Molecular Analysis Of Solid Tumors

This study will prospectively characterize the molecular, cellular and genetic properties of primary and metastatic neuroblastoma, osteosarcoma, retinoblastoma, Ewing sarcoma family of tumors, soft tissue sarcomas, adrenocortical tumors and liver malignancies. These cell isolates will be used for gene expression array analysis, genomic analysis by \[SNP\] single nucleotide polymorphism chip, array \[CGH\] comparative genomic hybridization and next generation sequencing, and \[TEM\] transmission electron microscopy analysis. Additionally cell lines and orthotopic xenografts will be created from the obtained tumor specimens. The specificity of TCRs will be examined by comparing paired TCR from peripheral blood and tumor infiltrating CD4+ and CD8+ T cells. Epigenetic studies will be performed looking at the methylation profile of these cells and to investigate the anti-tumor T cell response both pre- and post-PD1 inhibition.