- ICH GCP
- Registr klinických studií v USA
- Klinická studie NCT07646886
Botulinum Toxin Type A Injection Sites for Oral Commissure Ptosis
Injection Site-Based Multicenter Randomized Controlled Trial: Efficacy and Safety of Focal Botulinum Toxin Type A Injection for Oral Commissure Ptosis
Přehled studie
Postavení
Detailní popis
Oral commissure ptosis is a common aesthetic concern that presents as abnormal downward displacement of the mouth corners at rest, leading to a sad, angry or aged appearance. Botulinum toxin type A (BTX-A) injection is the first-line treatment, but there is no consensus on the optimal injection site in the depressor anguli oris (DAO) muscle.
This multicenter randomized controlled trial will enroll 266 subjects with oral commissure ptosis from 5 top Chinese stomatological hospitals. Subjects will be randomly assigned 1:1 to receive either upper DAO or lower DAO BTX-A injection. The primary endpoint is the improvement of oral commissure ptosis angle at 1 month post-treatment. Secondary endpoints include objective efficacy measures, subjective aesthetic evaluations, and safety profiles during a 6-month follow-up.
This study aims to determine the optimal injection site for Chinese population, establish standardized operation specifications, and provide level I evidence for clinical practice.
Typ studie
Zápis (Odhadovaný)
Fáze
- Fáze 4
Kontakty a umístění
Studijní kontakt
- Jméno: Xi Gong, D.D.S
- Telefonní číslo: +86 15201304426
- E-mail: 15201304426@163.com
Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
- Dospělý
Přijímá zdravé dobrovolníky
Popis
Inclusion Criteria:
- Aged 18 to 60 years, any gender
- Meet the diagnostic criteria for oral commissure ptosis: bilateral oral commissure ptosis angle (angle between the oral commissure point and the horizontal line of the ipsilateral vermilion border) > 1° at rest
- Have clear aesthetic demand for oral commissure ptosis improvement and can complete full-cycle follow-up
- No redness, swelling, ulcer, scar, deformity or active infection in the perioral and mental regions
- Have not participated in other interventional clinical trials within 3 months before enrollment
Exclusion Criteria:
- Hypersensitivity to botulinum toxin type A, lidocaine or excipients of injection preparations; or contraindications to botulinum toxin injection (myasthenia gravis, Lambert-Eaton syndrome, motor neuron disease, severe liver and kidney dysfunction, coagulation disorders, uncontrolled autoimmune diseases, malignant tumors)
- History of mid-lower facial botulinum toxin type A injection, soft tissue filling, laser/radiofrequency rejuvenation, perioral surgery or orthognathic treatment within 6 months before enrollment
- Planned perioral treatment within 6 months after enrollment that may affect efficacy evaluation
- Pregnant or lactating women, or those planning to become pregnant within 6 months
- Acquired oral commissure ptosis caused by facial nerve palsy/sequelae, perioral scar traction, severe jaw deformity or severe alveolar bone resorption
- Severe facial asymmetry (difference in bilateral oral commissure ptosis angle > 2°)
- History of botulinum toxin allergy or severe adverse reactions after previous botulinum toxin injection
- Currently using aminoglycoside antibiotics, quinine, calcium channel blockers, anticoagulants or other drugs that may affect botulinum toxin efficacy or increase bleeding risk and cannot discontinue
- History of mental illness, drug/alcohol abuse, or poor compliance unable to complete follow-up
- Other conditions deemed unsuitable for enrollment by the investigator
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Léčba
- Přidělení: Randomizované
- Intervenční model: Paralelní přiřazení
- Maskování: Singl
Zbraně a zásahy
Skupina účastníků / Arm |
Intervence / Léčba |
|---|---|
|
Experimentální: Upper Depressor Anguli Oris Injection
Single subcutaneous injection of OnabotulinumtoxinA (Botox®, Allergan, USA) into the upper half of the depressor anguli oris (DAO) muscle.
|
Single subcutaneous injection of onabotulinumtoxinA into the upper half of the depressor anguli oris muscle, total dose 6U bilaterally.
Ostatní jména:
|
|
Aktivní komparátor: Lower Depressor Anguli Oris Injection
Single subcutaneous injection of OnabotulinumtoxinA (Botox®, Allergan, USA) into the lower half of the depressor anguli oris (DAO) muscle.
|
Single subcutaneous injection of onabotulinumtoxinA into the lower half of the depressor anguli oris muscle, total dose 6U bilaterally.
