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| ID | Type | Description | Link |
|---|---|---|---|
| SWYX:NO. 2026-1026 | Other Identifier | Biomedical Research Ethics Committee of Shandong Provincial Hospital |
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| Name | Class |
|---|---|
| Innovent Biologics, Inc. | OTHER |
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Prediabetes affects millions of adults worldwide and carries a high risk of progression to type 2 diabetes. Mazdutide is a once-weekly injectable drug that activates both GLP-1 and glucagon receptors, lowering blood sugar and body weight simultaneously.
This study (DREAM-PRE) tests whether mazdutide can help adults with prediabetes return to normal blood sugar levels. Approximately 150 adults aged 18-75 years with prediabetes and BMI ≥22 kg/m² will be randomly assigned in equal numbers to one of three groups: mazdutide 4 mg once weekly, mazdutide 6 mg once weekly, or placebo once weekly. All participants also receive standardized diet and exercise guidance throughout the study.
Treatment lasts 24 weeks, followed by 24 weeks of off-drug follow-up to see whether any benefits are maintained. The main question is: what proportion of participants achieve completely normal blood sugar (normal HbA1c, fasting glucose, AND glucose tolerance test) after 24 weeks of treatment? The study is conducted at approximately 10 hospitals across China.
BACKGROUND AND RATIONALE Prediabetes - encompassing impaired fasting glucose (IFG), impaired glucose tolerance (IGT), and elevated HbA1c (5.7-6.4%) - affects an estimated 352 million adults globally, with China bearing the highest absolute burden. Without intervention, approximately 5-10% of individuals with prediabetes progress to type 2 diabetes (T2D) annually. Reversal to Normal Glucose Regulation (NGR) is achievable but underexplored as a primary clinical endpoint.
Mazdutide (IBI362) is a GLP-1 receptor/glucagon receptor (GLP-1R/GCGR) dual agonist. Beyond GLP-1R-mediated glucose-dependent insulin secretion and appetite suppression, GCGR co-agonism enhances hepatic fatty acid oxidation and energy expenditure. This dual mechanism may address the overlapping pathophysiology of prediabetes - beta-cell dysfunction, insulin resistance, ectopic lipid accumulation, and excess adiposity - more comprehensively than GLP-1R monoagonists alone.
SCIENTIFIC RATIONALE FOR DOSE SELECTION Two maintenance doses are evaluated: 4 mg and 6 mg once weekly. Both doses demonstrated clinically meaningful HbA1c reduction and weight loss in prior trials (DREAMS-1, DREAMS-2) in patients with type 2 diabetes. The 4 mg dose represents a potentially efficacious and better-tolerated option, while the 6 mg dose achieves maximal receptor engagement. Comparing both doses against placebo in a prediabetes population allows dose-response characterization and informs optimal dosing for future prevention trials.
DISEASE MODIFICATION HYPOTHESIS The primary endpoint (NGR at Week 24) captures complete metabolic normalization across three glycemic domains simultaneously. Secondary assessment at Week 48 (24 weeks after treatment discontinuation) tests whether treatment induces durable disease modification - restoration of beta-cell function and insulin sensitivity - rather than pharmacological glucose suppression alone. The Disposition Index (product of insulin secretion and insulin sensitivity) serves as the key mechanistic secondary endpoint.
LIFESTYLE INTERVENTION BACKGROUND All participants receive standardized lifestyle intervention consistent with Chinese guidelines for prediabetes management, providing an active background that reflects real-world clinical practice and enhances external validity.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Mazdutide 4 mg | Experimental | Mazdutide 2 mg once weekly subcutaneous injection for 4 weeks (titration), then 4 mg once weekly for 20 weeks. All participants receive standardized lifestyle intervention (dietary modification and aerobic exercise) throughout the 48-week study period. |
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| Mazdutide 6 mg | Experimental | Mazdutide 2 mg once weekly subcutaneous injection for 4 weeks, then 4 mg once weekly for 4 weeks, then 6 mg once weekly for 16 weeks. All participants receive standardized lifestyle intervention throughout the 48-week study period. |
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| Placebo | Placebo Comparator | Matching placebo once weekly subcutaneous injection. Placebo pens are identical to active drug pens in appearance, color, volume, and packaging. The titration schedule mirrors the 6 mg arm (weeks 0-4, 5-8, 9-24) to maintain blinding. All participants receive standardized lifestyle intervention throughout the 48-week study period. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Mazdutide | Drug | GLP-1 receptor/glucagon receptor (GLP-1R/GCGR) dual agonist, administered by subcutaneous injection once weekly using a pre-filled pen device. Arm 1 (4 mg): titration from 2 mg QW (weeks 0-4) to 4 mg QW (weeks 5-24). Arm 2 (6 mg): titration from 2 mg QW (weeks 0-4) to 4 mg QW (weeks 5-8) to 6 mg QW (weeks 9-24). Injection sites: abdomen, anterior-lateral thigh, or lateral upper arm, rotated at each injection. |
| Measure | Description | Time Frame |
|---|---|---|
| Proportion of Participants Achieving Normal Glucose Regulation (NGR) at Week 24 | NGR is defined as simultaneous achievement of all three criteria: HbA1c <5.7%, fasting plasma glucose <6.1 mmol/L, and 75g OGTT 2-hour plasma glucose <7.8 mmol/L, assessed by central laboratory. Missing data imputed by non-responder imputation (NRI). Fixed sequential testing: mazdutide 6 mg vs. placebo first, then mazdutide 4 mg vs. placebo (two-sided alpha=0.05, CMH test stratified by site). | Week 24 |
| Measure | Description | Time Frame |
|---|---|---|
| Change from Baseline in HbA1c | Week 24 and Week 48 | |
| Change from Baseline in Fasting Plasma Glucose | Week 24 and Week 48 | |
| Change from Baseline in OGTT 2-Hour Plasma Glucose |
| Measure | Description | Time Frame |
|---|---|---|
| Difference in Proportion of Participants Achieving NGR Between Mazdutide 6 mg and 4 mg Arms at Week 24 | Post-hoc head-to-head comparison of NGR rates between the mazdutide 6 mg and 4 mg arms at Week 24 and Week 48, assessed by CMH test; reported as risk difference (percentage points) with 95% CI. A monotonic dose-response trend across the three ordered treatment groups (placebo, mazdutide 4 mg, mazdutide 6 mg) is also assessed using the Cochran-Armitage trend test; reported as trend test p-value and NGR proportion per arm. |
Inclusion Criteria:
Voluntarily signed written informed consent prior to any study procedures
Age 18 to 75 years (inclusive) at the time of signing informed consent; male or female
Prediabetes confirmed by central laboratory at screening, meeting at least one of the following criteria per Chinese Diabetes Society (CDS) standards, and not meeting diagnostic criteria for diabetes:
Impaired Glucose Tolerance (IGT): 75g OGTT 2-hour plasma glucose
Impaired Fasting Glucose (IFG): fasting plasma glucose ≥6.1 mmol/L and <7.0 mmol/L
Elevated HbA1c: 5.7% ≤ HbA1c < 6.5% (39-48 mmol/mol)
BMI ≥22.0 kg/m² at screening
Self-reported body weight change <10% within 3 months prior to screening; not currently participating in any organized weight-loss program
Able to understand study requirements, complete all planned visits and examinations, self-administer once-weekly subcutaneous injections, and use the study app for daily monitoring
Exclusion Criteria:
Confirmed diabetes at screening (FPG ≥7.0 mmol/L, OGTT 2h-PG ≥11.1 mmol/L, or HbA1c ≥6.5%); or prior confirmed diagnosis of type 1 diabetes, type 2 diabetes, or other specific types of diabetes. Prior gestational diabetes in whom blood glucose has returned to prediabetes levels after delivery is NOT grounds for exclusion.
Continuous use of any antidiabetic medication for more than 7 days within 3 months prior to screening, including: biguanides (metformin), alpha-glucosidase inhibitors (acarbose, voglibose, miglitol), sulfonylureas (glimepiride, gliclazide, glipizide, glibenclamide), glinides (repaglinide, nateglinide), thiazolidinediones (pioglitazone, rosiglitazone), DPP-4 inhibitors (sitagliptin, saxagliptin, vildagliptin, linagliptin, alogliptin), SGLT2 inhibitors (dapagliflozin, empagliflozin, canagliflozin, ertugliflozin), insulin (any formulation), or traditional Chinese medicine with confirmed glucose-lowering indication.
