Novoglan device for treatment of adult phimosis: Novoglan-01 open-label clinical trial on safety, efficacy and tolerability

Eric Chung; Dmitry Polikarpov; Hubert Mazure; Andrew James; Hassan Doosti; Douglas Campbell; David Gillatt

doi:10.21037/tau-23-91

Novoglan device for treatment of adult phimosis: Novoglan-01 open-label clinical trial on safety, efficacy and tolerability

Transl Androl Urol. 2023 Jul 31;12(7):1050-1061. doi: 10.21037/tau-23-91. Epub 2023 Jul 25.

Authors

Eric Chung¹, Dmitry Polikarpov², Hubert Mazure³, Andrew James⁴, Hassan Doosti⁵, Douglas Campbell⁶, David Gillatt⁷

Affiliations

¹ Department of Urology, Princess Alexandra Hospital, Woolloongabba, QLD, Australia.
² Department of Urology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia.
³ HGM Consultants, Winston Hills, NSW, Australia.
⁴ Platigo Solutions Pty Ltd., Roseville, NSW, Australia.
⁵ School of Mathematical and Physical Sciences, Macquarie University, Ryde, NSW, Australia.
⁶ Minomic International Ltd., Sydney, NSW, Australia.
⁷ Macquarie University Hospital, Macquarie University, Ryde, NSW, Australia.

Abstract

Background: At present, the only definitive treatment for adult phimosis is circumcision, which is a surgical removal of the prepuce. Novoglan is a novel device that could offer patients with phimosis an alternative to surgery. It is based on application of custom-moulded balloons for gradual skin remodelling and prepuce dilatation. This open-label clinical trial aimed to investigate the safety, efficacy and tolerability of the Novoglan treatment.

Methods: A prospective trial was conducted on 20 patients with adult phimosis recruited at Macquarie University Hospital and Princess Alexandra Hospital. After eligibility screening and enrolment, patients were provided with the Novoglan product and training. The treatment involved twice daily 10-minute applications for a duration of 4-8 weeks with patient's degree of phimosis assessed before and at 6-8 weeks after the initiation of the treatment. Participants were also asked to complete questionnaires aimed to assess the safety and tolerability of the Novoglan treatment.

Results: The treatment was successful with improved foreskin retraction in 90% of patients and all patients achieving full foreskin retraction after the treatment. Ninety-five percent of patients reported reduced level of anxiety, and over 60% of patients reported reduced pain/discomfort during sexual activity or in general. Similarly, 95% of patients were moderately-to-very satisfied with the treatment and would recommend Novoglan to others. No adverse events were observed and only 15% of participants reported minor side effects.

Conclusions: The Novoglan-01 trial demonstrated high safety, efficacy and tolerability of the Novoglan treatment for adult phimosis and its high potential as a conservative alternative to circumcision or steroid cream treatment.

Trial registration: The Novoglan-01 study has been registered with the Australia and New Zealand Clinical Trial Registry under the reference ACTRN 1262 10009 24853, dated 15 July 2021.

Keywords: Phimosis; adult male phimosis; circumcision; conservative treatment of phimosis.