ImmunoGen announces preclinical findings for IMGN779 In preclinical findings reported at EHA, IMGN779 demonstrated potent, targeted activity against primary AML patient cells in vitro. IMGN779 can selectively kill leukemic cells (blasts) while sparing normal hematopoietic stem cells. IMGN779 was found to be highly active against human AML xenografts in vivo, demonstrating potent and targeted activity. IMGN779 was well tolerated without delayed toxicity in animal models. IMGN779 is on track to become the company’s next wholly owned clinical-stage compound. ImmunoGen is preparing to submit the IMGN779 IND in mid-2015.