APOA1 and neoplasm: APOA1 immunostaining showed no relationship between Dukes’ staging (χ2 = 4.86, df = 4, p = 0.30), tumour grading (χ2 = 1.19, df = 4, p = 0.88) and lymph node involvement (χ2 = 4.46, df = 2, p = 0.11).