Rare Association of Kawasaki Disease and Familial Hypercholesterolemia Leads to Severe Cardiovascular Consequences

A 20-year-old male patient with a rare condition, characterized by the simultaneous occurrence of Kawasaki disease and heterozygous familial hypercholesterolemia, has suffered from severe cardiovascular consequences. Despite aggressive treatment, the patient experienced three episodes of myocardial infarction and required two coronary stents and coronary artery bypass graft surgery. This extreme case study has sparked interest among researchers and clinicians, highlighting the need for timely and effective management of patients with this rare combination of conditions.

Key Takeaways:

• Kawasaki disease is an acute febrile systemic vasculitis that primarily affects children, but can also occur in adults, as seen in this case study.
• The condition can lead to coronary artery aneurysms, which can cause severe cardiovascular complications, including myocardial infarction and angina.
• Familial hypercholesterolemia is an autosomal dominant disorder characterized by marked elevation in low-density lipoprotein (LDL) cholesterol, which increases the risk of coronary artery disease and atherosclerosis.
• The combination of Kawasaki disease and heterozygous familial hypercholesterolemia in a young patient has not been reported previously in medical literature.
• Aggressive anti-coagulation and lipid lowering therapy are essential in managing patients with this rare condition to prevent coronary aneurysm thrombosis and atherosclerosis.
• Clinicians must be aware of this rare association and consider genetic testing for familial hypercholesterolemia in patients with Kawasaki disease.
• Management of patients with this condition requires a multidisciplinary approach, involving specialists in cardiology, genetics, and lipidology.

Statistics:

• The patient experienced three episodes of myocardial infarction over an 11-year period.
• He required two coronary stents and underwent coronary artery bypass graft surgery on multiple occasions.
• His LDL cholesterol levels were elevated, which contributed to the development of atherosclerosis and coronary artery disease.
• The patient was diagnosed with heterozygous familial hypercholesterolemia, which is a rare genetic disorder affecting 1 in 250 people worldwide.
• Kawasaki disease affects approximately 5,000 children in the United States each year.

Sources:

• Multiple coronary artery aneurysms in a young patient with Kawasaki disease and heterozygous familial hypercholesterolemia: A case study. Journal of Clinical Lipidology, 2025;19(4):1174-1178.
• NewsRx. New Findings on Coronary Aneurysm Discussed by Researchers at University of Texas Southwestern Medical Center (Multiple coronary artery aneurysms in a young patient with Kawasaki disease and heterozygous familial hypercholesterolemia: A case ...). Cardiovascular Week. September 15, 2025; p 145.