B2M and glioblastoma: It can be seen that the expression of B2M mRNA is increased in most tumors, such as BRCA (p=1.604910E − 03), CHOL (p=7.43370000000354E − 07), ESCA (p=1.63501000000066E − 05), GBM (p=1.62447832963153E − 12), HNSC (p=1.62458935193399E − 12), KICH (p=3.87309999627661E − 08), KIRC (p < 1E − 12), KIRP (p=1.5612000003884E − 07), PCPG (p=<1E − 12), THCA (p=3.298400E − 03).