| CPC A61K 47/551 (2017.08) [A61K 39/4611 (2023.05); A61K 39/4631 (2023.05); A61K 39/464404 (2023.05); A61K 39/4646 (2023.05); A61P 35/00 (2018.01); C07K 14/705 (2013.01); A61K 2239/38 (2023.05)] | 14 Claims |

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1. A method of treating a patient for cancer, the method comprising
i) administering to the patient at least one dose of a chimeric antigen receptor T cell (CAR T cell) composition comprising CAR T cells comprising a chimeric antigen receptor (CAR) directed to a targeting moiety; and
ii) administering to the patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to the targeting moiety by a linker, wherein the small molecule ligand is folate and wherein the targeting moiety is fluorescein, or a pharmaceutically acceptable salt thereof, fluorescein isothiocyanate (FITC), or NHS-fluorescein, and wherein the compound, or the pharmaceutically acceptable salt thereof, is administered in at least a first dose escalation sequence and a second dose escalation sequence, wherein a full dose of the compound, or the pharmaceutically acceptable salt thereof, is 10 μg/kg to 50 μg/kg of the compound, or the pharmaceutically acceptable salt thereof;
wherein the first dose escalation sequence for the compound, or the pharmaceutically acceptable salt thereof, comprises administering 3 separate escalating doses up to the full dose of the compound on three separate days in a first two-week cycle; and
wherein the second dose escalation sequence for the compound, or the pharmaceutically acceptable salt thereof, comprises administering 3 separate escalating doses up to the full dose of the compound on three separate days in a second two-week cycle,
whereupon the patient is treated for cancer, and wherein the patient is a human.
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