A Trial to Learn if Receiving ALN-PNP siRNA is Safe and Well Tolerated, and How it Works in Adult Participants With Nonalcoholic Fatty Liver Disease (NAFLD) and a Genetic Risk Factor

Plain-language summary

This study examines whether the drug ALN-PNP siRNA is safe, well tolerated, and how it works in adults with nonalcoholic fatty liver disease and a risk variant in the PNPLA3 gene (rs738409:G, p.I148M). It enrolled participants aged 18 to 65 whose liver fat content was above a certain level and who met the genetic criteria, with participants receiving either ALN-PNP or placebo. The study was in Phase 1 and has been completed.

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

Trial details

Phase

Phase 1

Status

Completed

Sponsor

Regeneron Pharmaceuticals

Intervention

ALN-PNP, Placebo

Start date

5/21/2024

Estimated completion

7/7/2025

Countries

South Korea

Related genes

Locations

• Cheongju-si, South Korea
• Seongnam-si, South Korea
• Seoul, South Korea
• Seoul, South Korea
• Seoul, South Korea

Eligibility criteria

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

Key Inclusion Criteria:

1. Participants from 18 (or country's legal age of adulthood) to 65 years of age, inclusive, at screening visit 1
2. Body mass index (BMI) from 23.0 kg/m\^2 to 40.0 kg/m\^2, inclusive, for East Asians (including but not limited to South Koreans, Chinese, Taiwanese, and Japanese) and BMI from 27.0 kg/m\^2 to 40.0 kg/m\^2, inclusive, for any other ethnicity at screening visit 1
3. Meets genotype criteria for the rs738409:G PNPLA3 risk allele: homozygotes (for Part A and Part B) or heterozygotes (optional Part C); p.I148M variant (PNPLA3 rs738409:G \[p.I148M\]) at screening visit 1
4. Liver fat content ≥8.5% as measured by MRI-PDFF at screening visit 3
5. Generally stable diet (based on participant's recall) for at least 3 months prior to the screening visit

Key Exclusion Criteria:

1. Evidence of other forms of known chronic liver disease, as defined in the protocol
2. Has a contraindication to MRI examinations, such as persons with cardiac pacemaker and implants made out of metal (for example, cochlear implant, nerve stimulators, magnetic vascular clips, and metallic heart valve), severe claustrophobia, or other contraindications for MRI
3. Is taking a medication to treat a co-morbid condition that is not permitted during the study
4. Has any laboratory parameter assessments at screening, as defined in the protocol
5. History of Type 1 diabetes
6. Bariatric surgery within approximately 5 years prior or planned during the study period
7. Has lost or gained more than 4.0% body weight over the 3 months prior to or during the screening period
8. Has known human immunodeficiency virus (HIV) infection, evidence of current or chronic hepatitis B virus (HBV) infection, or current or chronic hepatitis C virus (HCV) infection, as defined in the protocol
9. Was hospitalized (ie, \>24 hours) for any reason within 30 days of the screening visit

Note: Other protocol defined Inclusion/Exclusion Criteria apply