SFRP1 and ampulla of vater adenocarcinoma: The expression level of SFRP1 mRNA was similar in patients with a recurrence of ampullary adenocarcinoma (median log2 ratio of SFRP1, 7.24; range, 7.02–8.55) and in patients without recurrence (median log2 ratio of SFRP1, 7.21; range, 7.02–8.55) (Fig. 6B).