Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift Surgery
Phase: NA
Conditions: Skin Laxity, Tissue Degeneration, Tissue Breakdown, Collagen Degeneration, Collagen Shrinkage
Sponsor: Apyx Medical

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 1 of 48 
 
 
 
CLINICAL TRIAL PROTOCOL NUMBER: APX-21-04 
 
HISTOLOGICAL EVALUATION OF HUMAN SKIN BIOPSIES TO ASSESS 
THE EFFECTS OF RENUVION APR TREATMENT AS AN ADJUNCT 
PROCEDURE IN FACELIFT SURGERY 
 
SPONSOR: APYX MEDICAL 
FUNDED BY: APYX MEDICAL 
 
DATE: MARCH 19, 2024 
VERSION: 7.0 
 
CONFIDENTIAL – PROPRIETARY INFORMATION 
 
 
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 2 of 48 
SPONSOR STATEMENT AND SIGNATURE PAGE 
Company Name:  
 
Apyx Medical 
Address: 
 
 
5115 Ulmerton Rd. Clearwater, FL 33760 
Telephone: 
 
 
800.537.2790 
Study Device: 
 
 
Apyx Plasma RF System 
Protocol Title: 
Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion 
APR Treatment as an Adjunct Procedure in Facelift Surgery 
Protocol Number: 
 
APX-21-04 
 
The investigation will be conducted in compliance with the clinical investigation plan (CIP), GCP, EN ISO 14155, the 
Declaration of Helsinki, and regulatory authority requirements. 
 
Apyx Medical (hereinafter “Study Sponsor”) maintains responsibility for the ongoing safety of this clinical trial 
involving the evaluation of the Renuvion APR system. Study Sponsor will promptly notify all investigators, the 
responsible IRB(s), and the regulatory authorities of any findings from ongoing trial monitoring activities that could 
adversely affect the safety of subjects, impact the conduct of the clinical study, or alter the IRB’s approval to continue 
the study, specifically within 5 working days of making an Unanticipated Adverse Device Effect (UADE) determination 
or 15 working days after first receiving notice of the UADE, within 10 days for Serious Adverse Event reports, and at 
least annually for routine reports.  In the event that participant safety could be directly affected by study results 
after the study has ended, Study Sponsor will notify all investigators of these results to enable investigators to 
consider informing participants as soon as possible or at least within one year of study closure.  The following 
individuals are responsible for the content of the CIP: 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Crystal Snyder  
 
 
 
 
 
 
Date 
Sr. Manager, Clinical Affairs  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Kari Larson 
 
 
 
 
 
 
Date 
Sr. Director, Clinical Affairs 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Shawn Roman 
 
 
 
 
 
 
Date 
Vice-President, R&D 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Terry Sullivan 
 
 
 
 
 
 
Date 
Vice-President, Quality Assurance & Regulatory Affairs 
 
 
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 3 of 48 
STATEMENT OF COMPLIANCE 
I have thoroughly read and reviewed this clinical investigation plan (CIP) and hereby agree to participate in this 
clinical trial sponsored by Study Sponsor. I agree to conduct this investigation according to the requirements of the 
CIP provided by the Study Sponsor and in accordance with Good Clinical Practice (GCP) as required by EN ISO 14155, 
the Declaration of Helsinki, Investigational Device Exemption (21 CFR Part 812), Protection of Human Subjects (45 
CFR Part 46), and other applicable FDA regulations, and regulations of other relevant regulatory authorities and 
conditions imposed by the reviewing Institutional Review Board (IRB) or Ethics Committee (EC). I agree that no 
deviation from, or changes to the CIP will take place without prior agreement from the sponsor and documented 
approval from the Institutional Review Board (IRB), except where necessary to eliminate an immediate hazard(s) to 
the trial participants. I agree to ensure that appropriate informed consent is obtained from all subjects prior to 
inclusion in this study.  I also agree to supervise all testing of the device involving human subjects, and to report to 
the Study Sponsor, within 24 hours, any adverse event that is serious, whether considered treatment-related or not.  
I am aware that the Study Sponsor reserves the right to discontinue this investigation at any time. 
 
I understand that this investigation will be monitored by the Study Sponsor and/or a designee employed by the Study 
Sponsor. This monitoring will involve periodic inspection of my investigational site and ongoing review of the data 
that is submitted by me to the Study Sponsor.  
 
All study data will be entered within 3 days after the study visit.  
 
I am also aware that I may be inspected by a representative of the relevant regulatory authorities, including the 
United States Food and Drug Administration, to verify compliance with applicable regulations related to clinical 
research on human subjects. 
 
My current curriculum vitae and the curriculum vitae of physicians/licensed practitioners at this institution who will 
participate as co-investigators/sub-investigators in this study will be provided to the Study Sponsor. The curriculum 
vitae will include the extent and type of our relevant experience with pertinent dates and locations. All personnel 
involved in the conduct of this study have completed Human Subjects Protection Training. 
 
I certify that I have not been involved in an investigation that was terminated for non-compliance at the insistence 
of the Study Sponsor, the IRB or EC, or other regulatory authorities. I agree to provide the Study Sponsor sufficient, 
accurate financial disclosure information.  I also agree to update financial disclosure information if any relevant 
changes occur during the investigation and for one year following the completion of the study. 
 
I understand that this CIP and the trial results are confidential, and I agree not to disclose any such information to 
any person other than a representative of the Study Sponsor or the relevant competent authorities without the prior 
written consent of the Study Sponsor. 
 
Accepted by: 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Principal Investigator Signature 
 
Principal Investigator Name 
 
 
Date 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 4 of 48 
LIST OF ABBREVIATIONS 
AE 
Adverse Event 
CRF 
Case Report Form 
CRO 
Clinical Research Organization  
DCF 
Data Clarification Form 
DRM 
Data Review Meeting  
ESU 
Electrosurgical Generator Unit 
FAS 
Full Analysis Set 
FDA 
Food and Drug Administration 
GAIS 
Global Aesthetic Improvement Scale 
GCP 
Good Clinical Practice 
ICH  
International Conference for Harmonization of Technical Requirements of Pharmaceuticals 
for Human Use  
IFU 
Instructions for Use 
IPR 
Independent Photographic Reviewer 
IRB 
Institutional Review Board 
ITT 
Intent-to-Treat 
NRS 
Numeric Rating Scale 
NSAID 
Non-steroidal Anti-Inflammatory Drug 
PP 
Per Protocol 
PPS 
Per Protocol Set 
RF 
Radiofrequency 
SAE 
Serious Adverse Event 
SAL 
Suction-Assisted Liposuction 
UADE 
Unanticipated Adverse Device Effect 
 
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 5 of 48 
PROTOCOL SYNOPSIS 
Protocol Title: 
Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR 
Treatment as an Adjunct Procedure in Facelift Surgery 
Clinical Study Device: 
The Renuvion APR Handpiece (K191542), APYX-15-TP, is intended to be used with 
compatible electrosurgical generators for the delivery of helium plasma for cutting, 
coagulation, and ablation of soft tissue during open and laparoscopic surgical procedures. 
The Renuvion/J-Plasma Precise Handpiece is compatible with the Electrosurgical 
Generator APYX-RS3 (K170188) manufactured by Apyx Medical that is indicated for 
delivery of radiofrequency energy and/or helium gas plasma to cut, coagulate, and ablate 
soft tissue during open and laparoscopic surgical procedures.  The Apyx One Console 
(K221830) is indicated for delivery of radiofrequency energy and/or helium plasma to cut, 
coagulate and ablate soft tissue during open and laparoscopic surgical procedures. The 
helium plasma portion of the generator can be used only with dedicated Renuvion/J-
Plasma handpieces. 
 
Together, the generator and handpiece are referred to as the Renuvion system. 
Development Phase: 
Post-Market 
Study Purpose: 
To gather quantifiable data on Renuvion’s impact on skin elasticity and hydration, 
indicators of skin quality, and estimate the biological skin age using DNA methylation.   
 
 
Brief Study Overview: 
This is a prospective single-arm, study of up to 10 study subjects undergoing a lower 
facelift surgery. The objective is to evaluate the effect of radiofrequency energy and/or 
helium gas plasma generated by Apyx Renuvion APR system on indicators of skin quality.  
The study will be conducted at up to three (3) investigational centers in the United States. 
Subjects will receive a lower facelift surgery and treatment with the Renuvion APR System. 
 
Two 3-5mm punch biopsy tissue samples will be taken during the facelift procedure prior 
to use of the Renuvion APR System and at the Day 180 visit.  Tissue samples will be 
assessed via microscopy, histology, and immunohistochemistry for biological markers of 
elasticity (collagen density, elastin, fibrillin-1) and hydration ([aquaporin-3, acidic 
glycosaminoglycans (GAGs), HA]). Additionally, DNA methylation will be measured in 
tissue samples to estimate the biological age of the skin. 
 
The lower facelift surgery will be performed as per the investigator’s standard clinical 
practice.  The Renuvion APR System treatment will be performed using 4 treatment passes 
with settings of 80% and 1.5 LPM of helium flow with an activation speed of approximately 
1-3cm/s; the mid/upper-face area will not be treated with Renuvion and the lower 
face/neck area will be treated with Renuvion  
 
Follow-up will occur 1 day, 2 days (optional), 7 days, 14 days, 45 days, 90 days, and 180 
days post-procedure with images and skin quality measurements taken as described 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 6 of 48 
above at baseline for evaluation. Subjects may also be seen back for follow-up at the 
investigator’s discretion.   
Number of Sites Enrolling 
Participants: 
Subjects will be recruited from up to 3 US study sites. 
Sample Size:  
N = up to 10 treated subjects; subjects enrolled may be greater than subjects treated. 
Subject Population: 
Healthy, female and male adult subjects ages 18 – 75 years old who meet the 
inclusion/exclusion criteria. 
Inclusion Criteria: 
• 
Male or female subjects, ages 18 – 75 years old. 
• 
ASA Physical Status Classification System Class I and Class II subjects. 
• 
Planning to undergo a lower facelift procedure, with or without a neck lift, at the 
investigator’s site. 
• 
Understands and accepts the obligation not to undergo any other procedures or 
treatments in the areas to be treated during study participation. 
• 
Absence of physical conditions unacceptable to the investigator. 
• 
Females of childbearing potential who are sexually active must be willing to use 
an approved method of birth control during study participation. 
• 
Willing and able to comply with protocol requirements, including study-required 
images/photos, assessments/measurements, and returning for follow-up visits. 
• 
Willing to release rights for the use of study photos, including in publication. 
• 
Able to read, understand, sign, and date the informed consent. 
• 
Able to communicate with the site via video and/or photographs, in the event of 
a virtual follow-up visit. 
Exclusion Criteria: 
• 
Subject presenting with ASA Physical Status Classification System Classes III or 
higher. 
• 
Pregnant, lactating, or plans to become pregnant during study participation. 
• 
Known hypersensitivity or allergy to tumescent anesthetic (lidocaine/ 
epinephrine). 
• 
Known hypersensitivity or allergy to ibuprofen or other NSAIDS. 
• 
Active systemic or local skin disease that may alter wound healing. 
• 
Significant or uncontrolled medical condition that in the opinion of the 
investigator participation in the study may compromise the patient’s health. 
• 
History of autoimmune disease (excluding Hashimoto’s thyroiditis). 
• 
Known susceptibility to keloid formation or hypertrophic scarring. 
• 
Cancerous or pre-cancerous lesions in the area to be treated. 
• 
Possesses a surgically implanted electronic device (i.e. pacemaker). 
• 
Serious mental health illness such as dementia or schizophrenia; psychiatric 
hospitalization in the past two years. 
• 
Participation in any other investigational study within 30 days prior to consent 
and throughout study participation. 
• 
Subject who, in the opinion of the investigator, is not an appropriate candidate 
for the study. 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 7 of 48 
• 
Subject who has had a prior facelift, neck lift, or Renuvion treatment in the 
face/neck area. 
Outcome Measures: 
1. Change in histology evaluation of biopsy tissue between the untreated portion of 
the face and the Renuvion treated portion at the D180 visit and compared to 
baseline.   
2. Analysis of all adverse events through the D180 follow-up visit. 
3. Analysis of bruising post-procedure. 
4. Analysis of swelling post-procedure. 
5. Healing profile. 
6. Analysis of bleeding during surgery. 
7. The Principal Investigator will complete a PGAIS19 assessing overall aesthetic 
improvement in the treatment area at day 45, 90, and 180 post-treatment. 
8. The subject will complete a SGAIS19 assessing overall aesthetic improvement in 
the treatment area at day 45, 90, and 180 post-treatment. 
9. The subject will complete a Patient Satisfaction Questionnaire (PSQ) at the 180-
day follow-up visit.  
10. Change in estimated biological age from baseline to D180. 
Safety Variables: 
 Prior to treatment, the subject’s medical history will be reviewed, a urine pregnancy 
test will be performed (if applicable), and a physical examination will be conducted.  
 Following study treatment and at each subsequent visit, the subject will be queried 
about adverse events, expected treatment effects, and changes in concomitant 
medications, and the treatment area will be visually examined. 
Study Duration: 
The duration from when the study opens to enrollment until completion of data analyses 
is anticipated to be 12 months. 
 
