RT Journal Article SR Electronic T1 Fast gene set enrichment analysis JF bioRxiv FD Cold Spring Harbor Laboratory SP 060012 DO 10.1101/060012 A1 Gennady Korotkevich A1 Vladimir Sukhov A1 Alexey Sergushichev YR 2019 UL http://biorxiv.org/content/early/2019/10/22/060012.abstract AB Preranked gene set enrichment analysis (GSEA) is a widely used method for interpretation of gene expression data in terms of biological processes. Here we present FGSEA method that is able to estimate arbitrarily low GSEA P-values with a higher accuracy and much faster compared to other implementations. We also present a polynomial algorithm to calculate GSEA P-values exactly, which we use to practically confirm the accuracy of the method.