Besides ACP, they include ferroportin disease, congenital sideroblastic anemias, DMT1-deficiency and atransferrinemia (for extensive reviews see Camaschella, 2013; Donker et al., 2014; Brissot et al., 2018). The gene discussed is SLC40A1; the disease is hyperinsulinemic hypoglycemia, familial, 4.