 
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 8 of 48 
TABLE OF CONTENTS 
Sponsor Statement and Signature Page .....................................................................................2 
Statement of Compliance ...........................................................................................................3 
List of Abbreviations ...................................................................................................................4 
Protocol Synopsis ........................................................................................................................5 
1. 
KEY ROLES .......................................................................................................................12 
1.1 
Internal Responsibilities ....................................................................................................................... 12 
1.2 
External Responsibilities ....................................................................................................................... 12 
2. 
INTRODUCTION: BACKGROUND INFORMATION AND SCIENTIFIC RATIONALE ................13 
2.1 
Background Information & Rationale ................................................................................................... 13 
2.1.1 .........................................................................................Device Name and Indications for Use
 ..................................................................................................................................................................... 15 
2.1.2 ................................................................................................................. Preclinical Studies
 ..................................................................................................................................................................... 17 
2.2 
Potential Risks and Benefits ................................................................................................................. 18 
2.2.1 ......................................................................................................................Potential Risks
 ..................................................................................................................................................................... 18 
2.2.2 ................................................................................................................. Potential Benefits
 ..................................................................................................................................................................... 19 
3. 
STUDY PURPOSE .............................................................................................................19 
The purpose of this study is to gather quantifiable data on Renuvion’s impact on skin 
elasticity and hydration, indicators of skin quality and estimate the biological skin age using 
DNA methylation. .....................................................................................................................19 
4. 
STUDY DESIGN AND ENDPOINTS.....................................................................................19 
4.1 
Description of the Study Design ............................................................................................................ 19 
4.2 
Duration of Study ................................................................................................................................. 20 
4.3 
Study Outcome Measures..................................................................................................................... 20 
4.3.1 ................................................................................................................... Evaluation Tools
 ..................................................................................................................................................................... 20 
5. 
SUBJECT ENROLLMENT AND WITHDRAWAL ...................................................................24 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 9 of 48 
5.1 
Study Population .................................................................................................................................. 24 
5.1.1  ................................................................................................................ Informed Consent
 ..................................................................................................................................................................... 24 
5.1.2  ......................................................................................... Pre-treatment Recruiting/Screening
 ..................................................................................................................................................................... 25 
5.2 
Inclusion Criteria .................................................................................................................................. 25 
5.3 
Exclusion Criteria .................................................................................................................................. 25 
5.4 
Strategies for Recruitment and Retention ............................................................................................ 26 
5.5  
Participant Withdrawal or Termination ................................................................................................ 26 
5.5.1 ..................................................................................... Reasons for Withdrawal or Termination
 ..................................................................................................................................................................... 26 
5.5.2 .................................................................................... Handling of Withdrawals or Termination
 ..................................................................................................................................................................... 26 
5.6 
Premature Termination or Suspension of the Study or a Study Site...................................................... 26 
6. 
STUDY DEVICE .................................................................................................................27 
6.1 
Packaging & Storage ............................................................................................................................. 27 
6.2 
Accountability ...................................................................................................................................... 27 
6.3 
Device Malfunction/Observation.......................................................................................................... 27 
7. 
STUDY PROCEDURES AND SCHEDULE .............................................................................27 
7.1 
Pre-Procedure ...................................................................................................................................... 28 
7.2 
Study Procedure ................................................................................................................................... 28 
7.3 
Follow-up Procedures ........................................................................................................................... 28 
7.3.1 Immediately Post-Procedure ................................................................................................................ 28 
7.3.2 Post-Procedure Care Instructions ......................................................................................................... 28 
7.4 
Study Schedule ..................................................................................................................................... 31 
7.4.1 ............................................................................................................................ Screening
 ..................................................................................................................................................................... 31 
7.4.2 .......................................................... Baseline Assessment (can be combined with Screening Visit)
 ..................................................................................................................................................................... 31 
7.4.3 .................................................................................................................... Treatment Visit
 ..................................................................................................................................................................... 31 
7.4.4 ........................................................................................................................... Follow-up
 ..................................................................................................................................................................... 31 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 10 of 48 
7.4.5 ............................................................................................................... Safety Assessments
 ..................................................................................................................................................................... 31 
7.4.6 ................................................................................................................. Unscheduled Visit
 ..................................................................................................................................................................... 31 
7.4.7 ...................................................................................................... End of Study (Completion)
 ..................................................................................................................................................................... 31 
8. 
ASSESSMENT OF SAFETY .................................................................................................32 
8.1 
Specifications of Safety Parameters ...................................................................................................... 32 
8.1.1 ...................................... Definition of an Expected Treatment Effect (ETE) and an Adverse Event (AE)
 ..................................................................................................................................................................... 32 
8.1.2 ................................................................................... Definition of Serious Adverse Event (SAE)
 ..................................................................................................................................................................... 32 
8.1.3 ............................................................Definition of Unanticipated Adverse Device Effects (Events)
 ..................................................................................................................................................................... 33 
8.2 
Classification of an Event ...................................................................................................................... 33 
8.2.1 .................................................................................................................. Severity of Event
 ..................................................................................................................................................................... 33 
8.2.2 .................................................................................... Relationship to the Clinical Study Device
 ..................................................................................................................................................................... 33 
8.3 
Time Period and Frequency for Event Assessment and Follow-up ........................................................ 34 
8.4 
Reporting Procedures ........................................................................................................................... 35 
8.4.1 ........................................................................................................ Adverse Event Reporting
 ..................................................................................................................................................................... 35 
8.4.2 .............................................................................................. Serious Adverse Event Reporting
 ..................................................................................................................................................................... 35 
8.4.3 ............................................................................Unanticipated Adverse Device Effect Reporting
 ..................................................................................................................................................................... 36 
8.4.4 .......................................................................................................... Reporting of Pregnancy
 ..................................................................................................................................................................... 36 
8.4.5 Reporting of Deaths ............................................................................................................................. 36 
8.5 
Study Halting Rules ............................................................................................................................... 36 
9. 
CLINICAL MONITORING ...................................................................................................37 
10. 
STATISTICAL METHODOLOGY ..........................................................................................37 
10.1 
Statistical and Analytical Plans ............................................................................................................. 37 
10.2 
Sample Size .......................................................................................................................................... 37 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 11 of 48 
11. 
SOURCE DOCUMENTS AND ACCESS TO SOURCE DATA/ DOCUMENTS ............................37 
12. 
QUALITY ASSURANCE AND QUALITY CONTROL ..............................................................37 
13. 
ETHICS/PROTECTION OF HUMAN SUBJECTS ...................................................................38 
13.1 
Ethical Standard ................................................................................................................................... 38 
13.2 
Institutional Review Board ................................................................................................................... 38 
13.3 
Participant and Data Confidentiality ..................................................................................................... 38 
14. 
DATA HANDLING AND RECORD KEEPING ........................................................................39 
14.1 
Data Collection and Management Responsibilities ............................................................................... 39 
14.2 
Investigator Records and Reports ......................................................................................................... 40 
14.2.1 ............................................................................................................ Investigator Records
 ..................................................................................................................................................................... 40 
14.2.2 ............................................................................................................ Investigator Reports
 ..................................................................................................................................................................... 41 
14.3 
Study Records Retention ...................................................................................................................... 41 
14.4 
Protocol Deviations .............................................................................................................................. 42 
14.5 
Publication and Data Sharing Policy ..................................................................................................... 42 
15. 
STUDY ADMINISTRATION ...............................................................................................42 
15.1 
 Study Investigators .............................................................................................................................. 42 
15.2 
Amendment Policy ............................................................................................................................... 43 
16. 
CONFLICT OF INTEREST POLICY .......................................................................................43 
17. 
LITERATURE REFERENCES ................................................................................................44 
APPENDIX A: Patient Satisfaction Questionnaire (PSQ)............................................................46 
APPENDIX B: PROTOCOL REVISIONS LOG .................................................................................47 
 
 
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 12 of 48 
1. 
KEY ROLES 
Persons, companies, and/or groups serving in key roles in the conduct or oversight of this clinical trial are listed in 
Table 1.1-1 and Table 1.2-1 below, including sponsor, clinical project manager for the trial, investigator responsible 
for conducting the trial, and any clinical laboratory or other institutions involved in the trial.  
1.1 
INTERNAL RESPONSIBILITIES 
TABLE 1.1-1. INTERNAL RESPONSIBILITIES 
Name 
Function 
Address 
Apyx Medical 
Sponsor 
5115 Ulmerton Road 
Clearwater, FL 
Kim Hanson, BSN, RNFA 
VP, Clinical Operations & Medical 
Affairs 
Phone: 720-480-6584 
Email: kim.hanson@apyxmedical.com 
Kari Larson 
Sr. Director, Clinical Affairs 
Phone: 801-244-0058 
Email: kari.larson@apyxmedical.com 
Terry Sullivan 
VP, Regulatory Affairs & Quality 
Assurance 
Phone: 508-918-0812 
Email: terry.sullivan@apyxmedical.com 
Shawn Roman 
VP, Research & Development & 
Clinical Affairs 
Phone: 904-382-4857 
Email: shawn.roman@apyxmedical.com 
1.2 
EXTERNAL RESPONSIBILITIES 
The administrative structure for external responsibilities includes, but is not limited to, the participants in Table 1.2-
1: 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 13 of 48 
TABLE 1.2-1. EXTERNAL RESPONSIBILITIES 
Name 
Function 
Address 
J. David Holcomb, MD 
Site Principal Investigator 
Address: 1 S. School Ave. 
                 Suite 800 
                 Sarasota, Fl 34237 
Phone:     813-694 – 4483 
Email:      drholcomb@sarasota-med.com  
Melinda Lacerna, MD 
Site Principal Investigator 
Address: 5301 4th Ave. Circle C 
                 Bradenton, Fl 34208 
Phone:    941 – 954 – 4500 
Email:      mlacerna@hotmail.com  
Comparative Biosciences, 
Inc. 
Histology Laboratory 
Address: 786 Lucerne Drive 
 
 Sunnyvale, CA 94085 
Phone:    408-738-8066 ext. 132 
 
Email:      fariba_chalajour@compbio.com  
University of Miami   
Miller School of Medicine 
Center for Genome 
Technology 
Genotyping Laboratory 
Address: 1501 NW 10th Avenue BRB RM 
528 
Miami, FL 33136 
Phone: 305 - 243 - 7039 
Email: ikonidari@med.miami.edu 
Dropbox 
Image Transfer to Sponsor 
Dropbox.com 
 
2. 
INTRODUCTION: BACKGROUND INFORMATION AND SCIENTIFIC 
RATIONALE 
2.1 
BACKGROUND INFORMATION & RATIONALE 
 
Energy has been applied in some form to tissue since the beginning of recorded history.  The practice of applying 
heat to tissue through the use of cauteries was used for thousands of years as an invaluable method of controlling 
hemorrhage.  Continuous improvement of methods for utilizing the beneficial effects of heat on tissue eventually 
led to the development of the basic concepts of electrosurgery we know today.  In October of 1926, Dr. Harvey 
Cushing used an electrosurgical unit developed by Dr. William T. Bovie to successfully remove a highly vascularized 
brain tumor from a patient after previous failed attempts.  Today, electrosurgical instruments are used in almost 
every surgical procedure performed worldwide.1 
Through this long history, the heat effects of the radiofrequency (RF) alternating current used in electrosurgery on 
cells and tissue have been well established.  Normal body temperature is 37°C and, with normal illness, can increase 
to 40°C without permanent impact or damage to the cells of our body.  However, when the temperature of cells in 
tissue reaches 50°C, cell death occurs in approximately 6 minutes.2  When the temperature of cells in tissue reaches 
60°C, cell death occurs instantaneously.3  Between the temperatures of 60°C and just below 100°C, two simultaneous 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 14 of 48 
processes occur.1  The first is protein denaturation leading to coagulation which will be discussed in more detail 
below.  The second is desiccation or dehydration as the cells lose water through the thermally damaged cellular wall.  
As temperatures rise above 100°C, intracellular water turns to steam and tissue cells begin to vaporize as a result of 
the massive intracellular expansion that occurs.  Finally, at temperatures of 200°C or more, organic molecules are 
broken down into a process called carbonization.  This leaves behind carbon molecules that give a black and/or 
brown appearance to the tissue. 
 
