To explore the relevance of MCM10 with Breast cancer (BC) and associated mechanisms, we first retrieved MCM10 gene expression data of 1829 BC patient samples from GENT2 database and looked at MCM10 expressions patterns in patients having different degrees of BC malignancies based on molecular subtypes (Luminal A, Luminal B, HER2, Triple negative Breast cancer (TNBC) and as well as tumor grades (Grade 1, Grade 2, and Grade 3). The gene discussed is MCM10; the disease is breast cancer.