HIGHLY SENSITIVE SURVEILLANCE USING DETECTION OF CELL FREE DNA

摘要

Provided herein are methods and computer-readable storage media related to cell-free DNA and uses thereof to determine risk of a condition in a subject. In one embodiment, the method comprises analyzing nucleic acids from cell-free DNA extracted from a biological sample obtained from the subject to identify a plurality of loci, the nucleic acids comprising first nucleic acids of the subject and second nucleic acids not native to the subject; determining an allele of each of the plurality of loci; selecting at least one informative locus from the plurality of loci based on the determining of the allele; calculating an estimated allele frequency of a first allele at the at least one informative locus using a statistical distribution; determining an amount of cell-free DNA not native to the subject in the cell-free DNA based on the estimated allele frequency; and determining a risk in the subject.