Provided herein are methods, kits, and pharmaceutical compositions that include a PI3 kinase inhibitor for treating cancers or hematologic disorders. Provided herein are methods, compositions, and kits for treating or preventing cancers or diseases, such as hematologic malignancies, which have a high expression level of one or more isoform (s) of PI3K (e.g., PI3K-δ and/or PI3K-γ). In one embodiment, the methods, compositions, and kits provided herein relate to administering an isoform-selective PI3K modulator.
