Table 2.
Dynamics of plasma HER2 ratios in GC patients by ddPCR during the follow-up period.
| Patient ID | HER2 ratios | Best response | PFS (months) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 0 months | 2 months | 4 months | 6 months | 8 months | 10 months | 12 months | |||
| 1 | 4.59 | 2.44 | 2.23 | 0.89 | 0.71 | 1.58 | 1.04 | PR | 12 |
| 2 | 2.84 | 1.55 | 1.34 | 2.74 ∗ | 3.56 | — | — | SD | 6 |
| 3 | 5.95 | 2.14 | 1.74 | 2.29 | 1.84 | 3.46 ∗ | 3.28 | PR | 10 |
| 4 | 6.25 | 1.61 | 1.12 | 1.52 | 1.05 | 0.78 | 1.28 | PR | 12 |
| 5 | 8.19 | 2.91 | 1.54 | 1.06 | 2.12 | 4.88 ∗ | 4.64 | PR | 10 |
| 6 | 5.34 | 1.18 | 2.06 | 3.13 | 4.02 ∗ | 6.14 | — | PR | 8 |
| 7 | 4.79 | 2.53 | 1.02 | 1.54 | 2.4 | 3.64 ∗ | 3.88 | PR | 10 |
| 8 | 5.17 | 1.52 | 1.44 | 0.73 | 1.03 | 1.13 | 0.86 | PR | 12 |
| 9 | 2.72 | 1.31 | 2.29 | 3.54 ∗ | 4.22 | — | — | SD | 6 |
| 10 | 3.17 | 1.24 | 0.89 | 1.06 | 1.45 | 1.06 | 1.11 | PR | 12 |
| 11 | 4.44 | 1.88 | 1.59 | 2.04 | 3.15 ∗ | 5.28 | — | PR | 8 |
| 12 | 3.48 | 1.42 | 1.89 | 1.04 | 0.94 | 1.22 | 1.08 | SD | 12 |
SD: stable disease; PR: partial response; PFS: progress free survival; ∗ means time to progressive disease.