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Xanthomas associated with homozygous familial hypercholesterolemia
1Schools of Pharmacy, University of Mississippi, Jackson, Mississippi; Medicine, University of Mississippi, Jackson, Mississippi, USA.
Pharmacotherapy
|December 2, 2009
Summary
Homozygous familial hypercholesterolemia (HFH) is a rare genetic condition. Aggressive treatment including multiple medications and LDL apheresis can significantly lower LDL cholesterol and improve xanthomas in patients with HFH.
Area of Science:
- Cardiology
- Genetics
- Metabolic Disorders
Background:
- Homozygous familial hypercholesterolemia (HFH) is a severe genetic disorder characterized by extremely high low-density lipoprotein cholesterol (LDL-C) levels from birth.
- It affects approximately 1 in a million individuals and is less commonly reported in African-American populations.
- Physical manifestations include tuberous and tendinous xanthomas due to cholesterol deposition.
Observation:
- An 18-year-old African-American female with early-onset HFH presented with significant tuberous and tendinous xanthomas.
- Her LDL-C levels reached 766 mg/dl while on atorvastatin monotherapy.
- Xanthomas were noted on the olecranon processes and hands.
Findings:
- The patient was subsequently treated with a maximal-dose quadruple therapy (atorvastatin, colesevelam, ezetimibe, niacin) combined with twice-monthly LDL apheresis.
- This intensive regimen led to a substantial reduction in LDL-C levels to 184 mg/dl over six years.
- Xanthoma improvement correlated with patient compliance to the cholesterol-lowering regimen.
Implications:
- Aggressive, multi-modal treatment strategies are crucial for managing severe hypercholesterolemia in HFH patients.
- Effective LDL-C reduction can lead to regression of xanthomas and prevention of cardiovascular events.
- This case highlights the importance of early diagnosis and persistent management in rare genetic lipid disorders.
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