Medicenna Therapeutics Corp, formerly A2 Acquisition Corp, is a Canada-based clinical stage immuno-oncology company. The Company is engaged in developing engineered versions of Interleukin (IL)-2, IL4 and IL13 cytokines called Superkines and Empowered Cytokines (ECs). The Company focuses on commercialization EC and Superkines for the treatment of cancer. The Company's IL4 EC is a drug that targets the Bulk Tumor, Cancer Stem Cells and Immunosuppressive Cells of the Tumor Micro-environment. MDNA55 is the Company's lead product. MDNA55 is being studied in clinical trials for treatment of CNS cancers. The Company's MDNA56 and MDNA57 are its IL-4 carrying a human cell killing payload. MDNA56 is being developed for the treatment of hematopoietic cancers expressing the Type 1 IL-4R, whereas MDNA57 is intended to selectively target solid tumors and non-malignant cells of the tumor micro-environment expressing the Type 2 IL-4R.