Treatment for "Asymmetric Crying Facies"
A Randomized, Double-Blind, Controlled Study Evaluating the Efficacy of Botulinum Toxin Type A (Hengli) Injection for LowerLip Asymmetry in Children With Craniofacial Microsomia
This study focuses on children with hemifacial microsomia (HFM), a common congenital craniofacial deformity caused by abnormal development of the first and second branchial arches. Up to 45% of children with HFM have facial nerve dysplasia, most frequently involving the mandibular marginal branch. These children present with asymmetric lower-lip movement called "crooked-mouth smile" during smiling, speaking or crying. Unlike asymmetric crying syndrome, this condition does not resolve spontaneously and may gradually get worse.
"Crooked-mouth smile" results from muscle weakness of the lower lip on the affected side, leading to dynamic perioral muscle imbalance. Static treatment includes botulinum toxin injection, muscle resection, nerve cutting and fascia suspension; dynamic treatment includes muscle transfer procedures. Early intervention is important for children's psychological well-being. Botulinum toxin injection is minimally invasive, safe and reversible, and is regarded as a preferred initial therapy. However, prospective clinical evidence regarding its efficacy, safety and appropriate dosage in this pediatric population remains insufficient. This prospective study aims to explore the safety, effectiveness and optimal dose of botulinum toxin injection for treating "crooked-mouth smile" in children with HFM and mandibular marginal branch dysplasia.
調査の概要
研究の種類
入学 (推定)
段階
- 適用できない
連絡先と場所
研究連絡先
- 名前：Xiaoshuang Guo, M.D.
- 電話番号：+86 13121234163
- メール：gxsinjnu@126.com
研究場所
-
-
-
Beijing、中国
- 募集
- Plastic Surgery Hospital & Chinese Academy Of Medical Sciences
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コンタクト：
- Xiaoshuang Guo, M.D.
- 電話番号：86-13121234163
- メール：gxsinjnu@126.com
-
主任研究者：
- Xiaoshuang Guo, M.D.
-
-
参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Children under 18 years old diagnosed with hemifacial microsomia (HFM) and lower-lip asymmetry, with congenital injury of the marginal mandibular branch of the facial nerve, presenting with lower-lip movement disorder and lower-lip asymmetry during smiling and teeth-baring.
- Subjects who are able to comply with study protocols and visit schedules.
- Subjects whose guardians provide voluntary written informed consent.
Exclusion Criteria:
-
Any disease affecting neuromuscular function, including but not limited to neuromuscular junction disorders such as myasthenia gravis and Lambert-Eaton syndrome, peripheral motor nerve diseases such as amyotrophic lateral sclerosis, or a past medical history of the above-mentioned diseases.
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Receiving treatment with any of the following medications:
- Within 4 weeks prior to screening: muscle relaxants (tubocurarine chloride, dantrolene sodium, baclofen, etc.), aminoglycosides, polypeptide antibiotics, spectinomycin hydrochloride, tetracyclines, lincomycin, anticholinergic agents (butylscopolamine bromide, trihexyphenidyl hydrochloride, etc.), benzodiazepines, and other drugs that may inhibit neuromuscular transmission or interfere with the effect of botulinum toxin.
- Anticoagulants or anti-platelet agents used within 7 days before study drug administration.
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Cutaneous abnormalities at the treatment site, including local infection (e.g., herpes simplex, acne, erysipelas), scars, hypertrophic scars, or keloid predisposition.
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Prior perioral treatment within 1-year interval before this study.
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History of hypersensitivity; known allergy to any component of the investigational or comparator product, or known sensitivity to complex protein components (including botulinum toxin type A, human albumin, gelatin protein, lactose, sodium chloride, or sodium succinate).
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Presence of other comorbidities that render the subject inappropriate for enrollment at the investigator's discretion. Eligibility shall be determined by the investigator.
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Participation in another clinical trial (drug or device-related) at the time of screening, or participation in any other clinical trial within 30 days before screening.
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Subjects unable to communicate or incapable of following study instructions.
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Staff members of the study department or sponsor.
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Subjects considered unsuitable for participation in this study by the investigator.
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：処理
- 割り当て：ランダム化
- 介入モデル：並列代入
- マスキング：ダブル
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
実験的：Intervention Group
Participants receive botulinum toxin injection immediately after enrollment for correction of crooke |
Injection targets the "depressor labii inferioris" and "depressor anguli oris" for correction of crooked-mouth smile. |
|
アクティブコンパレータ：Control Group (Delayed Treatment)
articipants do not receive botulinum toxin injection at baseline. After completing 6-month follow-up assessment for primary outcomes, subjects in this group will receive botulinum toxin injection. |
Injection targets the "depressor labii inferioris" and "depressor anguli oris" for correction of crooked-mouth smile. |
この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
mouth asymmetry
時間枠：1、3、6 months
|
A coordinate system is established based on the palpebral fissure and nasion. The sagittal distance differences at the hemilabial midpoint and oral commissure point are evaluated under static, broad-smile, and teeth-baring conditions in children |
1、3、6 months
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
satisfaction with lips
時間枠：1、3、6 months
|
Face-Q: satisfaction with lips. FACE-Q Aesthetics: Satisfaction with Lips scale. Patient-reported satisfaction with lip appearance. Rasch-transformed scores range from 0 to 100; higher scores indicate greater satisfaction (better outcome). |
1、3、6 months
|
|
Terzis aesthetic and functional grading system for the depressor muscle
時間枠：1、3、6 months
|
Investigator-assessed depressor muscle aesthetic and functional performance using the Terzis aesthetic and functional grading system for the depressor muscle. Scores range from 0 (Poor, total paralysis) to 2 (Excellent, normal symmetric lower-lip movement); higher scores indicate better aesthetic and functional outcomes. |
1、3、6 months
|
|
Smile Improvement Score
時間枠：1、3、6 months
|
Investigator-assessed improvement in smile aesthetics using the Smile Improvement Score (SIS), a subjective grading system for lip posture during smile. Frontal smile photographs are compared with baseline; scores range from 0(no improvement) to 3 (excellent improvement, symmetric smile); higher scores indicate better smile outcome. |
1、3、6 months
|
協力者と研究者
スポンサー
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (推定)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
追加の関連 MeSH 用語
その他の研究ID番号
- 2024(170)
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
米国FDA規制機器製品の研究
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