Multicenter, double-blind study comparing SLI-F06 to vehicle formulation buffer for the improvement in scar appearance and wound strength in routine surgical excisions, as well as post-operative abdominoplasty scar appearance.

The study is divided into 2 parts where Part A is a Phase I safety/proof of concept study of small scars pre-abdominoplasty, and Part B is a Phase IIa study of post-abdominoplasty scars.

In Part A of the study, subjects will have their abdominoplasty site mapped to accommodate a series of excisions depending on pannus size. All excisions to be treated with SLI-F06 will be on one side of the mapped area (i.e., left side or right side) and vehicle treated excisions will be on the other side of the mapped area. At time of abdominoplasty the excision site will be harvested and processed.

In Part B of the study, subjects who complete Part A will be randomly assigned to receive injections of SLI-F06 along one half (left or right) of the abdominoplasty incision and control injections along the other half. The subject will undergo routine wound care and will attend study follow-up visits following abdominoplasty. The entire incision will be treated post-operatively in precisely the same manner.

Duration of study-approximately 26 months.

Inclusion Criteria:

1. Outpatient, male or female of any race, 18 years of age or older. Female subjects of childbearing potential must have a negative urine pregnancy test (UPT) at Visit 1a and 1b and practice a reliable method of contraception throughout the study.
2. Seeking or scheduled for standard elective abdominoplasty.
3. Willing to undergo directed excisions and follow-up prior to abdominoplasty and to undergo all follow-up visits after abdominoplasty.
4. Willing to undergo directed excisions under local anesthetic
5. Be able to follow study instructions and likely to complete all required visits.
6. Sign the Institutional Review Board (IRB)-approved Informed Consent Form (ICF), which includes the Photographic Release Form and HIPAA, prior to any study-related procedures being performed.

Exclusion Criteria:

1. Female subjects that are pregnant, breast-feeding, or of childbearing potential and not practicing reliable birth control.
2. Known hypersensitivity or previous allergic reaction to any constituent of the investigational product (IP).
3. History of diabetes mellitus or a Hemoglobin (HgB) A1C greater than 5.7 percent.
4. Morbid obesity (i.e., BMI >40).
5. History of prior abdominal surgery.
6. History of abdominal liposuction, cryolipolysis, focused ultrasound or other fat reduction procedures in or near the anterior abdomen within 12 months of baseline.
7. History of poor or delayed wound healing such as a prior wound dehiscence, chronic wound or leg ulcer.
8. History of or evidence of a genetic collagen disorder such as Ehlers-Danlos syndrome.
9. Operating Physician unable to design an abdominoplasty incision area of at least 25 cm wide by 12 cm tall at the center of the fusiform.
10. The presence of any abnormality of the skin within the area of the proposed abdominoplasty that, in the opinion of the Principal Investigator (PI), could interfere with the excision process or grading of the resultant surgical scar.
11. Use of any restricted concomitant medications/procedures or tobacco/inhaled nicotine products within a restricted time period.
12. Allergy to or intolerance of local anesthetics.
13. Medical or psychiatric conditions that may increase the risk associated with study participation or may interfere with interpretation of study results or compliance of the subject and, in the opinion of the PI, would make the subject inappropriate for study entry.
14. Any personal, familial, employment or financial situation that could impede the subject's ability to attend all study visits and successfully complete the entire clinical study.
15. Clinically significant alcohol or drug abuse, or history of poor cooperation or unreliability.
16. Exposure to any other investigational drug/device within 30 days prior to study entry.

In Part A, there were 140 treated scars and 140 control scars per subject for a total of 280. In Part B, there was one abdominoplasty incision per patient, with the left or right side receiving treatment or control. Each subject served as their own control.

Subjects were assessed at Visit 4a (Day 29), Visit 5a (Day 57 - Group 2 only), Visit 6a (Day 85 - Group 1 only), Visits 3b-12b (M1-3, 6, 9, 12, 15, 18, 21 and 24 at study exit).

No difference in definition

Systematic Assessment: Subjects were questioned for the occurrence of any new or worsening signs or symptoms at each visit. Safety laboratory tests were conducted at select study visits. Clinically significant adverse events were reported.