Understanding these heat effects of RF energy on cells and tissue can allow the predictable changes to be used to 
accomplish beneficial therapeutic results.  Protein denaturation leading to soft tissue coagulation is one of the most 
versatile and widely utilized tissue effects.  Protein denaturation is the process in which hydrothermal bonds 
(crosslinks) between protein molecules, such as collagen, are instantaneously broken and then quickly reformed as 
tissue cools.  This process leads to the formation of uniform clumps of protein typically called coagulum through a 
subsequent process known as coagulation.  In the process of coagulation, cellular proteins are altered but not 
destroyed and form protein bonds that create homogenous, gelatinous structures.  The resulting tissue effect of 
coagulation is extremely useful and most commonly used for occluding blood vessels and causing hemostasis. 
 
In addition to causing hemostasis, coagulation results in predictable contraction of soft tissue.  Collagen is one of the 
main proteins found in human skin and connective tissue.  The coagulation/denaturation temperature of collagen is 
conventionally stated to be 66.8°C, although this can vary for different tissue types.4  Once denatured, collagen 
rapidly contracts as fibers shrink to one-third of their overall length.5  This principal of thermally-induced contraction 
of collagen through denaturation and coagulation of soft tissue is well known in medicine and is used to achieve 
beneficial results in ophthalmology, orthopedic applications, and the treatment of varicose veins.  Once tissue is 
heated to the appropriate temperature, protein denaturation and collagen contraction occur resulting in a reduction 
of volume and surface area of the heated tissue.  Noninvasive use of RF devices, lasers, and plasma devices have 
been used for the reduction of facial wrinkles and rhytides caused by thermal-induced collagen/tissue contraction 
since the mid-1990s.6-11 
 
Recently, the use of thermal-induced collagen/tissue contraction has been expanded to minimally invasive 
procedures.  Laser-assisted lipolysis (LAL) devices have combined the removal of subcutaneous fat with soft tissue 
heating to reduce the skin laxity that often results from fat volume removal.  These devices are placed in the same 
subcutaneous tissue plane as a standard suction-assisted lipolysis (SAL) cannula and are used to deliver thermal 
energy to coagulate the subcutaneous tissue including the underside of the dermis, the fascia, and the septal 
connective tissue.  The coagulation of the subcutaneous tissue results in collagen/tissue contraction that reduces 
skin laxity.   
 
Normal aging results in characteristic changes in the skin and underlying connective tissue of the face, generally 
described as the “Aging Face Syndrome.” These biologic changes, which include facial rhytids and laxity, result from 
cutaneous photo damage after repeated sun exposure and other factors, such as genetic predisposition. These 
factors change the three-dimensional structure of skin collagen (e.g. crosslinking and altered 3D structure) leading 
to a loss of its inherent elasticity, and subsequently poor skin quality.  
 
Prior work has been done by van Dongen et al to define and measure skin quality18. Additionally, Nakab, et al 
evaluated improvement in skin quality biological markers using hyaluronic acid filler17. Quantifying the effect of the 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 15 of 48 
Renuvion device on skin elasticity, hydration, dermal thickness, density of dermal collagen, and quantity of fibrillin-
1, and elastin has not yet been documented and is the purpose of this clinical study. 
 
Apyx Medical Corporation’s product family of helium-based plasma technology (Renuvion/J-Plasma family of 
devices) has FDA clearance for the cutting, coagulation, and ablation of soft tissue. All devices in the product family 
system are a part of a system that consists of an electrosurgical generator unit, a handpiece, and a supply of helium 
gas.  RF energy is delivered to the handpiece by the generator and used to energize an electrode.  When helium gas 
is passed over the energized electrode, a helium plasma is generated which allows heat to be applied to tissue in 
two different and distinct ways.  First, heat is generated by the actual production of the plasma beam itself through 
the ionization and rapid neutralization of the helium atoms.  Second, since plasmas are very good electrical 
conductors, a portion of the RF energy used to energize the electrode and generate the plasma passes from the 
electrode to the patient and heats tissue by passing current through the resistance of the tissue, a process known 
as Joule heating.  These two sources of tissue heating give the Renuvion APR device some advantages during use as 
a surgical tool for the coagulation and contraction of subcutaneous soft tissue.   
 
This helium-based plasma device has technological features that result in an effective method of action for 
coagulation and contraction of soft tissue.  These features and benefits are as follows: 
1. The Renuvion APR Handpiece device achieves soft tissue coagulation and contraction by rapidly heating the 
treatment site to temperatures greater than 85°C for between 0.040 and 0.080 seconds.   
2. The tissue surrounding the treatment site remains at much cooler temperatures resulting in rapid cooling 
after the application of the energy through conductive heat transfer. 
3. Focused delivery of energy on immediate heating of the fibroseptal network resulting in immediate soft 
tissue coagulation and contraction without unnecessarily heating the full thickness of the dermis. 
4. 360° tissue treatment without the need for the user to redirect the flow of energy due to electrical energy 
taking the path of least resistance. 
5. Unencumbered delivery of power regardless of the tissue impedance due to the unique power output from 
the electrosurgical generator. 
6. Low current RF energy resulting in minimal depth of thermal effect and prevention of over-treating tissue 
when performing multiple passes. 
 
2.1.1 DEVICE NAME AND INDICATIONS FOR USE 
The Renuvion APR Handpiece is a sterile, single use electrosurgical (monopolar) device intended to be used in 
conjunction with compatible generators for the percutaneous delivery of radiofrequency energy and/or helium 
plasma for cutting, coagulation and ablation of soft tissue. The compatible Generators operate at an adjustable 
power of up to 40W (expressed as 0-100% where 100% is 40W) and provide an adjustable helium gas flow of 1-5 
LPM. 
 
Radiofrequency energy is delivered to the handpiece by the generator and used to energize the electrode.  When 
helium gas is passed over the energized electrode, a helium plasma is generated for soft tissue cutting, coagulation 
or ablation. The Renuvion APR system consists of a handpiece (Figure 1), an electrosurgical unit (ESU, Figure 2), and 
a supply of helium gas (Figure 2). RF energy is delivered to the handpiece by the ESU and used to energize an 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 16 of 48 
electrode.  When helium gas is passed over the energized electrode, a helium plasma is generated which allows for 
conduction of the RF energy from the electrode to the subject in the form of a precise helium plasma beam. 
 
 
 
FIGURE 1: RENUVION APR HANDPIECE 
 
FIGURE 2: ELECTROSURGICAL UNIT AND HELIUM TANK 
The Apyx Medical Corporation Renuvion/J-Plasma helium plasma family of products has received FDA clearance 
under 510(k) numbers K223262 and K170188. The Renuvion® APR Handpiece is intended for the delivery of 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 17 of 48 
radiofrequency energy and/or helium plasma where coagulation/contraction of soft tissue is needed. Soft tissue 
includes subcutaneous tissue. The Renuvion® APR Handpiece is indicated for use in subcutaneous dermatological 
and aesthetic procedures to improve the appearance of lax (loose) skin in the neck and submental region. The 
Renuvion® APR Handpiece is intended to be used with compatible electrosurgical generators owned by Apyx 
Medical.  
 
The Apyx One Console (K221830) is indicated for delivery of radiofrequency energy and/or helium plasma to cut, 
coagulate and ablate soft tissue during open and laparoscopic surgical procedures. The helium plasma portion of the 
generator can be used only with dedicated Renuvion/J-Plasma handpieces.   
 
2.1.2 PRECLINICAL STUDIES 
Pre-Clinical Studies to Support Safe Tissue Temperatures during Device Use 
During the use of the Renuvion system in open surgical procedures involving subdermal tissue coagulation, the tip 
of the Renuvion handpiece is placed in the subcutaneous tissue plane through the same access ports used during 
suction assisted lipolysis procedures (liposuction).  In this use, it is important to establish that both the external 
epidermal tissue temperatures and the internal subdermal tissue temperatures remain within safe limits.  The 
following pre-clinical studies were conducted to measure these temperatures on both live porcine skin tissue and ex 
vivo human skin tissue:  
1. RP-18032301:  Evaluation of Porcine Skin Tissue Epidermal Temperature During Subdermal J-Plasma 
(Renuvion) Application (Non-GLP) 
This was a pre-clinical study in which the Renuvion system was used to coagulate the subdermal tissue 
of porcine skin at various treatment parameters in order to measure the maximum temperature on the 
surface of the epidermis.  In this study, the maximum recorded epidermal surface temperatures were 
39.1oC and 40.2oC.  These temperatures were recorded after performing six consecutive passes of the 
Renuvion system under the same area of tissue.  Six consecutive passes under the same tissue was 
included in the study to represent a “worst case” scenario.  Six passes are not commonly performed 
clinically.  However, even in this “worst case” scenario the epidermal surface temperature remained 
within safe limits.  Pedroso, et.al, reported that because of superficial thermal safety concerns, the skin 
surface temperature should be maintained below 45oC.  This study was subsequently published1.  The 
summary of the published study is as follows: 
J-Plasma helium was used in porcine, liver, kidney and muscle tissue at 20%, 50% and 100% power 
and 1 L/min and 3 L/min gas flow at 1, 5, and 10 second intervals.  J-Plasma was then used in 
ovarian and uterine tissue at maximum power and gas flow settings in intervals of 1, 5, 10 and 30 
seconds.  Concluded that J-Plasma has predictable thermal spread in a variety of tissue types.  
Thermal depth of spread increased linearly with increased power setting, gas flow rate, and 
exposure time.  Even at settings that greatly exceeded the manufacturer’s recommendation, the 
depth of thermal spread associated with the J-Plasma device was less than 3 mm (regardless of the 
type of tissue) and the diameter of lateral spread was 12 mm or less.  
2. RP-18040201:  A Study Evaluating Tissue Contraction, External Tissue Temperature, and Internal 
Tissue Temperature When Using J-Plasma (Renuvion) on Ex Vivo Abdominoplasty Tissue (non-GLP) 
This was a pre-clinical study that was performed on ex vivo human tissue collected by a surgeon during 
previously conducted abdominoplasty procedures.  The Renuvion system was used to coagulate the 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 18 of 48 
subdermal tissue of the human skin samples at various treatment parameters.  During treatment, both 
the maximum external epidermal tissue temperatures and the maximum internal subdermal tissue 
temperatures were measured and recorded.  The maximum external tissue temperatures ranged from 
24.9oC to 37.8oC.  This data serves to validate the maximum external tissue temperatures of 39.1oC and 
40.2oC reported in RP-18032301 measured in a live porcine model.  The maximum internal tissue 
temperatures ranged from 40oC to 80oC.  It is known from the literature that the reported range of 
temperatures causing collagen shrinkage varies from 60oC to 80oC.  Therefore, in order to cause soft 
tissue coagulation and collagen contraction, the target internal tissue temperature should be within 
this range.  Both the external and internal temperatures remained within safe limits when using the 
Renuvion system to coagulate the subdermal tissue of human skin samples. 
 
The results of the above summarized pre-clinical testing support the safe and effective use of the 
Renuvion® system in dermatological and general surgical procedures involving subdermal tissue 
coagulation.   
2.2 
POTENTIAL RISKS AND BENEFITS 
2.2.1 POTENTIAL RISKS 
This treatment modality was designed to inherently minimize the risk to the subject. However, treatment with 
energy-based modalities (laser, radiofrequency, and plasma devices) produce subsequent heating of the soft tissue 
that could involve the following commonly Expected Treatment Effects (ETEs): discomfort/pain, edema, erythema, 
ecchymosis, hypoesthesia, temporary sensory nerve injury (touch sensitivity, itching, temporary numbness/tingling), 
transient migratory firmness, and temporary and/or transient crepitus. 
 
In addition to commonly expected treatment effects, treatment with the Renuvion APR system could involve the 
following risks: helium embolism into the surgical site due to inadvertent introduction into the venous or arterial 
blood supply system, unintended burns (deep or superficial), pneumothorax, temporary or permanent motor nerve 
injury, ischemia, fibrosis, infection, gas buildup, bleeding, hematoma, seroma, subcutaneous induration, 
pigmentation changes, increased healing time, unsatisfactory scarring, asymmetry and/or unacceptable cosmetic 
result. 
 
