A Study to Evaluate the Efficacy and Safety of GDC-8264 in Preventing Cardiac Surgery-Associated Acute Kidney Injury (AKI) and Major Adverse Kidney Events (MAKE)

Inclusion Criteria

• •1. One of the following non-emergent cardiac surgery types that requires cardiopulmonary bypass (CPB) to be done in one procedure rather than separate procedures: Isolated Coronary Artery Bypass Grafting (CABG); Isolated Surgical Aortic Valve Replacement (AVR), Mitral Valve Replacement (MVR), Mitral Valve repair (MVr); Combined CABG+AVR, CABG+MVR, CABG+MVr, AVR+MVR, AVR+MVr
• •2. At least one or at least two of the following AKI risk factors, depending on the type of surgery: age \> 70 years, history of CKD with eGFR \< 60 milliliters/ minutes/ 1.73 meter square (ml/min/1.73 m\^2) within the last 6 months, diabetes (type 1 or type 2) requiring at least one oral hypoglycemic agent or insulin, history of chronic obstructive pulmonary disease (COPD) requiring medical therapy, left ventricular ejection fraction (LVEF) \< 40%, preoperative anemia \[hemoglobin \<10 grams/deciliters (g/dL)\]
• •3. Stable kidney function with no known episodes of AKI within 2 weeks of screening