Body mass index and long-term outcomes in stage III colon cancer patients administered postoperative chemotherapy

82 Background: Radical gastrectomy followed by adjuvant chemotherapy for advanced gastric cancer brings about serious nutritional impairment. Recent studies have shown an association between body mass index (BMI) and perioperative outcomes of gastric cancer. However, little is known about the association between BMI and long-term outcomes of advanced gastric cancer. Our study evaluated the clinical impact of BMI on the long-term outcomes of gastric cancer staged at II and III, treated by radical gastrectomy followed by adjuvant chemotherapy. Methods: We analysed a total of 211 cases of advanced gastric cancer stage II and III between January 2005 and December 2010 at Chung-Ang University Hospital. The patients were divided into 4 groups according to BMI; underweight, normal, overweight, and obese. In addition, they were divided into two groups (BMI-High vs BMI-Low). We assessed age, sex, tumor location, lymph node involvement, operation method, initial cancer stage, recurrence, and survival (overall survival and disease free survival) between two groups. Results: We classified them into 4 groups according to BMI; underweight, normal, overweight, and obese. There was no difference in overall survival between normal, overweight, and obese group. However, there was significant difference between underweight group and the other groups. As for disease free survival, similar findings were observed. Among 211 patients, 154 patients (72.9%) were included in BMI-L (body mass index < 25), whereas 57 patients (27.1%) in BMI-H (body mass index ≥ 25). There was no difference in age, sex, tumor location, stage, lymph node involvement, operation method, recurrence, and cancer-related death between two groups. When classified into 4 groups as stage II in BMI-H, stage II in BMI-L, stage III in BMI-H, and stage III in BMI-L, overall survival showed significant difference in stage, however, no difference between BMI-H and BMI-L. Disease free survival showed no significant difference in stage and BMI, especially, no significant difference between stage II in BMI-L and stage III in BMI –H. Conclusions: Our findings suggest that preoperative BMI may predict the long term outcomes of advanced gastric cancer after radical surgery and chemotherapy.

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Impact of Body Mass Index and Weight Change After Treatment on Cancer Recurrence and Survival in Patients With Stage III Colon Cancer: Findings From Cancer and Leukemia Group B 89803

Journal of Clinical Oncology ◽

10.1200/jco.2007.15.6687 ◽

2008 ◽

Vol 26 (25) ◽

pp. 4109-4115 ◽

Cited By ~ 170

Author(s):

Jeffrey A. Meyerhardt ◽

Donna Niedzwiecki ◽

Donna Hollis ◽

Leonard B. Saltz ◽

Robert J. Mayer ◽

...

Keyword(s):

Body Mass Index ◽

Colon Cancer ◽

Adjuvant Chemotherapy ◽

Body Mass ◽

Weight Change ◽

Cancer Recurrence ◽

Stage Iii ◽

Stage Iii Colon Cancer ◽

Chemotherapy Patients ◽

Risk Of Cancer

Purpose Obesity is a risk factor for the development of colon cancer. However, the influence of body mass index (BMI) on the outcome of patients with established colon cancer remains uncertain. Moreover, the impact of change in body habitus after diagnosis has not been studied. Patients and Methods We conducted a prospective, observational study of 1,053 patients who had stage III colon cancer and who were enrolled on a randomized trial of adjuvant chemotherapy. Patients reported on height and weight during and 6 months after adjuvant chemotherapy. Patients were observed for cancer recurrence or death. Results In this cohort of patients with stage III cancer, 35% of patients were overweight (BMI, 25 to 29.9 kg/m2), and 34% were obese (BMI ≥ 30 kg/m2). Increased BMI was not significantly associated with a higher risk of colon cancer recurrence or death (P trend = .54). Compared with normal-weight patients (BMI, 21 to 24.9 kg/m2), the multivariate hazard ratio for disease-free survival was 1.00 (95% CI, 0.72 to 1.40) for patients with class I obesity (BMI, 30 to 34.9 kg/m2) and 1.24 (95% CI, 0.84 to 1.83) for those with class II to III obesity (BMI ≥ 35 kg/m2) after analysis was adjusted for tumor-related prognostic factors, physical activity, tobacco history, performance status, age, and sex. Similarly, after analysis was controlled for BMI, weight change (either loss or gain) during the time period between ongoing adjuvant therapy and 6 months after completion of therapy did not significantly impact on cancer recurrence and/or mortality. Conclusion Neither BMI nor weight change was significantly associated with an increased risk of cancer recurrence and death in patients with colon cancer.

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