Journal: Clinical Cancer Research
Article Title: HPV Sequencing Facilitates Ultrasensitive Detection of HPV Circulating Tumor DNA
doi: 10.1158/1078-0432.CCR-19-2384
Figure Lengend Snippet: Analytic sensitivity of HPV-seq. A, HPV-seq was conducted on fragmented SiHa genomic DNA at the indicated dilution. Hybrid capture baits targeted the indicated HPV-16 sequences. The lower limit of detection (LLOD) of HPV-seq was dependent on the use of dual-strand hybrid capture and the length of HPV-16 genome targeted by the baits. B, HPV-seq with full-length dual-strand hybrid capture (blue) provided an improvement in analytic sensitivity and LLOD (0.003%) as compared with hybrid capture for a single mutation (1%). C, Influence of multiple markers and sequencing depth on LLOD. Downsampling of HPV-seq data from full-length dual-strand hybrid capture demonstrates the dependence of the LLOD on the targeted length of HPV-16 genome (i.e., number of markers; right y -axis) and the sequencing depth ( x -axis). The probability of detecting the indicated number of HPV molecules (1, blue circles; 2, gray triangles; 5, yellow squares) is shown (left y -axis).
Article Snippet: The SiHa cervix cancer cell line, which harbors 1 to 2 integrated copies of HPV-16 , was obtained from ATCC (catalog no. HTB-35, RRID:CVCL_0032).
Techniques: Mutagenesis, Sequencing