Postoperative adjuvant chemotherapy with S-1 versus SOX/XELOX regimens for pStage III gastric cancer: A cohort study.

2020 ◽  
Vol 38 (4_suppl) ◽  
pp. 358-358
Author(s):  
Nobuhiro Tsuchiya ◽  
Chikara Kunisaki

358 Background: Adjuvant chemotherapy following curative gastrectomy is recommended for patients with pStage II or III, except pT3 (ss), N0 gastric cancer in Japan. This study aimed to compare the efficacy of postoperative adjuvant chemotherapy with S-1 versus SOX/XELOX for pStageIII gastric cancer. Methods: Between January 2015 and December 2018, 51 patients with pStage III gastric cancer underwent curative gastrectomy. The combination therapy group received a combined SOX and XELOX regimen as follows: (1) SOX regimen: 130 mg/m2 of oxaliplatin on day 1 every 3 weeks combined with 40 mg/m2 of S-1 twice daily on days 1–14 every 3 weeks; (2) XELOX regimen: 130 mg/m2 of oxaliplatin on day 1 every 3 weeks combined with 1000 mg/m2 of capecitabine twice daily on days 1–14 every 3 weeks. We evaluated their hospital records retrospectively. The indication of SOX/XELOX regimens was based on PS and intent of patients. Results: The S-1 group comprised 28 cases (pStage III A/B/C: 12/8/8), while the SOX/XELOX group comprised 23 cases (pStage III A/B/C: 4/10/9). There was no difference in age, sex, comorbidity, prognostic nutritional index and stage between two groups. The 2-year DFS of the S-1 group and the SOX/XELOX group were 58.6% and 71.7%, respectively (p = 0.367). Subgroup analysis showed that the 2-year DFS of patients with pStage IIIC gastric cancer in the S-1 group was significantly lower than the SOX/XELOX group (S-1 vs. SOX/XELOX: 25.9% vs. 78.7%, p = 0.041). As concerns adverse effects (CTCAE ver 4.0), peripheral sensory neuropathy was significantly higher in the SOX/XELOX group than in the S-1 group (S-1: grade I/II 3.6%/0% vs. SOX/XELOX: grade I/II 21.7%/34.8%, p < 0.001), although the other adverse effects did not differ between the two groups. Conclusions: SOX/XELOX therapy may be more useful than S-1 therapy for more advanced tumors among pStage III gastric cancers.

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Jia-Bin Wang ◽  
Ping Li ◽  
Xiao-Long Liu ◽  
Qiao-Ling Zheng ◽  
Yu-Bin Ma ◽  
...  

AbstractImmunosuppressive molecules are extremely valuable prognostic biomarkers across different cancer types. However, the diversity of different immunosuppressive molecules makes it very difficult to accurately predict clinical outcomes based only on a single immunosuppressive molecule. Here, we establish a comprehensive immune scoring system (ISSGC) based on 6 immunosuppressive ligands (NECTIN2, CEACAM1, HMGB1, SIGLEC6, CD44, and CD155) using the LASSO method to improve prognostic accuracy and provide an additional selection strategy for adjuvant chemotherapy of gastric cancer (GC). The results show that ISSGC is an independent prognostic factor and a supplement of TNM stage for GC patients, and it can improve their prognosis prediction accuracy; in addition, it can distinguish GC patients with better prognosis from those with high prognostic nutritional index score; furthermore, ISSGC can also be used as a tool to select GC patients who would benefit from adjuvant chemotherapy independent of their TNM stages, MSI status and EBV status.


Author(s):  
Keiichiro Ishibashi ◽  
Toru Aoyama ◽  
Masahito Kotaka ◽  
Hironaga Satake ◽  
Yasushi Tsuji ◽  
...  

Abstract Background The aim of this study was to evaluate the efficacy and safety of first-line chemotherapy with re-introduction of oxaliplatin (OX) more than 6 months after adjuvant chemotherapy including OX. Methods Stage II/III colon cancer patients with neuropathies of grade ≤ 1 who relapsed more than 6 months after adjuvant chemotherapy including OX were considered eligible. Eligible patients were treated with 5-fluorouracil, l-leucovorin and OX plus molecularly targeted agents or capecitabine and OX plus bevacizumab (BV) or S-1 and OX plus BV. The primary endpoint was the progression-free survival (PFS), and the secondary endpoints were the overall survival (OS), response rate (RR) and toxicity. Results A total of 50 patients were enrolled between September 2013 and May 2019. Twelve patients received 5-fluorouracil, l-leucovorin and OX (FOLFOX) plus BV, 21 patients received capecitabine and OX plus BV, 10 patients received S-1 and OX plus BV and 7 patients received FOLFOX plus cetuximab or panitumumab. The median PFS was 11.5 months (95% confidence interval [CI] 8.3–16.0), the median OS was 45.4 months (95% CI 37.4–NA), and the RR was 56.0% (95% CI 42.3–68.8). Adverse events of grade ≥ 3 that occurred in ≥ 5% of cases were neutropenia in 6 patients (12%), peripheral sensory neuropathy in 5 patients (10%), diarrhea in 4 patients (8%), hypertension in 4 patients (8%), anorexia in 3 patients (6%) and allergic reactions in 3 patients (6%). Conclusions First-line chemotherapy with re-introduction of OX more than 6 months after adjuvant chemotherapy including OX can be used safely with expected efficacy for relapsed colon cancer patients.


