Package: dysregnet
DysRegNet packageDysRegNet, is a  method for inferring patient-specific regulatory alterations (dysregulations) from gene expression profiles. DysRegNet uses linear models to account for confounders and residual-derived z-scores to assess significance.InstallationTo install the package from PyPI please run:pip install dysregnetor you can install it from git:git clone https://github.com/biomedbigdata/DysRegNet_package.git  && cd DysRegNet_packagepython setup.py installData inputThe inputs of the  package are the following Pandas DataFrame object:expression_data  - Gene expression matrix with the format: patients as rows (first column - patients/samples ids), and genes as columns.GRN - Gene Regulatory Network (GRN) with two columns in the following order ['TF', 'target'].meta -  Metadata with the first column containing patients/samples ids and other columns for the condition and the covariates.The patients id or samples ids must be the same in the "expression_data" and  "meta". Additionally, gene names or ids must match the ones in the "GRN" DataFrame.In the condition column of the meta DataFrame, the control samples should be encoded as 0 and case samples as 1.The gene regulatory network should be provided by the user. You can either use an experimental validated GRN or learn it from control samples. We recommend using software likearboretosince you can use its output directly to DysRegNet.ParametersAdditionally, you can provide the following parameters:conCol: Column name for the condition in the meta DataFrame.CatCov: List of categorical variable names. They should match the name of their columns in the meta Dataframe.ConCov: List of continuous covariates. They should match the name of their columns in the meta Dataframe.zscoring: Boolean, default: False. zscoring of expression data (if needed).bonferroni_alpha: P-value threshold for multiple testing correctionnormaltest: Boolean. If True, Run a normality test for residuals "scipy.stats.normaltest". If residuals are not normal, the edge will not be considered in the analysis.normaltest_alpha: p-value threshold for normaltest (if True).R2_threshold: R-squared (R2) threshold from 0 to 1 (optional).  If the fit is weaker, the edge will not be considered in the analysis.direction_condition: Boolean. If True: only include dysregulation that are relevant for the interactions (down-regulation of an activation or up-regulation of a supressions). Please check the paper for more details.Get StartedPlease note that the functions are annotated with dockstrings for more details.Import the package and pandas:importdysregnetimportpandasaspdDefine the confounding variables or the design matrix# The condition columnconCol='condition'# categorical variable columns in meta dataframe.# these columns will be transformed to variables for regressionCatCov=['race','gender']# continuous variable columns in meta dataframe.ConCov=['birth_days_to']Run DysRegNetdata=dysregnet.run(expression_data=expr,meta=meta,GRN=grn,conCol=conColCatCov=CatCov,ConCov=ConCov,direction_condition=True,normaltest=True,R2_threshold=.2)# results tabledata.get_results()# or a binary resultdata.get_results_binary()# get R2 values, coefficients, and coefficient p-values for all models/edgesdata.get_model_stats()The expected run time for the installation and running the demo dataset on a "normal" desktop computer is around 3~5 minutes.The outputThe package outputs a data frame that represents patient-specific dysregulated edges. The columns represent edges, and the rows are patient IDs.In the result table, a value of 0 means that the edge is not significantly dysregulated (different from control samples). Otherwise, the z-score is reported, with a positive in case of activation and a negative sign in case of repression (different than the sign of the residual).The method "get_results_binary()" outputs binarized dysregulations instead of z-scores.ExampleA simple example for running DysRegNet:
(Notebook/Google Colab).You will need to download the demo dataset and extract the files into test dataset/Link for the demo dataset:https://figshare.com/ndownloader/files/35142652Cite"DysRegNet: Patient-specific and confounder-aware dysregulated network inference"
Olga Lazareva*, Zakaria Louadi*, Johannes Kersting, Jan Baumbach, David B. Blumenthal, Markus List. bioRxiv 2022.04.29.490015; doi:https://doi.org/10.1101/2022.04.29.490015. * equal first-authors