beta
Trial Radar AI
One study matched filter criteria
Card View

Fibrosis Lessens After Metabolic Surgery (FLAMES) Phase 4 120 Randomized

Recruiting
Clinical Trial NCT06374875 (FLAMES) is designed to study Treatment for Metabolic Dysfunction-associated Steatotic Liver Disease (MASLD), Non-Alcoholic Fatty Liver Disease, Metabolic Dysfunction-Associated Steatohepatitis (MASH), Liver Fibrosis, Obesity. It is a Phase 4 interventional study that is recruiting, having started on July 11, 2024, with plans to enroll 120 participants. Led by Ali Aminian, it is expected to complete by December 31, 2029. The latest data from ClinicalTrials.gov was last updated on August 22, 2025.
Brief Summary
Metabolic dysfunction-associated steatotic liver disease (MASLD), formerly known as non-alcoholic fatty liver disease (NAFLD), a major global public health concern, is commonly associated with obesity, diabetes, and dyslipidemia. MASLD is currently the most common cause of chronic liver disease affecting about 80% of people with obesity, ranging from simple fat deposits in the liver to Metabolic Dysfunction-Associate...Show More
Detailed Description
FLAMES (Fibrosis Lessens After Metabolic Surgery) is a 2-arm randomized, controlled, pathologist-blinded multicenter study with 2 parallel groups of patients with MASH, liver fibrosis, and obesity who will either receive metabolic surgery or incretin-based therapies (semaglutide \[injection or oral\], tirzepatide \[injection\], or liraglutide \[injection\]) for 2 years to assess the effects of advanced surgical and m...Show More
Official Title

A Prospective Multicenter International Randomized Controlled Trial Comparing Surgical and Medical Therapies in the Treatment of Advanced Metabolic Dysfunction Associated Steatohepatitis

Conditions
Metabolic Dysfunction-associated Steatotic Liver Disease (MASLD)Non-Alcoholic Fatty Liver DiseaseMetabolic Dysfunction-Associated Steatohepatitis (MASH)Liver FibrosisObesity
Other Study IDs
  • FLAMES
  • 24-213
NCT ID Number
Start Date (Actual)
2024-07-11
Last Update Posted
2025-08-22
Completion Date (Estimated)
2029-12-31
Enrollment (Estimated)
120
Study Type
Interventional
PHASE
Phase 4
Status
Recruiting
Primary Purpose
Treatment
Design Allocation
Randomized
Interventional Model
Parallel
Masking
Single
Arms / Interventions
Participant Group/ArmIntervention/Treatment
Active ComparatorMetabolic Surgery
FLAMES will examine the class effect (not the specific procedure effect) of metabolic surgery. The study is not intended to compare Roux-en-Y Gastric Bypass (RYGB) vs Sleeve Gastrectomy (SG) head-to-head. RYGB and SG constitute one group as a metabolic surgery group. Assignment of RYGB or SG is not based on a randomized design. Each patient and surgical team will make a shared decision about the most appropriate surg...Show More
Metabolic surgery
Patients receive either RYGB or SG. The surgical risk, differential impact of each procedure on body weight and other obesity-related diseases, presence of other medical and mental problems, patient's behavioral factors (e.g., postoperative compliance, active smoking), medications, and goals will be considered when the patient and local medical team make a shared decision about the most appropriate surgical procedure
Active ComparatorIncretin-Based Therapy
Three incretin-based medications that have been approved for treatment of obesity including liraglutide, semaglutide, or tirzepatide will be used in the nonsurgical group. The FLAMES will examine the class effect (not the specific drug effect) of incretin-based therapies. The study is not intended to compare semaglutide vs tirzepatide vs liraglutide head-to-head.
Incretin-Based Therapy
Three incretin-based medications that have been approved for treatment of obesity including liraglutide, semaglutide, or tirzepatide will be used in the nonsurgical group. Any of these 3 medications (in the injection or oral from) based on availability in each country, access, and clinical indications can be used. If possible, patients will be placed on high-dose tirzepatide (Mounjaro or Zepbound 15 mg once weekly in...Show More
Primary Outcome Measures
Outcome MeasureMeasure DescriptionTime Frame
Improvement of at least 1 fibrosis stage of the Kleiner fibrosis classification and no worsening of MASH in the repeat liver biopsy.
Development of hepatic decompensation events including ascites (requiring treatment including diuretics), spontaneous bacterial peritonitis, hepatic encephalopathy (requiring treatment or hospitalization), or bleeding esophageal varices, and all-cause mortality will be counted as a treatment failure with no need for repeating liver biopsy.
Through study completion, 2 years
Secondary Outcome Measures
Outcome MeasureMeasure DescriptionTime Frame
MASH resolution in the repeat liver biopsy
MASH resolution defined as no hepatocyte ballooning (score of 0 according to the NASH CRN criteria), no more than mild residual inflammatory cells (score of 0 or 1), without worsening of liver fibrosis stage in the repeat liver biopsy
Through study completion, 2 years
MASH resolution and fibrosis improvement in the repeat liver biopsy
Presence of both MASH resolution and fibrosis improvement in the repeat liver biopsy
Through study completion, 2 years
Fibrosis progression in the repeat liver biopsy
Defined as worsening of at least 1 fibrosis stage of the Kleiner fibrosis classification in the repeat liver biopsy among patients who did not have F4 in the baseline liver biopsy
Through study completion, 2 years
Average Weight loss percentage
Mean percentage weight loss from baseline
Through study completion, 2 years
Disease-specific Quality of Life (QoL)
Change from baseline in score of a disease-specific QoL instrument: Chronic Liver Disease Questionnaire (CLDQ) for NASH (CLDQ-NASH). This instrument collects data on 36 items grouped into 6 domains: abdominal symptoms, activity/energy, emotional health, fatigue, systemic symptoms, and worry. In all domains, greater scores (between 1-7) reflect better health, and the average of the domain scores yields the total CLDQ-NASH score. Research coordinator completes the survey with the patient.
Through study completion, 2 years
Participation Assistant
Eligibility Criteria

