The Basal subtype showed the highest number of specific upregulated genes (DNAJC2, DNAJC6, HSPA5, HSPA14 and CRYAA), DNAJA3 and CCT2 were upregulated in Luminal B, and DNAJB3 was only upregulated in HER2 tumours. The gene discussed is DNAJA3; the disease is neoplasm.