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A Randomized Controlled Trial of Open Surgical vs. Minimally-invasive Voluntary Adult Male Circumcision

A Randomized Controlled Trial of Open Surgical vs. Minimally-invasive Voluntary Adult Male Circumcision

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01688310
Enrollment
200
Registered
2012-09-19
Start date
2012-08-31
Completion date
2013-03-31
Last updated
2013-09-10

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

Conditions

Surgical Technique

Keywords

Gomco clamp instrument, Tissue adhesive, Open surgical circumcision, Minimally-invasive circumcision

Brief summary

This proposed randomized controlled trial will provide important data which will inform and enable the Mozambican government and global health programs to more effectively scale-up circumcision services. The investigators postulate that voluntary medical male circumcision using the Gomco clamp coupled with tissue adhesive meets WHO criteria for the ideal method: it is much easier to learn, faster, safer for both surgeons and patients, heals sooner, and is more cost effective than any other currently available technique.

Detailed description

Voluntary medical male circumcision (VMMC) is a priority preventive intervention and Mozambique is a priority country for VMMC scale-up. PEPFAR recently estimated that one HIV infection would be prevented between now and 2025 for every seven circumcisions performed in Mozambique. Sofala Province, where the study will be conducted, has an HIV prevalence of 13% among men and 18% among women. Approximately 8% of men aged 15-49 in Sofala Province, where the study will take place, are currently circumcised. In spite of their widely acknowledged drawbacks, open surgical techniques are the only VMMC techniques the President's Emergency Plan for AIDS Relief (PEPFAR) program currently allows in Africa. According to the Framework for Clinical Evaluation of Devices for Adult Male Circumcision (WHO, 2011): WHO and other health authorities wish to identify one or more devices that (a) would make the VMMC safer, easier, and quicker; (b) would have more rapid healing than current methods and/or might entail less risk of HIV transmission in the post-operative period; (c) could be performed safely by health-care providers with a minimal level of training; and (d) would be cost-effective compared to standard surgical methods for male circumcision scale up. This proposed randomized controlled trial will provide important data which will inform and enable the Mozambican government and PEPFAR to more effectively scale-up circumcision services. The investigators postulate that VMMC using the Gomco clamp coupled with tissue adhesive meets WHO criteria for the ideal method: it is much easier to learn, faster, safer for both surgeons and patients, heals sooner, and is more cost effective than any other currently available technique. The investigators propose a randomized controlled trial (RCT) comparing this minimally-invasive circumcision technique to the open surgical technique: * Gomco clamp with tissue adhesive: 100 men * Open surgical circumcision: 100 men The Gomco clamp is an FDA-approved device widely used in the US, but there are few data on its use in Africa. Tissue adhesive is widely used in multiple areas of medicine; specifically, multiple observational studies and RCTs have shown cyanoacrylate tissue adhesives to be superior to suture closure in circumcision in boys. The investigators refer to Gomco clamp circumcision coupled with tissue adhesive as a 'new' technique because these two independently-validated components have only been coupled in observational studies among men, and in randomized controlled trials among pre-pubertal boys, but never before in an RCT among adult men. The open surgical method is PEPFAR-approved and will serve as the control intervention. Population: Men \> 18 years of age who desire male circumcision Sample size: 200 (100 men in each group) Study design: Randomized controlled trial Intervention: Gomco clamp circumcision plus tissue adhesive vs. open surgical circumcision Follow-up visits: 2 days, 7 days, 14 days and 28 days. Optional 42 day follow-up if not completely healed by 4 weeks.

Interventions

PROCEDUREGomco Clamp with Tissue Adhesive

According to WHO (2011), the Gomco clamp has …an impeccable safety record. In the USA, where it is estimated that well over 1 million neonates are circumcised each year, the Gomco clamp has become the leading instrument used to perform non-ritual male circumcision. Tissue adhesive is widely used in multiple areas of medicine; specifically, multiple observational studies and RCTs have shown cyanoacrylate tissue adhesives to be superior to suture closure in VMMC.

The World Health Organization, in its Manual for Male Circumcision under Local Anaesthesia, describes three open surgical techniques (forceps assisted, dorsal slit and sleeve technique), all three of which involve (a) exposure of subcutaneous tissues and (b) suturing for hemostasis and for skin closure.

