Testing Ipatasertib as Potentially Targeted Treatment in Cancers With AKT Genetic Changes (MATCH - Subprotocol Z1K)

Inclusion Criteria: * Patients must have met applicable eligibility criteria in the Master MATCH Protocol EAY131/ NCI-2015-00054 prior to registration to treatment subprotocol * Patients must have an AKT mutation as determined via the MATCH Master Protocol * Patients with breast cancer are excluded * Patients with castration-resistant prostate cancer should maintain castrate levels of testosterone (i.e., with gonadotropin-releasing hormone (GnRH) agonists or through surgical castration). Patients are allowed to continue abiraterone acetate/prednisone with Ipatasertib if the patient just progressed on abiraterone acetate/prednisone * Patients must not have known hypersensitivity to Ipatasertib or compounds of similar chemical or biologic composition * Patients with known KRAS, NRAS, HRAS, or BRAF mutations are not eligible for this protocol, as these mutations may lead to limited response due to resistance * Patients with diabetes or risk for hyperglycemia are eligible. Patients with diabetes mellitus should be on a stable dose of oral hypoglycemic agents for \>= 4 weeks and appropriate diet. Patients with diabetes mellitus may enter the study unless any of the following exclusion criteria are fulfilled: * Baseline fasting glucose value of \> 8.9 mmol/L or 160 mg/dL (fasting is defined as no calorific intake for at least 8 hours) * Patients not on a stable dose of oral hypoglycemic medication for \>= 4 weeks and appropriate diet * Insulin required for routine diabetic …