Data presented in this article are supplementary materials to the research article entitled "IGFBP2 regulates PD-L1 expression by activating the EGFR-STAT3 signaling pathway in malignant melanoma". Data for melanoma patients who did not receive anti-PD-1 treatment were obtained from Tianjin Medical University Cancer Institute & Hospital from February 1981 to May 2013. Kaplan-Meier was used for survival analysis. RNA sequencing data from 28 melanoma patients receiving anti-PD-1 therapy were download from GEO database (GSE78220). Cluster analysis of RNA expression was performed using R (package pheatmap). The difference of PD-L1 expression was analysed by the Boxplot (R ggplot2 package). Differences between each group were analyzed by Fisher exact test. Information of 13 melanoma patients who had failed prior chemotherapy and treated in the Tianjin Medical University Cancer Institute & Hospital between July 2015 and December 2018 was collected. The response was captured by Response Evaluation Criteria in Solid Tumors 1.1 (RECIST 1.1).