In the bladder cancer cell lines, the presence of serum rescued the PAM effects on cell viability by 20.2 ± 5.7% (p = 0.0047) in the most mesenchymal TSU-Pr1 cell line, by 29.4 ± 7.5% (p = 0.0489) in the TSU-Pr1-B1 cell line, and by 33.0 ± 9.6% (p = 0.0419) in the TSU-Pr1-B2 cell line. Here, TMEM37 is linked to urinary bladder cancer.