NGGT006 Gene Therapy for Homozygous Familial Hypercholesterolemia

Plain-language summary

This study examines NGGT006 gene therapy in patients with homozygous familial hypercholesterolaemia. Participants aged 12 to 55 with genetic confirmation of two mutant alleles of the LDL receptor (LDLR) gene can take part, with the first patient required to be 18 or older. It is an Early Phase 1 study and is currently recruiting.

The summary above is a plain-language rendering of the official record. The original English title is shown for reference.

Trial details

Phase

Early Phase 1

Status

Recruiting

Sponsor

First Affiliated Hospital Xi'an Jiaotong University

Intervention

NGGT006

Start date

10/29/2023

Estimated completion

11/1/2028

Countries

China

Related genes

Locations

• Xi'an, China

Eligibility criteria

Criteria are reproduced from the ClinicalTrials.gov record in the original English. Only the trial team can determine eligibility.

Inclusion Criteria:

* 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.
* 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;
* Had been on stable medication for ≥30 days if receiving lipid-lowering therapy (or ≥60 days if receiving alirocumab or evolocumab) prior to screening and not scheduled for addition of new drugs or dose adjustments during the study;
* Agreed to follow a low-fat diet and comply with all study procedures;
* Agreed to maintain a similar exercise volume and intensity to baseline during the study period;
* Agreed to maintain good lifestyle habits;
* No history of alcohol abuse or alcohol dependence (diagnosed as F10 in ICD-10 code);
* No sexual activity for 14 days prior to administration and negative serum pregnancy test in female participants;
* Participants of childbearing potential agreed to use highly effective contraception for at least 365 days from administration of NGGT006;
* No plan of stent implantation within 3 months.

Exclusion Criteria:

* 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) ≥2 × upper limit of normal (ULN) and/or aspartate aminotransferase (AST) ≥2 × 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;
* Diabetes diagnosed within 3 months or with poor control (HbA1c ≥9%);
* Acute or chronic kidney failure;
* Hemoglobin (Hb) ≥120g/L (male), Hb ≥110 (female);
* Abnormal platelet counts or morphology;
* History or laboratory tests suggestive of thrombosis;
* Had contraindications to glucocorticoid (e.g., epilepsy, severe schizophrenia, active peptic ulcer);
* Life expectancy less than 1 year;
* With malignant tumors;
* Liver fibrosis or liver cancer;
* Previous gene therapy treatment;
* Hypersensitivity to AAV or cortisone or immunosuppressants (sirolimus, rituximab, tacrolimus);
* Participation in any other clinical trial within 3 months;
* History of stent implantation within 1 month or myocardial infarction within 3 months;
* Breastfeeding females;
* Any other condition that may not be appropriate for the study in the opinion of the Investigator.