A cell line is considered dependent if it has a probability of dependency greater than 0.5.
Probability of Dependency:
Probabilities of dependency are calculated for each gene score in a cell line as the probability that score arises from the distribution of essential gene scores rather than nonessential gene scores. See here for details.
Outcome from DEMETER2 or CERES. A lower score means that a gene is more likely to be dependent in a given cell line. A score of 0 is equivalent to a gene that is not essential whereas a score of -1 corresponds to the median of all common essential genes.
No Unique Guides:
A gene which shares all of its guides with other genes. Dropped from post-CERES files beginning 20Q1 due to inaccurate CERES scores.
RNASeq files are aligned with STAR and quantified with RSEM, then TPM-normalized. Reported values are log2(TPM+1).
The relative copy number pipeline used varies by cell line. For around 1000 lines, Sanger WES data was used, while for around 700 lines, Broad WES data was used. The remaining lines use SNP array data as explained in 10.1038/s41586-019-1186-3. See 10.1101/720243 for details on how CN source is chosen per line. Lines with WES data were processed through GATK using PONs from TCGA without matched normals and transformed by log2(x+1).