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Blood groups and malignant melanoma
The charts of 168 patients with malignant melanoma were reviewed with regard to the incidence of the major blood groups. Blood group A was encountered in 39.9%, Group B in 7.7%, Group AB in 3%, and Group O in 49.4%. Although blood group O had a higher frequency compared to that of the general white population of various series, the difference was not significant. Patients with blood group A had a median survival of 67.7 months whereas patients with blood group O had a median survival of 46.6 months (p = 0.04). The improved survival for blood group A remained significant only in female patients, when the sexes were considered separately. However, group A had an incidence of 24% in early Clark's lesions while that incidence in group O was 9.8%. Female patients had longer median survival (86 months) than male patients (44 months).
The charts of 168 patients with malignant melanoma were reviewed with regard to the incidence of the major blood groups. Blood group A was encountered in 39.9%, Group B in 7.7%, Group AB in 3%, and Group O in 49.4%. Although blood group O had a higher frequency compared to that of the general white population of various series, the difference was not significant. Patients with blood group A had a median survival of 67.7 months whereas patients with blood group O had a median survival of 46.6 months (p = 0.04). The improved survival for blood group A remained significant only in female patients, when the sexes were considered separately. However, group A had an incidence of 24% in early Clark's lesions while that incidence in group O was 9.8%. Female patients had longer median survival (86 months) than male patients (44 months).