Abstract: Synthetic polynucleotide libraries may include a plurality of polynucleotides. The polynucleotides may comprise DNA and may be configured to hybridize with one or more regions of target nucleic acids. The target nucleic acids may comprise a cDNA library. The cDNA library may comprise at least one exon-exon boundary between a first exon and a second exon.

Abstract: Systems, methods, and compositions for identifying genomic variants and methylation analysis, including synthetic polynucleotide libraries, are provided. The synthetic polynucleotide libraries may comprise a plurality of polynucleotides. The polynucleotides may comprise sequences corresponding to a genetic abnormality in a genome. The stoichiometry of each of the plurality of polynucleotides is controlled. Systems, methods, and compositions described herein may include standards for determining the analytical sensitivity and/or accuracy of instruments configured to measure nucleic acid variant frequencies. Standards may comprise RNA-fusions and/or CNV mutations related to cancer.

Abstract: Provided herein are compositions and methods for identifying genomic variants. Further provided herein are standards useful for determining the analytical sensitivity and/or accuracy of instruments configured to measure nucleic acid variant frequencies.

Abstract: Provided herein are compositions and methods for next generation sequencing using universal polynucleotide adapters. Further provided are universal adapters which provide for a large number of samples to be sequenced in parallel. Further provided are methods for high-throughput testing of samples for disease testing.