HLA-C and cancer: Additionally, gene co-expression analysis was employed to study the correlation between the genes associated with the immune system and HMGN1 expression levels in 33 cancers, such as chemokines (Fig. 9A), MHC-encoding genes (Fig. 9B), chemokine receptors (Fig. 9C), immune-activating (Fig. 9D), and immune-suppressing genes (Fig. 9E).