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for people ages 8–17 (full criteria)
at San Francisco, California and other locations
study started
estimated completion:



A multicenter, randomized, double masked, placebo-controlled, parallel treatment groups phase 2 trial of losartan for pediatric nonalcoholic fatty liver disease (NAFLD).

Official Title

Losartan for the Treatment of Pediatric NAFLD (STOP-NAFLD): A Phase 2, Randomized, Placebo-Controlled Clinical Trial


Children ages 8-17 years will be enrolled and treated with losartan (50 mg or 100 mg orally once per day) or matching placebo for 24 weeks. The hypothesis is that losartan will improve serum alanine aminotransferase (ALT) in children with pediatric NAFLD.


NAFLD - Nonalcoholic Fatty Liver Disease Losartan Nonalcoholic Fatty Liver Disease Liver Diseases Fatty Liver Non-alcoholic Fatty Liver Disease


You can join if…

Open to people ages 8–17

  • Age 8-17 years at initial screening interview
  • Histological evidence of NAFLD with or without fibrosis and a NAFLD activity score(NAS) of ≥3, on a liver biopsy obtained no more than 730 days prior to enrollment.
  • Serum ALT at screening ≥ 50 IU/L

You CAN'T join if...

  • Body weight less than 40 kg or greater than 150 kg at screening
  • Significant alcohol consumption or inability to reliably quantify alcohol intake
  • Use of drugs historically associated with NAFLD (amiodarone, methotrexate, systemic glucocorticoids, tetracyclines, tamoxifen, estrogens at doses greater than those used for hormone replacement, anabolic steroids, valproic acid, other known hepatotoxins)for more than 2 consecutive weeks in the past year prior to randomization
  • New treatment with vitamin E or metformin started in the past 90 days or plans to alter the dose or stop over the next the 24 weeks. A stable dose is acceptable.
  • Prior or planned bariatric surgery
  • Uncontrolled diabetes (HbA1c 9.5% or higher)
  • Presence of cirrhosis on liver biopsy
  • History of hypotension or history of orthostatic hypotension
  • Stage 2 Hypertension or >140 systolic or >90 diastolic at screening
  • Current treatment with any antihypertensive medications including all angiotensin converting enzyme (ACE) inhibitors or aliskiren
  • Current treatment with potassium supplements or any drug known to increase potassium
  • Current daily use of nonsteroidal anti-inflammatory drugs (NSAIDs)
  • Current treatment with lithium
  • Platelet counts below 100,000 /mm3
  • Clinical evidence of hepatic decompensation (serum albumin < 3.2 g/dL, international normalized ratio (INR) >1.3, direct bilirubin >1.3 mg/dL, history of esophageal varices, ascites, or hepatic encephalopathy)
  • Evidence of chronic liver disease other than NAFLD:
  • Biopsy consistent with histological evidence of autoimmune hepatitis
  • Serum hepatitis B surface antigen (HBsAg) positive.
  • Serum hepatitis C antibody (anti-HCV) positive.
  • Iron/total iron binding capacity (TIBC) ratio (transferrin saturation) > 45% with histological evidence of iron overload
  • Alpha-1-antitrypsin (A1AT) phenotype/genotype ZZ or SZ
  • Wilson's disease
  • Serum alanine aminotransferase (ALT) greater than 300 IU/L
  • History of biliary diversion
  • History of kidney disease and/or estimated glomerular filtration rate (eGFR) < than 60 mL/min/1.73 m2 using Schwartz Bedside GFR Calculator for Children isotope dilution mass spectroscopy (IDMS)-traceable
  • Known Human Immunodeficiency Virus (HIV) infection
  • Active, serious medical disease with life expectancy less than 5 years
  • Active substance abuse including inhaled or injected drugs, in the year prior to screening
  • Pregnancy, planned pregnancy, potential for pregnancy and unwillingness to use effective birth control during the trial, breast feeding
  • Participation in an IND trial in the 150 days prior to randomization
  • Any other condition which, in the opinion of the investigator, would impede compliance or hinder completion of the study
  • Inability to swallow capsules
  • Known allergy to losartan potassium or other angiotensin receptor blocker
  • Failure of parent or legal guardian to give informed consent or subject to give informed assent


  • University of California, San Francisco not yet accepting patients
    San Francisco, California, 94143, United States
  • University of California, San Diego not yet accepting patients
    San Diego, California, 92103, United States
  • Texas Children's Hospital not yet accepting patients
    Houston, Texas, 77030, United States
  • St. Louis University
    Saint Louis, Missouri, 63104, United States
  • Northwestern Univ-Ann & Robert H. Lurie Children's Hospital of Chicago not yet accepting patients
    Chicago, Illinois, 60611-2605, United States
  • Indiana University not yet accepting patients
    Indianapolis, Indiana, 46202, United States
  • Cincinnati Children's Hospital Medical Center not yet accepting patients
    Cincinnati, Ohio, 45229-3039, United States
  • Emory University not yet accepting patients
    Atlanta, Georgia, 30322, United States
  • University at Buffalo-Women and Children's Hospital of Buffalo not yet accepting patients
    Buffalo, New York, 14222, United States
  • Columbia University not yet accepting patients
    New York, New York, 10032, United States


not yet accepting patients
Start Date
Completion Date
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Nonalcoholic Steatohepatitis Clinical Research Network Centers
The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Phase 2
Lead Scientist
Philip Rosenthal
Study Type
Last Updated
March 14, 2018
I’m interested in this study!