REDIportal: Millions of novel A-to-I RNA editing events from thousands of RNAseq experiments

Luigi Mansi, Marco Antonio Tangaro, Claudio Lo Giudice, Tiziano Flati, Eli Kopel, Amos Avraham Schaffer, Tiziana Castrignanò, Giovanni Chillemi, Graziano Pesole, Ernesto Picardi

Research output: Contribution to journalArticlepeer-review

71 Scopus citations


RNA editing is a relevant epitranscriptome phenomenon able to increase the transcriptome and proteome diversity of eukaryotic organisms. ADAR mediated RNA editing is widespread in humans in which millions of A-to-I changes modify thousands of primary transcripts. RNA editing has pivotal roles in the regulation of gene expression or modulation of the innate immune response or functioning of several neurotransmitter receptors. Massive transcriptome sequencing has fostered the research in this field. Nonetheless, different aspects of the RNA editing biology are still unknown and need to be elucidated. To support the study of A-to-I RNA editing we have updated our REDIportal catalogue raising its content to about 16 millions of events detected in 9642 human RNAseq samples from the GTEx project by using a dedicated pipeline based on the HPC version of the REDItools software. REDIportal now allows searches at sample level, provides overviews of RNA editing profiles per each RNAseq experiment, implements a Gene View module to look at individual events in their genic context and hosts the CLAIRE database. Starting from this novel version, REDIportal will start collecting non-human RNA editing changes for comparative genomics investigations. The database is freely available at

Original languageEnglish
Pages (from-to)D1012-D1019
JournalNucleic Acids Research
Issue numberD1
StatePublished - 8 Jan 2021

Bibliographical note

Publisher Copyright:
© 2021 The Author(s) 2020. Published by Oxford University Press on behalf of Nucleic Acids Research.


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