Small Cell Lung Carcinoma (SCLC)

\[68Ga\]Ga-PentixaFor PET-CT will be performed in patients with Small cell lung cancer (SCLC) to confirm the targeting of CXCR4 by \[68Ga\]Ga-PentixaFor

This study is open to adults with small cell lung cancer and other neuroendocrine cancers. The study is in people with advanced cancer for whom previous treatment was not successful or no standard treatment exists. The purpose of this study is to find out how a medicine called BI 764532 gets distributed in the body and in tumours. Participants get BI 764532 when starting treatment. In the first weeks, doctors check how BI 764532 is taken up in tumours by means of an imaging method. If there is benefit for the participants and if they can tolerate it, the treatment is given up to the maximum duration of the study. During this time, participants visit the study site regularly. The total number of visits depends on how they respond to and tolerate the treatment. Doctors record any unwanted effects and regularly check the general health of the participants.

This trial is a single-arm, open-label, first-in-human study of CS231295, comprising two phases: dose escalation (including single-dose and multiple-dose) and cohort expansion. The Dose-Limiting Toxicity (DLT) observation period includes 6 days for single-dose and the first cycle (28 days) for multiple-dose. The overall study consists of screening period, treatment period, and follow-up period. The primary objectives of this study are to evaluate the safety, tolerability and pharmacokinetic (PK) characteristics of CS231295 in patients with advanced solid tumors, and to recommended Phase 2 dose(s) (RP2D) of CS231295 in appropriate tumor(s).