congenital amegakaryocytic thrombocytopenia congenital amegakaryocytic thrombocytopenia congenital amegakaryocytic thrombocytopenia (camt) is a rare inherited disorder caused by mutations in the c-mpl gene. it is often diagnosed in the neonatal period due to petechia. it begins with congenital thrombocytopenia and can progress to aplastic anemia. it is associated with leukemia. congenital amegakaryocytic thrombocytopeniacongenital amegakaryocytic thrombocytopenia is inherited in an autosomal recessive mannerspecialtyhematology presentation the primary manifestations are thrombocytopenia and megakaryocytopenia, or low numbers of platelets and megakaryocytes. there is an absence of megakaryocytes in the bone marrow with no associated physical abnormalities. cause the cause for this disorder appears to be a mutation in the gene for the tpo receptor, c-mpl, despite high levels of serum tpo. in addition, there may be abnormalities with the central nervous system including the cerebrum and cerebellum which could cause symptoms. diagnosis treatment the primary treatment for camt is bone marrow transplantation. bone marrow/stem cell transplant is the only thing that ultimately cures this genetic disease. frequent platelet transfusions are required to ensure that platelet levels do not fall to dangerous levels, although this is not always the case. it is known for patients to continue to create very small numbers of platelets over time.