The aim of this trial is to evaluate the safety and efficacy of an autologous muscle stem cell therapy in the treatment of congenital urinary incontinence in isolated epispadias.

Epispadias is the mildest form of exstrophy-epispadias complex (EEC); a congenital malformation disorder involving the midline abdominal and genitourinary structures. Patients with epispadias have a defect in the urethral sphincter resulting in urinary incontinence. This trial investigates the injection of autologous primary human muscle stem cells into the urethral sphincter with the aim of repairing the defect and restore the anatomic ability for continence.

Eligible participants will undergo muscle biopsy during a routine cystoscopy. Acquired muscle tissue is used for the isolation and expansion of muscle stem cells ex-vivo. Muscle stem cells are injected into the urethral sphincter under visual control using cystoscopy. Participants are assessed for safety and efficacy for a minimum of 12 months post-intervention.

Inclusion Criteria:

• Male
• Isolated epispadias
• Aged ≥ 3 years
• Urinary incontinence as defined according to the International Children´s Continence Society
• Informed consent

Exclusion Criteria:

• Acute or chronic inflammatory local or systemic disease
• Coagulation Disorder
• Previous adverse reaction to anesthesia
• Congenital heart defect, cardiac arrhythmia