Provided herein are methods of using (S)-2-(2,6-dioxopiperidin-3-yl)-4-((2-fluoro-4-((3-morpholinoazetidin-1-yl)methyl)benzyl)amino)
isoindoline-1,3-dione, or an
enantiomer, mixture of enantiomers,
tautomer, isotopolog, or pharmaceutically acceptable salt thereof, in combination with a second
active agent for treating, preventing or managing hematological malignancies. The second
active agent is one or more of an
HDAC inhibitor, a BCL2 inhibitor, a BTK inhibitor, an mTOR inhibitor, a PI3K inhibitor, a PKCβ inhibitor, a
SYK inhibitor, a JAK2 inhibitor, an
Aurora kinase inhibitor, an EZH2 inhibitor, a
BET inhibitor, a hypomethylating agent, a DOT1L inhibitor, a HAT inhibitor, a WDR5 inhibitor, a DNMT1 inhibitor, an LSD-1 inhibitor, a G9A inhibitor, a PRMT5 inhibitor, a BRD inhibitor, a SUV420H1 / H2 inhibitor, a CARM1 inhibitor, a PLK1 inhibitor, an NEK2 inhibitor, an
MEK inhibitor, a PHF19 inhibitor, a PIM inhibitor, an IGF-1R inhibitor, an XPO1 inhibitor, a BIRC5 inhibitor, or a
chemotherapy.