SIGLEC15 and urinary bladder carcinoma: Analogously, Shafi et al. reported the increased Siglec‐15 expression in both tumor and immune cells in four types of cancer (lung, breast, head, and neck squamous cell carcinoma and bladder cancer)15; Quirino et al. stated high Siglec‐15 expression could be observed in neoplastic tissues in gastric cancer.27