Figure 2.

Targeted next‐generation sequencing and combination analysis of genomic alterations using circulating tumor cells (CTC) and ctDNA. A, Genomic alterations in CTC from patients with head and neck cancer (HNC), esophageal cancer (OC), gastric cancer (GC) and colorectal cancer (CRC). The number of CTC is shown in the columns. *The number of CTC could not be determined for 4 patients. B, Genomic alterations in ctDNA from patients with HNC, GC, and CRC. ctDNA could not be extracted from 2 patients with CRC. C, Genomic alterations in CTC and ctDNA in patients with HNC, GC and CRC. #The same amino acid changes were detected in both CTC and ctDNA. D, Combination analysis of genomic alterations using CTC and ctDNA from patients with HNC. E, Combination analysis of genomic alterations using CTC and ctDNA from patients with CRC