Eligible Ages
Adult, Older Adult
Minimum Age
18 Years
Eligible Sexes
All
Accepts Healthy Volunteers
Yes

Entry into the study would require that the patient:

  1. Is a candidate for general anesthesia

  2. Is eligible for metabolic surgery (RYGB or SG) based on the ASMBS/IFSO 2022 guidelines

  3. Has insurance coverage for metabolic surgery (the requirements may vary in each country)

  4. Is ≥18 and ≤75 years old at the time of signing the informed consent

  5. Has a BMI ≥35 and ≤70 kg/m2 at the time of first study visit

  6. FIB-4 ≥ 1.3

  7. At least one of the following 5 criteria suggesting presence of advanced fibrosis:

    • LSM ≥ 12 kPa by VCTE using FibroScan®
    • LSM ≥ 12 kPa by SWE
    • LSM ≥ 1.7 m/s by ARFI
    • LSM ≥ 3.63 kPa MRE
    • ELF score ≥ 9.8
  8. Patients with and without T2DM are eligible for the study. Patients with T2DM should have been on a stable dose of anti-diabetic medication (including insulin but not semaglutide or tirzepatide or liraglutide) for at least 3 months prior to entry, with glycated hemoglobin (HbA1c) ≤12%.

  9. Self-reported stable weight in 6 months before the first study visit (no weight loss >10% within 6 months prior to the first study visit)

    a. In patients with a historical noninvasive tests or liver biopsy, weight loss of no more than 10% is allowed from 6 months prior to the historical tests until the first study visit

  10. Has the ability and willingness to participate in the study, provide informed consent, and agree to any of the arms involved in the study

  11. Can understand the options and comply with the requirements of each arm, including one liver biopsy performed during the screening period (if no adequate biopsy within 12 months before screening is available) and one liver biopsy after 2-years

  12. Has a negative urine pregnancy test at the first and at the randomization visits for women of childbearing potential.

