# Botulinum Toxin Type A Injection Sites for Oral Commissure Ptosis

> **NCT07646886** · PHASE4 · NOT_YET_RECRUITING · sponsor: **Peking University** · enrollment: 266 (estimated)

## Conditions studied

- Facial Aging
- Melomental Folds
- Oral Commissure Ptosis

## Interventions

- **DRUG:** OnabotulinumtoxinA (Upper Depressor Anguli Oris Injection)
- **DRUG:** OnabotulinumtoxinA (Lower Depressor Anguli Oris Injection)

## Key facts

- **NCT ID:** NCT07646886
- **Lead sponsor:** Peking University
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** NOT_YET_RECRUITING
- **Start date:** 2026-07-01
- **Primary completion:** 2027-06-01
- **Final completion:** 2027-12-01
- **Target enrollment:** 266 (ESTIMATED)
- **Last updated:** 2026-07-07


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT07646886

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT07646886, "Botulinum Toxin Type A Injection Sites for Oral Commissure Ptosis". Retrieved via MORVS 2026-10-21 from https://api.morvs.ai/clinical/NCT07646886. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*