Study to Evaluate Efficacy and Safety of Inclisiran in Children With Heterozygous Familial Hypercholesterolemia

Two Part (Double-blind Inclisiran Versus Placebo [Year 1] Followed by Open-label Inclisiran [Year 2]) Randomized Multicenter Study to Evaluate Safety, Tolerability and Efficacy of Inclisiran in Children (6 to Less Than 12 Years) With Heterozygous Familial Hypercholesterolemia and Elevated LDL- Cholesterol

This is a pivotal phase III study designed to evaluate safety, tolerability, and efficacy of inclisiran in children (aged 6 to <12 years) with heterozygous familial hypercholesterolemia (HeFH) and elevated low density lipoprotein cholesterol (LDLC).

This is a two-part (1 year double-blind inclisiran versus placebo / 1 year open-label inclisiran) multicenter study designed to evaluate safety, tolerability, and efficacy of inclisiran in children (aged 6 to <12 years) with heterozygous familial hypercholesterolemia (HeFH) and elevated low density lipoprotein cholesterol (LDL-C) on stable standard of care background lipid-lowering therapy.

Inclusion Criteria:

• Male or female participants, 6 to <12 years of age at screening
• HeFH diagnosed either by genetic testing or on phenotypic criteria
• Fasting LDL-C >130 mg/dL (3.4 mmol/L) at screening
• For participants 8 to <12 years, on an optimal dose of statin (investigator's discretion) unless statin intolerant, with or without other lipid-lowering therapy (e.g. ezetimibe). For participants <8 years, the use of background lipid-lowering treatment is based on investigator's discretion.
• Participants on lipid-lowering therapies (such as statin and/or e.g. ezetimibe) must be on a stable dose for ≥30 days before screening with no planned medication or dose changes during study participation.

Exclusion Criteria:

• Previous treatment (within 90 days of screening) with monoclonal antibodies directed towards PCSK9
• Secondary hypercholesterolemia, e.g. hypothyroidism or nephrotic syndrome
• Homozygous familial hypercholesterolemia (HoFH)
• Body weight <16 kg at the screening and/or randomization (Day 1) visit
• Active liver disease defined as any known current infectious, neoplastic, or metabolic pathology of the liver or unexplained alanine aminotransferase (ALT), aspartate aminotransferase (AST) elevation >3x ULN, or total bilirubin elevation >2x ULN (except patients with Gilbert's syndrome)
• Pregnant or nursing females
• Recent and/or planned use of other investigational medicinal products or devices