Clinical trial NCT02247193
Conditions: Cleft Lip Scarring Cleft Palate
Keywords: Botulinum Toxin Botox Craniofacial deformity
Sponsor: The University of Texas Health Science Center, Houston
Start date: 2015-12-01; Completion date: 2020-01-13
Enrollment: 30 participants; Allocation: RANDOMIZED; Intervention model: PARALLEL

Brief summary:
Objective: To determine if the use of botulinum toxin during primary cleft lip repair improves the cosmetic appearance of the cleft lip scar

Detailed description:

Arms: arm 1: Injection of botulinum toxin into cleft lip at time of surgical repair. arm 2: Injection of normal saline into cleft lip at time of surgical repair.
Interventions: intervention 1: Botulinum Toxin Type A intervention 2: Normal Saline Injection
Intervention descriptions: intervention 1: Injection of botulinum toxin at the time of surgery at cleft lip repair site. Botulinum toxin will be injected intraoperatively at 4 standardized sites in the cleft lip during surgical repair. intervention 2: Injection of normal saline into cleft lip at time of surgical repair. Saline will be injected intraoperatively at 4 standardized sites in the cleft lip during surgical repair.

Protocol documents:
Prot_SAP_000.pdf: 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Botulinum Toxin to improve cosmesis of primary cleft lip repair 
 
NCT02247193 
 
Version Date: 02/17/2015 
 
 


 
Protocol Title: 
Botulinum Toxin to improve cosmesis of primary cleft lip repair 
 
Principal Investigator: 
Dr. Jaecel Shah, MD 
 
Primary Mentor: 
Dr. John F. Teichgraeber, MD 
 
Additional Investigator: 
Dr. Matthew Greives, MD 
 
Co-Mentor/Preceptor: 
Dr. Amber Luong, MD 
 
Population: 
Pediatric patients requiring a primary cleft lip repair younger than 6 months of age. 
Goal of 40 patients total enrolled. 
Number of Sites: 
UT Health – Memorial Hermann Hospital – Texas Medical Center 
 
Study Duration: 
7/1/2014 – 6/30/2016 
 
Subject Duration: 
From pre-operative assessment to minimum 1 year follow up 
 
 
 
General Information 
 
Primary cleft lip repairs are most frequently done at 3 months of age. There are many factors that influence 
the final cosmetic appearance of the repair including wound tension. Unacceptable amounts of tension can 
lead to poor cosmetic appearance, wound dehiscence or fistula formation. Use of Botulinum toxin 
intraoperatively can reduce wound tension and therefore improve outcomes of cleft lip repairs.
 
Background Information 
 
Hypothesis: Utilizing Botulinum toxin intraoperatively during primary cleft lip repair will improve the cosmetic 
appearance of cleft lip scars. Patients with unilateral cleft lips with or without cleft palates will be considered.
 
Few studies have been done utilizing botulinum toxin to improve outcomes of cleft lip repairs. Cleft lip repair 
outcomes are influenced by a number of factors including wound tension. Wound tension is often 
unavoidable in these patients due to continuous muscle contraction from crying or feeding. Therefore, 
limiting muscle contraction could potentially improve outcomes of these repairs. Tollefson et al. in 2006 
reported the first study with targeted injections of botulinum toxin into the orbicularis oris in the cleft lip of 
patients younger than 6 months old. All three patients showed exceptional post-operative aesthetic outcomes 
at early follow up without any complications.
 
The need to chemoimmobilze musculature associated with cleft lip repair is of even greater importance as 
multiple studies have shown increased activity of these muscles. Carvajal et al. established that orbicularis 
oris activity was significantly greater in cleft lip and palate patients than those children without clefts. 
Aside from the impact this can have on the growing maxilla this increased muscle activity can be 
problematic for cleft lip repair cosmesis.
 
In 2009, Galárraga used intraoperative botulinum toxin on 5 patients all younger than 6 months of age 
undergoing a primary cheiloplasty. The study showed the botulinum toxin injections to be safe without any 
complications observed. An EMG proven decrease in muscle activity around the repair site was also seen 
as predicted.
 
