An Integrative Prognostic and Immune Analysis of PTPRD in Pan-Cancer Chunpei Ou longhua district central hospital Qin Peng longhua district central hospital Changchun Zeng (
[email protected] ) longhua district central hospital, guangdong medical university https://orcid.org/0000-0002-9489- 0627 Research Article Keywords: PTPRD, pan-cancer, prognosis, tumor-inltrating, immunotherapy Posted Date: June 4th, 2021 DOI: https://doi.org/10.21203/rs.3.rs-569409/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Page 1/22 Abstract Background: PTPRD plays an indispensable role in the occurrence of multiple tumors. However, pan- cancer analysis is unavailable. The purpose of this research was to investigate the relationship between PTPRD and immunity and describe its prognostic landscape across various tumors. Methods: We explored expression prole, survival analysis, and genomic alterations of PTPRD based on the TIMER, GEPIA, UALCAN, PrognoScan, and cBioPortal database. The frequency of PTPRD mutation and its correlation with response to immunotherapy were evaluated using the cBioPortal database. The relationship between PTPRD and immune-cell inltration was analyzed by the TIMER and TISIDB databases. A protein interaction network was constructed by the STRING database. GO and KEGG enrichment analysis was executed by the Metascape database. Results: A signicant correlation between PTPRD expression and prognosis was found in various cancers. Aberrant PRPRD expression was closely related to immune inltration. Importantly, the patients who harbored PTPRD mutation and received immune checkpoint inhibitors had worse overall survival, especially in non-small cell lung cancer and melanoma, and had a higher TMB score.