Phase 1/2 Study to Evaluate Safety, PK and Efficacy of the MYC-Inhibitor OMO-103 in Solid Tumours

This study is an open label, two-part, FIH Phase 1/2 dose-finding study designed to determine the safety, tolerability, PK, PD and proof-of-concept of OMO-103 in patients with advanced solid tumours.

The study consists of two parts:

• Part 1: Dose escalation in patients with advanced solid tumours, including 5 OMO-103 dose levels.

Approximately 11 to 24 patients in total will be enrolled in Part 1, covering 5 dose levels with the primary objective of determining the safety and tolerability of OMO-103 and defining an appropriate dose for further evaluation in Part 2.

The study will start with an accelerated-titration dose-escalation scheme enrolling one evaluable patient per cohort for the first 2 dose levels followed by a classic 3+3 design.

• Part 2: Dose expansion where at least 3 parallel groups of patients with advanced Non Small Cell Lung Cancer (NSCLC), Triple Negative Breast Cancer (TNBC) and Colorectal Cancer (CRC) will be treated at the recommended Phase 2 dose (RP2D) of OMO-103 to further characterise the safety, tolerability, PK, PD and anti-tumour activity of OMO-103.

Approximately 18 patients will be enrolled in each of the 3 parallel groups of patients (NSCLC, TNBC, CRC) in Part 2.