Studies in adult patients have shown improved cosmetic outcomes for facial wounds when utilizing botulinum 
toxin. They have also established use of the toxin as safe in the face. Ziade et al. in 2013 showed injections of 
botulinum toxin type A within 72 hours postoperatively around facial wound repairs had better scar results at 
1 year follow up as analyzed by 6 expert specialists. Wilson in 2006, showed utilization of botulinum toxin in 
revision facial scar surgery had 90 % of patients with a highly satisfactory outcome.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Botulinum toxin to improve cleft lip repair cosmesis 
IRB NUMBEPRa:geHS1Co-fM6S-1
Jaecel Shah, MD 
IRB APPROVAL DATE: 0


Objectives 
Improve cheiloplasty outcomes with the use of intraoperative injection of botulinum toxin to clefted lip. 
 
Study Design 
 
Randomized double blinded controlled trial of pediatric patients who require a primary unilateral cleft lip 
repair younger than 6 months of age. Utilization of botulinum toxin intraoperatively at targeted locations of 
the cleft lip. Surgeon, parents and expert panel of surgeons used at the completion study will all be blinded 
to which patients received the experimental injection.
 
Control subjects will receive injections of normal saline at identical sites of the cleft lip as experimental 
subjects.
 
20 patients in each group will be enrolled.
 
Patients will be evaluated preoperatively, postoperatively at 1 week, 1 month, 3 months, 6 months and 
12 months of follow up.
 
Inclusion criteria: Unilateral cleft lip with or without cleft palate, less than 6 months of age
 
Exclusion criteria: Bilateral cleft lip, older than 6 months of age
 
Primary endpoint: Blinded assessment of wound cosmesis by plastic surgeons and parents using scar assessment 
scale. At completion of follow up use of aesthetic grading criteria of videography images as described by Reddy et 
al. in 2008. These criteria include: Matching accuracy of white roll and vermilion border, scar appearance, Cupid’s 
bow form, length of lip, nostril symmetry, alar dome form, and alar base position
 
Study Population 
 
Pediatric patients with complete unilateral cleft lip and palate less than 6 months of age undergoing cleft lip 
repair.
 
All patients who will be planned for a primary cleft lip repair will be offered to be enrolled in the 
study. Parents may choose to decline and undergo repair without enrollment in the study.
 
Patients will be recruited as they would present otherwise to the University of Texas Pediatric Plastic 
Surgery Clinic to be evaluated for repair of cleft lip.
 
Study Procedures 
 
Patient will receive intraoperative botulinum toxin injections in the upper labial musculature prior to  
the operative repair being started.
 
4 injection sites will be used two superior and inferiorly in the cleft lip, 1 unit of botulinum toxin per 
injection site to be used. This is considered low dose in the pediatric population. Depending on the patient’s 
weight it will be approximately 1 unit/kg.
 
This dosing was chosen as it has been proven safe without any complications in prior pediatric botulinum 
toxin studies.
 
This dosage has also been shown to adequately elicit muscle paresis in the head and neck.
 
Patients will have videography performed preoperatively as well at scheduled post-operative visits.
 
Parents will complete a Modified Vancouver Scar Scale at selective post-operative visits
 
The Vancouver scar scale is a widely used validated scar scale for adults, however given our study it was 
modified appropriately for pediatric populations. There is no validated scar scale for pediatric patients.
 
At the completion of the 1 year follow up period, videography will be sent to an expert panel of select plastic 
surgeons that will also use the Modified Vancouver Scar Scale to assess scar outcomes in both the control and 
experimental groups. This panel will be blinded to which patients received botulinum toxin and which 
received the control injection.
 
Videography at the completion of the study will also be assessed for the following measures: Matching 
accuracy of white roll and vermilion border, scar appearance, Cupid’s bow form, length of lip, nostril 
symmetry, alar dome form, and alar base position. Study personnel will be blinded to which patients 
received the experimental injection.
 
