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Evaluate the Efficacy and Safety of MT921 in Subjects With Moderate to Severe Submental Fat

A Randomized, Double-blind, Placebo-controlled, Multi-center, Phase III Study to Evaluate the Efficacy and Safety of MT921 in Subjects With Moderate to Severe Submental Fat

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05195112
Enrollment
240
Registered
2022-01-18
Start date
2021-12-24
Completion date
2023-02-18
Last updated
2023-02-23

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

Conditions

Submental Fat

Brief summary

The purpose of this study is to evaluate the Efficacy and Safety of MT921 in Subjects with Moderate to Severe Submental fat compared with Placebo.

Interventions

DRUGMT921

Active ingredient

DRUGPlacebo

Normal Saline

Sponsors

Medy-Tox
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
19 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

1. Adults 19\ 65 years of age 2. CA-SMFRS and PA-SMFRS score of 2 or 3 3. Satisfaction level is 3points or less 4. Voluntarily provide informed consent

Exclusion criteria

1. Following history that can affect the efficacy and safety evaluation in the chin or neck area as judged by the investigator * Scars or skin lesion on the study treatment region * Liposuction or lipolytic material treatment to decrease submental fat * Permanent filler, synthetic implantation and autologous fat grafting * Within 1 year of screening visit, semi-permanent filler (Calcium Hydroxyapatite, collagen-stimulator, etc.), radio-frequency treatment, HIFU, thread, laser procedure and chemical peeling procedure over medium-depth * Within 6 months of screening visit, temporary filler (Hyaluronic acid, etc.) procedure on the chin or neck, injection of botulinum toxin, radio-frequency treatment, HIFU, thread, laser procedure and chemical peeling procedure over medium-depth 2. BMI over 35.0 kg/m\^2 3. Submandibular enlargement due to causes other than localized subcutaneous fat (hyperthyroidism, cervical lymphadenopathy, etc.) 4. Current or past dysphagia 5. Judged difficult to measure submandibular fat due to sagging skin on the chin and neck or wide platysmal bands on the neck 6. Bleeding or taking anticoagulant drugs (except for patients taking anticoagulant drugs, those who can discontinue administration from 3 days before injection to 24 hours after injection of the IP) 7. Skin disease or would infection on the study treatment region 8. Hypersensitivity to Lidocaine, Benzocaine, Procaine or the IP 9. Pregnancy or breast feeding or female of child-bearing potential who has not agreed to use of medically acceptable contraception during the study period * All women of childbearing age have negative pregnancy test results can be enrolled in parallel with surgical sterilization (hysterectomy, bilateral tubal ligation or bilateral oophorectomy) or menopause (amenorrhea for more than 12 months). * Medically acceptable contraception: Intrauterine device, Intrauterine system, vasectomy, tubal ligation, condom, Cervical cap, Contraceptive diaphragm, contraceptive sponges, spermicide, oral contraceptive pill and etc. 10. Experience of other clinical trials within 30 days before screening 11. Any other clinically meaningful conditions that are considered ineligible for the study in the medical judgement of principal investigator or sub-investigator

Design outcomes

Primary

MeasureTime frameDescription
Proportion of subjects whose PA-SMFIS (Patient Assessed-Submental Fat Impact Scale) score changed12 weeksProportion of subjects whose PA-MFRS decreased 1, 2 points or more compared the 12 weeks after the last administration day to before administration of the IP , Minimum value: 0 (worst outcome) / Maximum value: 10 (best outcome)
Proportion of subjects whose CA-SMFRS (Clinician-Assessed Submental Fat Rating Scale) score changed12 weeksProportion of subjects whose CA-SMFRS decreased 1, 2 points or more compared the 12 weeks after the last administration day to before administration of the IP, Minimum value: 0 (best outcome) / Maximum value: 4 (worst outcome)

Secondary

MeasureTime frameDescription
Proportion of subjects whose PA-SMFIS (Patient Assessed-Submental Fat Impact Scale) score changed4 weeksProportion of subjects whose PA-MFRS decreased 1, 2 points or more compared the 4 weeks after the last administration day to before administration of the IP , Minimum value: 0 (worst outcome) / Maximum value: 10 (best outcome)
PA-SMFIS (Patient Assessed-Submental Fat Impact Scale)4 and 12 weeksChange PA-SMFIS (Patient Assessed-Submental Fat Impact Scale) score compared 4 to 12 weeks after the last administration of the IP, Minimum value: 0 (worst outcome) / Maximum value: 10 (best outcome)
Satisfaction Evaluation by the subject4 and 12 weeksA score of 5 (slightly satisfied) or higher in the subject satisfaction evaluation at 4 and 12 weeks after the last administration to before administration of the IP
Measuring submental fat volume by MRI (magnetic resonance imaging)12 weeksConfirmation the volume of submental fat compared the 12 weeks after the last administration to before administration of the IP measured by MRI (Number of Participants: approximately 120)
Proportion of subjects whose CA-SMFRS (Clinician-Assessed Submental Fat Rating Scale) score changed4 weeksProportion of subjects whose CA-SMFRS decreased 1, 2 points or more compared the 4 weeks after the last administration day to before administration of the IP, Minimum value: 0 (best outcome) / Maximum value: 4 (worst outcome)

Other

MeasureTime frameDescription
Caliper4 and 12 weeksPercentage of change in submental fat thickness as measured by Caliper

Countries

South Korea

Outcome results

None listed

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