This is a two-part study to determine the relative bioavailability of two different prototype capsules of GDC-0134 to that of an existing reference capsule of GDC-0134 under both fed and fasted conditions. The study is open to healthy female participants of non-childbearing potential.

Inclusion Criteria

• Body mass index (BMI) range 18.5 to 35 kilograms per square meter (kg/m2)
• In good health, determined by no clinically significant findings from medical history, physical examination, 12-lead ECG, and vital signs;
• Clinical laboratory evaluations within the reference range for the test laboratory, unless deemed not clinically significant by the principal investigators (PIs)
• Females of non-childbearing potential only

Exclusion Criteria

• History or clinical manifestation of any significant medical condition as determined by the PI (or designee)
• History of significant hypersensitivity, intolerance, or allergy to any drug compound, food, or other substance, unless approved by the PI (or designee)
• History of stomach or intestinal surgery or resection that would potentially alter absorption and/or excretion of orally administered drugs
• Use of any prescription medications/products within 14 days prior to Check-in (Day -1) for their first treatment period and during the entire study duration, unless deemed acceptable by the PI
• Use of oral antibiotics within 4 weeks or intravenous antibiotics within 8 weeks prior to the Screening evaluation and during the entire study duration
• Use of any over-the-counter, non-prescription preparations within 14 days prior to Check-in (Day -1) for their first treatment period and during the entire study duration, unless deemed acceptable by the PI
• Use of acid reducing medications (proton pump inhibitors [PPIs], histamine H2-receptor antagonists [H2RAs]) within 14 days prior to Check-in (Day -1) for their first treatment period and during the entire study duration. As an alternative, antacids may be allowed at least 4 hours before or after dose
• Use of any vaccines (including seasonal flu and H1N1 vaccines) within 14 days prior to Check-in (Day -1) for their first treatment period
• Use of tobacco- or nicotine-containing products within 6 months prior to Check-in (Day -1) for their first treatment period and during the entire study
• Any acute or chronic condition or any other reason that, in the opinion of the PI, would limit the subject's ability to complete and/or participate in this clinical study

Healthy female participants of non-childbearing potential