Quantitative Analysis of HER2 Amplification by Droplet Digital PCR in the Follow-Up of Gastric Cancer Patients Being Treated with Trastuzumab after Surgery

Figure 2

Relationship between tumor characteristics and the plasma HER2 ratio in patients with GC. The correlation analysis was performed between the plasma HER2 ratio before receiving treatment and tumor characteristics including tumor size, differentiation, lymph node metastasis, and distant metastasis, using the Spearman or Pearson method. A value of less than 0.05 was considered to be significant.