BHLHA15 and neoplasm: Nuclear immunostaining of MIST1 was found in tumor cells of 55 (53.9%; valid n = 102) primary GCs, 25 (39.1%; valid n = 64) lymph node metastasis, 4 (44.4%; valid n = 9) distant metastases, and 6 (26.1%; valid n = 23) pretherapeutic biopsies.