Risks associated with tumescent anesthesia (lidocaine and epinephrine) include blurred vision, mental/mood 
changes, drowsiness, dizziness, unusually slow heartbeat, rash, itching, swelling, anxiety, apprehensiveness, 
restlessness, tremor, weakness, sweating, palpitations, pallor, nausea and vomiting, headache, and respiratory 
difficulties. 
 
Risks associated with punch biopsy may include bleeding, bruising, pain, infection, or damage to the structures 
beneath the biopsy site (such as artery or nerve).  
 
Subjects using drugs that reduce coagulation (aspirin or NSAIDs) may experience increased bruising or bleeding at 
the treatment site. Any other medications prescribed for the procedure or after-procedure by the investigator have 
their own risks; these risks should be discussed with the subject. 
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 19 of 48 
A grounding pad is used to ground/neutralize the electrical current. Subjects undergoing radiofrequency treatment 
will be kept away from contact with metal parts which are grounded, or which have appreciable capacitance to 
earth. 
 
As the Investigator will be treating the subjects per their Standard Practice of Care, there may be additional risks 
associated with the facelift procedure. The Investigator will be responsible for properly reviewing all potential risks 
with the patient prior to treatment 
 
Any unexpected or unforeseen complications will be managed by the investigator throughout the conduct of the 
study. Unforeseen or unexpected side effects not listed above will be reported to the sponsor and regulatory 
representatives (IRB) as they occur. 
 
2.2.1.1  MINIMIZATION OF POTENTIAL RISKS 
These risks are mitigated by utilizing qualified clinical Investigators who have training and are experienced in facelift 
procedures and Renuvion procedures. In addition, risks are mitigated by including only those subjects that meet the 
study eligibility criteria.  
 
2.2.2 POTENTIAL BENEFITS 
This study is being conducted to determine if there are histological indicators of skin quality demonstrating 
improvement following the use of the Renuvion APR system.   
3. 
STUDY PURPOSE 
The purpose of this study is to gather quantifiable data on Renuvion’s impact on skin elasticity and hydration, 
indicators of skin quality and estimate the biological skin age using DNA methylation.  
 
4. 
STUDY DESIGN AND ENDPOINTS 
4.1 
DESCRIPTION OF THE STUDY DESIGN 
This study is a prospective, single-arm clinical study to be conducted at up to three clinical sites in the US. Up to 10 
subjects will be enrolled and treated if they meet the inclusion/exclusion criteria and provide written informed 
consent.  
 
Enrolled subjects meeting all entrance criteria and confirmed eligible for study treatment will be asked to participate.  
Subjects will receive a lower facelift surgery per the Investigator’s standard clinical practice and treatment with the 
Renuvion APR System. The mid/upper-face area will not be treated with Renuvion and the lower face/neck area will 
be treated with Renuvion. Treatment will consist of subdermal coagulation of soft tissue using the Renuvion APR 
handpiece.   
 
Standardized images will be taken prior to treatment and during each follow-up visit using the site’s camera system. 
Baseline assessments and pre-treatment images should be obtained within 30 days of the study treatment. 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
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4.2 
DURATION OF STUDY 
Recruitment for this study may take approximately 4-6 months. Following the treatment visit, subjects will be 
followed for a total duration of 180-days. Therefore, the anticipated total duration of the study is approximately 12 
months. 
4.3 
STUDY OUTCOME MEASURES 
1. Change in histology evaluation of biopsy tissue between the untreated portion of the face and the Renuvion 
treated portion at the D180 visit and compared to baseline.   
2. Analysis of all adverse events through the D180 follow-up visit. 
3. Analysis of bruising post-procedure. 
4. Analysis of swelling post-procedure. 
5. Healing profile. 
6. Analysis of bleeding during surgery. 
7. The Principal Investigator will complete a PGAIS19 assessing overall aesthetic improvement in the treatment 
area at day 45, 90, and 180 post-treatment. 
8. The subject will complete a SGAIS19 assessing overall aesthetic improvement in the treatment area at day 
45, 90, and 180 post-treatment. 
9. The subject will complete a Patient Satisfaction Questionnaire (PSQ) at the 180-day follow-up visit.  
10. Change in estimated biological skin age from baseline to D180. 
4.3.1 EVALUATION TOOLS 
The following evaluation tools will be used in this study: 
4.3.4.1 HISTOLOGY EVALUATION OF BIOPSY TISSUE 
Tissue samples will be assessed via microscopy, histology, and immunohistochemistry for biological markers of 
elasticity (collagen density, elastin, fibrillin-1) and hydration (HA) at Baseline and Day 180.  
The density of dermal collagen is an indicator of skin elasticity because of collagen’s role in maintaining the strength 
of the skin, helping it to resist mechanical deformation. Other biological markers of elasticity are fibrillin-1, a 
glycoprotein that supports the integrity of the dermal elastic fiber network, and elastin, an essential protein of the 
elastic fibers of the skin, such as oxytalan and elaunin. Well-studied biological markers of skin hydration include 
aquaporin-3 (AQP3), water- and glycerol-transporting membrane proteins expressed in the epidermis and 
glycosaminoglycans (GAGs), which are linear polysaccharide molecules, including HA, that bind water and help 
regulate the hydration of the dermis17. 
Two living human skin tissue samples will be collected at baseline during the facelift procedure prior to any 
treatment with the Renuvion APR system and at Day 180 post-surgery (D180) during the follow up visit. Skin punch 
biopsies ranging from 3-5 mm in diameter will be obtained from left side of the face.  One tissue sample will be taken 
from the untreated portion of the face within 2cm of the Root of the Helix and 2cm of the hairline.  Measures should 
be taken to ensure the biopsy is taken from facial skin, rather than scalp skin.  The second tissue sample will be 
obtained from cheek skin in the untreated area of the lower face within 2 cm of the treatment line. See Figure 3. 
Both biopsies will be taken prior to any treatment with the Renuvion APR System at Baseline and then again after 
treatment at the same locations at D180. The untreated skin tissue samples from non-surgical sites for each subject 
will be provided as control specimen. The tissue samples will be fixed in 10% neutral buffered formalin and prepared 
for histological and immunohistochemical assessments. In brief, tissues will be gross-trimmed, dehydrated, oriented 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 21 of 48 
and embedded in paraffin, and histology slides of sectioned tissue at 3-5 mm will be prepared. All slides will be 
stained for hematoxylin and eosin (H&E), trichrome, Verhoeff Van 21Gieson stain. Expression of biological markers 
will be assessed by immunohistochemistry (IHC) at two timepoints.  The collected samples at baseline and D180 will 
be stained for elastin and fibrillin-1.   Histopathological evaluation and the integrity of the dermal elastin and collagen 
fibers will be assessed and semi-quantitively scored via light microscopy by a board-certified pathologist. Additional 
staining may be needed at the discretion of the pathologist. 
 
FIGURE 3: BIOPSY LOCATIONS 
 
4.3.4.2 GLOBAL AESTHETIC IMPROVEMENT SCALE (GAIS) 
The Global Aesthetic Improvement Scale (GAIS) is a 5-point scale that rates global aesthetic improvement from the 
pretreatment appearance19.  In this study, both live observation and photo review are utilized by the physician or a 
qualified, delegated clinician and subject in order to assign a score. The PGAIS must be performed by the principal 
investigator, sub-investigator or qualified clinician delegated by the principal investigator. Both the PGAIS and SGAIS 
should be completed in two steps: 
• 
Based on a live assessment of the subject while referring to the subject’s pre-treatment photographs 
(subjects should be given a hand mirror for assessment); and 
• 
Based on a comparison of the subject’s pre-treatment photographs to the current post-treatment 
photographs. 
The Investigator will grade the overall improvement of treatment area as indicated in Table 3 by comparing the 
subject’s appearance at follow-up visits against a photograph taken prior to procedure.  Likewise, the subject will 
also rate their improvement compared to pre-treatment as shown in Table 4.  The GAIS results will be collected at 
the 45-day, 90-day and 180-day follow-up visits.   
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 22 of 48 
 
TABLE 2.1: GLOBAL AESTHETIC IMPROVEMENT SCALE EVALUATION - INVESTIGATOR 
Rating 
Description  
Very much improved 
Optimal cosmetic result from this procedure in this subject 
Much improved 
Marked improvement in appearance from the initial condition, but not completely optimal for this 
subject 
Improved 
Obvious improvement in appearance from the initial condition 
No change 
The appearance is essentially the same as the original condition 
Worse 
 
The appearance is worse than the original condition 
Much worse 
The appearance is much worse than the original condition 
Very much worse 
The appearance is very much worse than the original condition 
 
TABLE 2.2: GLOBAL AESTHETIC IMPROVEMENT SCALE EVALUATION - SUBJECT 
Rating 
Very much improved 
□ 
Much improved 
□ 
Improved 
□ 
No change 
□ 
Worse 
 
□ 
Much worse 
□ 
Very much worse 
□ 
 
4.3.4.3 PATIENT SATISFACTION QUESTIONNAIRE (PSQ) 
The study subjects will be asked to complete a Patient Satisfaction Survey, see Appendix A, at the 180-day follow-
up visit. 
4.3.4.4 ADVERSE EVENT REPORTING 
The definitions of Adverse Events (AEs) and the subtypes are provided in Section 8 of the study protocol.  Adverse 
events will be classified by the investigator as to: 
• 
Anticipated vs unanticipated. 
• 
Serious vs not serious. 
• 
Expected Treatment Effect (ETE) vs Adverse Event (AE). 
• 
Severity:  mild, moderate, severe. 
• 
Device causality:  not related, related, undetermined. 
• 
Procedure causality:  not related, related, undetermined. 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
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Title: Clinical Trial Protocol 
Revision: 03 
 
Page 23 of 48 
4.3.4.5 2D PHOTOGRAPHY 
2D Images will be captured at baseline and follow-up visits on Days 45, 90, and 180 as per typically captured in the 
sites’ practice. Images will be uploaded to Dropbox for transfer to the sponsor. 
4.3.4.6 HEALING PROFILE 
The study investigator will document the healing progress at all follow-up visits on study-specific CRFs. 
4.3.4.7 ASA PHYSICAL STATUS CLASSIFICATION SYSTEM 
The ASA Physical Status Classification System has been in use for over 60 years. The purpose of the system is to 
assess and communicate a patient’s pre-anesthesia medical co-morbidities. The classification system alone does not 
predict the perioperative risks, but used with other factors (e.g., type of surgery, frailty, level of deconditioning), it 
can be helpful in predicting perioperative risks, see Table 5. 
TABLE 2: ASA PS CLASSIFICATION 
ASA PS Classification 
Definition 
Adult Examples, Including, but not Limited to: 
ASA I 
A normal healthy patient 
Healthy, nonsmoking, no or minimal alcohol use. 
ASA II 
A patient with mild systemic disease 
Mild diseases only without substantive functional limitations. Current 
smoker, social alcohol drinker, pregnancy, obesity (30<BMI<40), well-
controlled DM/HTN, mild lung disease. 
ASA III 
A patient with severe systemic disease 
Substantive functional limitations; One or more moderate to severe 
diseases. Poorly controlled DM or HTN, COPD, morbid obesity (BMI ≥40), 
active hepatitis, alcohol dependence or abuse, implanted pacemaker, 
moderate reduction of ejection fraction, ESRD undergoing regularly 
scheduled dialysis, history (>3 months) of MI, CVA, TIA, or CAD/stents. 
ASA IV 
A patient with severe systemic disease 
that is a constant threat to life 
Recent (<3 months) MI, CVA, TIA or CAD/stents, ongoing cardiac ischemia 
or severe valve dysfunction, severe reduction of ejection fraction, shock, 
sepsis, DIC, ARD or ESRD not undergoing regularly scheduled dialysis. 
ASA V 
A moribund patient who is not expected 
to survive without the operation 
Ruptured abdominal/thoracic aneurysm, massive trauma, intracranial 
bleed with mass effect, ischemic bowel in the face of significant cardiac 
pathology or multiple organ/system dysfunction. 
ASA VI 
A declared braindead patient whose 
organs 
(Intentionally left blank) 
 
4.3.4.8 DNA METHYLATION 
Tissue samples at baseline and at D180 will be assessed for a skin-specific age predictor (DNA methylation 
analysis).  
 
