PURPOSE: To investigate the possible association between ABO blood types and breast cancer in Greek women. METHODS: 202 female patients with breast cancer and 139 healthy women as control group were examined clinically and with breast ultrasound and those older than 40 years, also with bilateral digital mammography. RESULTS: In the case-group, 26.7% had blood group O, 5.5% had blood group B, 61.9% had blood group A and 5.9% had blood group AB. In the control-group, 47.5% had blood group O, 13.7% had blood group B, 31.6% had blood group A and 7.2% had blood group AB. Usage of diagrams with the percentages of frequency, the average control, Pearson, Spearman, Student's t-tests analyzed with SPSS statistical software showed a significant correlation between breast cancer and blood group A (p<0.01). CONCLUSIONS: Although in the literature it is controversial whether ABO/Rh blood groups have association with breast cancer, the results of our study show a significant correlation between breast cancer and blood group A.
PURPOSE: To investigate the possible association between ABO blood types and breast cancer in Greek women. METHODS: 202 female patients with breast cancer and 139 healthy women as control group were examined clinically and with breast ultrasound and those older than 40 years, also with bilateral digital mammography. RESULTS: In the case-group, 26.7% had blood group O, 5.5% had blood group B, 61.9% had blood group A and 5.9% had blood group AB. In the control-group, 47.5% had blood group O, 13.7% had blood group B, 31.6% had blood group A and 7.2% had blood group AB. Usage of diagrams with the percentages of frequency, the average control, Pearson, Spearman, Student's t-tests analyzed with SPSS statistical software showed a significant correlation between breast cancer and blood group A (p<0.01). CONCLUSIONS: Although in the literature it is controversial whether ABO/Rh blood groups have association with breast cancer, the results of our study show a significant correlation between breast cancer and blood group A.