A role for MMEJ in DSRCT is also suggested by a study demonstrating that PARP1 is commonly expressed in DSRCT and that PARP1 inhibition with olaparib is an effective treatment in the DSRCT cell line JN-DSRCT-1, with an IC50 of 1.38 μM [43]. This evidence concerns the gene PARP1 and desmoplastic small round cell tumor.