DNA methylation (DNAm) is a process that undergoes predictable age-dependent modifications. A highly accurate 
skin-specific age algorithm will analyze these modifications related to human skin health and molecular aging20 – 
quantifying the skin health/skin age of the tissue beyond the chronological age of the subject. Hallmarks of aging 
include genomic instability, telomere attrition, epigenetic alterations, loss of proteostasis, deregulated nutrient 
sensing, mitochondrial dysfunction, cellular senescence, stem cell exhaustion, and altered intercellular 
communication20. 
 
When available, biopsy tissue remaining after assessments via microscopy, histology, and immunohistochemistry 
for biological markers of elasticity (collagen density, elastin, fibrillin-1) and hydration (HA) will be transferred to the 
University of Miami and then processed using the Illumina Human Methylation EPICv2 array for DNAm data. These 
data will be analyzed to determine if Renuvion treatment is able to reverse or improve DNAm age.  

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 24 of 48 
 
Any remaining tissue sample following the DNAm analysis will be destroyed. 
5. 
SUBJECT ENROLLMENT AND WITHDRAWAL 
5.1 
STUDY POPULATION 
The study population will consist of males and females between 18 and 75 years of age who have chosen to 
participate in this clinical trial as evidenced by execution of the informed consent document and meet eligibility 
criteria defined in this protocol are eligible for participation in this clinical trial. Subjects will be considered enrolled 
into the study when they have signed an approved informed consent form. Subjects who are enrolled and do not 
meet eligibility criteria will be exited as a screen fail without study treatment. A study exit Case Report Form will be 
completed for all enrolled subjects. 
5.1.1  INFORMED CONSENT 
Informed consent will be obtained from all subjects prior to study participation. Informed consent is a process that is 
initiated prior to the individual’s agreeing to participate in the study and continues throughout the individual’s study 
participation. Extensive discussion of risks and possible benefits of participation will be provided to each participant.  
 
Investigators have ethical and legal responsibilities to ensure that the protocol is clearly explained to each subject 
considered for enrollment in the study. Compliance with this requirement should be documented on a written 
Informed Consent Form approved by the reviewing IRB. Each Informed Consent Form will include the elements 
required by FDA regulations in 21 CFR Part 50. 
 
Consent forms will be IRB-approved, and the participant will be asked to read and review the document. The investigator, 
or investigator-delegated study personnel, will explain the research study to the participant and answer any questions 
that may arise. All participants will receive a verbal explanation in terms suited to their comprehension of the purposes, 
procedures, and potential risks of the study and of their rights as research participants. Participants will have the 
opportunity to carefully review the written consent form and ask questions prior to signing. The participants should have 
the opportunity to discuss the study with their surrogates or think about it prior to agreeing to participate. The participant 
will sign the informed consent document prior to any procedures being done specifically for the study.  
 
The IRB-approved Informed Consent Form will be signed by the study personnel obtaining consent. A copy of the 
informed consent document will be given to the participants for their records. The investigative site will keep the 
original on file. The rights and welfare of the participants will be protected by emphasizing to them that the quality of 
their medical care will not be adversely affected if they decline to participate in this study. 
 
The participants may withdraw consent at any time throughout the course of the trial without any penalty or loss of 
benefits to which the subject is otherwise entitled. An Investigator may also discontinue a subject from the study without the 
subject’s consent, if the Investigator feels it is in the best medical interest of the subject.  The date and the reason for study 
withdrawal will be indicated on the Study Exit CRF.   

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 25 of 48 
5.1.1.1 CONSENT/ASSENT AND OTHER INFORMATIONAL DOCUMENTS PROVIDED TO PARTICIPANTS 
Consent forms describing in detail the study device, study procedures, and risks are given to the participant and 
written documentation of informed consent is required prior to starting intervention/administering study product 
5.1.2  PRE-TREATMENT RECRUITING/SCREENING 
Subjects will be recruited from the study site’s patients who are scheduled or planning to schedule a lower facelift.  
Study site personnel will explain the design and purpose of the study to potential study subjects. Subjects interested 
in participating and who qualify based on the pre-screening questionnaire will proceed to the informed consent 
process.  
5.1.3.1 SCREEN FAILURES 
A screen failure subject is one from whom informed consent is obtained and is documented in writing (i.e., subject 
signs an Informed Consent Form), but who does not receive a study treatment because of failure to meet all of the 
eligibility criteria. Screen failure subjects will be included in the total number of subjects enrolled (i.e., all subjects 
consented), but not counted towards the total subjects treated. 
5.2 INCLUSION CRITERIA 
Subjects must meet all of the following criteria for study enrollment: 
• 
Male or female subjects, ages 18 – 75 years old. 
• 
ASA Physical Status Classification System Class I and Class II subjects. 
• 
Planning to undergo a lower facelift procedure, with or without a neck lift, at the investigator’s site.  
• 
Understands and accepts the obligation not to undergo any other procedures or treatments in the areas to 
be treated during study participation. 
• 
Absence of physical conditions unacceptable to the investigator. 
• 
Females of childbearing potential who are sexually active must be willing to use an approved method of 
birth control during study participation. 
• 
Willing and able to comply with protocol requirements, including study-required images/photos, 
assessments/measurements, and returning for follow-up visits. 
• 
Willing to release rights for the use of study photos, including in publication. 
• 
Able to read, understand, sign, and date the informed consent. 
• 
Able to communicate with the site via video and/or photographs, in the event of a virtual follow-up visit. 
5.3 
EXCLUSION CRITERIA 
Subjects will be excluded if they meet any of the following criteria: 
• 
Subjects presenting with ASA Physical Status Classification System Classes III or higher. 
• 
Pregnant, lactating, or plans to become pregnant during study participation. 
• 
Known hypersensitivity or allergy to tumescent anesthetic (lidocaine/ epinephrine). 
• 
Known hypersensitivity or allergy to ibuprofen or other NSAIDS. 
• 
Active systemic or local skin disease that may alter wound healing. 
• 
Significant or uncontrolled medical condition that in the opinion of the investigator participation in the 
study may compromise the patient’s health. 
• 
Known susceptibility to keloid formation or hypertrophic scarring. 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 26 of 48 
• 
Cancerous or pre-cancerous lesions in the area to be treated. 
• 
Possesses a surgically implanted electronic device (i.e. pacemaker). 
• 
Serious mental health illness such as dementia or schizophrenia; psychiatric hospitalization in the past two 
years. 
• 
Participation in any other investigational study within 30 days prior to consent and throughout study 
participation. 
• 
Subject who, in the opinion of the investigator, is not an appropriate candidate for the study. 
• 
Subject who has had a prior facelift, neck lift, or Renuvion treatment in the face/neck area. 
5.4 
STRATEGIES FOR RECRUITMENT AND RETENTION 
Subjects will receive compensation for completion of the Day 45, Day 90, and Day 180 visits. Subject stipend amounts 
will be outlined in the site specific ICF and approved by the IRB prior to subject enrollment. 
 
5.5  
PARTICIPANT WITHDRAWAL OR TERMINATION 
5.5.1 REASONS FOR WITHDRAWAL OR TERMINATION 
All subjects have the right to withdraw at any point during the study without prejudice. The investigator can 
discontinue any subject, at any time, if medically necessary. Subjects must be discontinued from the investigation 
by the investigator at any time for any of the following reasons: 
• 
Withdrawal of informed consent. 
• 
Pregnancy (no further study-related procedures will be performed). 
• 
Any AEs for which treatment continuation would constitute an unacceptably high risk for the subject. 
 
The reason for subject’s withdrawal should be documented on the appropriate study specific CRF.  
5.5.2 HANDLING OF WITHDRAWALS OR TERMINATION 
The subject must undergo the recommended follow-up assessments specified for the last study visit unless 
contraindicated due to a medical condition. Withdrawn subjects will not be replaced. 
 
Subjects who are discontinued from the study due to an AE(s) will be treated according to standard clinical practice 
and will be followed-up until the final study visit/safety visit as described in Section 7.3. All pertinent information 
concerning the AE will be documented on the appropriate study-specific CRF. 
 
A subject may discontinue from the study at any time without any penalty or loss of benefits to which the subject is 
otherwise entitled. An Investigator may also discontinue a subject from the study without the subject’s consent, if 
the Investigator feels it is in the best medical interest of the subject.  The date and the reason for study withdrawal 
will be indicated on the Study Exit CRF.   
5.6 
PREMATURE TERMINATION OR SUSPENSION OF THE STUDY OR A STUDY SITE 
The study or a study site can be prematurely terminated or suspended by the sponsor. Reasons for termination of 
the study or a study site may include, but are not limited to, the following: 
• 
Subject enrollment is unsatisfactory. 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 27 of 48 
• 
The risks and benefits of continuing the study have been reassessed, and the risks outweigh any potential 
benefits. 
• 
The incidence of AEs constitutes a potential health hazard to the subjects. 
• 
New scientific data do not justify a continuation of the study. 
• 
The investigator or study site exhibit serious and/or persistent non-adherence to the protocol, the 
Declaration of Helsinki, EN ISO 14155, and/or applicable regulatory requirements. 
• 
The sponsor decides to terminate the study at any time for any other reason. 
Furthermore, the study may be prematurely ended if the regulatory authority or the IRB has decided to terminate 
or suspend approval for the study, the study site, or the investigator. 
 
If the study is prematurely terminated or suspended for any reason, the investigator must inform the subjects and 
assure appropriate follow-up treatment. Within the timeframes noted in applicable regulations, the sponsor will 
promptly inform the investigators, study sites, the IRB, and regulatory authorities of the termination or suspension 
of the study, as well as provide reasons for the action. 
6. 
STUDY DEVICE 
FDA-cleared devices shipped for use in clinical investigations conform to the applicable general safety and 
performance requirements (GSPR) apart from the aspects covered by the clinical investigation and that, with regard 
to those aspects, every precaution is taken to protect the health and safety of the subjects. This includes, where 
appropriate, technical, and biological safety testing and pre-clinical evaluation as well as provisions in the field of 
occupational safety and accident prevention and taking into consideration the state of the art.  Apyx Medical will 
provide devices for use with either the Apyx One Console or Ultimate Gen 2 generator in this clinical investigation.  
6.1 
PACKAGING & STORAGE 
The sponsor will provide appropriate packaging and storage instructions to the study sites. 
6.2 
ACCOUNTABILITY 
The investigator, or designee, must maintain an inventory record using the site-specific Device Disposition Form of 
study devices received, used for treatment, and returned to the Sponsor to ensure that the clinical study device will 
not be dispensed to any person who is not a subject under the terms and conditions set forth in this protocol. There 
will be 100% accountability for all clinical study devices. The clinical study site shall maintain all devices received for 
clinical trial use in a locked, limited access cabinet or room until the end of the study unless they are returned to 
Apyx while the study is being conducted, such as at the end of study treatments. 
6.3 
DEVICE MALFUNCTION/OBSERVATION 
All malfunctions of, or defects of the delivery system will be reported to the Sponsor by the investigational sites.  
This will include situations where the delivery system did not perform as intended; user errors; study 
device/component being physically defective, including out of the box failure. 
7. 
STUDY PROCEDURES AND SCHEDULE 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 28 of 48 
7.1 
PRE-PROCEDURE 
Study subjects will have verification of eligibility criteria, a brief general examination including medical history, and 
pre-procedure assessments as detailed below completed within 30 days prior to undergoing the study procedure. 
In response to the ongoing coronavirus disease (COVID-19) pandemic, preoperative testing can be completed at the 
Investigator’s discretion.  Pre-operative testing should be performed as close to the scheduled study procedure as 
feasible, but in time to get the results. 
 
The following pre-treatment assessments will be performed:  
• 
Brief medical history and physical examination per the Investigator’s standard of care. 
• 
Urine pregnancy test (for females of childbearing potential). 
• 
Baseline imaging using the site’s photography system. 
• 
ASA Physical Status. 
 
Medications the subject is taking upon study entry should also be documented on the Case Report Forms (CRF). All 
concomitant prescription medications taken during study participation will be recorded on the appropriate study 
specific CRF. For this protocol, a prescription medication is defined as a medication that can be prescribed only by a 
properly authorized/licensed clinician. Medications to be reported on the CRF and entered on the eCRF are 
concomitant prescription medications, over-the-counter medications, and non-prescription medications. 
Medications used for analgesia and/or anesthesia should also be recorded as concomitant medication. To ensure 
the capture of the foregoing information on pre-existing conditions, sites should also be attentive to the need to 
document without limitation and whenever discovered: (1) all chronic, episodic or ‘as needed’ medications used 
before study enrollment; (2) prior episodic or ‘as needed’ therapeutic interventions, procedures, or hospitalizations; 
and (3) recent or planned surgical procedures.  
7.2 
STUDY PROCEDURE 
The lower facelift surgery will be performed as per the investigator’s standard clinical practice.  The Renuvion APR 
System treatment will be performed using 4 treatment passes with settings of 80% and 1.5 LPM of helium flow with 
an activation speed of approximately 1-3cm/s. See Section 4.3.4.1 for detailed instructions regarding collection, 
storage, and shipment of punch biopsy tissue samples. For all subjects the Renuvion APR System will be used in open 
surgery between the skin and SMAS on the neck, submentum, and lower facial skin flap. The mid/upper-face area 
will not be treated with Renuvion.  A video or photograph of the face after the biopsies will be taken prior to 
Renuvion treatment to ensure proper location of punch biopsies at the D180 visit.   
Procedure data and adverse events will be captured. 
7.3 
FOLLOW-UP PROCEDURES  
7.3.1 IMMEDIATELY POST-PROCEDURE  
Following the procedure, the research staff and the subject will care for the treated areas using the Post-Procedure 
Care Instructions per the Investigator’s standard clinical practice.  
7.3.2 POST-PROCEDURE CARE INSTRUCTIONS 
Subjects will be asked to return to the study site at the following times post-procedure: 
• 
1 day 
• 
2(+1) days (optional) 
• 
7 (±3) days 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 29 of 48 
• 
14 (±3) days 
• 
45 (±7) days 
• 
90 (±10) days 
• 
180 (±15) days 
 
Post-procedure assessments and 2D photographic imaging will be performed during the follow-up visits. The same 
standardized photography views will be used throughout the study.  
Due to the challenges of COVID-19, if a subject is unable to return to the office for an in-person visit, follow-up visits 
will be conducted virtually. If a visit is completed virtually, missing assessments such as photographs will be 
documented as a protocol deviation specifically noting COVID-19. Outside of photographs, study investigators and 
study staff will ensure all other assessments related to each follow-up visit are completed virtually if the visit is done 
virtually. For virtual visits, the investigator and/or study staff completing the visit and assessments will be identified 
on the case report form; as well, the manner in which the visit was completed will also be recorded (i.e. video call, 
phone call, etc.). Virtual visits should be done via video call if possible, to ensure subject identity. If a telephone call 
must be done, the investigator and/or study staff must positively identify the subject prior to conducting the virtual 
visit by requesting the subject to state their address and date of birth. Subjects will be strongly encouraged to come 
in (albeit safely) for their D180 visit; this visit is vitally important as this is the primary endpoint and photographic 
images are needed for many of the assessments. Only investigators and study staff who have been trained and 
delegated to conduct virtual visits as indicated on the delegation log may conduct virtual study visits. 
Subjects may be seen for an unscheduled appointment at any time at investigator’s discretion. 
 
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 30 of 48 
TABLE 3: STUDY REQUIRED PROCEDURES 
 
 
Baseline/ 
Pre-
Procedure 
Screening1 
Procedure 
(Day 0) 
 Day 1 
Day 
2(Optional
) 
Day 7 
Day 14 
Day 45 
Day 90 
Day 180 
 
2-3 days 
4-10 
days 
11-17 
days 
38-52 
days 
80-100 
days 
165-195 
days 
Informed Consent 
X 
 
 
 
 
 
 
 
 
Assess Inclusion/Exclusion Criteria 
X 
X 
 
 
 
 
 
 
 
Urine Pregnancy Test2 
X 
X 
 
 
 
 
 
 
 
Medical History 
X 
 
 
 
 
 
 
 
 
General Physical Exam 
X 
 
 
 
 
 
 
 
 
Review Medications 
X 
X 
X 
X 
X 
X 
X 
X 
X 
2D Photographic Images3 
X 
X 
 
 
X 
X 
X 
X 
X 
Study Procedure 
 
X 
 
 
 
 
 
 
 
Adverse Event Assessment 
 
X 
X 
X 
X 
X 
X 
X 
X 
Healing Assessment 
 
 
X 
X 
X 
X 
X 
X 
X 
Punch Biopsy 
 
X 
 
 
 
 
 
 
X 
Global Aesthetic Improvement Scale (GAIS)4 
 
 
 
 
 
 
X 
X 
X 
Patient Satisfaction Questionnaire (PSQ) 
 
 
 
 
 
 
 
 
X 
1 Pre-procedure Screening assessments to take place within 30 days prior to undergoing the procedure. 
2 Up to two urine pregnancy tests must be obtained prior to study procedure for females with child-bearing potential (one at pre-procedure 
screening and one on the day of the procedure prior to the procedure if screening and procedure are not performed on the same day). 
3Digital photographs will be taken and labeled. Standard positioning and lighting will be used for all photographs. 
4To be complete by Investigator and study subject at day 45, 90, and 180 follow-up visits. 
5To be complete by study subject at day 180 follow-up visit.  
  
 
 
 
 
 
 
 
 
 
 
 
 
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 31 of 48 
 
 
7.4 
STUDY SCHEDULE 
7.4.1 SCREENING 
• 
Obtain informed consent of potential participant verified by signature on study informed 
consent form. 
• 
Verify all preliminary/screening inclusion/exclusion criteria are met. 
7.4.2 BASELINE ASSESSMENT (CAN BE COMBINED WITH SCREENING VISIT) 
• 
Document medical history. 
• 
Obtain pregnancy screen (if applicable). 
• 
Perform baseline photography.  
• 
Document concurrent medications. 
7.4.3 TREATMENT VISIT  
• 
Obtain pregnancy screen (if applicable) prior to study treatment. 
• 
Perform pre-treatment biopsies  
• 
Perform study treatment. 
• 
Provide post-treatment instructions. 
7.4.4 FOLLOW-UP 
Subjects will be asked to return to the clinic for follow-up visits at 1, 2 (optional), 7, 14, 45, 90, and 180 days post-
treatment. At all visits, subjects will be assessed for safety and adverse events, healing progress, and protocol 
deviations. Standardized images will be completed at Day 7, 45, 90, and 180. At 45, 90, and 180-days post procedure 
study outcome measures (GAIS) will be completed.  At the 180-day follow-up appointment the subject will complete 
a PSQ and punch biopsies will be taken as described in Section 4.3.4.1; confirm only acute NSAID use (a maximum 
2-3 doses allowed), if applicable, in the prior 2 weeks. 
7.4.5 SAFETY ASSESSMENTS 
Assess for adverse events immediately post-treatment and at all follow-up visits. Healing progress will be assessed 
at all follow-up visits. 
7.4.6 UNSCHEDULED VISIT 
Investigator may see subjects for visits in addition to the protocol defined follow-up visits at their discretion. Any 
unscheduled visit or examination should be documented in the subject’s medical record and adverse event form (if 
applicable) stating the reason for the visit and any actions taken. The Sponsor should be notified of the unscheduled 
visit. 
 
7.4.7 END OF STUDY (COMPLETION) 
All subjects who have signed an Informed Consent Form will be considered enrolled in the study. Subjects who 
complete the study duration will be considered to have completed the study. The end of study will be defined as 
completion of all study visits by all enrolled subjects. If a device-related AE, SAE, or unanticipated serious device-

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 32 of 48 
related effect is ongoing at the final study visit, the subject will be followed until resolution, until the condition 
stabilizes, until the event is otherwise explained, or the subject is lost to follow-up.  
 
A study closure visit may be conducted at the study site in order to review record retention requirements, device 
disposition requirements, etc., with site personnel.  The Sponsor may choose to conduct the closure visit via 
telephone contact if appropriate. 
8. 
ASSESSMENT OF SAFETY 
8.1 
SPECIFICATIONS OF SAFETY PARAMETERS 
8.1.1 DEFINITION OF AN EXPECTED TREATMENT EFFECT (ETE) AND AN ADVERSE EVENT (AE) 
An expected treatment effect is defined as any typical treatment side-effect of Renuvion APR System of mild to 
moderate severity and lasting up to a typical maximum duration.  An adverse event is defined as any new medical 
problem, or exacerbation of an existing problem, experienced by a subject while enrolled in the study, whether or 
not it is considered device-related by the investigator.   
 
An adverse event (AE) is any untoward or unfavorable medical occurrence in a human subject, including any 
abnormal sign (for example, abnormal physical exam or laboratory finding), symptom, or disease temporally 
associated with the subject’s participation in the research, whether or not considered related to the subject’s 
participation in the research.  
 
A preexisting condition (one that is present at the start of the study) will be recorded as an AE only if the frequency, 
intensity, or the character of the condition worsens during the study period. Neither the condition, hospitalization, 
prolonged hospitalization, nor surgery are reported as an AE in the following circumstances: hospitalization or 
prolonged hospitalization for diagnostic or elective surgical procedures for a preexisting condition. Surgery should 
not be reported as an outcome of an AE if the purpose of the surgery was elective or diagnostic and the outcome 
was uneventful. 
 
All ETEs and AEs will be collected during the conduct of this trial.   
8.1.2 DEFINITION OF SERIOUS ADVERSE EVENT (SAE) 
Each adverse event should be assessed for its seriousness. The definition below should be used for this assessment. 
Please note that the term serious adverse event is not synonymous with a “severe” adverse event, which may be 
used to describe the intensity of an event experienced by the subject. Please refer to Section 8.2.1 for severity 
definitions. 
 
An adverse event should be classified as serious if it meets any of the following criteria: 
a. Death 
Death was an outcome of the adverse event.  
b. Life-threatening 
The subject was at substantial risk of dying at the time of the adverse event or use or continued use of 
the device. 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 33 of 48 
c. 
Hospitalization (initial or prolonged) 
Admission to the hospital or prolongation of hospitalization was a result of the adverse event. 
d. Disability or Permanent Damage 
The adverse event resulted in a substantial disruption of a person's ability to conduct normal life 
functions, i.e., the adverse event resulted in a significant, persistent or permanent change, impairment, 
damage or disruption in the patient's body function/structure, physical activities and/or quality of life. 
e. Congenital Anomaly/Birth Defect 
Exposure to a medical product prior to conception or during pregnancy may have resulted in an adverse 
outcome in the child. 
f. 
Required Intervention to Prevent Permanent Impairment or Damage (Devices) 
Medical or surgical intervention was necessary to preclude permanent impairment of a body function, 
or prevent permanent damage to a body structure, either situation suspected to be due to the use of 
a medical product. 
g. Other Serious (Important Medical Events) 
The event does not fit the other outcomes, but the event may jeopardize the subject and may require 
medical or surgical intervention (treatment) to prevent one of the other outcomes. 
 
Non-serious adverse events are all events that do not meet the criteria for a “serious” adverse event. 
8.1.3 DEFINITION OF UNANTICIPATED ADVERSE DEVICE EFFECTS (EVENTS) 
An unanticipated adverse device effect is defined as “any serious adverse effect on health or safety, or any life-
threatening problem, or death caused by, or associated with, a device; if that effect, problem, or death was not 
previously identified in nature, severity, or degree of incidence in the investigational plan, or application (including 
supplementary application), or any other unanticipated serious problem associated with a device that relates to the 
rights, safety, or welfare of subjects.” 
8.2 
CLASSIFICATION OF AN EVENT 
8.2.1 SEVERITY OF EVENT 
Each adverse event should be assessed for its severity, or the intensity of an event experienced by the subject, using 
the following classifications: 
 
• 
Mild: easily tolerated by the subject, causing minimal discomfort and not interfering with everyday 
activities. These events generally do not require treatment.  
• 
Moderate: sufficiently discomforting to interfere with normal everyday activities.  These events are 
usually relieved by simple therapeutic measures.  
• 
Severe:  prevents normal, everyday activities.  These events may require systemic drug therapy or other 
medical treatment. 
8.2.2 RELATIONSHIP TO THE CLINICAL STUDY DEVICE 
The relationship to the study device and procedure will be evaluated together and determined by the investigator 
utilizing the following categories: 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 34 of 48 
• 
Not Related: An event for which an alternative explanation is conclusively identified – e.g., concomitant 
drug(s), concomitant disease(s), and/or the relationship in time suggests that a causal relationship is highly 
unlikely. 
• 
Related: The adverse event follows a reasonable temporal sequence related to treatment by the device 
and/or study procedure, follows a known or suspected response pattern and a plausible alternative etiology 
cannot be identified. 
• 
Undetermined: The relation of the adverse event has some temporal relationship to the device and/or 
study procedure, is not clearly due to another condition and the involvement of the study device is 
unknown.  
 
