PRINCETON, N.J., Jan. 13, 2021 /PRNewswire/ -- Adastra Pharmaceuticals, Inc., a biopharmaceutical company focused on the development of first-in-class therapeutics for the treatment of cancer, today announced the completion of the Phase 1b clinical trial conducted by the NCI with its lead clinical candidate zotiraciclib (ZTR/TG02), a potent oral cyclin-dependent kinase 9 (CDK9) inhibitor. The trial investigated the safety and efficacy of ZTR, in combination with temozolomide (TMZ), in patients with recurrent high-grade gliomas.