Coexistence of familial dysalbuminemic hyperthyroxinemia with familial hypercholesterolemia and multiple lipoprotein type hyperlipidemia.
Familial dysalbuminemic hyperthyroxinemia (FDH), an autosomal disorder characterized by an increase in serum albumin binding of thyroxine, has been encountered in a family who was also found to have both familial hypercholesterolemia (FHC) and multiple lipoprotein type hyperlipidemia (MLH). One subject with FHC and two subjects with MLH had FDH. Although some of the laboratory parameters in hyperlipidemic patients with FDH were suggestive of hyperthyroidism, the dialyzable free thyroxine concentrations were in the normal range and the patients were clinically euthyroid. The significance of the occurrence of FDH in hyperlipidemic subjects with hypothyroidism has been discussed, especially in regard to the longer time interval that may be needed to achieve an amelioration of the hypothyroid state during treatment with a normal maintenance dose of thyroxine. Treatment of FDH patients with other drugs may require an altered dosage if the drug binds to the atypical albumin fragments characterizing this disorder.[1]References
- Coexistence of familial dysalbuminemic hyperthyroxinemia with familial hypercholesterolemia and multiple lipoprotein type hyperlipidemia. Premachandra, B.N., Wolfe, B., Williams, I.K. Am. J. Med. (1988) [Pubmed]
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