CANOES: detecting rare copy number variants from whole exome sequencing data.

Backenroth D, Homsy J, Murillo L, Glessner J, Lin E, Brueckner M, Lifton R, Goldmuntz E, Chung W, Shen Y

Nucleic acids research, 2014.

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We present CANOES, an algorithm for the detection of rare copy number variants from exome sequencing data. CANOES models read counts using a negative binomial distribution and estimates variance of the read counts using a regression-based approach based on selected reference samples in a given dataset. We test CANOES on a family-based exome sequencing dataset, and show that its sensitivity and specificity is comparable to that of XHMM. Moreover, the method is complementary to Gaussian approximation-based methods (e.g. XHMM or CoNIFER). When CANOES is used in combination with these methods, it will be possible to produce high accuracy calls, as demonstrated by a much reduced and more realistic de novo rate in results from trio data. Acids Research.