Spermatocytic tumours are positive for SALL4 (Figure 6B), OCT2, MAGEA4, KIT, SSX2, SYCP1, XPA and SAGE1, as well as DMRT1 (Figure 6C) and negative for OCT3/4 (Figure 6D), PLAP, FOXA2, AFP and β‐hCG.50, 66. The gene discussed is SAGE1; the disease is neoplasm.