No invasive procedures or postoperative monitoring will be employed unless deemed medically necessary.
 
 
 
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Block Randomization 
 
Block randomization will be used for this study. The size of the blocks will not be fixed to ensure surgeons are truly 
blinded along with each arm of the study having the same number of patients. Therefore each group may have 
block sizes of 3, 5, 2, 6 and 4 to allow for a total of 20 patients. Both the ordering of blocks and their respective 
size will be blinded to eliminate any selection bias. 
 
Drug Administration and Accountability 
 
Dr. Jaecel Shah MD, Dr. Matthew Greives, MD and John Teichgraeber, MD will be responsible for botulinum 
toxin accountability. The toxin will be stored with the operating room pharmacy. As the study will be a 
randomized controlled trial, for those patients set to receive botulinum toxin, the medication will be requested 
from the OR pharmacy on the day of surgery. Prior to surgery it will be ensured the OR pharmacy has the toxin 
available. The toxin will be mixed as prescribed and 1 unit injections at 4 distinct sites will be used for a total of 
4 units administered. 
 
The pediatric plastic surgery research nurse will be responsible for notifying the operating room circulator 
whether that days block of patients will be receiving the experimental versus the control injection. 
 
Study patients will be attempted to be scheduled on the same OR days to maximize utilization of each botulinum 
toxin vial as they have a limited shelf life once mixed. Once the vial has been utilized it will be dispensed 
appropriately. The vials in the OR pharmacy will be stored in a standard cooled refrigerator as recommend by 
the manufacturer. 
 
Possible Risks to Subjects 
- 
Botulinum toxin safety has been well established. The FDA endorses that botulinum toxin use in a 
dermatologic fashion have no reported adverse side effects at the recommended doses. Studies 
which have utilized botulinum toxin in patients younger than 6 months of age have not reported 
significant adverse effects. 
- 
Transient fatigue lasting no longer than 96 hours has been noted in a study by Pascual and Pascual in 
2008 in one patient out of 74. 
- 
The likelihood of risks are low and most studies have showed no side effects while few studies have 
noted transient fatigue in less than 5% of patients. 
- 
Given that botulinum toxin takes 72 hours minimum to take effect there will be no change in the 
surgical procedure. Therefore there is no significant change in risk of the surgery itself. 
- 
Also of note this study will be using botulinum toxin doses lower than most studies already completed, 
therefore the risk should be less as the risk of botulinum toxin is dose dependent. 
- 
Two prior cleft lip studies utilizing botulinum toxin reported good outcomes with no complications 
or feeding difficulties. 
 
Rare reported adult adverse side effects of botulinum toxin include: Difficulty swallowing, breathing, speaking, 
feeding, diffuse muscle weakness, double vision, voice changes, allergic reaction and bladder dysfunction. However, 
no documented adverse effects have been noted when used at dermatologic doses on the face. 
 
 
 
Safety 
- Two studies on cleft lip patients younger than 6 months of age utilizing botulinum toxin have been 
completed without any complications and shown the toxin to be safe in this population. 
 
Prior cleft specific studies 
- Tollefson et al. in 2006 with 3 patients and Galarraga in 2009 with 5 patients used botulinum toxin 
injections in the cleft lip without any reported complications. 
 
