Fig. 4
Spaghetti plots with summary of plasma HER2ECD levels of the two arms’ cohort behavior: red lines Arm A and turquoise lines Arm B. Observation time points: Base: Baseline mean values before-after first injection; d1c2: day 1 s cycle (after 3 weeks); ass1: first assessment at 8–9 weeks; PD1: first progression; PD2: second progression