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Efficacy and Safety of ALT-801 in the Treatment of Obesity

A Phase 2, Multicenter, Randomized, Double-blind, Placebo-controlled and Parallel Group 48-Week Study to Evaluate the Efficacy and Safety of ALT-801 in the Treatment of Obesity (MOMENTUM Trial)

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05295875
Enrollment
391
Registered
2022-03-25
Start date
2022-03-31
Completion date
2023-09-28
Last updated
2023-11-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Obesity/Overweight

Brief summary

This study will evaluate the efficacy and safety of ALT-801 once-weekly versus placebo as an adjunct to a reduced-calorie diet and increased physical activity in patients with obesity/overweight.

Interventions

Injected subcutaneously (SC)

OTHERPlacebo

Injected subcutaneously (SC)

Sponsors

Altimmune, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Written informed consent signed prior to entry into the study * Male or female age 18 to 75 years, inclusive * Body mass index (BMI) ≥ 30 kg/m2 or BMI ≥ 27 kg/m2 combined with at least one obesity-related comorbidity * At least one unsuccessful weight loss attempt per investigator judgement * Agreement to comply with the study-required life-style intervention and treatment during the full duration of the study * Female subjects of childbearing potential who are not pregnant or breastfeeding, do not plan to become pregnant during the study, and agree to use effective birth control

Exclusion criteria

* Weight gain or loss \> 5% in the 3 months prior to randomization or \>10% in the 6 months prior to screening * Diabetes and related conditions: 1. History or clinical evidence of diabetes mellitus of any type, including Type 1, Type 2, or mature onset diabetes of the young (MODY) 2. HbA1c \> 6.5%, fasting glucose ≥ 126 mg/dL (6.9 mmol/L), and/or random glucose of ≥ 200 mg/dL (11.0mmol/L) at screening * Obesity and related conditions: 1. Obesity induced by known genetic causes or endocrine disorders (eg, Cushing Syndrome, inadequately treated hypothyroidism, defined as thyroid-stimulating hormone \[TSH\] \> 6 mIU/L) 2. History of bariatric surgery or other surgical treatment for obesity (eg, gastric banding, gastric bypass), or planned surgery or surgical treatment during the study. Liposuction and/or abdominoplasty performed \>1 year before screening is allowed. Endoscopically placed intragastric balloons will be allowed if removed \> 1 year before screening. * Gastrointestinal conditions: 1. History of acute or chronic pancreatitis within 1 year (365 days) before screening 2. History of or acute significant gastrointestinal (GI) disorder (eg, peptic ulcers, severe gastroesophageal reflux disease \[GERD\], 3. History of GI surgery, including cholecystectomy and antrectomy. Surgery for appendicitis and small bowel resection \>20cm is acceptable. 4. History of inflammatory bowel disease, celiac disease or any medical condition or surgery that could affect gastric emptying, stool frequency or stool consistency. (Irritable bowel syndrome is permitted provided that bowel frequency and consistency are normal off treatment.) * Mental health conditions: 1. Untreated depressive disorder, defined as a Patient Health Questionaire-9 (PHQ-9) score of ≥ 15 at screening 2. Suicide ideation, defined as type 4 or 5 on the Columbia-Suicide Severity Rating Scale(C-SSRS) at screening, lifelong history of a suicide attempt, or suicidal behavior within 30 days before screening 3. Other severe psychiatric disorder (eg, schizophrenia, bipolar disorder)

Design outcomes

Primary

MeasureTime frame
Relative change from baseline in body weight percentageBaseline to Week 48

Secondary

MeasureTime frame
Change from baseline in lipidsBaseline to Week 48
The Number of Participants with One or More Treatment-Emergent Adverse Events (TEAEs)Baseline to Week 48
Changes from baseline in Fasting GlucoseBaseline to Week 48
Percent proportion of subjects with weight loss of greater than or equal to 5%, 10%, and 15%Baseline to Week 48
Changes from baseline in Homeostatic Marker Assessment for Insulin Resistance (HOMA-IR)Baseline to Week 48
Changes from baseline in: a) Systolic blood pressure, b) Diastolic blood pressureBaseline to Week 48
Change from baseline in proportion of patients using antihypertensive medicationsBaseline to Week 48
Changes from baseline in Hemoglobin A1cBaseline to Week 48

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026