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Prior pediatric botulinum toxin studies 
- Botulinum toxin injections are also used for a large variety of pediatric conditions safely including 
ophthalmologic, gastrointestinal and neurological. 
- Messner et al. in 2011 used 7 botulinum toxin injections in 3 patients younger than 6 months of age 
with for cricopharyngeal achalasia. Injections were done in the cricopharyngeus muscle with successful 
treatment allowing patients to eat by mouth as a result. No complications were encountered with an 
average follow up of 22 months, 3.3units/kg of botulinum toxin were used. 
- Pascual and Pascual in 2008, reviewed botulinum toxin injection safety in patients younger than 2 years 
old. 74 patients received botulinum toxin injections with 28 younger than 1 year of age. Only 1 patient 
was noted to develop transient fatigue that lasted less than 4 days without intervention. All other patients 
did well with no significant adverse effects. On average 6.55 units/kg for patients less than 1 year of age 
and 8.4 units/kg in patients 1-2 years old were used. They deemed botulinum toxin injections safe at the 
appropriate dosage. 
- Chhina et al. in 2013 showed higher dosages of botulinum toxin were safe in patients less than 2 years 
of age. Injections were done in the feet on patients with clubfeet. 239 patients and 361 feet were 
injected with 10 units/kg. No complications were noted in any patient and again deemed botulinum toxin 
injections safe. 
- Oleszek et al. in 2005 performed botulinum toxin injections for patients aged 6-18 months with 
congenital torticollis. 29.7 units of botulinum toxin were used on average for each patient. Only 2 patients 
had transient neck weakness with mild dysphagia that resolved without intervention. They showed that 
even at higher doses botulinum toxin was safe to use in the head and neck. 
- Of note our study will only use a low dose of 4 units of botulinum toxin total and will approximately be 1 
unit/kg dosing depending on the weight of our study patient. This dosage is less than most pediatric 
botulinum toxin injection studies to date and therefore should be a safe dosage. 
- As noted above a large number of studies have shown botulinum toxin to be safe at both low and high 
doses at a variety of anatomic locations including the head and neck. 
 
Safety Monitoring 
The PI, co-investigator and mentor will review any reported adverse events monthly. 
 
 
Patients feeding capabilities, respiratory status, neuromuscular function and overall health will be 
evaluated on each scheduled follow up visit.
 
Statistics 
 
Using the Modified Vancouver Scar Scale we hypothesize the average score for controls to be 7 out of 11. 
For experimental patients we expect an average score of 10 out of 11. Given a 90% confidence interval and 
standard deviation of 2.5 the necessary sample size would be 15 subjects per group using a 2 sided test.
 
Therefore 20 patients will be the goal group size for each arm of the study; botulinum toxin injection 
group versus control group.
 
The study will be terminated if any subjects display significant adverse side effects that are potentially 
life threatening including feeding, cardiovascular or respiratory complications.
 
Study subjects to be used will be all patients who will undergo a primary cleft lip repair that agree 
to participation in the study and subsequent randomization.
 
Ethics 
 
Prior to initiating the study University of Texas Health Science Center at Houston Institutional Review 
Board will need to grant approval for the study.
 
Consent will be obtained in person at the time of the pre-operative visit in the University of Texas Pediatric 
Plastic Surgery clinic. This consent will be in addition to the consent obtained for the surgical procedure. The 
known risks and adverse effects of botulinum toxin will be fully disclosed to parents prior to obtaining consent 
for the study.
 
 
 
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 
Consent will also be required to be obtained for videography that will be used pre/post operatively to evaluate 
cosmesis of the repair.
 
Data handling and record keeping 
 
Operative reports will be securely located in the Care4 EMR of Memorial Hermann Hospital which is the hospital 
affiliated with the University of Texas Medical School at Houston where the cleft lip repairs will occur.
 
All data will be securely located on a LOK IT secure flash drive as approved by the University of Texas Medical 
School at Houston. LOK IT secure flash drive is password coded and identified as a suitable way to store 
patient sensitive data.
 
Videography will also be kept on this secure LOK IT flash drive to ensure confidentiality.
 
A computer supplied and maintained by the University of Texas Medical School at Houston that is in the 
Otolaryngology resident work room will be the main computer used when accessing and analyzing 
data/images. The computer is password protected and is approved for use by the medical school for 
data collection use.
 
Images of the patient will only include the face to assess the outcomes of the repair. All images taken at 
planned post-operative visits will be taken with the same camera and calibration settings.
 
Data and images will be coded by a discrete number that will be used to identify an individual patient 
and their repair. No patient identifiers will be linked to the videos
 
Quality control and assurance 
 
Videography camera will be operated by a select number of users that have been taught the 
appropriate amount of training to operate it appropriately.
 
