The primary objective of this trial is to explore the safety and tolerability of BI 853520 monotherapy and determine the maximum tolerated dose (MTD) for Japanese and Taiwanese patients with advanced or metastatic solid tumours.

Secondary objective is collection of preliminary data on anti-tumour efficacy

Inclusion criteria:

• Patients with a confirmed diagnosis of advanced, measurable or evaluable, non-resectable and/or metastatic non-hematologic malignancy, which has shown to be progressive in the last 6 months
• Patients who have failed conventional treatment or for whom no therapy of proven efficacy exists or who are not amenable to established treatment options
• Recovery from reversible toxicities (alopecia excluded) of prior anti-cancer therapies (Common Terminology Criteria for Adverse Events grade <2)
• Age >= 20 years
• Written informed consent in accordance with International Conference on Harmonisation/Good Clinical Practice (ICH/GCP) and local legislation
• Eastern Cooperative Oncology Group (ECOG), performance score 0-1

Exclusion criteria:

• Serious concomitant non-oncological disease/illness
• Active/symptomatic brain metastases
• Second malignancy
• Pregnancy or breastfeeding
• Women or men who are sexually active and unwilling to use a medically acceptable method of contraception.
• Treatment with cytotoxic anti-cancer-therapies or investigational drugs within four weeks of the first treatment with the study medication