Use of any of the following within 6 months prior to screening (regardless of duration): GLP-1 receptor agonists (semaglutide, liraglutide, dulaglutide, exenatide, lixisenatide, benaglutide, etc.), GIP/GLP-1 dual agonists (tirzepatide, etc.), any dual or triple agonist containing GLP-1R and/or GCGR components (including mazdutide), or any GLP-1 class investigational drug in clinical development.
Use of any prescription weight-loss medication within 3 months prior to screening (regardless of duration), including orlistat, naltrexone/bupropion combination, phentermine/topiramate combination, or any weight-loss drug approved in China or in clinical development. Over-the-counter dietary supplements are not excluded but must be recorded.
Spontaneous body weight change ≥10% within 3 months prior to screening (based on self-report and/or available medical records), or currently participating in any organized weight-loss program (including commercial weight-loss plans or weight-loss interventions in other clinical trials).
Prior bariatric or metabolic surgery including Roux-en-Y gastric bypass, sleeve gastrectomy, adjustable gastric banding, biliopancreatic diversion, intragastric balloon placement, or other bariatric surgery.
Prior history of acute pancreatitis (confirmed by imaging or surgery) or chronic pancreatitis; or serum amylase >3× ULN or serum lipase >3× ULN at screening.
Personal history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia type 2 (MEN2); first-degree family history of MTC or MEN2; or serum calcitonin ≥50 ng/L at screening.
Any of the following within 6 months prior to screening: acute myocardial infarction (STEMI or NSTEMI), ischemic or hemorrhagic stroke, transient ischemic attack (TIA), coronary revascularization (PCI or CABG), or hospitalization for unstable angina.
NYHA Class III or IV heart failure. (NYHA Class I and II are not grounds for exclusion.)
Clinically significant arrhythmia on 12-lead ECG at screening, including:
Mobitz Type II or third-degree atrioventricular block, sustained ventricular tachycardia (≥30 seconds or requiring cardioversion), QTcF >500 ms, or resting heart rate <50 bpm (in subjects not using beta-blockers or calcium channel blockers).
Uncontrolled hypertension: confirmed mean systolic blood pressure ≥180 mmHg and/or mean diastolic blood pressure ≥110 mmHg on repeated measurements at screening despite antihypertensive therapy. Subjects with controlled blood pressure on a stable antihypertensive regimen (stable for ≥4 weeks prior to screening) are allowed to enroll.
ALT >3× ULN, AST >3× ULN, or total bilirubin >2× ULN at screening (except confirmed Gilbert's syndrome with normal direct bilirubin).
eGFR (CKD-EPI) <45 mL/min/1.73 m² at screening. Subjects with eGFR 45-60 mL/min/1.73 m² may enroll with enhanced renal function monitoring.
Any of the following gastrointestinal conditions: known gastroparesis (confirmed by gastric emptying study or clinical diagnosis), inflammatory bowel disease (Crohn's disease or ulcerative colitis, active or remission), short bowel syndrome, prior gastrointestinal surgery likely to affect drug absorption (excluding simple appendectomy and laparoscopic cholecystectomy), or other serious gastrointestinal disease likely to significantly affect drug tolerability or absorption.
Diagnosis or active treatment of any malignancy within 5 years prior to screening.
Positive urine pregnancy test at screening, currently breastfeeding, or planning pregnancy during the 48-week study period.
Known allergy to mazdutide or any excipient in its formulation; or prior serious allergic reaction to any GLP-1 class drug (defined as angioedema, anaphylactic shock, or allergic reaction requiring hospitalization).
Participation in any other interventional clinical trial within 3 months prior to screening (excluding purely observational or epidemiological studies not involving investigational drugs or devices), or currently enrolled in any other clinical trial.