  13. Women of childbearing age must agree to use reliable method of contraception for 2 years

Patients who meet the following criteria will be excluded from the study:

  1. Known history of other chronic liver diseases (drug induced, viral hepatitis, autoimmune, and genetic):

    • Hepatitis B as detected by presence of hepatitis B surface antigen (HBsAg)
    • Hepatitis C as detected by presence of hepatitis C virus (HCV) RNA (in case the screening test for hepatitis C is positive, the confirmative test is decisive)
    • Autoimmune liver disease as diagnosed by antibodies or compatible liver histology
    • Primary biliary cirrhosis as defined by the presence of at least 2 criteria (elevated alkaline phosphatase, presence of anti-mitochondrial antibody, and histologic evidence of nonsuppurative destructive cholangitis and destruction of interlobular bile ducts)
    • Primary sclerosing cholangitis
    • Wilson's disease as diagnosed by low ceruloplasmin or compatible liver histology
    • Alpha-1-antitrypsin deficiency as diagnosed by alpha1-antitrypsin level or liver histology
    • Hemochromatosis as diagnosed by HFE mutations (C282Y, H63D), ferritin and transferrin saturation levels, or presence of 3+ or 4+ stainable iron on liver biopsy
    • Drug-induced liver disease diagnosed by medical history
    • Known bile duct obstruction
    • Suspected or proven liver cancer
  2. Weight change >10% within 6 months prior to the first study visit or prior to the historical liver biopsy

  3. Treatment with semaglutide, tirzepatide, or liraglutide (for obesity or for T2DM) <90 days before the first study visit.

    • However, patients are allowed to participate if they have been on a low dose (or are on older generation GLP-1 agonists) and have lost less than 10% of their body weight since starting the medication.

  4. Type 1 diabetes or autoimmune diabetes

  5. Known cases of human immunodeficiency virus infection

  6. Prior bariatric and metabolic surgery of any kind

    • Reversed procedures such as gastric band or intragastric balloon that have been removed at least 3 months prior to the first study visit are allowed.

  7. Prior complex foregut surgery including any esophageal and gastric surgeries, anti-reflux procedures, biliary diversion, and complex trauma surgery

  8. Any surgery requiring general anesthesia within 1 month prior to signing the consent

  9. History of solid organ transplant

  10. Severe pulmonary disease defined as FEV1 < 50% of predicted value

  11. Significant cardiac or atherosclerotic disease (planned to undergo cardiac, coronary, carotid, or peripheral artery revascularization procedures in the next 12 months)

  12. Severe uncompensated cardiopulmonary disease leading to American Society of Anesthesiologists Class IV or V

  13. Classified as New York Heart Association Class IV

  14. Left ventricular ejection fraction <25% at the time of screening

  15. Myocardial infarction, unstable angina, stroke, heart surgery, coronary stent placement in the past 6 months

  16. Chronic renal insufficiency with eGFR below 30 mL/min/1.73 m2, or being on dialysis

  17. Presence of large hiatal hernia (>7 cm)

  18. Presence of Crohn's disease

  19. Psychiatric disorders including (but not limited to) dementia, active psychosis, severe depression requiring 3 or more medications, history of suicide attempts, active alcohol, or substance abuse within the previous 12 months that in the opinion of the investigators could disqualify the patient from metabolic surgery

  20. Pregnancy, the intention of becoming pregnant, or not using adequate contraceptive measures

  21. Breastfeeding

  22. Diagnosis of malignancy within the preceding 3 years (except squamous cell and basal cell cancer of the skin)

  23. Anemia defined as hemoglobin less than 9 g/dL

  24. On therapeutic dose of anticoagulants such as warfarin or direct oral anticoagulants (DOACs)

  25. Known history of clotting disorders, including pulmonary embolus and deep vein thrombosis

  26. Clinical judgment that life expectancy is less than 3 years

  27. Use of investigational therapy within 3 months prior to signing the consent

  28. History of pancreatic carcinoma

  29. Acute pancreatitis < 180 days before screening

  30. History or presence of chronic pancreatitis

  31. Presence of concerning thyroid nodule

  32. Uncontrolled thyroid disease: thyroid stimulating hormone (TSH) > 6.0 mIU/L or < 0.1 mIU/L before the first study visit

    • Patients receiving treatment for hypothyroidism can be included if their thyroid hormone replacement dose has been stable for at least 3 months.
    • Patients whose TSH is outside the rang but they have normal levels of thyroid hormones can be included.
  33. A personal or family history of medullary thyroid carcinoma (MTC) or in patients with Multiple Endocrine Neoplasia syndrome type 2 (MEN 2)

  34. Evidence or history of ascites or spontaneous bacterial peritonitis that require(d) treatment

    • Trace ascites identified only by an abdominal imaging without other evidence of clinically significant portal hypertension and esophageal varices is not an exclusion criterion.

  35. Evidence or history of hepatic encephalopathy

  36. Evidence or history of variceal bleeding

  37. Evidence or history of portosplenic vein thrombosis

  38. Current or history of significant alcohol consumption for a period of more than 3 consecutive months within 1 year prior to the first study visit.

    • Defined as more than 14 units/week for females (>1 drink per day) and more than 21 units/week for males (>2 drinks per day) on average, where one unit of alcohol is equivalent to a 12-oz beer, 4-ounce glass of wine, or 1-ounce shot of hard liquor.

  39. Treatment with medications (for more than 14 consecutive days) with known effect on liver steatosis (e.g., treatment with systemic corticosteroids \[oral or intravenous\], methotrexate, tamoxifen, valproic acid, amiodarone, or tetracycline) in the 3 months prior to the first study visit (or historical liver biopsy).

  40. ALT or AST or Alkaline phosphatase >200 U/L

  41. Recurrent major hypoglycemia or hypoglycemic unawareness

  42. Inability to safely obtain a liver biopsy

  43. Any condition or major illness that, in the investigator's judgment, places the subject at undue risk by participating in the study

  44. Unable to understand the risks, benefits, and compliance requirements of study

  45. Lack capacity to give informed consent

  46. Plans to move outside the primary location of study (country) within the next 24 months

  47. Known or suspected allergy to semaglutide, tirzepatide, liraglutide, excipients, or related products

  48. Previous participation in this trial and got randomized to one of the study groups but did not proceed.

  49. Hospitalization due to COVID-19 within 2 months prior to screening.

  50. Platelet count <80,000

  51. International Normalized Ratio (INR) >1.7

  52. Child-Pugh score B or C

  53. MELD score ≥15

  54. Upper endoscopy showing gastroesophageal varices

  55. Upper endoscopy showing more than mild portal hypertensive gastropathy

  56. Liver vascular ultrasound (duplex ultrasonography) showing significant portal hypertension characterized by dilated portal vein (>13 mm), biphasic or reverse flow in the portal vein, enlarged paraumbilical veins, splenorenal collaterals, or dilated left and short gastric veins.

    Note: Negative findings on upper endoscopy and liver duplex ultrasound (done within one year of the first study visit for both tests) are necessary to establish eligibility for the FLAMES.

    • Ruling out clinically significant portal hypertension is particularly important in patients with a liver stiffness ≥20 kPa or with a platelet count <150,000 per μL or with a (historical) liver biopsy showing cirrhosis.

    • A subset of patients without having upper endoscopy and liver duplex ultrasound can be eligible for enrollment if their:

      • liver stiffness (by transient elastography using FibroScan®) is between 12 and 15 kPa and their platelet count is >150,000 per μL, or
      • a (historical) liver biopsy showing absence of cirrhosis, or
      • a (historical) HVPG < 5 mmHg
  57. Cross-sectional abdominal imaging (if available historically) indicating presence of large portosystemic collaterals or ascites

    • Splenomegaly alone (in the absence of other radiological and laboratory findings) is not considered to be a sign of clinically significant portal hypertension and is not an exclusion criterion.

  58. HVPG ≥ 12 mmHg (if available historically or if measured at the time of de novo liver biopsy)

  59. Liver biopsy characteristics:

    • F0 in de novo biopsy; Enrollment cap of 20% for F1 in de novo biopsy.
    • F0 and F1 in historical liver biopsy
    • Absence of all three components of MASH (steatosis, hepatocyte ballooning, and lobular inflammation) in patients with F1, F2, and F3
    • Absence of steatosis (<5%) in patients with F4
    • Diagnosis other than MASH
Ali Aminian logoAli Aminian
Sobia Laique, MD logoSobia Laique, MD
Study Responsible Party
Ali Aminian, Sponsor-Investigator, Director of Bariatric and Metabolic Institute, The Cleveland Clinic
Study Central Contact
Contact: Awwab F Hammad, MD, +1 216 444 5022, [email protected]
Contact: Chytaine Hall, 216-445-3983, [email protected]
22 Study Locations in 13 Countries

Arizona

Banner Health Center, Phoenix, Arizona, 85006, United States
Farah Husain, MD, Contact, [email protected]
Not yet recruiting

Indiana

Indiana University, Indianapolis, Indiana, 46202, United States
Dimitrios Stefanidis, MD, PhD, Contact, [email protected]
Not yet recruiting

Minnesota

Mayo Clinic, Rochester, Minnesota, 55905, United States
Omar Ghanem, MD, Contact, [email protected]
Not yet recruiting

Ohio

Cleveland Clinic, Cleveland, Ohio, 44195, United States
Ali Aminian, MD, Contact, [email protected]
Recruiting
McGill University, Montreal, Canada
Amin Andalib, MDCM, MSc, Contact, [email protected]
Not yet recruiting
Hospital Alemão Oswaldo Cruz, São Paulo, Brazil
Ricardo Cohen, MD, Contact, [email protected]
Recruiting
Turku University Hospital, Turku, Finland
Paulina Salminen, MD, PhD, Contact, [email protected]
Not yet recruiting
Sri Aurobindo Institute of Medical Sciences, Indore, India
Mohit Bhandari, MS, DMAS, Contact, [email protected]
Not yet recruiting
The Digestive Health Institute, Mumbai, India
Muffazal Lakdawala, MBBS, M.S., Contact, [email protected]
Not yet recruiting
University College Dublin, Dublin, Ireland
Helen Heneghan, MB BCh BAO, PhD, Contact, [email protected]
Not yet recruiting
Università Cattolica del Sacro Cuore, Milan, Italy
Geltrude Mingrone, M.D. PhD, Contact, [email protected]
Not yet recruiting
Sapienza Università di Roma, Roma, Italy
Giovanni Casella, MD, Contact, [email protected]
Not yet recruiting
Kuwait University, Kuwait City, Kuwait
Mohammad Jamal, MBChB (HONS) MEd, Contact, [email protected]
Not yet recruiting
Instituto Nacional de Ciencias Médicas y Nutrición Salvador, Mexico City, Mexico
Mauricio Sierra, MD, Contact
Not yet recruiting
Hospital Clínic Barcelona, Barcelona, Spain
Josep Vidal, MD, PhD, Contact, [email protected]
Not yet recruiting
Linköping University, Linköping, Sweden
Torsten Olbers, MD, PhD, Contact, [email protected]
Not yet recruiting
Örebro University, Örebro, Sweden
Erik Stenberg, MD, PhD, Contact, [email protected]
Not yet recruiting
Clarunis Universitäres, Basel, Switzerland
Ralph Peterli, Dr. med, Contact, [email protected]
Not yet recruiting
Hôpitaux universitaires de Genève, Geneva, Switzerland
Minoa Jung, PD Dr. med., Contact, [email protected]
Not yet recruiting
Nuffield Health Bristol Hospital, Bristol, United Kingdom
Dimitri Pournaras, PhD, Contact, [email protected]
Not yet recruiting
King's College Hospital, London, United Kingdom
Francesco Rubino, MD, Contact, [email protected]
Not yet recruiting
Queen Mary University, London, United Kingdom
William Alazawi, MB BChir PhD, Contact, [email protected]
Not yet recruiting