The purpose of this study is to find out what dose of tegavivint should be used with children and how well it works when given to patients between the ages of 12 months to 30 years of age with refractory or recurrent solid tumors, lymphomas, desmoid tumors, Ewing Sarcomas, osteosarcomas, liver tumors (HCC and hepatoblastoma), Wilm's tumor and tumors with Wnt pathway aberrations. Tegavivint is experimental because it is not approved by the Food and Drug Administration (FDA) for the treatment of children with refractory or recurrent solid tumors, lymphomas, desmoid tumors, Ewing Sarcomas,...
