A Study to Evaluate the Safety, Pharmacokinetics, and Anti-Tumor Activity of RO7589831 in Participants With Advanced Solid Tumors

About the study

This is a first-in-human, Phase I, open-label, multicenter, dose-escalation and dose expansion study to evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics, and preliminary anti-tumor activity of RO7589831 monotherapy in participants with microsatellite instability (MSI) and/or deficient mismatch repair (dMMR) advanced solid tumors. RO7589831 is an oral drug that acts on a protein called Werner (WRN), which may promote the growth of cancers that are MSI and/or dMMR. By acting on WRN, RO7589831 may be able to block the growth of these types of cancer.

Who can take part

You may be eligible to participate in the study if you meet the following criteria:

INCLUSION CRITERIA

Inclusion Criteria:

Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1
Have a locally confirmed microsatellite instability (MSI) and/or deficient mismatch repair (dMMR), histologically or cytologically documented advanced (unresectable and/or metastatic) solid tumor
Have received and then progressed following or are intolerant to at least 1 standard treatment regimen in the advanced setting
Presence of measurable disease according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1
Life expectancy of at least (≥)12 weeks
Availability of formaldehyde-fixed paraffin-embedded (FFPE) archival tumor tissue for submission to Sponsor/central laboratory for retrospective central testing; for participants without archival tissue, a biopsy from either primary or metastatic tumor lesion, deemed medically feasible, must be taken
Adequate hematologic, end-organ, and cardiovascular function, as defined in the protocol

EXCLUSION CRITERIA

Exclusion Criteria:

Inability or unwillingness to swallow pills
Malabsorption syndrome or other condition that would interfere with enteral absorption
Known hypersensitivity or intolerance to ingredients from the study drug formulation including patients with rare genetic disorders such as galactosaemia, glucose-galactose intolerance or congenital lactase deficiency
Known uncontrolled central nervous system (CNS) metastases (progressing or requiring anticonvulsants or corticosteroids for symptomatic control) and/or carcinomatous meningitis
Known active or uncontrolled bacterial, viral, fungal, mycobacterial (including but not limited to tuberculosis and atypical mycobacterial disease), parasitic, or other infection (excluding fungal infections of nail beds), or any major episode of infection requiring treatment with intravenous antibiotics or hospitalization within 2 weeks prior to the start of drug administration (related to the completion of the course of antibiotics, except if for tumor fever) or 6 months for any intracranial abscess
Has a positive test at screening for hepatitis B virus, hepatitis C virus, or for human immodeficiency virus (HIV), per local diagnostic standard and in accordance with local laws and regulations
Uncontrolled diabetes or symptomatic hyperglycemia (i.e., well controlled defined as a screening hemoglobin A1c <8% and no urinary ketoacidosis)
Alcohol or drug dependence or abuse
Patients with known Werner (WRN) syndrome
Prior treatment with any WRN helicase inhibitor
Pregnancy, breastfeeding, or intention of becoming pregnant during the study