Safety Study of Acellular Adipose Tissue for Soft Tissue Reconstruction

This is a 12-week, prospective, Phase I study in healthy volunteers assessing the safety and
tolerability of acellular adipose tissue (AAT) intended for the repair of soft tissue defects
in humans. Up to five (5) 2 milliliters (mL) subcutaneous injections of AAT will be
administered into redundant tissues previously identified and scheduled for surgical removal
in an elective surgical procedure.

Participants will be enrolled and assigned chronologically to one of five excision time
points: Weeks 2, 4, 6, 8, and 12 post-injection. Implants will be injected on Day 0. A safety
visit will occur at 1 week post-injection; follow-up visits will occur at Weeks 2 and 4 (for
patients who still have implants) post-injection and at time of tissue excision. At the end
of their assigned study time point, participants will have all AAT implants removed
simultaneously during their elective surgery. Implants will be assessed using
histopathological analyses including hematoxylin and eosin staining and flow cytometry. The
primary outcome of safety will be determined by the incidence and rate of adverse /
unanticipated events. Secondary outcomes include histopathological assessment of the
explanted implants and tolerability determined by participant-reported comfort and
physician-reported ease-of-use with the intervention.

Inclusion Criteria:

- Healthy men and women aged 18-65 years who have sought elective surgery for the
removal of redundant tissue of the abdomen (abdominoplasty or panniculectomy) or arm
(brachioplasty).

- Willingness to delay elective surgery up to 12 weeks in order to participate in the
study.

- Consent to photography for research purposes.

- Willingness to follow study requirements.

- Ability to give informed consent.

- Participants must be willing to perform follow up visits for up to 5 months.

- Undergo complete blood count (CBC) with Differential and Serum Chemistry. (Results
must fall within 1.5 times the normal ranges for all values for candidates to be
eligible.)

- Men and Women of reproductive potential: Willingness to use approved methods of birth
control or abstain from sexual intercourse from screening until removal of the AAT
implants.

- Definition of non-childbearing potential for Women: amenorrhea (previous 12
months) or surgically sterile (bilateral tubal ligation, bilateral oophorectomy,
or hysterectomy).

- Definition of non-reproductive potential for Men: confirmed surgically sterile
(vasectomy >3 months prior to screening).

Exclusion Criteria:

- Patients seeking elective surgery for the removal of redundant tissue from areas other
than the abdomen or arm.

- Use of AAT in patients exhibiting autoimmune connective tissue disease is not
recommended. When applied properly, AAT has been shown to support the migration of
host cells from the surrounding tissue. Therefore, this study will exclude patients
with conditions that could inhibit migration of host cells including, but not limited
to, the following:

- Fever (oral temperature >99º F at time of screening)

- Insulin dependent diabetes

- Low vascularity of the tissue intended for elective excision

- Local or Systemic Infection

- Mechanical Trauma

- Poor nutrition or general medical condition

- Dehiscence and/or necrosis due to poor revascularization

- Specific or nonspecific immune response to some component of the AAT material

- Infected or nonvascular surgical sites

- Known cancer or receiving treatment for cancer

- Pregnant or Lactating females

- Inability to cooperate with and/or comprehend post-operative instructions

- Inability to speak or read English

- Known allergy or sensitivity to Penicillin, Streptomycin, or Amphotericin B

- Any other reason the study physicians judge would be a contraindication for receiving
AAT injections