Analysis of another transcriptomic data set of 75 patients with serous ovarian carcinoma (Pamula-Pilat-101 MAS 5.0-u133p2; GEO accession #GSE63885) indicated that patients with low ARG1 gene expression had a significantly longer OS (Supplementary Fig. 1a, P = 0.049, log-rank test) and progression-free survival (Supplementary Fig. 1b, P = 0.022, log-rank test) than patients with high ARG1 expression. This evidence concerns the gene ARG1 and ovarian serous carcinoma.