A Phase Ia/Ib, Open Label, Dose-escalation Study of the Combination of BI 907828 With BI 754091 and BI 754111, Followed by Expansion Cohorts, in Patients With Advanced Solid Tumors

Phase Ia - Dose Escalation

The main objective of the dose-escalation part is to determine the maximum tolerated dose (MTD) of BI 907828 in combination with BI 754091 and BI 754111, based on the frequency of patients experiencing dose-limiting toxicities (DLTs), and/or the recommended dose for further development of BI 907828 in combination with BI 754091 and BI 754111, and to evaluate safety and tolerability of BI 907828 in combination with BI 754091 and BI 754111 by monitoring the occurrence and severity of adverse events (AEs).

The secondary objectives are the determination of the pharmacokinetic (PK) profile of BI 907828, BI 754091 and BI 754111 based on Cmax and AUC0-tz, and the preliminary assessment of anti-tumor activity.

Phase Ib - Dose Expansion

The main objective of the dose-expansion part is to assess the preliminary efficacy of the combination of BI 907828, BI 754091, and BI 754111.

The secondary and further objectives are to further assess the safety, the PK profiles at the recommended dose for expansion (RDE), and to determine the Recommended Phase II Dose (RP2D).