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Taking people in United StatesPhase 2

Testing ALN-CIDEB for fatty liver disease with liver scarring in adults

Tests the study drug ALN-CIDEB against placebo in adults with liver scarring from MASH.

Plain-language title generated from the registry record
Registry title: Study to Evaluate ALN-CIDEB in Adults With Fibrotic Metabolic Dysfunction-Associated Steatohepatitis (MASH)

Key facts

Where
Arlington, Austin, Dallas, Danville, Doral, Fort Myers, Georgetown, Houston, Indianapolis, Marrero, Metairie, Miami, Nashville, Pasadena, Rialto, San Antonio, Sugar Land, Topeka, and Tucson, United StatesSee the 22 sites
Phase
Phase 2

Could this be for you?

Answer for yourself. This is not a decision: only the study team can say whether you can take part.

  • Are you between 18 and 75 years old?

Source: NCT07631637, who can take part

Where in United States

  • Texas Clinical Research Institute, LLCArlington, United StatesTaking people
  • American Research CorporationAustin, United StatesTaking people
  • Methodist Dallas Medical CenterDallas, United StatesTaking people
  • Geisinger Medical CenterDanville, United StatesTaking people
  • Universal Axon Clinical ResearchDoral, United StatesTaking people
  • Southwest General Healthcare CenterFort Myers, United StatesTaking people
  • Advanced Medical TrialsGeorgetown, United StatesTaking people
  • Pioneer Research Solutions, Inc.Houston, United StatesTaking people
  • Indiana University School of MedicineIndianapolis, United StatesTaking people
  • Tandem Clinical ResearchMarrero, United StatesTaking people
  • Tandem Clinical ResearchMetairie, United StatesTaking people
  • Genoma Research Group, Inc.Miami, United StatesTaking people
  • Med Research of Florida, LLCMiami, United StatesTaking people
  • Quality Medical Research - NashvilleNashville, United StatesTaking people
  • California Liver Research InstitutePasadena, United StatesTaking people
  • Inland Empire Clinical TrialsRialto, United StatesTaking people
  • American Research Corporation at the Texas Liver InstituteSan Antonio, United StatesTaking people
  • Siena Research NetworkSugar Land, United StatesTaking people
  • Kansas Medical ClinicTopeka, United StatesTaking people
  • Adobe Clinical ResearchTucson, United StatesTaking people
  • Del Sol Research Management, LLCTucson, United StatesTaking people
  • The Institute for Liver Health II LLC dba Arizona Liver HealthTucson, United StatesTaking people

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?
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Trial details

Who runs it
Regeneron Pharmaceuticals
Trial code
NCT07631637EU 2026-525916-33-00
Record updated
9 November 2026
Original description
This study will test a Regeneron study drug called ALN-CIDEB to find out whether it may help treat a liver disease called MASH.Read full original descriptionShow less

A Phase 2b, Randomized, Double-Blind, Placebo-Controlled Study of ALN-CIDEB in Adults With Fibrotic Metabolic Dysfunction-Associated Steatohepatitis (MASH)

This study will test a Regeneron study drug called ALN-CIDEB to find out whether it may help treat a liver disease called MASH.

In this study, researchers are looking at the effect of ALN-CIDEB on reducing liver fat, liver injury, and liver scarring. The study will compare ALN-CIDEB with placebo 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, liver injury, and liver scarring * How the body and the liver change after having ALN-CIDEB, which can help researchers understand why ALN-CIDEB works better for some people than others

Inclusion: A diagnosis of MASH documented in the participant's medical history, or a clinical suspicion of MASH based on non-invasive biomarkers and clinical risk factors, including having a history of 1 or more elements of metabolic syndrome as described in the protocol; Screening percutaneous liver biopsy demonstrating a NAFLD Activity Score (NAS) ≥4 and fibrosis stage F2 or F3 as described in the protocol; Has a FibroScan Aspartate aminotransferase (FAST) score >0.35 either at Screening Visit 1 or within approximately 3 months of Screening Visit 1 as described in the protocol.

Exclusion: Prior or current suspected or known drug-induced liver injury within approximately 1 year prior to Screening Visit 1; Prior, current, or planned future use of a Glucagon-Like Peptide-1 (GLP-1) receptor agonist-based therapy or any medication approved for the treatment of MASH unless used at a generally stable dose and regimen since at least 3 months prior to Screening Visit 1 or the qualifying historical liver biopsy and use is continued throughout the screening period with no change to the dose or regimen anticipated during the treatment period as described in the protocol; NOTE: Other Protocol-defined Inclusion/Exclusion Criteria Apply; Known chronic liver disease other than Metabolic dysfunction-Associated Steatotic Liver Disease (MASLD), as determined by the investigator as described in the protocol; History of liver transplantation, current placement on a liver transplant list, or MELD score >12; Known history of alcohol or other substance abuse within the last year or at any time during screening based on investigator's discretion.

ClinicalTrials.gov NCT07631637 · EU CTIS 2026-525916-33-00

Under construction, not live – Study to Evaluate ALN-CIDEB in Adults With Fibrotic Metabolic Dysfunction-Associated Steatohepatitis (MASH) (NCT07631637) – Frontlight Research