Table 3 Factors associated with PFS

ctDNA

positive/negative

0.009^*

6.973

1.612–30.165

0.007^*

7.658

1.762–33.283

Age

Continuous

0.619

0.992

0.961–1.024

0.558

0.988

0.949–1.029

Sex

Male vs. Female

0.419

0.834

0.537–1.295

0.548

1.184

0.682–2.058

ECOG

0–2

0.747

1.127

0.544–2.337

0.526

1.284

0.593–2.781

MTB$

> 34 vs. ≤34

0.018^*

5.845

1.356–25.206

Stage

M1a,b vs. M1c

0.035^*

1.454

0.218–0.945