RESULTS The low SMR group had significantly fewer patients completing adjuvant chemotherapy compared to the high SMR group (44% vs. 68%, P < 0.01). Capecitabine and oxaliplatin doses were also lower in the low SMR group. Incidences of Grade 2 or Grade 3 adverse effects did not differ between groups, but treatment discontinuation due to adverse effects was significantly higher in the low SMR group. Logistic regression analysis revealed Stage III disease (odds ratio 18.09, 95% CI 1.41-231.55) and low SMR (odds ratio 3.26, 95% CI 1.11-9.56) as factors associated with unsuccessful treatment completion. Additionally, a higher proportion of low SMR patients received fewer than 2 cycles of chemotherapy (50% vs. 12%). CONCLUSION The low SMR group showed higher treatment incompletion rates and received lower drug doses during adjuvant chemotherapy. Low SMR independently contributed to treatment non-completion in colorectal cancer patients.
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Affiliation(s)
- Keigo Yokoi
- Department of Lower Gastrointestinal Surgery, Kitasato University School of Medicine, 252-0374, 1-15-1, Kitasato, Minami-Ku, Sagamihara, Kanagawa, Japan
| | - Akiko Watanabe
- Department of Lower Gastrointestinal Surgery, Kitasato University School of Medicine, 252-0374, 1-15-1, Kitasato, Minami-Ku, Sagamihara, Kanagawa, Japan
| | - Kazuko Yokota
- Department of Lower Gastrointestinal Surgery, Kitasato University School of Medicine, 252-0374, 1-15-1, Kitasato, Minami-Ku, Sagamihara, Kanagawa, Japan
| | - Keita Kojima
- Department of Lower Gastrointestinal Surgery, Kitasato University School of Medicine, 252-0374, 1-15-1, Kitasato, Minami-Ku, Sagamihara, Kanagawa, Japan
| | - Toshimichi Tanaka
- Department of Lower Gastrointestinal Surgery, Kitasato University School of Medicine, 252-0374, 1-15-1, Kitasato, Minami-Ku, Sagamihara, Kanagawa, Japan
| | - Ken Kojo
- Department of Lower Gastrointestinal Surgery, Kitasato University School of Medicine, 252-0374, 1-15-1, Kitasato, Minami-Ku, Sagamihara, Kanagawa, Japan
| | - Hirohisa Miura
- Department of Lower Gastrointestinal Surgery, Kitasato University School of Medicine, 252-0374, 1-15-1, Kitasato, Minami-Ku, Sagamihara, Kanagawa, Japan
| | - Takahiro Yamanashi
- Department of Lower Gastrointestinal Surgery, Kitasato University School of Medicine, 252-0374, 1-15-1, Kitasato, Minami-Ku, Sagamihara, Kanagawa, Japan
| | - Takeo Sato
- Department of Clinical Skills Education, Research and Development Center for Medical Education, Kitasato University School of Medicine, 252-0374, 1-15-1, Kitasato, Minami-Ku, Sagamihara, Kanagawa, Japan
| | - Keishi Yamashita
- Division of Advanced Surgical Oncology, Research and Development Center for New Medical Frontiers, Kitasato University School of Medicine, 252-0374, 1-15-1, Kitasato, Minami-Ku, Sagamihara, Kanagawa, Japan
| | - Yusuke Kumamoto
- Department of General-Pediatric-Hepatobiliary Pancreatic Surgery, Kitasato University School of Medicine, 252-0374, 1-15-1, Kitasato, Minami-Ku, Sagamihara, Kanagawa, Japan
| | - Naoki Hiki
- Department of Upper Gastrointestinal Surgery, Kitasato University School of Medicine, 252-0374, 1-15-1, Kitasato, Minami-Ku, Sagamihara, Kanagawa, Japan
| | - Takeshi Naitoh
- Department of Lower Gastrointestinal Surgery, Kitasato University School of Medicine, 252-0374, 1-15-1, Kitasato, Minami-Ku, Sagamihara, Kanagawa, Japan.
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