# tadar <img id="tadar_logo" alt="tadar Logo" src="man/figs/tadar.png" align="right" width = "125"/> <!-- badges: start --> [](https://github.com/baerlachlan/tadar/actions/workflows/bioc-actions.yml) [](https://app.codecov.io/gh/baerlachlan/tadar?branch=devel) [](https://shields.io/) <!-- badges: end --> `tadar` is a package designed to enable Transcriptome Analysis of Differential Allelic Representation (DAR). DAR is parsimoniously defined as an unequal distribution of polymorphic loci between experimental sample groups; a situation likely to be encountered in RNA-seq experiments involving organisms that lack isogenicity. When unequally-represented polymorphic loci are also expression quantitative trait loci (eQTLs), differences in gene expression between groups can be incorrectly interpreted as a consequence of the experimental condition. DAR analysis is therefore recommended as a complementary technique alongside Differential Expression analysis. DAR analysis results in an easy-to-interpret value between 0 and 1 for each feature (e.g. gene) of interest, where 0 represents identical allelic representation and 1 represents complete diversity. This metric can be used to identify features prone to false-positive calls in Differential Expression analysis, and can be leveraged with statistical methods to alleviate the impact of such artefacts on RNA-seq data. An example of the application of DAR analysis can be found in our [manuscript](https://www.biorxiv.org/content/10.1101/2023.03.02.530865v3). ## Installation `BiocManager` is recommended for the installation of this package. ```r install.packages("BiocManager") BiocManager::install("tadar") ``` The development version of this package can also be installed from GitHub. ```r BiocManager::install("baerlachlan/tadar") ```