Veliparib is a potent PARP-1/-2 inhibitor shown to potentiate DNA damaging agents. The ability to potentiate temozolomide (TMZ) and develop a biological marker for PARP inhibition.A potent PARP-1/-2 inhibitor shown to potentiate DNA damaging agents Veliparib is a potent PARP-1/-2 inhibitor shown to potentiate DNA damaging agents. The ability to potentiate temozolomide (TMZ) and develop a biological marker for PARP inhibition. A potent PARP-1/-2 inhibitor shown to potentiate DNA damaging agents