Currently on long-term systemic corticosteroids (expected continuous use >14 days, oral or intravenous); or currently using drugs known to significantly affect body weight or glucose metabolism that cannot be discontinued or substituted, including antipsychotics (olanzapine, clozapine, quetiapine, etc.), valproate sodium, or lithium.
History of alcohol abuse within 1 year prior to screening, defined as daily consumption >3 standard drink units (men) or >2 standard drink units (women) sustained for >3 months (1 standard drink unit ≈ 10g pure alcohol).
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Jiajun Zhao, MD, PhD | Contact | 0531-68776025 | jjzhao@sdu.edu.cn | |
| Xiude Fan, MD, PhD | Contact | +8613186067538 | fanxiudexjtu@163.com |
| Name | Affiliation | Role |
|---|---|---|
| Jiajun Zhao, MD, PhD | Shandong Provincial Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Shandong Provincial Hospital Affiliated to Shandong First Medical University | Jinan | Shandong | 250021 | China |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 33567185 | Background | Wilding JPH, Batterham RL, Calanna S, Davies M, Van Gaal LF, Lingvay I, McGowan BM, Rosenstock J, Tran MTD, Wadden TA, Wharton S, Yokote K, Zeuthen N, Kushner RF; STEP 1 Study Group. Once-Weekly Semaglutide in Adults with Overweight or Obesity. N Engl J Med. 2021 Mar 18;384(11):989-1002. doi: 10.1056/NEJMoa2032183. Epub 2021 Feb 10. | |
| 38907683 |
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Individual participant data will not be shared publicly. This study is an investigator-initiated trial conducted in China. Participant data are subject to Chinese Personal Information Protection Law (PIPL) and cannot be transferred or disclosed to third parties without regulatory authorization. Aggregated summary data and statistical analysis code may be made available upon reasonable request to the corresponding author.
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|
| Placebo | Drug | Matching placebo for mazdutide, administered by subcutaneous injection once weekly using a pre-filled pen device identical in appearance, color, volume, and packaging to the active drug pen. Titration schedule mirrors the 6 mg mazdutide arm to maintain blinding. |
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| Standardized Lifestyle Intervention | Behavioral | Structured dietary modification with an energy deficit of 500-750 kcal/day and moderate-intensity aerobic exercise of at least 150 minutes per week, maintained throughout the 48-week study period. Applied equally to all three arms. |
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| Week 24 and Week 48 |
| IFG Remission Rate (FPG <6.1 mmol/L) | Week 24 and Week 48 |
| IGT Remission Rate (OGTT 2h-PG <7.8 mmol/L) | Week 24 and Week 48 |
| HbA1c Normalization Rate (HbA1c <5.7%) | Week 24 and Week 48 |
| Proportion of Participants Maintaining Normal Glucose Regulation (NGR) at Week 48 | Assessed 24 weeks after treatment discontinuation to evaluate durability of glycemic response. | Week 48 |
| Cumulative Incidence of Progression to Type 2 Diabetes | Up to 48 weeks |
| Proportion of Week-24 NGR Responders Maintaining NGR at Week 48 | Among participants who achieved NGR at Week 24, the proportion who simultaneously meet all three NGR criteria (HbA1c <5.7%, fasting plasma glucose <6.1 mmol/L, and OGTT 2-hour plasma glucose <7.8 mmol/L) at Week 48, assessed by central laboratory. | Week 48 |
