Int J Med Sci 2020; 17(15):2306-2311. doi:10.7150/ijms.47000 This issue

Research Paper

Study of weight and body mass index on graft loss after transplant over 5 years of evolution

Antonio Liñán González1, Raquel García Pérez1, Juan Bravo Soto2, Rafael Fernández Castillo1✉

1. University of Granada. Faculty of Health Sciences, Parque Tecnológico de Ciencias de la Salud. Avd de la Ilustración 60 CP18016, Granada/Spain.
2. Academic Medical Center Virgen de las Nieves, Nephrology Department. Av. de las Fuerzas Armadas, 2, 18014 Granada Spain.

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González AL, Pérez RG, Soto JB, Castillo RF. Study of weight and body mass index on graft loss after transplant over 5 years of evolution. Int J Med Sci 2020; 17(15):2306-2311. doi:10.7150/ijms.47000. Available from

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Patients frequently experience a weight gain after organ transplantation. This increase in weight is the result of multiple factors, and is usually intensified by glucocorticoids and immunosuppressive drugs. It can also delay graft function and cause serious health problems. The objective of this study was to study the obesity as well as its causes and consequences in kidney transplant patients. The sample population consisted of 282 renal transplant patients, 170 men and 112 women, 18-74 years of age, who were monitored over a period of five years. For the purposes of our research, the patients were divided into two groups: (1) normal weight 18.5 ≤ BMI <25; (2) overweight 25 ≤ BMI ≤30. The association between BMI as an independent variable and graft survival was determined by means of a Cox regression analysis. Overweight patients were characterized by a higher comorbidity prevalence. In the Cox multivariate analysis, the initial BMI, evaluated as a continuous variable continued to be an independent predictor of delayed graft function and chronic nephropathy. This study evaluated the BMI as a continuous value instead of a categorical value. In conclusion, our results suggest that an increase in BMI without categorical variation can be an independent risk factor for graft loss. Consequently, obesity prevention for renal transplant patients should include dietary counseling and management, moderate physical activity, and steroid minimization.

Keywords: Anthropometry, Obesity, BMI, Graft Loss, Kidney Transplant, Overweight