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Updated: Jun 30, 2025

A Familial Hypercholesterolemia Human Liver Chimeric Mouse Model Using Induced Pluripotent Stem Cell-derived Hepatocytes
Published on: September 15, 2018
Current and emerging monoclonal antibodies for treating familial hypercholesterolemia in children
M Doortje Reijman1, D Meeike Kusters1, Albert Wiegman1
1Department of Pediatrics, Amsterdam Cardiovascular Sciences, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands.
Insights
Monoclonal antibodies targeting PCSK9 offer advanced lipid-lowering treatment for children with heterozygous familial hypercholesterolemia (HeFH) when standard therapies fail. These treatments, including evolocumab and alirocumab, are safe and effective for managing high LDL-C levels.
Area of Science:
- Cardiovascular Medicine
- Genetics
- Pharmacology
Background:
- Heterozygous familial hypercholesterolemia (HeFH) is a genetic disorder leading to high LDL-C levels and premature cardiovascular disease risk.
- Early identification and treatment in children are crucial for mitigating long-term health consequences.
- Standard lipid-lowering therapies like statins and ezetimibe are not universally effective for all pediatric HeFH patients.
Purpose of the Study:
- To review current and emerging monoclonal antibody therapies for pediatric HeFH.
- To provide an overview of PCSK9 inhibitors for managing HeFH in children.
Main Methods:
- Literature review of available and investigational monoclonal antibodies for HeFH treatment in children.
- Analysis of safety and efficacy data for PCSK9 inhibitors in pediatric populations.
Main Results:
- PCSK9 inhibitors (evolocumab, alirocumab) are effective and safe for children with HeFH when oral therapies are insufficient or not tolerated.
- Evolocumab is approved for ages 10+, and alirocumab for ages 8+.
- High cost necessitates careful patient selection for these advanced therapies.
Conclusions:
- Monoclonal antibodies, particularly PCSK9 inhibitors, represent a vital therapeutic option for children with HeFH unresponsive to standard treatments.
- The use of these agents requires careful consideration of cost-effectiveness and patient selection.
- Continued research and development in this area are essential for improving outcomes in pediatric cardiovascular health.
Introduction:
Heterozygous familial hypercholesterolemia (HeFH) is a common genetic disorder caused by pathogenic variants in the LDL-C metabolism. Lifelong exposure to elevated LDL-C levels leads to a high risk of premature cardiovascular disease. To reduce that risk, children with HeFH should be identified and treated with lipid-lowering therapy. The cornerstone consists of statins and ezetimibe, but not in all patients this lowers the LDL-C levels to treatment targets. For these patients, more intensive lipid-lowering therapy is needed.
Areas Covered:
In this review, we provide an overview of the monoclonal antibodies which are currently available or being tested for treating HeFH in childhood.
Expert Opinion:
Monoclonal antibodies that inhibit PCSK9 are first in line lipid-lowering treatment options if oral statin and ezetimibe therapy are insufficient, due to intolerance or very high baseline LDL-C levels. Both evolocumab and alirocumab have been shown to be safe and effective in children with HeFH. For children, evolocumab has been registered from the age of 10 years old and alirocumab from the age of 8 years old. The costs of these new agents are much higher than oral therapy, which makes it important to only use them in a selected patient population.
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