| Percent Change from Baseline in Body Weight | Week 24 and Week 48 |
| Change from Baseline in Waist Circumference | Week 24 and Week 48 |
| Proportion Achieving ≥5% Body Weight Reduction | Week 24 and Week 48 |
| Proportion Achieving ≥10% Body Weight Reduction | Week 24 and Week 48 |
| Change from Baseline in Disposition Index (DI) | Week 24 and Week 48 |
| Change from Baseline in Insulinogenic Index (IGI30) | Week 24 and Week 48 |
| Change from Baseline in Matsuda Insulin Sensitivity Index | Week 24 and Week 48 |
| Change from Baseline in HOMA-IR | Week 24 and Week 48 |
| Change from Baseline in HOMA-β | Week 24 and Week 48 |
| Change from Baseline in OGTT Glucose AUC0-120 | Week 24 and Week 48 |
| Change from Baseline in OGTT Insulin AUC0-120 | Week 24 and Week 48 |
| Change from Baseline in Liver Fat Content by FibroScan CAP | Week 24 and Week 48 |
| Fatty Liver Resolution Rate (CAP from ≥248 to <248 dB/m) | Week 24 and Week 48 |
| Change from Baseline in ALT, AST, and GGT | Week 24 and Week 48 |
| ALT Normalization Rate | Week 24 and Week 48 |
| Change from Baseline in Fatty Liver Index (FLI) | Week 24 and Week 48 |
| Change from Baseline in Lipid Panel (TG, TC, LDL-C, HDL-C, non-HDL-C) | Week 24 and Week 48 |
| Change from Baseline in Systolic and Diastolic Blood Pressure | Week 24 and Week 48 |
| Change from Baseline in Serum Uric Acid | Week 24 and Week 48 |
| Change in Prevalence of Metabolic Syndrome | Week 24 and Week 48 |
| Week 24 and Week 48 |
| NGR Rate at Week 24 by Baseline Prediabetes Type (IFG Only, IGT Only, IFG+IGT, or Elevated HbA1c Only) | Proportion of participants achieving NGR at Week 24 in pre-specified subgroups defined by baseline prediabetes type: (1) IFG only (FPG ≥6.1 and <7.0 mmol/L with OGTT 2h-PG <7.8 mmol/L); (2) IGT only (OGTT 2h-PG ≥7.8 and <11.1 mmol/L with FPG <6.1 mmol/L); (3) IFG+IGT combined (both criteria simultaneously met); (4) elevated HbA1c only (HbA1c 5.7-6.4% with FPG <6.1 mmol/L and OGTT 2h-PG <7.8 mmol/L). Treatment effect estimated within each subgroup with interaction p-value reported. | Week 24 and Week 48 |
| NGR Rate at Week 24 by Baseline BMI Subgroup (<28 vs ≥28 kg/m²) | Proportion of participants achieving NGR at Week 24 in pre-specified subgroups defined by baseline BMI (<28 vs ≥28 kg/m²). Treatment effect estimated within each subgroup with interaction p-value reported. | Week 24 and Week 48 |
| Change from Baseline in Serum Proteomics and Metabolomics | Exploratory analysis of changes from baseline in serum proteomics and metabolomics at Week 24 and Week 48. Reported as number of significantly altered proteins/metabolites and enriched biological pathways. | Week 24 and Week 48 |
| Proportion of Participants Maintaining NGR at Week 72 and Week 96 | Week 72 and Week 96 |
| Long-term Changes in Glycemic Parameters, Body Weight, Liver Fat Content, Disposition Index, and Cumulative Incidence of T2D from Baseline to Week 96 | In participants completing extended long-term follow-up, the following outcomes are assessed at Week 72 and Week 96:
Continuous outcomes assessed by MMRM; categorical outcomes by NRI. Results reported per treatment arm with 95% CI. | Week 72 and Week 96 |
| Kahn SE, Deanfield JE, Jeppesen OK, Emerson SS, Boesgaard TW, Colhoun HM, Kushner RF, Lingvay I, Burguera B, Gajos G, Horn DB, Hramiak IM, Jastreboff AM, Kokkinos A, Maeng M, Matos ALSA, Tinahones FJ, Lincoff AM, Ryan DH; SELECT Trial Investigators. Effect of Semaglutide on Regression and Progression of Glycemia in People With Overweight or Obesity but Without Diabetes in the SELECT Trial. Diabetes Care. 2024 Aug 1;47(8):1350-1359. doi: 10.2337/dc24-0491. |
