Conditions: Glabellar Lines
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 600
Healthy volunteers: no

Brief summary:
The purpose of the protocol is to demonstrate the safety and the efficacy of a single injection of a new formulation of Clostridium Botulinum toxin type A haemagglutinin complex (BTX A HAC NG) to improve the appearance of moderate to severe glabellar lines (the lines between the eyebrows) and to assess the long term efficacy and safety of BTX-A-HAC NG after repeated injections.

Detailed description:
This is a multicentre study conducted in two periods. Subjects will first be enrolled to enter the double blind (DB) period Cycle 1. Subjects who are eligible for retreatment will then be offered to enter open label (OL) Cycles 2 to 5 as DB roll-over subjects. Once recruitment of the DB period is complete, the study will enrol additional BTX-naïve subjects (hereafter referred to as OL de novo subjects) into the OL period Cycle 1. All OL de novo subjects who are eligible for retreatment will also be offered to enter OL Cycles 2 to 5. A total of 580 subjects (180 subjects randomised in the DB period and an additional 400 de novo subjects in the OL period) are planned to complete the study.

Arms:
arm 1: Clostridium Botulinum Toxin Type A (BTX A HAC NG), total treatment volume 0.25mL will be divided into 5 injections (0.05mL per injections) injected in 5 pre-defined sites across the glabellar region. A total of 50 Units of BTX-A-HAC NG will be injected/ cycle. arm 2: The total placebo volume 0.25mL will be divided into 5 injections (0.05mL per injections) injected in 5 pre-defined sites across the glabellar region. Administered in Cycle 1 of the double blind phase only.

Interventions: intervention 1: Botulinum toxin type A intervention 2: Placebo
Intervention descriptions: intervention 1: None intervention 2: None

Protocol document: