- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT07621640
Brown Adipose Tissue as a Mechanistic Determinant of Semaglutide Treatment Response in Obesity (BAT-Sema Study) (BAT-Sema)
Brown Adipose Tissue as a Mechanistic Determinant of GLP-1 Receptor Agonist Treatment Response in Adults With Obesity: A Multicenter Prospective Cohort Study Using ¹⁸FDG-PET/CT and Cold Stimulation Protocol
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Descrizione dettagliata
Despite the remarkable efficacy of semaglutide (GLP-1 receptor agonist) in treating obesity, considerable individual variation in treatment response remains unexplained. Brown adipose tissue (BAT) is a metabolically active thermogenic organ that has been implicated in energy expenditure, insulin sensitivity, and cardiometabolic health. We hypothesize that baseline BAT activity, as measured by ¹⁸FDG-PET/CT following individualized cold stimulation, is a mechanistic determinant of semaglutide treatment response in adults with obesity without diabetes.
This multicenter prospective cohort study will enroll 80 adults (40 per site: Hallym University Dongtan Sacred Heart Hospital and Seoul National University Bundang Hospital) with BMI ≥27 kg/m² plus obesity-related comorbidity, or BMI ≥30 kg/m², who are initiating semaglutide therapy. ¹⁸FDG-PET/CT with standardized cold stimulation (water-circulating cooling vest, starting at 16°C, individualized to prevent shivering) will be performed at baseline (V1) and 24 weeks (V7). BAT activity (SUVmax, SUVmean, BAT volume, total metabolic activity) will be quantified per BARCIST 1.0 criteria. Liver fat fraction (MRI-PDFF) and liver stiffness (MR elastography) will be assessed as secondary endpoints. Correlations between baseline BAT parameters and treatment outcomes (% body weight loss, metabolic biomarker changes) will be analyzed.
Tipo di studio
Iscrizione (Stimato)
Fase
- Non applicabile
Contatti e Sedi
Contatto studio
- Nome: Hun Jee Choe Hallym University Dongtan Sacred Heart Hospital, MD, PhD
- Numero di telefono: +82-31-8086-2869
- Email: hunjeechoe@gmail.com
Backup dei contatti dello studio
- Nome: Hye Jeong Lee Hallym University Dongtan Sacred Heart Hospital, CRC
- Numero di telefono: +82-10-4694-3886
- Email: geumzzogi@naver.com
Luoghi di studio
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Gyeonggi-do
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Hwaseong-si, Gyeonggi-do, Corea del Sud, 18450
- Hallym University Dongtan Sacred Heart Hospital
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Contatto:
- Hun Jee Choe Hallym University Dongtan Sacred Heart Hospital, MD, PhD
- Numero di telefono: +82-10-9493-5703
- Email: hunjeechoe@gmail.com
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Seongnam-si, Gyeonggi-do, Corea del Sud, 13620
- Seoul National University Bundang Hospital
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Contatto:
- Soo Lim Seoul National University Bundang Hospital, MD, PhD
- Numero di telefono: +82-10-9766-2706
- Email: limsoo@snu.ac.kr
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Contatto:
- Soo Lim Seoul National University Bundang Hospital, MD, PhD
- Numero di telefono: +82-010-9766-2706
- Email: limsoo@snu.ac.kr
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
- Adulto
- Adulto più anziano
Accetta volontari sani
Descrizione
Inclusion Criteria:
- Age 20-70 years at the time of enrollment
- Initiating semaglutide (Wegovy) treatment for obesity (newly starting treatment)
BMI ≥ 27 kg/m² with at least one weight-related comorbidity:
- Hypertension (SBP ≥130 or DBP ≥80 mmHg, or on antihypertensive medication)
- Dyslipidemia (LDL-C ≥130, TG ≥150, or low HDL-C, or on lipid-lowering medication)
- Non-alcoholic fatty liver disease (NAFLD/MASLD, confirmed by imaging or ALT/AST ≥1.5× ULN)
- Obstructive sleep apnea (AHI ≥5/hr or clinically diagnosed)
- Established cardiovascular disease (CAD, stroke, PAD)
- Obesity-related osteoarthritis of knee or hip with functional impairment OR BMI ≥ 30 kg/m² (regardless of comorbidity)
- Ability and willingness to provide written informed consent
Exclusion Criteria:
- Diagnosis of type 1 or type 2 diabetes mellitus
- History of neck surgery or radiation therapy to the neck
- Use of anti-obesity medications within 1 month prior to enrollment, or current use of beta-adrenergic blocking agents
- Personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia type 2 (MEN2)
- Active malignancy, severe renal disease (eGFR <30 mL/min/1.73m²), severe hepatic disease, or other severe endocrine disorders
- Pregnancy or breastfeeding
- Severe psychiatric illness or cognitive impairment precluding informed consent
- Contraindication to MRI (pacemaker, cochlear implant, non-MRI-compatible implants)
- Severe claustrophobia
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Scienza basilare
- Assegnazione: N / A
- Modello interventistico: Assegnazione di gruppo singolo
- Mascheramento: Nessuno (etichetta aperta)
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
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Sperimentale: Semaglutide + BAT Evaluation
Adults with obesity initiating semaglutide (0.25 mg → 2.4 mg over 20 weeks, maintained for 4 weeks; total 24 weeks).
At baseline and 24 weeks, ¹⁸FDG-PET/CT with individualized cold stimulation (water-circulating cooling vest at 16°C, 60 minutes) and liver MRI (PDFF + MRE) are performed.
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Once-weekly subcutaneous injection, titrated from 0.25 mg to 2.4 mg over 20 weeks per standard protocol.