Sponsors

University of Pittsburgh
CollaboratorOTHER
Catholic University of Mozambique
CollaboratorOTHER
Universidade Católica de Moçambique
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Healthy men \> 18 years of age requesting circumcision * No penile anatomical abnormalities or infections * Able to provide informed consent to participate * Willing to participate in follow-up visits

Exclusion criteria

* Current illness * Penile abnormality or infection which contraindicates or would complicate circumcision * History of bleeding disorder * Past reaction to local anesthetic

Design outcomes

Primary

MeasureTime frameDescription
Intraoperative Duration1 yearTime it takes for procedure from first manipulation of tissue under local anesthesia to dressing.

Secondary

MeasureTime frameDescription
Difficulty in Learning and Performing Technique1 yearEvaluated by doctor survey, 5 point Likert scale: 1. Gomco technique is much easier 2. Gomco technique is easier 3. Neutral 4. Open surgical technique is easier 5. Open surgical technique is much easier
Time Required for HealingWithin 6 weeks after surgeryTime required for healing
Direct CostsWithin 6 weeks after surgerythe cost of labor, supplies and equipment
Pain Experienced2 days after surgeryPain experienced during and after the procedure using Pain Questionnaire with 10 point pain scale (0 signifies no pain and 10 signifies maximal pain)
Overall Patient SatisfactionWithin 6 weeks after surgeryPatient satisfaction evaluated with patient satisfaction questionnaire using five point Likert scale.
Cosmetic ResultWithin 6 weeks after surgeryCosmetic result evaluated by classification of scar line as regular (straight without any irregularity), irregular (not completely straight), or scalloped (with a wavy appearance).

Other

MeasureTime frameDescription
Adverse Events1 yrIntraoperative and post-operative adverse events, such as bleeding, hematoma, and infection

Countries

Mozambique

Participant flow

Recruitment details

Recruitment between October 30, 2012 and February 2, 2013. University teaching clinic.

Pre-assignment details

241 interviewed, Excluded (n=41) * Inclusion criteria not met (n=19) * Under 18 years of age (n=17) * Phimosis (n=2) * Declined to participate (n=22) 200 were randomized and underwent circumcision in the arm allocated

Participants by arm

ArmCount
Open Surgical Circumcision
Open surgical techniques, which are commonly used for circumcision in Subsaharan Africa (and the only technique permitted by PEPFAR), require good surgical skills and minor complications are common.
100
Gomco Clamp With Tissue Adhesive
Coupling removal of the foreskin with the Gomco clamp followed by wound sealing with tissue adhesive results in a procedure that can be performed by generalist doctors using the same technique in all age groups.
100
Total200

Baseline characteristics

CharacteristicGomco Clamp With Tissue AdhesiveOpen Surgical CircumcisionTotal
Age Continuous22.3 years
STANDARD_DEVIATION 4.7
22.8 years
STANDARD_DEVIATION 4.9
22.5 years
STANDARD_DEVIATION 4.8
Age, Customized
18-20 yrs
49 participants43 participants92 participants
Age, Customized
21-24 yrs
27 participants26 participants53 participants
Age, Customized
>=25 yrs
24 participants31 participants55 participants
Region of Enrollment
Mozambique
100 participants100 participants200 participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants
Sex: Female, Male
Male
100 Participants100 Participants200 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
7 / 10018 / 100
serious
Total, serious adverse events
0 / 1000 / 100

Outcome results

Primary

Intraoperative Duration

Time it takes for procedure from first manipulation of tissue under local anesthesia to dressing.

Time frame: 1 year

Population: All participants

ArmMeasureValue (MEAN)Dispersion
Open Surgical CircumcisionIntraoperative Duration22.5 MinStandard Deviation 6.6
Gomco Clamp With Tissue AdhesiveIntraoperative Duration12.8 MinStandard Deviation 2.7
Secondary

Cosmetic Result

Cosmetic result evaluated by classification of scar line as regular (straight without any irregularity), irregular (not completely straight), or scalloped (with a wavy appearance).

