Phase 2 Study for the Treatment of Superficial Lipomas

Inclusion Criteria: * One or more lipomas, based on clinical and histological diagnosis, which are accessible for treatment and assessment, are quantifiable along at least 2 perpendicular diameters, and have the following characteristics: * History of slow growth followed by dormancy, and stable for at least 6 months * Greatest length multiplied by greatest perpendicular width between 1 and 16 cm², inclusive * Discrete, oval to rounded in shape, not hard or attached to underlying tissue * Without changes in overlying skin (ie, inflammation, pain or tenderness, hyperpigmentation) * Located on the trunk, arms, legs, or neck * Signed informed consent. Exclusion Criteria: * Absence of significant medical conditions that could affect safety * History of surgical or deoxycholate treatment for lipomas * Treatment with an investigational agent within 30 days before ATX-101 treatment