2021 ◽  
pp. 20201088
Author(s):  
Fuli Wang ◽  
Aizhong Qu ◽  
Yinping Sun ◽  
Jifeng Zhang ◽  
Benzun Wei ◽  
...  

Objective: The aim of this study was to compare the clinical efficacy of neoadjuvant chemoradiotherapy (NACRT) combined with postoperative adjuvant XELOX (Oxaliplatin +Capecitabine) chemotherapy and postoperative adjuvant chemotherapy (ACT) with XELOX for local advanced gastric cancer (LAGC). Methods: In this prospectively randomized trial, we investigated the effect of NACRT combined with postoperative ACT for LAGC. 60 patients were randomly divided into NACRT group and ACT group, with 30 patients in each group. Patients in NACRT group were given three-dimensional conformal radiotherapy (45 Gy/1.8 Gy/f) accompanied by synchronous XELOX of two cycles, followed by surgery, and then postoperative adjuvant XELOX chemotherapy of four cycles was performed. Patients in ACT group received surgery in advance, and then XELOX chemotherapy of six cycles was given. Results: The objective response rate of NACRT was 76.7%. The overall incidence of postoperative complications in NACRT group was not significantly different from that in ACT group (23.1% vs 30.0%, p = 0.560). The 1 year, 2 years, and 3 years progression-free survival (PFS)and overall survival (OS) in NACRT and ACT groups were 80.0% vs 56.7%, 73.3% vs 46.7%, 60.0% vs 33.3%, and 86.7% vs 80.0%, 76.7% vs 66.7%, 63.3% vs 50.0%, respectively. Patients in NACRT group showed a significantly higher R0 resection rate (84.6% vs 56.7%, p = 0.029),lower loco-regional recurrence rate (36.7% vs 11.5%, p = 0.039), longer PFS (p = 0.019) and freedom from locoregional progression(FFLP) (p = 0.004) than patients in ACT group, while there was no difference in OS (p = 0.215) and in toxicity incidence (p > 0.05). Conclusions: NACRT combined with postoperative adjuvant XELOX chemotherapy can improve R0 resection rate, reduce loco-regional recurrence, prolong PFS and FFLP without increasing the incidence of postoperative complications in patients with LAGC. Advances in knowledge: Compared with postoperative adjuvant chemotherapy, locally advanced gastric cancer patients may benefit from neoadjuvant chemoradiotherapy, and toxicity associated with chemoradiotherapy was tolerant and manageable.


2019 ◽  
Vol 39 (12) ◽  
pp. 6843-6849 ◽  
Author(s):  
TOSHIYUKI KOSUGA ◽  
TOMOKI KONISHI ◽  
TAKESHI KUBOTA ◽  
KATSUTOSHI SHODA ◽  
HIROTAKA KONISHI ◽  
...  

2019 ◽  
Vol 37 (2) ◽  
pp. 135-144 ◽  
Author(s):  
Masahiro Sasahara ◽  
Mitsuro Kanda ◽  
Seiji Ito ◽  
Yoshinari Mochizuki ◽  
Hitoshi Teramoto ◽  
...  

Background/Aims: Identification of nutritional indicators to predict short-term and long-term outcomes is necessary to provide appropriate treatment to patients with gastric cancer. Methods: We designed an analysis of a multicenter dataset of patients with gastric cancer who underwent gastrectomy between 2010 and 2014. We enrolled 842 eligible patients who had stage II/III gastric cancer. The area under the curve (AUC) values were compared among prognostic nutritional index (PNI), calculated as 10 × albumin g/dL + 0.005 × total lymphocyte count/mm3, and its constituents, and the predictive value of preoperative PNI for postoperative short-term and long-term outcomes was evaluated. Results: Preoperative PNI exhibited higher AUC values (0.719) for 1-year survival than its constituents, and the optimal cutoff value was 47. The disease-free and overall survival of patients in the PNI-low group were significantly shorter compared with those in the PNI-high group. The prognostic difference between the PNI-high and PNI-low groups was significantly greater in the subgroup of patients who underwent total gastrectomy. Clinically relevant postoperative complications were more frequently observed in the PNI-low group. Conclusions: The preoperative PNI is a useful predictor reflecting the incidence of complications after gastrectomy and the prognosis of patients with stage II/III gastric cancer.


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