Celyad Oncology SA, formerly Celyad SA is a Belgium-based company. The Company is a clinical-stage biotechnology company focuses on the discovery and development of chimeric antigen receptor T cell (CAR T) therapies for cancer. The Company develops allogeneic and autologous CAR T cell therapy candidates for cancer patients with hematological malignancies and solid tumors. The Company's product, CYAD-101 is a NKG2D receptor-based CAR T, which incorporates non-gene edited allogeneic TIM technology, for the treatment of refractory metastatic colorectal cancer (mCRC). It also develops short hairpin RNA (shRNA)-based allogeneic CAR T candidate CYAD-211 for the treatment of relapsed or refractory multiple myeloma (r/r MM). Its autologous CAR T franchise is evaluating NKG2D receptor CAR T candidate CYAD-02 for the treatment of relapsed or refractory acute myeloid leukemia (r/r AML) and myelodysplastic syndromes (MDS).