The relationship should be assessed using the categories presented in Table 8.2.2-1. 
TABLE 8.2.2-1. RELATIONSHIP BETWEEN ADVERSE EVENTS AND CLINICAL STUDY DEVICE 
Definite 
Definite relationship exists between the device/procedure and an adverse event 
Probably Related 
A reasonable causal relationship between the device/procedure and an adverse 
event is more likely than not. 
Possibly Related 
A reasonable relationship exists between the device/procedure and an adverse 
event, but the causal relationship is unclear or lacking. 
Not Likely Related 
A temporal relationship exists between the device/procedure and an adverse 
event, but there is no reasonable causal relationship. For example, the adverse 
event occurs in a time frame, which makes a causal relationship to device 
treatment improbable. 
Unrelated 
No relationship between treatment with the device/procedure and the adverse 
event exists. 
 
8.3 
TIME PERIOD AND FREQUENCY FOR EVENT ASSESSMENT AND FOLLOW-UP 
The occurrence of an AE or SAE may come to the attention of study personnel during a study visit or upon review by 
a study monitor. All ETEs and AEs will be captured on the appropriate CRF. Information to be collected includes event 
description, date of onset, clinician’s assessment of seriousness and severity, relationship to study device/treatment 
(assessed only by those with the training and authority to make a determination), actions taken, and date of event 
resolution. All AEs occurring while on study must be documented appropriately regardless of relationship. All 
ETEs/AEs assessed as “not yet resolved” must continue to be followed via telephone contact, email or clinic visit 
every 7 days or sooner as per the physician’s direction until event resolution or stabilization. 
 
A pre-existing condition should not be reported as an adverse event unless there has been a substantial increase in 
severity or frequency of the problem that has not been attributed to natural history. Changes in the severity of an 
event will be documented to allow for a determination if the event should be re-categorized from an ETE to AE.   
Safety evaluations for this study include an interview with the study subject at each follow-up visit by the Investigator 
or delegated study staff to elicit information about any medical occurrence that meets the definition of Adverse 
Event. This information will be documented in CRF without regard for cause or relation to device and/or procedure. 
In addition, study subjects will be instructed in the Informed Consent Form, the site’s standard of care post-
procedure take-home instructions, and verbally by study staff to report all complications experienced post study 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 35 of 48 
procedure to the site personnel as soon as they occur/are observed. Study staff will ensure that monitoring and 
management of all adverse events is prioritized. Subjects may be asked to come into the site at any time to assess 
adverse events.  
Study investigators are provided liberty to mitigate adverse events as deemed necessary per IHC GCP Guidelines 
E6(R2)4.3.2 which states “During and following a subject’s participation in a trial, the investigator/institution should 
ensure that adequate medical care is provided to a subject for any adverse events related to the trial”. 
Adverse event resolution dates will be determined by investigator using either in-person or remote (phone, video 
call, text, email, etc.) examinations or communication with the subject. To ensure the most accurate reporting of 
adverse event durations, investigators are instructed not to wait until scheduled office follow-up visits to assess 
resolution. 
It is the Investigator’s responsibility to determine seriousness, severity, and relatedness of the Adverse Event to the 
device and procedure using the definitions in this protocol. 
The PI will record all reportable events with start dates occurring any time after informed consent is obtained until 
7 (for non-serious AEs) or 30 days (for SAEs) after the last day of study participation. At each study visit, the 
investigator will inquire about the occurrence of ETEs/AEs/SAEs since the last visit. Events will be followed for 
outcome information until resolution or stabilization. 
8.4 
REPORTING PROCEDURES 
8.4.1 ADVERSE EVENT REPORTING 
All Adverse Events (AEs) and Expected Treatment Effects (ETEs) observed by study subjects, investigators, or other 
study staff from first exposure to the study product through last study follow-up visit will be recorded. If a device-
related AE, ETE, SAE, or unanticipated serious device related effect is ongoing at the final study visit, the subject will 
be followed until resolution, until the condition stabilizes, until the event is otherwise explained, or the subject is 
lost to follow-up. The investigator should make every effort to ensure that follow-up includes any supplemental 
investigations as may be indicated to elucidate, as completely as practical, the nature and/or causality of the AE or 
SAE. This may include unscheduled follow-up visits for AE assessment. 
 
Study subjects will be instructed in the ICF, post-treatment take home instructions, and verbally by study staff to 
report all AEs to the clinical study staff.  AE information will be collected throughout the duration of the study and 
recorded on CRFs.                                                                                                                                              
 
Any new medical problem, or an exacerbation of an existing condition, reported from the time the informed consent 
form is signed must be followed until the last study visit after the last study treatment or until event resolution. 
 
8.4.2 SERIOUS ADVERSE EVENT REPORTING 
Serious adverse events must be reported to the Sponsor as soon as possible, preferably within 24 hours but in no 
event later than 72 hours. Any AE considered serious by the PI or Sub-investigator or which meets the definition 
of an SAE included in Definition of Serious Adverse Event must be documented on an SAE CRF. 
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
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The Sponsor will conduct an investigation. If the Sponsor determines that the investigation presents an unreasonable 
risk to subjects, all investigations or parts of the investigation presenting that risk will be terminated as soon as 
possible. The investigator must report serious adverse events to the reviewing IRB according to the IRB regulations. 
 
8.4.3 UNANTICIPATED ADVERSE DEVICE EFFECT REPORTING 
If an unanticipated adverse device effect occurs, the study investigator shall complete the appropriate study-specific 
CRF and submit to the study sponsor and to the reviewing IRB as soon as possible, but in no event later than 10 
working days after the investigator first learns of the effect. The study sponsor contact information is provided in 
Apyx Medical Study Contact List. The study sponsor is responsible for conducting an evaluation of an unanticipated 
adverse device effect and shall report the results of such evaluation to FDA and to all reviewing IRBs and participating 
investigators within 10 working days after the sponsor first receives notice of the effect. Thereafter the sponsor shall 
submit such additional reports concerning the effect as FDA requests. 
8.4.4 REPORTING OF PREGNANCY 
Each pregnancy that starts during the subject’s study participation must be reported by the investigator to the 
Sponsor within 24 hours of learning of its occurrence. Pregnancies and pregnancy follow-up should be reported on 
an Adverse Event form. Pregnancy follow-up should describe the outcome of the pregnancy, including any voluntary 
or spontaneous discontinuation; details of the birth; the presence or absence of any congenital abnormalities, birth 
defects, maternal or newborn complications, and their relation to the device or treatment. Each pregnancy must be 
reported as a non-serious AE if the subject has received at least one study treatment.  The following criteria should 
be followed: 
• 
If a subject becomes pregnant after the Baseline visit and all study treatments have been completed, the 
subject should continue to be followed for the duration of the pregnancy. 
• 
If a subject becomes pregnant after the Baseline visit but before any study treatments, the subject should 
be exited from the study. 
• 
If a subject becomes pregnant after the Baseline visit but before all study treatments have been completed, 
additional study treatments should be discontinued, and the subject should continue to be followed for the 
duration of the pregnancy. 
8.4.5 REPORTING OF DEATHS 
The investigator must notify the Sponsor as soon as possible, preferably within 24 hours but in no event later than 
48 hours, of learning of a subject’s death, regardless of whether the death is related or unrelated to the clinical study 
device. The investigator should attempt to determine, as conclusively as possible, whether the death is related to 
the device. The cause of death and the investigator’s discussion regarding whether or not the death was device-
related should be described in a written report. The investigator mush report death to the reviewing IRB according 
to the IRB regulations at the study site. 
8.5 
STUDY HALTING RULES 
This clinical trial will be halted if subjects’ safety is questioned based on a reporting of severe, device-related AEs at 
an excessive frequency.  The Sponsor and/or investigator may recommend termination or modification of the study 
if there is an occurrence of any device- or treatment-related Serious Adverse Event, using the clinical protocol 
definitions of Serious Adverse Event. In addition, termination or modification may be recommended for any other 
perceived safety concern based on clinical judgment, including but not limited to a severe burn (anticipated or 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 37 of 48 
unanticipated), a higher than anticipated rate for any component of the safety measures, device failures resulting in 
Adverse Events, or unexpected SAEs. The study sponsor will notify all investigators to immediately halt any 
continuing enrollment activities and not enroll any additional study participants.  The study sponsor will inform the 
IRB/FDA of the temporary halt and the disposition of the study. 
 
The Sponsor and/or investigator may recommend termination or modification of the study if there is an occurrence 
of any device- or treatment-related Serious Adverse Event, using the clinical protocol definitions of Serious Adverse 
Event. In addition, termination or modification may be recommended for any other perceived safety concern based 
on clinical judgment, including but not limited to a severe burn (anticipated or unanticipated), a higher than 
anticipated rate for any component of the safety measures, device failures resulting in Adverse Events, or 
unexpected SAEs. Enrollment and treatment would be suspended during root cause investigation to determine the 
cause of the respective AE. 
9. 
CLINICAL MONITORING 
Clinical site monitoring is conducted to ensure that the rights and well-being of human subjects are protected, that 
the reported trial data are accurate, complete, and verifiable, and that the conduct of the trial is in compliance with 
the currently approved protocol/amendment(s), with GCP, and with applicable regulatory requirement(s). A study-
specific Monitoring Plan will further define responsibilities and details related to clinical site monitoring. 
10. STATISTICAL METHODOLOGY 
10.1 STATISTICAL AND ANALYTICAL PLANS 
For the purposes of this post-market study, descriptive statistics will be performed. 
 
10.2 SAMPLE SIZE 
The study will include up to 10 treated subjects from up to three (3) U.S. sites.  
11. SOURCE DOCUMENTS AND ACCESS TO SOURCE DATA/ 
DOCUMENTS 
Source documents are defined as the results of original observations and activities of a clinical investigation. Source 
documents will include, but are not limited to, study-specific CRFs, progress notes, electronic data, computer 
printouts, screening logs, and recorded data from automated instruments. All source documents pertaining to this 
study will be maintained by the investigators and made available for inspection by authorized persons. 
12. QUALITY ASSURANCE AND QUALITY CONTROL 
Quality Assurance and Quality Control procedures will be implemented beginning with the data entry system and 
data QC checks that will be run on the database will be generated. Any missing data or data anomalies will be 
communicated to the site(s) for clarification/resolution via data queries. 
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 38 of 48 
Following written SOPs, the clinical study monitors will verify that the clinical trial is conducted, and data are 
generated, documented (recorded), and reported in compliance with the protocol, GCP, and the applicable 
regulatory requirements. 
 
The investigational site will provide direct access to all trial related sites, source data/documents, and reports for 
the purpose of monitoring and auditing by the sponsor, and inspection by local and regulatory authorities. 
13. ETHICS/PROTECTION OF HUMAN SUBJECTS 
13.1 ETHICAL STANDARD 
This clinical study will be conducted in accordance with the Protection of Human Subjects Regulations, including 
Subpart B Informed Consent of Human Subjects (21 CFR Part 50); the Institutional Review Board Regulations (21 CFR 
Part 56); the Financial Disclosure by Clinical Investigators Regulations (21 CFR Part 54); and the Investigational Device 
Exemptions Regulations (21 CRF Part 812), and the ICH E6. 
13.2 INSTITUTIONAL REVIEW BOARD 
Prior to initiation of any study procedures, the protocol, informed consent, and recruitment materials, and all 
participant materials will be submitted to a duly constituted IRB for view and approval. In addition, any amendments 
to the protocol or Informed Consent Form will be reviewed and approved by the IRB. The Sponsor must receive a 
letter documenting IRB approval at the clinical site prior to the initiation of the study. 
 
