Conditions: Urinary Bladder, Overactive
Keywords: Pediatric Solifenacin succinate suspension Phase 3 Pharmacokinetics Overactive bladder (OAB)
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 189
Healthy volunteers: no

Brief summary:
Solifenacin succinate as a tablet formulation is already on the market for the treatment of symptoms of overactive bladder in adults. For the use in children and adolescent patients a new formulation of solifenacin has been developed.

This study investigated the effect and safety of solifenacin succinate liquid suspension compared to a non-active drug (placebo) over a 12-week period. The 2 weeks prior to the double blind period was a single-blind placebo run-in period in combination with behavioral urotherapy (Non-interventional diary assisted urotherapy consisting of overactive bladder (OAB) information, awareness, instruction, life-style advice and documentation of voiding habits and symptoms for OAB), followed by a 12 week daily treatment period. The study also investigated how well solifenacin succinate suspension is taken-up by the body and how long it stays in the body during this time.

Detailed description:

Arms:
arm 1: Children aged 5 to 11 years received matching placebo suspension once a day for 12 weeks. arm 2: Children aged 5 to 11 years received solifenacin succinate suspension once a day for 12 weeks. The initial dose started with pediatric equivalent dose (PED) of 5 mg (PED5) based on weight and was titrated up or down to reach the optimal dose. The minimum dose was PED2.5, and the maximum dose was PED10. arm 3: Adolescents aged 12 to 17 years received matching placebo suspension once a day for 12 weeks. arm 4: Adolescents aged 12 to 17 years received solifenacin succinate suspension once a day for 12 weeks. The initial dose started with pediatric equivalent dose (PED) of 5 mg (PED5) based on weight and was titrated up or down to reach the optimal dose. The minimum dose was PED2.5, and the maximum dose was PED10.

Interventions: intervention 1: Solifenacin Succinate Suspension intervention 2: Placebo intervention 3: Urotherapy
Intervention descriptions: intervention 1: Children aged 5 to 11 years and adolescents aged 12 to 17 years received solifenacin succinate liquid suspension once a day orally via syringe for 12 weeks along with non interventional diary assisted urotherapy consisting of overactive bladder (OAB) information, awareness, instruction, life-style advice and documentation of voiding habits and symptoms for OAB. The initial dose started with the equivalent of 5 mg in adults, referred to as pediatric equivalent dose (PED) of 5 mg (PED5), based on body weight for three weeks and was titrated up or down in up to three titration steps of three weeks each to reach the optimal dose. Titration up or down could lead to weight-based doses equivalent to doses in adults of 2.5 mg, 5 mg, 7.5 mg or 10 mg once daily and were referred to as PED2.5, PED5, PED7.5 and PED10. The minimum dose was PED2.5, and the maximum dose was PED10. The decision to titrate up or down was made by the investigator using information from the 7 day patient diary. intervention 2: Children aged 5 to 11 years and adolescents aged 12 to 17 years received matching placebo liquid suspension once a day orally via syringe for 12 weeks along with non interventional diary assisted urotherapy consisting of overactive bladder (OAB) information, awareness, instruction, life-style advice and documentation of voiding habits and symptoms for OAB. The initial dose started with the equivalent of 5 mg in adults, referred to as pediatric equivalent dose (PED) of 5 mg (PED5), based on body weight for three weeks and was titrated up or down in up to three titration steps of three weeks each to reach the optimal dose. Titration up or down could lead to weight-based doses equivalent to doses in adults of 2.5 mg, 5 mg, 7.5 mg or 10 mg once daily and were referred to as PED2.5, PED5, PED7.5 and PED10. The minimum dose was PED2.5, and the maximum dose was PED10. The decision to titrate up or down was made by the investigator using information from the 7 day patient diary. intervention 3: Non interventional diary assisted urotherapy consisting of overactive bladder (OAB) information, awareness, instruction, life-style advice and documentation of voiding habits and symptoms for OAB.

Protocol document: