Despite progress in the treatment of T-cell acute lymphoblastic leukemia (T-ALL) has limited treatment options, particularly in the setting of relapsed/refractory disease. Researchers used SHMT1/2 inhibitor RZ-2994 to characterize the effect of inhibiting SHMT1/2 in T-ALL. 

Loss of both SHMT1/2 is necessary for impaired growth and cell cycle arrest, with suppression of SHMT1/2 inhibiting leukemia progression. RZ-2994 also decreases leukemia burden in vivo. RZ-2994 was obtained from Medicilon.