In 7 patients, the tumor associations were atypical (Glycine‐R, 2 patients [chronic lymphocytic leukemia, testicular seminoma]; IgLON5, 1 patient [unclear histological origin]; KLHL, 1 patient [prostate adenocarcinoma]; AGNA1, 1 patient [lung adenocarcinoma]; leiomyosarcoma, 1 patient [ANNA‐1]; PCA‐1, 1 patient [Brenner tumor of ovary]). The gene discussed is IGLON5; the disease is testicular seminoma.