A Dose Escalation Study Evaluating the Safety and Tolerability of GDC-0032 in Participants With Locally Advanced or Metastatic Solid Tumors or Non-Hodgkin's Lymphoma (NHL) and in Combination With Endocrine Therapy in Locally Advanced or Metastatic Hormone Receptor-Positive Breast Cancer

Study Summary

This is an open-label, multicenter, Phase I/II study to assess the safety, tolerability, and pharmacokinetics of GDC-0032. The Phase I portion will be divided into two stages. During Stage 1, GDC-0032 will be administered every day orally and at escalating doses in participants with locally advanced or metastatic solid tumors. During Stage 2, GDC-0032 will be administered alone or as combination therapy within indication-specific cohorts. In Phase II of the study, the efficacy and safety of the combination GDC-0032 and fulvestrant will be evaluated in post-menopausal female participants with locally advanced or metastatic human epidermal growth factor receptor 2 (HER2)-negative, hormone receptor-positive breast cancer.

Primary Outcome

A DLT is defined as any one of the following toxicities occurring within the DLT Assessment Window (Days 1-35 of Cycle 1 in Stage 1) assessed by the investigator: Grade ≥ 3 non-hematologic, non-hepatic organ system, non-metabolic (hyperglycemia and hyperlipidemia) toxicity, excluding alopecia of any grade, Grade 3 diarrhea, Grade 3 nausea or vomiting; Grade ≥ 4 thrombocytopenia; Grade ≥ 4 neutropenia lasting \> 5 days or accompanied by fever; Fasting Grade ≥ 4 hyperglycemia or ≥ 3 hyperglycemia

Interventions

• DRUG Letrozole
• DRUG Midazolam
• DRUG Fulvestrant
• DRUG GDC-0032