PCMT1 Is a Potential Prognostic Biomarker and Is Correlated with Immune Infiltrates in Breast Cancer.

BACKGROUND

Protein-L-isoaspartate (D-aspartate) O-methyltransferase () is involved in the occurrence and development of a variety of malignant tumors. However, the prognostic value of in breast cancer remains unclear.

METHODS

Based on the Cancer Genome Atlas database, we assessed the correlation between the expression of and prognosis, immune invasion, and tumor mutation burden in a variety of cancers. The expression level, mutation, immune correlation, and coexpression of in breast cancer were studied using the following databases: UALCAN database, Human Protein Atlas database, cBioPortal database, TIMER database, and LinkedOmics database. Kaplan-Meier Plotter was used for survival analysis. Receiver operating characteristic (ROC) curves and nomograms were drawn using the R software package. < 0.05 was considered statistically significant.

RESULTS

Pancancer analysis showed that is highly expressed in a variety of cancers and is significantly related to the prognosis of a variety of cancers. is significantly related to the tumor mutation burden of a variety of cancers. is significantly high in breast cancer, and it is significantly related to the abundance of immune infiltration. Survival analysis revealed that high expression is significantly associated with shorter overall survival (OS), relapse-free survival (RFS), and postprogression survival (PPS) in breast cancer patients. ROC curves and nomograms verify the effectiveness of as a prognostic biomarker for breast cancer.

CONCLUSIONS

PCMT1 can be used as a potential prognostic biomarker of breast cancer, and it is significantly related to the abundance of breast cancer immune infiltration.