Safety and Effectiveness of ELLANSÉ®-S Dermal Filler in the Treatment of Nasolabial Folds

Plain-language summary

The study will be a prospective, randomized, multi-center, split-face, controlled, double-blind clinical trial to evaluate the safety and effectiveness of ELLANSÉ®-S for the treatment of NLFs. Subjects will be randomized to receive treatment (ELLANSÉ®-S) in one NLF and control (Radiesse®) in the contralateral NLF. A total of 126 subjects will be treated. The control and test articles will be supplied in sterile ready-to-use, pre-filled syringes. Initial treatment and any 4-week touch-up will be done consistent with initial randomization. Any retreatment(s) in either NLF will be with ELLANSÉ®-S. Subjects who meet Inclusion/Exclusion criteria will receive an initial treatment, an optional touch up at the 4-week visit, and may be eligible to receive retreatment at either 12 or 18 months after treatment (determined by when the fold has returned to baseline score, or the fold has lost at least 1 point on the Wrinkle Severity Rating Scale (WSRS) from optimal improvement). Retreatment to one side is allowed if only one side qualifies, but the other side may not be retreated at a later visit. If retreatment occurs, the subject may also be eligible to receive an optional touch up at the 4-week follow up visit. If a touch up occurs after the initial or retreatment injection, the subject will return for an additional safety visit 2 weeks after each injection. A week 4 safety visit will occur after retreatment touch-up. Primary effectiveness will be assessed at 6 months. All subjects will be followed for a minimum of 24 months after the initial treatment phase. After each injection, subjects will be contacted by telephone call/email after 72 hours and will return for a safety visit 2 weeks after treatment. At the week 4 visit, subjects will be assessed for a touch up. If a touch up is indicated as determined by the investigator, the investigator will use the same material as that used for initial treatment for the respective side. In addition, subjects will be seen at 6 weeks 3, 6, 9, 12, 18, and 24 months (from the end of the initial treatment phase). Subjects receiving a retreatment (at 12 or 18 months after treatment) will return for additional safety visits at 2 weeks and 3 and 6 months after this retreatment (the 6 month coincides with regularly scheduled visit). Subjects will have the option of a retreatment touch up injection at 4 weeks after retreatment, and if they do will have another call at 72hrs and a week 2 safety visit. The validated Wrinkle Severity Rating Scale will be used for assessment of the primary effectiveness endpoint (1). Assessment of the secondary effectiveness endpoints will include use of WSRS, the Global Aesthetic Improvement Scale (GAIS), VAS pain assessment, the validated FACE-Q Appraisal of Nasolabial Folds Questionnaire, the FACE-Q Satisfaction with Treatment Outcome Scale and the FACE-Q Age Appraisal VAS. The study will last approximately 30 months. All subjects will be recruited within approximately 6 months after the recruitment of the first subject and followed for a minimum of 24 months after the initial treatment visit. Subjects receiving a retreatment (at 12 or 18 months) will receive a telephone call/email 72 hours after retreatment and they will return for an additional safety visit 2 weeks after retreatment. Subjects may receive a retreatment touch up at 4 weeks after retreatment, and if touched up, will have safety visits at 2 and 4 weeks. All retreated subjects will also be asked to attend month 3 and month 6 safety visits. The 6-month safety visit will correspond with the next study visit (e.g., 18 month or 24-month visit depending on when they are reinjected) 126 male and female subjects will be enrolled. This enrollment number accounts for a 20% attrition rate, to ensure an adequate safety population for long-term follow-up, and a Per Protocol Set (PPS) of at least 101 NLFs per treatment arm. At least 20% of treated subjects will have Fitzpatrick Skin Types IV, V, and VI. Of these, at least, 10% will be Type IV, 5% Type V and 5% Type VI. The investigative sites will be encouraged to enroll both male and female subjects. In addition, up to 2 non-randomized, non-split-face run-in subjects will be treated with ELLANSÉ®-S by each investigator to allow the investigator to become familiar with injection characteristics. This run-in cohort will be required to meet all study inclusion/exclusion criteria and will be followed in the same manner as the non-run-in cohort. Up to seven US sites will participate.

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