Provided herein are formulations and methods of use of 2-(4-chlorophenyl)-N-((2-(2,6- dioxopiperidin-3-yl)-l-oxoisoindolin-5-yl)methyl)-2,2-difluoroacetamide or a stereoisomer or mixture of stereoisomers, pharmaceutically acceptable salt, tautomer, prodrug, solvate, hydrate, co-crystal, clathrate, or polymorph thereof.