US Patent 11866451 Salts and crystalline forms of a PD-1/PD-L1 inhibitor

This application relates to solid forms and salt forms of the PD-1/PD-L1 inhibitor 4,4′-(((((2,2′-dichloro-[1,1′-biphenyl]-3,3′-diyl)bis(azanediyl))bis(carbonyl))bis(1-methyl-1,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridine-2,5-diyl))bis(ethane-2,1-diyl))bis(bicyclo[2.2.1]heptane-1-carboxylic acid), including processes of preparation thereof, where the solid forms and salt forms are useful in the treatment of various diseases including infectious diseases and cancer.