The main purpose of this study is learn about the the safety and side effects of the study drug, RGX-104. RGX-104 is an experimental drug. This means that RGX-104 is not approved by the Food and Drug Administration (FDA). This is the first time RGX-104 will be given to humans. Are you Eligible? (Inclusion Criteria) Do you have a confirmed solid tumor? Have you had treatment for your disease before? Or is there not a standard treatment available for your disease? Does your cancer continue to grow? Can your cancer not be removed by surgery? Are you 18 years of age or older?