Time frame: Within 6 weeks after surgery

ArmMeasureGroupValue (NUMBER)
Open Surgical CircumcisionCosmetic ResultIrregular35 participants
Open Surgical CircumcisionCosmetic ResultRegular54 participants
Open Surgical CircumcisionCosmetic ResultScalloped4 participants
Gomco Clamp With Tissue AdhesiveCosmetic ResultRegular93 participants
Gomco Clamp With Tissue AdhesiveCosmetic ResultIrregular1 participants
Gomco Clamp With Tissue AdhesiveCosmetic ResultScalloped0 participants
Secondary

Difficulty in Learning and Performing Technique

Evaluated by doctor survey, 5 point Likert scale: 1. Gomco technique is much easier 2. Gomco technique is easier 3. Neutral 4. Open surgical technique is easier 5. Open surgical technique is much easier

Time frame: 1 year

ArmMeasureValue (MEDIAN)
Open Surgical CircumcisionDifficulty in Learning and Performing Technique2.5 units on Likert scale
Gomco Clamp With Tissue AdhesiveDifficulty in Learning and Performing Technique2 units on Likert scale
Secondary

Direct Costs

the cost of labor, supplies and equipment

Time frame: Within 6 weeks after surgery

Secondary

Overall Patient Satisfaction

Patient satisfaction evaluated with patient satisfaction questionnaire using five point Likert scale.

Time frame: Within 6 weeks after surgery

ArmMeasureGroupValue (NUMBER)
Open Surgical CircumcisionOverall Patient SatisfactionVery satisfied70 participants
Open Surgical CircumcisionOverall Patient SatisfactionSatisfied29 participants
Open Surgical CircumcisionOverall Patient SatisfactionNot satisfied0 participants
Gomco Clamp With Tissue AdhesiveOverall Patient SatisfactionVery satisfied56 participants
Gomco Clamp With Tissue AdhesiveOverall Patient SatisfactionSatisfied39 participants
Gomco Clamp With Tissue AdhesiveOverall Patient SatisfactionNot satisfied0 participants
Secondary

Pain Experienced

Pain experienced during and after the procedure using Pain Questionnaire with 10 point pain scale (0 signifies no pain and 10 signifies maximal pain)

Time frame: 2 days after surgery

ArmMeasureValue (MEAN)Dispersion
Open Surgical CircumcisionPain Experienced2.5 units on 10 point pain scaleStandard Deviation 1.9
Gomco Clamp With Tissue AdhesivePain Experienced1.8 units on 10 point pain scaleStandard Deviation 1.6
Secondary

Time Required for Healing

Time required for healing

Time frame: Within 6 weeks after surgery

ArmMeasureGroupValue (NUMBER)
Open Surgical CircumcisionTime Required for HealingHealed at 2 weeks2.1 percentage of participants
Open Surgical CircumcisionTime Required for HealingHealed at 4 weeks87.8 percentage of participants
Open Surgical CircumcisionTime Required for HealingHealed at 6 weeks98.9 percentage of participants
Gomco Clamp With Tissue AdhesiveTime Required for HealingHealed at 2 weeks9.4 percentage of participants
Gomco Clamp With Tissue AdhesiveTime Required for HealingHealed at 4 weeks87.4 percentage of participants
Gomco Clamp With Tissue AdhesiveTime Required for HealingHealed at 6 weeks100 percentage of participants
Other Pre-specified

Adverse Events

Intraoperative and post-operative adverse events, such as bleeding, hematoma, and infection

Time frame: 1 yr

ArmMeasureGroupValue (NUMBER)
Open Surgical CircumcisionAdverse EventsMild bleeding0 participants
Open Surgical CircumcisionAdverse EventsModerate bleeding (suturing required)1 participants
Open Surgical CircumcisionAdverse EventsHematoma3 participants
Open Surgical CircumcisionAdverse EventsInfection (antibiotic required)3 participants
Gomco Clamp With Tissue AdhesiveAdverse EventsInfection (antibiotic required)7 participants
Gomco Clamp With Tissue AdhesiveAdverse EventsMild bleeding4 participants
Gomco Clamp With Tissue AdhesiveAdverse EventsHematoma1 participants
Gomco Clamp With Tissue AdhesiveAdverse EventsModerate bleeding (suturing required)6 participants

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