Camera will be calibrated prior to each session to ensure consistent videography.
 
A modified Vancouver Scar Scale will be given to parents at post-operative visits.
 
Botulinum toxin will be prepared in the same manner for each patient.
 
Publication Plan 
 
Plan to submit abstract and manuscript to reputable conferences and otolaryngology journals at the 
completion of the study.
 
 
ATTACHMENTS 
 
1. Study Schedule 
2. Consent Document 
3. Modified Vancouver Scar Scale 
4. Aesthetic grading criteria table 
 
REFERENCES 
 
 
Alvarez CM, De Vera MA, Chhina H, Williams L, Durlacher K, Kaga S. The use of botulinum type A toxin in 
the treatment of idiopathic clubfoot: 5-year follow-up. J Pediatr Orthop. 2009 Sep;29(6):570-5. doi: 
10.1097/BPO.0b013e3181b2b3d4. PubMed PMID: 19700985.
 
Carvajal R, Miralles R, Cauvi D, Berger B, Carvajal A, Bull R. Superior orbicularis oris muscle activity in children with and 
without cleft lip and palate. Cleft Palate Craniofac J. 1992 Jan;29(1):32-6; discussion 36-7. PubMed PMID: 1547249.
 
Chhina H, Howren A, Simmonds A, Alvarez CM. Onabotulinumtoxin A injections: a safety review of children with 
clubfoot under 2 years of age at BC Children's Hospital. Eur J Paediatr Neurol. 2014 Mar;18(2):171-5. PubMed 
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Christiansen G, Mohney BG, Baratz KH, Bradley EA. Botulinum toxin for the treatment of congenital entropion. Am 
J Ophthalmol. 2004 Jul;138(1):153-5. PubMed PMID: 15234303.
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De Korte CL, van Hees N, Lopata RG, Weijers G, Katsaros C, Thijssen JM. Quantitative assessment of orbicular oral 
muscle deformation after cleft lip reconstruction: An ultrasound elastography study. IEEE Trans Med Imaging 
2009; 28:1217–1222.
 
 
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 
Galárraga IM. Use of botulinum toxin in cheiloplasty: A new method to decrease tension. Can J Plast Surg. 2009 
Fall;17(3):e1-2. PubMed PMID: 20808741; PubMed Central PMCID: PMC2740606.
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Gassner HG, Sherris DA, Friedman O. Botulinum toxin-induced immobilization of lower facial wounds. Arch 
Facial Plast Surg. 2009 Mar-Apr;11(2):140-2. doi: 10.1001/archfacial.2009.3. PubMed PMID: 19289689.
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Klein AW. Complications and adverse reactions with the use of botulinum toxin. Semin Cutan Med Surg. 2001;20:109– 
120.
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Lee JS, Lee KB, Lee YR, Choi YN, Park CW, Park SD, Jung DH, Lee CS. Botulinum Toxin Treatment on Upper Limb 
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Central PMCID: PMC3713289.
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Messner A, Ho AS, Malhotra PS, Koltai PJ, Barnes MA. The use of botulinum toxin for pediatric  
cricopharyngeal achalasia. Int J Pediatr Otorhinolaryngol. 2011 Jun;75(6):830-4. PubMed PMID: 21501882.
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Semb G. A study of facial growth in patients with unilateral cleft lip and palate treated by Oslo CLP Team. 
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Sykes JM. Management of the cleft lip deformity. Facial Plast Surg Clin North Am. 2001  Feb;9(1):37-50. 
Review. PubMed PMID: 11465005.
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Tollefson T, Senders C, Sykes J, Byorth P. Botulinum toxin to improve results in cleft lip repair. Arch 
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Wilson AM. Use of botulinum toxin type A to prevent widening of facial scars. Plast Reconstr Surg. 2006 
May;117(6):1758-66; discussion 1767-8. PubMed PMID: 16651948.
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Ziade M, Domergue S, Batifol D, Jreige R, Sebbane M, Goudot P, Yachouh J. Use of botulinum toxin type A to 
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