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Not yet recruitingNCT07933328Updated Nov 12, 2026

Study to Evaluate ALN-CIDEB in Adults With Fibrotic Alcohol-Associated Liver Disease (ALD)

A Phase 2 interventional study of ALN-CIDEB and Placebo in Alcohol-Associated Liver Disease and ALD, sponsored by Regeneron Pharmaceuticals. Not yet recruiting. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2026-11-12.

Sponsored by Regeneron Pharmaceuticals · Phase 2, Interventional, and Treatment

Updated Nov 12, 2026Newly registeredGo to Updates ↓
Phase
Phase 2
Study type
Interventional
Enrollment
120
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Study summary

This study will test a Regeneron study drug called ALN-CIDEB to find out whether it may help treat a liver disease called alcohol-associated liver disease (ALD). ALD is a type of liver disease caused by drinking alcohol at levels that are harmful to the body. The study will also test ALN-CIDEB in participants who are known to have metabolic dysfunction- and alcohol- associated liver disease (MetALD), a subgroup of people that have features of both ALD and metabolic dysfunction-associated steatotic liver disease (MASLD).

The study will compare 2 different dose regimens of ALN-CIDEB with placebo (something that looks like the study drug but doesn't contain any medicine) to understand how well ALN-CIDEB works to lower the amount of fat in the liver.

The study is looking at:

  • What side effects ALN-CIDEB might cause
  • How well ALN-CIDEB works to change liver fat and stiffness of the liver
  • How ALN-CIDEB could affect the liver proteins
02

Conditions studied

  • Alcohol-Associated Liver Disease
  • ALD

Keywords

  • siRNA
  • Small interfering ribonucleic acid
  • Alcoholic Liver Disease
  • Alcohol-Related Liver Disease
  • Alcohol-Induced Liver Disease
  • Alcohol Use Disorder (AUD)
  • Alcohol-Associated Hepatitis (AH)
  • Alcoholic Hepatitis
  • Alcohol-Associated Steatohepatitis (ASH)
  • Alcoholic Steatohepatitis
  • Alcohol-Associated Steatosis
  • Alcoholic Fatty Liver
  • Hepatic Steatosis
  • Fatty Liver Disease
  • Liver Fibrosis
  • Hepatic Fibrosis
  • Cirrhosis
  • Alcohol-Associated Cirrhosis
  • Alcoholic Cirrhosis
  • Chronic Liver Disease
  • End-Stage Liver Disease
  • Portal Hypertension
  • Moderate Fibrosis
  • Advanced Fibrosis
  • Acute-on-Chronic Liver Failure (ACLF)
  • Liver Disease from Alcohol
  • Alcohol-Related Liver Damage
  • Metabolic dysfunction-associated steatohepatitis (MASH)
  • Metabolic dysfunction- and alcohol- associated liver disease (MetALD)
03

In context

Liver Diseases, Alcoholic

73 studies on the registry are indexed under Liver Diseases, Alcoholic; 24 are open to participants now.

This study's planned enrollment of 120 is above the median of 85 across 43 interventional studies indexed under Liver Diseases, Alcoholic.

Browse Liver Diseases, Alcoholic studies →

Lead sponsor

Regeneron Pharmaceuticals is the lead sponsor of 412 studies on the registry; 90 are open to participants now.

Of its 126 completed or terminated interventional studies of FDA-regulated products, 79 (63%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Key Inclusion Criteria:

  1. Has a diagnosis of alcohol-associated liver disease (with or without MetALD), as determined by the investigator
  2. Has a liver stiffness measurement ≥7 and \<20 kilopascal (kPa) by FibroScan at Screening Visit 1
  3. Has a controlled attenuation parameter ≥285 decibels per meter (dB/m) by FibroScan at Screening Visit 1
  4. Has liver fat content ≥8.5% by MRI-PDFF at Screening Visit 2

Key Exclusion Criteria:

  1. Has known chronic liver disease other than MetALD or ALD, as determined by the investigator and as defined in the protocol
  2. Has history of or current alcohol-associated hepatitis (AH) at screening, as determined by the investigator

NOTE: Other Protocol-defined Inclusion/Exclusion Criteria Apply

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
120 participants (estimated)

Study arms

  • Experimental
    ALN-CIDEB Dose Level 1

    Drug: ALN-CIDEB

  • Experimental
    ALN-CIDEB Dose Level 2

    Drug: ALN-CIDEB

  • Placebo comparator
    Placebo

    Drug: Placebo

Interventions

  • DrugALN-CIDEB

    Administered per the protocol

  • DrugPlacebo

    Administered per the protocol

06

What researchers measure

Primary outcomes

  1. Percent Change from Baseline in Liver Fat by Magnetic Resonance Imaging-Proton Density Fat fraction (MRI-PDFF)

    Time frame: At Week 52

  2. Occurrence of Treatment Emergent Adverse Events (TEAEs)

    Time frame: Through Week 64

  3. Severity of TEAEs

    Time frame: Through Week 64

Secondary outcomes

  1. Change from Baseline in Aspartate Aminotransferase (AST)

    Time frame: Through Week 64

  2. Change from Baseline in Alanine Aminotransferase (ALT)

    Time frame: Through Week 64

  3. Change from Baseline in FibroScan Liver Stiffness Measurement (LSM) by Vibration Controlled Transient Elastography (VCTE)

    Time frame: Through Week 52

  4. Change from Baseline in Enhanced Liver Fibrosis (ELF)

    Time frame: Through Week 52

  5. Change from Baseline in FibroScan Controlled Attenuation Parameter (CAP)

    Time frame: Through Week 52

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: Yes — All Individual Patient Data (IPD) that underlie publicly available results will be considered for sharing.

Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Clinical study report, Analytic code

Time frame: When Regeneron has: received marketing authorization from major health authorities (e.g., FDA, European Medicines Agency (EMA), Pharmaceuticals and Medical Devices Agency (PMDA), etc.) for the product and indication or has globally discontinued development of the product for all indications on or after April 2020 and has no plans for future development made the study results publicly available (e.g., scientific publication, scientific conference, clinical trial registry) the legal authority to share the data, and ensured the ability to protect participant privacy

Access criteria: Qualified researchers can submit a proposal for access to individual patient or aggregate level data from a Regeneron-sponsored clinical trial through Vivli. Regeneron's Independent Research Request Evaluation Criteria can be found at: https://www.regeneron.com/sites/default/files/Regeneron-External-Data-Sharing-Policy-and-Independent-Research-Request-Evaluation-Criteria.pdf

Data sharing details ↗ · vivli.org

No publications or documents are linked to this record.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Dec 2026; primary completion for May 2029, 28 months later.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 5, 2026
First posted
Nov 12, 2026
StartEst.
Dec 9, 2026
Primary completionEst.
May 7, 2029
CompletionEst.
Jul 28, 2029
Last update
Nov 12, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Registered
First appeared on the registry. No changes since
Nov 12, 2026
Show all 1 update
  1. Nov 12, 2026
    First appeared on the registry

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07933328
Responsible party
Sponsor
First posted
Nov 12, 2026
Start date
Dec 9, 2026 (estimated)
Primary completion
May 7, 2029 (estimated)
Completion
Jul 28, 2029 (estimated)
Last update
Nov 12, 2026

Study contacts

Clinical Trials Administrator
Contact
clinicaltrials@regeneron.com
844-734-6643
Clinical Trial Management
study director · Regeneron Pharmaceuticals

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.

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