Abstract: Methods for characterizing genome editing, clonal expansion and associated reagents for use in such methods are disclosed herein. Some embodiments of the technology are directed to characterizing a population of cells following an engineered genomic editing event, that includes in some embodiments characterizing genomic alterations occurring at both intended and unintended genomic loci within the genome of the populations of cells. Other embodiments are directed to utilizing Duplex Sequencing for assessing a clonal selection in mixed cell populations and/or cell populations following a genomic editing event. Further examples of the present technology are directed to methods for detecting and assessing clonal expansion of cells following a genomic editing event.

Abstract: Methods for making and using reagents and adapters for use in nucleic acid sequencing applications are disclosed herein. In several embodiments, adapters and reagents and the methods of making such adapters and reagents can be used for Duplex Sequencing applications.

Abstract: Disclosed herein are adapter nucleic acid sequences, double-stranded complexed nucleic acids, compositions, and methods for sequencing a double-stranded target nucleic acid with applications to error correction by duplex sequencing.