Study to Assess GTAEXS617 in Participants With Advanced Solid Tumors

Summary

The primary purpose of this study is to assess the safety, tolerability, pharmacokinetics (PK) and anti-tumor activity of GTAEXS617 (REC-617) in participants with advanced solid tumors.

Eligibility

Key Inclusion Criteria:

* Eastern Cooperative Oncology Group (ECOG) performance status 0-1.
* Life expectancy \> 3 months.
* One of the following histologically or cytologically confirmed advanced solid tumors: head and neck squamous cell carcinoma (HNSCC), pancreatic adenocarcinoma, non-small cell lung cancer (NSCLC), breast carcinoma (hormone receptor-positive \[HR+\] and Human Epidermal Growth Receptor 2 negative \[HER2-\] that has progressed to a prior treatment with Cyclin-Dependent Kinase 4 (CDK4)/ Cyclin-Dependent Kinase 6 \[CDK6\] inhibitor), or platinum-resistant high-grade epithelial ovarian, primary peritoneal, or fallopian tube cancers (HGSOC), or triple negative breast cancer (TNBC).
* Must have disease that is advanced (ie, surgery or radiotherapy are not considered to be potentially curative), recurrent, or metastatic following SoC treatments.
* Adequate hematological, liver, and renal function.
* Must have tumor lesion(s) or metastases amenable to biopsy, excluding bone metastases.

Key Exclusion Criteria:

* Active and clinically significant (CS) infection.
* Refractory nausea and/or vomiting, chronic gastrointestinal disease, or previous significant bowel resection, with CS sequelae that would preclude adequate absorption of GTAEXS617.
* Symptomatic central nervous system (CNS) malignancy or metastases.
* Concurrent active or previous malignancy.
* Prior organ or allogeneic stem-cell transplantation.
* Moderate or severe cardiovascular disease.
* Received anticancer therapy within 28 days or 5 half-lives (whichever is shorter) before the first dose of the study treatment.
* Received treatment with known strong/moderate inhibitors and/or strong inducers of cytochrome P450 3A isoform subfamily (CYP3A) within 14 days or 5 half-lives before the first dose of study treatment.
* Received treatment with known inhibitors or inducers of P-glycoprotein (P-gp) or breast cancer resistance protein (BCRP) within 14 days or 5 half-lives before the first dose of study treatment.
* Received treatment with known substrates of organic anion transporting peptide or BCRP within 14 days or 5 half-lives before the first dose of study treatment.
* Unresolved or unstable serious toxic side-effects of prior chemotherapy or radiotherapy
* Has had or is scheduled to have major surgery \<28 days prior to the first dose of study treatment.

Note: Other protocol Inclusion/Exclusion criteria may apply.

Conditions9

Interventions2

Locations6 sites

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