| 26132939 | Background | Pi-Sunyer X, Astrup A, Fujioka K, Greenway F, Halpern A, Krempf M, Lau DC, le Roux CW, Violante Ortiz R, Jensen CB, Wilding JP; SCALE Obesity and Prediabetes NN8022-1839 Study Group. A Randomized, Controlled Trial of 3.0 mg of Liraglutide in Weight Management. N Engl J Med. 2015 Jul 2;373(1):11-22. doi: 10.1056/NEJMoa1411892. |
| 41407860 | Background | Guo L, Zhang B, Xue X, Zhang X, Cai H, Jiang H, Zhang L, Jin P, Wang X, Cheng Z, Zhang S, Geng J, Guo Y, Hu H, Ma Q, Li L, Du H, Han-Zhang H, Xue F, Deng H, Qian L, Yang W; DREAMS-2 investigators. Mazdutide versus dulaglutide in Chinese adults with type 2 diabetes. Nature. 2026 Apr;652(8108):181-188. doi: 10.1038/s41586-025-10031-z. Epub 2025 Dec 17. |
| 41407859 | Background | Zhu D, Zhao J, Cai H, Chu X, Xiu S, Song C, Cheng Z, Cao H, Jiang H, Zhang L, Wang H, Shi B, Li Y, Liu M, Feng B, Xue F, Deng H, Li H, Li L, Li Y, Ma Q, Qian L. Mazdutide versus placebo in Chinese adults with type 2 diabetes. Nature. 2026 Apr;652(8108):174-180. doi: 10.1038/s41586-025-10026-w. Epub 2025 Dec 17. |
| 28655017 | Background | Wang L, Gao P, Zhang M, Huang Z, Zhang D, Deng Q, Li Y, Zhao Z, Qin X, Jin D, Zhou M, Tang X, Hu Y, Wang L. Prevalence and Ethnic Pattern of Diabetes and Prediabetes in China in 2013. JAMA. 2017 Jun 27;317(24):2515-2523. doi: 10.1001/jama.2017.7596. |
| 31036503 | Background | Gong Q, Zhang P, Wang J, Ma J, An Y, Chen Y, Zhang B, Feng X, Li H, Chen X, Cheng YJ, Gregg EW, Hu Y, Bennett PH, Li G; Da Qing Diabetes Prevention Study Group. Morbidity and mortality after lifestyle intervention for people with impaired glucose tolerance: 30-year results of the Da Qing Diabetes Prevention Outcome Study. Lancet Diabetes Endocrinol. 2019 Jun;7(6):452-461. doi: 10.1016/S2213-8587(19)30093-2. Epub 2019 Apr 26. |
| 38092790 | Background | Ji L, Jiang H, Cheng Z, Qiu W, Liao L, Zhang Y, Li X, Pang S, Zhang L, Chen L, Yang T, Li Y, Qu S, Wen J, Gu J, Deng H, Wang Y, Li L, Han-Zhang H, Ma Q, Qian L. A phase 2 randomised controlled trial of mazdutide in Chinese overweight adults or adults with obesity. Nat Commun. 2023 Dec 14;14(1):8289. doi: 10.1038/s41467-023-44067-4. |
| 37943529 | Background | Zhang B, Cheng Z, Chen J, Zhang X, Liu D, Jiang H, Ma G, Wang X, Gan S, Sun J, Jin P, Yi J, Shi B, Ma J, Ye S, Wang G, Ji L, Gu X, Yu T, An P, Deng H, Li H, Li L, Ma Q, Qian L, Yang W. Efficacy and Safety of Mazdutide in Chinese Patients With Type 2 Diabetes: A Randomized, Double-Blind, Placebo-Controlled Phase 2 Trial. Diabetes Care. 2024 Jan 1;47(1):160-168. doi: 10.2337/dc23-1287. |
| ID | Term |
|---|---|
| D011236 | Prediabetic State |
| D018149 | Glucose Intolerance |
| D007333 | Insulin Resistance |
| D015431 | Weight Loss |
| ID | Term |
|---|---|
| D003920 | Diabetes Mellitus |
| D044882 | Glucose Metabolism Disorders |
| D008659 | Metabolic Diseases |
| D009750 | Nutritional and Metabolic Diseases |
| D004700 | Endocrine System Diseases |
| D006943 | Hyperglycemia |
| D006946 | Hyperinsulinism |
| D001836 | Body Weight Changes |
| D001835 | Body Weight |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
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| ID | Term |
|---|---|
| C000719829 | mazdutide |
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