Changes

CONTRA implements a method for CNV detection for targeted resequencing data, including whole-exome capture data. It calls copy number gains and losses for each target region based on normalized depth of coverage. Key strategies include the use of base-level log-ratios to remove GC-content bias, correction for an imbalanced library size effect on log-ratios, and the estimation of log-ratio variations via binning and interpolation. See Bioinformatics (2012) doi: 10.1093/bioinformatics/bts146.