Clofarabin har høj affinitet til et af de aktiverende phosphorylerende enzymer, deoxycytidinkinase, som overstiger affiniteten til det naturlige substrat deoxycytidin.
Clofarabine has high affinity for one of the activating phosphorylating enzymes, deoxycytidine kinase, which exceeds that of the natural substrate, deoxycytidine.