US Patent 11007222 T cell compositions with improved phenotypic properties

The present invention provides an isolated cell composition, which in some embodiments is suitable for adoptive immunotherapy, as well as methods of manufacturing the cell compositions and methods of treatment with the cell compositions. The composition comprises, in a pharmaceutically acceptable carrier, at least about 106 CD8+ T cells specific for target peptide antigen(s), which comprises T memory stem (TSCM) cells. In various embodiments, the composition is from about 1% to about 100% T memory stem cells, providing for a robust and durable adoptive therapy, as well as providing for T cell engineering advances.