Identification of transgene insertion sites via short- and long-read whole genome sequencing.

Transgenic mouse lines are essential to uncover organ or system level genotype-phenotype relationships. The generation of such lines via transgene addition may lead to the insertion into unknown genomic loci potentially leading not only to the disruption of native genes but also attenuation of transgene expression. Additionally, this often results in the inability to determine transgene zygosity which in turn complicates breeding and interpretation of experimental results. In this study we present two whole genome sequencing based pipelines that allow the identification and genotyping of even complex multi transgenic inserts. As they use widely available reagents and bioinformatic tools, they can easily be applied to develop genotyping strategies in potentially any species.