sickle cell anemia [DOID:10923]
A blood protein disease that is characterized by low number of red blood cells, repeated infections, and periodic episodes of pain, resulting from atypical hemoglobin molecules called hemoglobin S, which can distort red blood cells into a sickle, or crescent, shape.
MHC class II deficiency [DOID:5812]
A severe combined immunodeficiency that is characterized by deficiency of MHC class II molecules that causes lack of immune protection against bacteria, viruses, and fungi and thus causes early death in childhood, and has_material_basis_in autosomal recessive inheritance of mutation in the CIITA, RFX5, RFXANK, and RFXAP genes.
sitosterolemia [DOID:0090019]
An intestinal disease that is characterized by autosomal recessive inheritance of unrestricted intestinal absorption of both cholesterol and plant-derived cholesterol-like molecules resulting in xanthomas, arthralgia, premature atherosclerosis, and hemolytic anemia with stomatocytosis and macrothrombocytopenia that has_material_basis_in homozygous or compound heterozygous mutation in the ABCG8 gene or in the ABCG5 gene, both of which are located on chromosome 2p21.