Ostatní jména:
|
Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Improvement of Bilateral Oral Commissure Ptosis Angle from Baseline at 1 Month Post-Treatment
Časové okno: 30±3 days after treatment
|
The primary endpoint is the change in bilateral oral commissure ptosis angle (∠oba) from baseline.
The angle is measured on standardized frontal facial photographs at rest by 3 independent assessors who are completely blinded to group assignment.
The average value of 3 measurements is used as the final result.
|
30±3 days after treatment
|
Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Improvement of Oral Commissure Ptosis Angle at Maximum Smile and Maximum Depression Position
Časové okno: 1, 3, 6 months after treatment
|
Change in oral commissure ptosis angle from baseline measured at maximum smile without teeth exposure and maximum oral commissure depression position on standardized facial photographs.
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1, 3, 6 months after treatment
|
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Vertical Elevation Amplitude of the Oral Commissure
Časové okno: 1, 3, 6 months after treatment
|
Change in the vertical distance from the oral commissure point to the ipsilateral pupil from baseline, measured on standardized frontal facial photographs.
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1, 3, 6 months after treatment
|
|
Merz Facial Aesthetic Scale Score
Časové okno: 1, 3, 6 months after treatment
|
Physician-assessed aesthetic improvement using the full Merz Facial Aesthetic Scale.
Scale range: 0 (No aging) to 4 (Severe aging).
Lower scores indicate better aesthetic outcome.
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1, 3, 6 months after treatment
|
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Global Aesthetic Improvement Scale (GAIS)
Časové okno: 1, 3, 6 months after treatment
|
Patient-reported global aesthetic improvement using the full Global Aesthetic Improvement Scale (GAIS).
Scale range: 1 (Much worse) to 5 (Much improved).
Higher scores indicate better aesthetic outcome.
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1, 3, 6 months after treatment
|
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Patient Satisfaction Score (FACE-Q)
Časové okno: 1, 3, 6 months after treatment
|
Patient-reported facial appearance satisfaction using the full FACE-Q Facial Appearance Module.
Scale range: 0 (Worst possible appearance) to 100 (Best possible appearance).
Higher scores indicate better outcome.
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1, 3, 6 months after treatment
|
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Incidence of Adverse Events (AEs)
Časové okno: From enrollment to 6 months after treatment
|
Incidence, time of onset, clinical manifestation, severity, treatment measures and outcome of all adverse events during the study period.
Severity is graded according to CTCAE 5.0.
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From enrollment to 6 months after treatment
|
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Incidence of Toxin Diffusion-Related Adverse Events
Časové okno: From enrollment to 6 months after treatment
|
Incidence of adverse events related to unintended botulinum toxin diffusion, including oral commissure asymmetry, lower lip movement disorder, salivation, dysarthria and abnormal smile.
|
From enrollment to 6 months after treatment
|
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Incidence of Serious Adverse Events (SAEs)
Časové okno: From enrollment to 6 months after treatment
|
Incidence of serious adverse events that result in death, life-threatening condition, hospitalization, persistent or significant disability, or congenital anomaly/birth defect.
|
From enrollment to 6 months after treatment
|
|
Patient Satisfaction Score (Visual Analog Scale, VAS)
Časové okno: 1, 3, 6 months after treatment
|
Patient satisfaction measured by the 10-point Visual Analog Scale (VAS).
Scale range: 0 (Completely dissatisfied) to 10 (Completely satisfied).
Higher scores indicate higher satisfaction.
|
1, 3, 6 months after treatment
|
Spolupracovníci a vyšetřovatelé
Sponzor
Vyšetřovatelé
- Vrchní vyšetřovatel: Xi Gong, D.D.S, Peking University School and Hospital of Stomatology
- Vrchní vyšetřovatel: Minjie Chen, D.D.S, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
- Vrchní vyšetřovatel: Jian Li, D.D.S, Wuhan University School of Stomatology
- Vrchní vyšetřovatel: Yunpeng Li, D.D.S, School of Stomatology, Air Force Medical University
- Vrchní vyšetřovatel: Sien Zhang, D.D.S, Guanghua School of Stomatology, Sun Yat-sen University
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia (Odhadovaný)
Primární dokončení (Odhadovaný)
Dokončení studie (Odhadovaný)
Termíny zápisu do studia
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Aktuální)
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Aktuální)
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Více informací
Termíny související s touto studií
Klíčová slova
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