SPON2 and prostate neoplasm: PCZA and PCF datasets shared seven common regulated proteins in prostate tumor tissues, which are O14773 (TPP1), O95994 (AGR2), P22626 (HNRNPA2B1), P40926 (MDH2), Q9BUD6 (SPON2), P17661 (DES), Q7L266 (ASRGL1), as shown in Fig. S8b.