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Assay Method Information

Assay Name:  Biochemical JAK Kinase Assay
Description:  In some embodiments, the additional pharmaceutical agent is a JAK1 and/or JAK2 inhibitor. In some embodiments, the present application provides a method of treating a disease described herein (e.g., a B cell malignancy, such as diffuse B-cell lymphoma) in a patient comprising administering to the patient a compound described herein, or a pharmaceutically acceptable salt thereof, and a JAK1 and/or JAK2 inhibitor. The B cell malignancies can include those described herein and in U.S. Ser. No. 61/976,815, filed Apr. 8, 2014. In some embodiments, the inhibitor of JAK1 and/or JAK2 is 3-cyclopentyl-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]propanenitrile. In some embodiments, the inhibitor of JAK1 and/or JAK2 is (3R)-3-cyclopentyl-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]propanenitrile (ruxolitinib; also known as INCB018424). Ruxolitinib has an IC50 of less than 10 nM at 1 mM ATP (assay J) at JAK1 and JAK2. 3-Cyclopentyl-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]propanenitrile and ruxolitinib can be made by the procedure described in U.S. Pat. No. 7,598,257 (Example 67), filed Dec. 12, 2006, which is incorporated herein by reference in its entirety. In some embodiments, the inhibitor of JAK1 and/or JAK2 is (3R)-3-cyclopentyl-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]propanenitrile phosphoric acid salt.
Affinity data for this assay
 

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