Cytarabine triphosphate (Ara-CTP), an active metabolite of Cytarabine, is a competitive inhibitor of DNA synthesis. Intracellular Cytarabine triphosphate levels can be used to predict chemosensitivity of leukemic blasts to Cytarabine[1].
References
[1] Anderson E, et, al. Intracellular cytarabine triphosphate in circulating blasts post-treatment predicts remission status in patients with acute myeloid leukemia. Exp Hematol. 2019 Jun;74:13-18.e3. DOI:10.1016/j.exphem.2019.04.005
