Hematuria, benign familialHemochromatosisHemolytic anemia due to G6PD deficiency (Glucose-6-phosphate dehydrogenase deficiency)Hemolytic anemia, CD59-mediated, with or without immune-mediated polyneuropathyHemophagocytic lymphohistiocytosis, familial, 2Hemophilia AHemophilia BHirschsprung disease, susceptibility to, 1Huntington diseaseHydatidiform moleHypercholesterolemia, familialHyperekplexia, hereditary 1, autosomal dominant or recessiveHyperinsulinemic hypoglycemia, familial, 1Hyperoxaluria, primary, type 1Hyperphenylalaninemia, BH4-deficient, CHyperuricemic nephropathy, familial juvenile 1Hypomagnesemia 3, renal Hypomagnesemia 5, renal, with ocular involvement Hypophosphatasia, childhoodHypotrichosis 4