- ABMDR provides matched unrelated donors for bone marrow or stem cell transplantation to all Armenian and non-Armenian patients worldwide who are suffering from leukemia and other life-threatening blood related illnesses. Due to the unique genetic make-up of Armenians, it is nearly impossible to find suitable matches among the existing international registries. Hence the importance of establishing a registry that would help facilitate recruiting and identifying matched unrelated bone marrow donors for ethnic Armenians.