Standard of care treatment for obesity.
Whole-body ¹⁸FDG-PET/CT (5.18 MBq/kg, max 370 MBq) after 60-minute individualized cold stimulation using a water-circulating cooling vest (Polar Products Arctic Chiller, starting 16°C).
Performed at baseline (V1) and 24 weeks (V7).
BAT activity quantified per BARCIST 1.0.
Hepatic proton density fat fraction (MRI-PDFF) and liver stiffness by MR elastography (MRE) using Siemens MAGNETOM Vida 3T.
Performed at baseline (V1) and 24 weeks (V7).
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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Correlation between baseline BAT metabolic activity (SUVmean and BAT volume on ¹⁸FDG-PET/CT) and percentage body weight loss at 24 weeks of semaglutide treatment
Lasso di tempo: Baseline to 24 weeks
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: Pearson (or Spearman) correlation coefficient between baseline BAT parameters (SUVmean, BAT volume, total metabolic activity per BARCIST 1.0) and % body weight loss after 24 weeks of semaglutide therapy (0.25 mg escalated to 2.4 mg).
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Baseline to 24 weeks
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Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Change in waist circumference
Lasso di tempo: Baseline to 24 weeks
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Baseline to 24 weeks
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Change in body weight (kg)
Lasso di tempo: Baseline to 24 weeks
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Baseline to 24 weeks
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Change in Body Mass Index (BMI)
Lasso di tempo: Baseline to 24 weeks
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Baseline to 24 weeks
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Change in HbA1c (%)
Lasso di tempo: Baseline to 24 weeks
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Baseline to 24 weeks
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Change in fasting glucose (mg/dL)
Lasso di tempo: Baseline to 24 weeks
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Baseline to 24 weeks
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Change in HOMA-IR
Lasso di tempo: Baseline to 24 weeks
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Baseline to 24 weeks
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Change in fasting lipids (LDL-C, HDL-C, TG, TC)
Lasso di tempo: Baseline to 24 weeks
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Baseline to 24 weeks
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Change in body composition by BIA (fat mass, lean mass, skeletal muscle mass)
Lasso di tempo: Baseline to 24 weeks
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Baseline to 24 weeks
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Change in liver fat fraction (MRI-PDFF, %)
Lasso di tempo: Baseline to 24 weeks
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Baseline to 24 weeks
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Change in liver stiffness by MRE (kPa)
Lasso di tempo: Baseline to 24 weeks
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Baseline to 24 weeks
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Change in adipokines (adiponectin, leptin, NEFA)
Lasso di tempo: Baseline to 24 weeks
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Baseline to 24 weeks
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Change in hsCRP
Lasso di tempo: Baseline to 24 weeks
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Baseline to 24 weeks
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BAT-positive rate based on SUVmax at baseline
Lasso di tempo: Baseline
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The percentage of participants determined as brown adipose tissue (BAT)-positive, defined by a maximum standardized uptake value (SUVmax) of 1.5 or higher ($\ge 1.5$) at baseline.
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Baseline
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Change in Quality of life using the Impact of Weight on Quality of Life-Lite Clinical Trials (IWQOL-Lite-CT) total score
Lasso di tempo: Baseline to 24 weeks
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The Impact of Weight on Quality of Life-Lite Clinical Trials (IWQOL-Lite-CT) is a self-report questionnaire used to assess the quality of life in individuals with obesity.
The total score ranges from a minimum of 0 to a maximum of 100, where higher scores indicate a better outcome (better quality of life).
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Baseline to 24 weeks
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Change in Quality of Life using the Short Form-36 Health Survey Version 2 (SF-36v2) domain scores
Lasso di tempo: Baseline to 24 weeks
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The Short Form-36 Health Survey Version 2 (SF-36v2) is a 36-item questionnaire measuring health-related quality of life across 8 domains: Physical Functioning, Role-Physical, Bodily Pain, General Health, Vitality, Social Functioning, Role-Emotional, and Mental Health.
Each domain score ranges from a minimum of 0 to a maximum of 100, where higher scores indicate a better outcome (better health status or higher quality of life).
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Baseline to 24 weeks
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Change in BAT activity (SUVmax, SUVmean, BAT volume, TMA) from baseline to 24 weeks
Lasso di tempo: Baseline to 24 weeks
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Baseline to 24 weeks
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BAT-positive rate based on CT Hounsfield Units (HU) at baseline
Lasso di tempo: Baseline
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The percentage of participants determined as brown adipose tissue (BAT)-positive, defined by Computed Tomography Hounsfield Units (CT HU) within the range of $-250$ to $-50$ at baseline.
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Baseline
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Collaboratori e investigatori
Sponsor
Collaboratori
Studiare le date dei record
Studia le date principali
Inizio studio (Stimato)
Completamento primario (Stimato)
Completamento dello studio (Stimato)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
- Disturbi della nutrizione
- Malattie metaboliche
- Ipernutrizione
- Peso corporeo
- Cambiamenti di peso corporeo
- Disturbi del metabolismo del glucosio
- Resistenza all'insulina
- Iperinsulinismo
- Sovrappeso
- Condizioni patologiche, segni e sintomi
- Malattie nutrizionali e metaboliche
- Segni e sintomi
- Obesità
- Perdita di peso
- Sindrome metabolica
- semaglutide
Altri numeri di identificazione dello studio
- 2026-04-009
- RS-2026-25483260 (Altro numero di sovvenzione/finanziamento: National Research Foundation of Korea)
Piano per i dati dei singoli partecipanti (IPD)
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Descrizione del piano IPD
Informazioni su farmaci e dispositivi, documenti di studio
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Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
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