About this trial
This is an early phase 1, open-label, single-center, dose-escalation, pilot trial to evaluate the safety and efficacy of an intravenous infusion of NGGT006 in homozygous familial hypercholesterolemia (HoFH) patients with LDLR mutations. NGGT006 is an adeno-associated viral (AAV) vector carrying codon-optimized human LDLR gene, driving the expression of LDLR protein with normal function and promoting the clearance of low-density lipoprotein cholesterol (LDL-C).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Voluntarily sign informed consent form;
Male or female, 12 ≤ age ≤ 55 years (first patient≥ 18 years), diagnosed as homozygous familial hypercholesterolemia with genetic confirmation of two mutant alleles of the LDL receptor (LDLR) gene;
AAV8 neutralizing antibodies can be negative or reduced to negative levels through methods such as plasma exchange or IgG-degrading enzymes.
Untreated LDL-C ≥10 mmol/L (386mg/ dL) or treated LDL-C ≥7 mmol/L (270mg/ dL) together with cutaneous or tendon xanthoma before age 18 years;
Disqualifiers
Positive for hepatitis B surface antigen, hepatitis C, human immunodeficiency virus (HIV) or syphilis test;
Clinically significant abnormalities in liver function test: alanine aminotransferase (ALT) >3 × upper limit of normal (ULN) and/or aspartate aminotransferase (AST) >3 × ULN;
Baseline blood pressure >160/100 mmHg (1 repeat measurement is allowed);
Uncontrolled myocardial infarction or heart failure, or had surgery plan within 1 year;
Trial design
Sequential
Treatments tested in this trial
NGGT006
GeneticSingle intravenous infusion of NGGT006 at dose 1 (7.5e12vg/kg), dose 2 (1.5e13vg/kg) , dose 3 (3e13vg/kg) and dose 4 (4e13vg/kg).
Treatment groups
Trial outcomes
Primary outcomes
Incidence of treatment-related adverse events (AE) and serious adverse events (SAE)
Incidence of AE and SAE, as assessed by physical examinations, clinical laboratory parameters and adverse event reporting
Absolute change and percent change in LDL-C
Change in LDL-C concentration from baseline to week 52
Secondary outcomes
Absolute change and percent change in apoB
Change in lipid concentrations from baseline to week 52
Absolute change and percent change in TC
Change in lipid concentrations from baseline to week 52
Absolute change and percent change in HDL-C
Change in lipid concentrations from baseline to week 52
Absolute change and percent change in TG
Change in lipid concentrations from baseline to week 52
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