A Study of LY3499446 in Participants With Advanced Solid Tumors With KRAS G12C Mutation

Inclusion Criteria:

Participants must have diagnosis of a solid tumor with KRAS G12C mutation that did not respond to at least 1 line of standard therapy and has spread to other part(s) of the body
For phase II, participants must be willing to have new tumor tissue biopsies (doctor removes a small amount of tissue) during the study if it does not cause undue risks to health
Participants must be willing to use highly effective birth control
Participants must have adequate organ function
Participants must be able to swallow capsules

Exclusion Criteria:

Participants must not have certain infections such as hepatitis or tuberculosis or HIV that is not well controlled
Participants must not have another serious medical condition including a serious heart condition, such as congestive heart failure, unstable angina pectoris, or heart attack within the last three months
Participants must not have cancer of the central nervous system that is not stable
Participants must not be pregnant or breastfeeding
Participants must not use herbal supplements