The investigator is responsible for providing the appropriate reports to its reviewing IRB during the course of the 
clinical study. These reports will include: 
• 
Informing the IRB of the study progress periodically as required, but at least annually; 
• 
Reporting any unanticipated adverse device effects within 10 working days of first learning of the event; 
• 
Reporting any deviations from the clinical protocol to protect the life or well-being of a subject in the case 
of an emergency within five working days after the emergency occurred; 
• 
Reporting the use of the device without obtaining informed consent from a subject within five working days 
of the event; and  
• 
Providing any other reports requested by the IRB. 
The IRB must be notified of study completion within 30 days of the final visit of the last subject and should be 
provided with a summary of the results of the study by the investigator. 
13.3 PARTICIPANT AND DATA CONFIDENTIALITY 
All information generated in this study must be considered highly confidential and must not be disclosed to any 
persons not directly concerned with the study without prior written permission from the Sponsor. Authorized 
regulatory officials and Sponsor personnel (or its representatives) will be allowed full access to inspect the records. 
Data disclosed outside the study team will be de-identified or will only include general group demographic 
information. Protected Health Information and/or identifiable study data will not be shared with anyone outside the 
study team or Health System, with the exception of the study sponsor, and federal regulators/ institutional officials 
for the purposes of auditing. 
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 39 of 48 
All clinical study devices and/or other materials collected will be used solely in accordance with this protocol, unless 
otherwise agreed to in writing by the Sponsor.  
 
Subjects should be identified only by initials and unique subject numbers on study-specific CRFs. If necessary, their 
full names may be made known to a regulatory agency or other authorized officials. Information to be stored on the 
computer will be identified by subject ID and will be password protected. 
14. DATA HANDLING AND RECORD KEEPING 
14.1 DATA COLLECTION AND MANAGEMENT RESPONSIBILITIES 
Data collection is the responsibility of the clinical trial staff at the site under the supervision of the site PI. The 
investigator is responsible for ensuring the accuracy, completeness, legibility, and timeliness of the data reported.  
 
During each subject’s visit to the clinic, study data will be documented by study personnel on study-specific Case 
Report Forms (CRFs) prior to entry into an Electronic Data Capture (EDC) system. Subject demographic information, 
procedural data, adverse events, device observations, and study required assessments will be documented on the 
CRFs by delegated site personnel.  In addition, study personnel will record progress notes to document all significant 
observations, and any contact with a subject by telephone or other means that provides significant clinical 
information will also be documented in the progress notes as described above. In this clinical trial, study specific 
CRFs may serve as source documents. 
 
For transmission to the Sponsor, information from the study progress notes and other source documents will be 
promptly transcribed to study specific CRF to the EDC with the CRF attached for remote monitoring of the data. 
Transcription of study data onto study specific CRFs and entry into the EDC should be completed within 3 days of 
the study visit. 
 
Copies of the electronic CRF (eCRF) serving as source documents must be maintained for each participant enrolled in 
the study. Data reported in the eCRF derived from source documents should be consistent with the source documents 
or the discrepancies should be explained and captured in a progress note and maintained in the participant’s official 
electronic study record. 
 
Any changes to information in the study progress notes, other source documents, and CRFs will be initialed and 
dated in ink on the day the change is made by a site study staff member authorized to make the change. Changes 
will be made by striking a single line through erroneous data, and clearly entering the correct data. If the reason for 
the change is not apparent, a brief explanation for the change will be written in the source documentation by the 
investigator and/or delegated staff. 
 
Photographic images will be captured utilizing the site’s photography system and images will be taken as typically 
done at the site for private practice patients. Standardized lighting and angles will be utilized. 
 
Data management and oversight is the responsibility of the Sponsor.  Responsibilities include, but are not limited to, 
the following:   
• 
Clinical strategy and oversight. 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 40 of 48 
• 
Clinical study operations. 
• 
File management and study documentation. 
• 
Site initiation visits and study close-out visits. 
• 
Clinical quality assurance. 
• 
Statistical support and programming. 
• 
Data management, including database development and programming and electronic data capture (EDC) 
programming, training, and management. 
• 
Management and oversight of photographic imaging.   
 
Responsibilities may be delegated to applicable vendors. 
14.2 INVESTIGATOR RECORDS AND REPORTS 
14.2.1 INVESTIGATOR RECORDS 
Prior to participation in the investigation, the investigator must provide the following documentation to the Sponsor:  
• 
Investigator Agreement, signed by the investigator, which lists any physicians who will be involved in 
conducting the investigation under the direction of the primary investigator. 
• 
A copy of the principal investigator’s, sub-investigator’s, other delegated study clinicians’ curriculum vitae. 
• 
A letter signed by the chairperson of the IRB overseeing the conduct of this study indicating that the IRB 
has reviewed and approved this investigational plan. 
• 
A copy of the IRB-approved Informed Consent Form. 
During the study, investigators are required to maintain on file the following accurate, complete, and current records 
relating to this study as described in 21 CFR §812.140. A summary of these records is listed below: 
• 
Executed Clinical Trial Agreement. 
• 
Signed Financial Disclosure. 
• 
All correspondence and required reports, which pertain to the study, including IRB approvals and 
correspondence. 
• 
Shipping documents and Device Disposition Log which records of receipt, use, or disposition of study 
devices, including the type and quantity of devices; the dates of receipt; the identifying product numbers; 
the names of all persons who received, used or disposed of each device; and why and how many units of 
the device have been returned to the Sponsor, repaired, or otherwise disposed. 
• 
Records of each subject’s case history and exposure to the device. 
• 
Signed and dated consent forms. 
• 
Relevant observations, including records concerning adverse events, condition of each subject upon 
entering and results of diagnostic tests. 
• 
Study-specific CRFs and corrections to the forms. 
• 
Protocol and amendments with signed Statement of Compliance. 
• 
IRB-approved subject recruiting materials. 
• 
Investigator curriculum vitae and medical license. 
• 
Monitoring reports and correspondence. 
• 
Study logs including: Site Training Log, Site Visit Log, Site Delegation Log, and Subject Enrollment Log. 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 41 of 48 
14.2.2 INVESTIGATOR REPORTS 
Investigators are required to prepare and submit to the Sponsor the following complete, accurate, and timely reports 
on this investigation when are required. These reports, which are listed below, are required by 21 CFR §812.150; 
additional reports may be requested by the Sponsor: 
• 
The investigator will notify the Sponsor of a subject death occurring during the investigation, as soon as 
possible, preferably within 24 hours of learning of the subject’s death, but in no event later than 48 hours. 
The investigator will notify the reviewing IRB of a subject death as specified by the IRB. 
• 
The investigator will notify the Sponsor of any unanticipated adverse device effects within 48 hours after 
learning of the effect. The investigator will notify its reviewing IRB of any unanticipated adverse device 
effects, as soon as possible, but no later than 10 working days after learning of the effect. 
• 
The investigator will notify the Sponsor of the withdrawal of IRB approval, as soon as possible, but no later 
than five working days after learning of the withdrawal. 
• 
The investigator will provide current progress reports to the Sponsor and reviewing IRB at regular intervals 
and at least on an annual basis. 
• 
The investigator will notify the Sponsor and reviewing IRB of any deviation from the investigational plan to 
protect the life and physical well-being of a subject in an emergency, as soon as possible, but no later than 
five working days after the emergency occurred. 
• 
The investigator will notify the Sponsor and reviewing IRB that an informed consent was not obtained from 
a subject, as soon as possible, but no later than five working days after such an occurrence. 
• 
The investigator will provide a final summary report to the Sponsor and reviewing IRB within three months 
after termination or completion of the study. 
• 
The investigator will provide any other information upon the request of an IRB, FDA, or the Sponsor. 
14.3 STUDY RECORDS RETENTION 
The investigator is responsible for retaining the necessary records, including a copy of the protocol, device labeling, 
study-specific CRFs, medical records, original reports of test results, all study-related correspondence, a record of 
written informed consent, and any other documents pertaining to the conduct of this study. 
 
FDA regulations require all investigators participating in clinical device studies to maintain detailed clinical records 
during the investigation and for a period of at least two years after the latter of the following two dates: 
1. The date on which the investigation is terminated or complete; or 
2. The date the records are no longer required for purposes of supporting a premarket approval application. 
The investigator must not dispose of any records relevant to this study without either: 
1. Obtaining written permission from the Sponsor; or 
2. Providing an opportunity for the Sponsor to collect such records. 
The investigator shall take responsibility for maintaining adequate and accurate electronic or hard copy source 
documents of all observations and data generated during this study. Such documentation is subject to inspection by 
the Sponsor and the FDA. 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
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Title: Clinical Trial Protocol 
Revision: 03 
 
Page 42 of 48 
14.4 PROTOCOL DEVIATIONS 
A protocol deviation is an event in which the investigator or site personnel did not conduct the study in accordance 
with the protocol or the Clinical Trial Agreement. This study should be conducted as described in this protocol, except 
for an emergency situation in which the protection, safety, and well-being of a subject requires a protocol deviation, 
based on the judgment of the investigator (or a responsible, appropriately trained professional designated by the 
investigator). If the deviation from the protocol is necessary to protect the physical well-being of a subject in an 
emergency, such protocol deviations must be reported to the Sponsor and the reviewing IRB as soon as possible, 
but no later than five working days after the emergency occurred.  
 
In the event of a significant deviation from the protocol due to an accident or mistake, the investigator or designee 
must contact the Sponsor at the earliest possible time to discuss the deviation and its impact on the study and 
subject continuation in the study. All protocol deviations and justification for the deviation will be documented on 
the applicable Case Report Form. 
14.5 PUBLICATION AND DATA SHARING POLICY 
The data produced by this Apyx Medical‐sponsored study is the sole property of Apyx Medical.  Thereby, 
abstracts, publications and presentations of this data must be pre‐approved by Apyx in writing (e‐mail approval 
is acceptable).  The Sponsor must also be provided with the opportunity to review all investigator‐prepared 
abstracts, publications or presentations.  A period of thirty (30) days for presentational materials and abstracts 
and forty‐five (45) days for manuscripts will be required for review and comment by Sponsor’s Clinical and 
Medical Affairs Department. These requirements acknowledge Sponsor's responsibility to evaluate such 
publications for their accuracy, to ascertain whether Confidential Information is being inappropriately released, 
to provide the Principal Investigator with information which may not yet have been available to him/her, and to 
provide input from co‐authors regarding content and conclusions of the publication or presentation. If requested 
in writing by the Sponsor, the Institution will withhold publication to protect the potential patentability of any 
invention described therein and/or made available to fulfill regulatory requirements. 
 
Notwithstanding the foregoing, Institution agrees that if the Study is part of a multi‐center study, the first 
publication of the results of the Study shall be made in conjunction with the results from the investigators at the 
other study centers as a multi‐center publication. 
 
The sponsor ensures that the study is registered, and study results are disclosed in at least one public clinical study 
registry, in accordance with national/international regulations and other requirements. Study registration may 
include a list of the study sites, as applicable. 
15. STUDY ADMINISTRATION  
15.1 
 STUDY INVESTIGATORS 
Participating Investigators will be qualified based on professionals experienced in facelift surgery, such as plastic or 
cosmetic surgeons. Investigators will be selected based on interest and availability for participation in the study; 
ability to provide qualified subjects; adequate support staff; experience conducting clinical research; and willingness 
to comply with the protocol, IRB requirements, regulatory requirements (including the signed investigator 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
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Title: Clinical Trial Protocol 
Revision: 03 
 
Page 43 of 48 
agreement and statements disclosing any financial relationship investigators might have with Apyx Medical 
Corporation), and applicable regulations. 
15.2 AMENDMENT POLICY 
The investigator will not make any changes to this protocol without prior written consent from the Sponsor and 
subsequent approval by the IRB, except if the deviation from the protocol is necessary to protect the life and physical 
well-being of a subject in an emergency. Such protocol deviations must be reported to the Sponsor and the reviewing 
IRB as soon as possible, but no later than five working days after the emergency occurred. 
 
 Any permanent change to the protocol, whether it is an overall change or a change for specific study center(s), must 
be handled as a protocol amendment. Any amendment to the protocol that appears indicated as the study 
progresses will be fully discussed by the investigator(s) and the Sponsor. If agreement is reached regarding the need 
for an amendment, the Sponsor will write it. The written amendment must be submitted to the chairman of the IRB 
identified with this responsibility. Except for “administrative amendments”, investigators must await IRB approval 
of protocol amendments before implementing the change(s). Administrative amendments are defined to have no 
effect on the validity of the data or information resulting from the completion of the approved protocol, or the 
relationship of likely patient risk to benefit relied upon to approve the protocol; the scientific soundness of the 
investigational plan or protocol; and the right, safety or welfare of the human subjects involved in the investigation. 
When, in judgment of the chairman of the IRB, the investigators and/or the Sponsor, the amendment to the protocol 
substantially alters the study design and/or increases the potential risk to the subject, the currently approved written 
Informed Consent Form will require similar modification. In such cases, repeat informed consent will be obtained 
from subjects enrolled in the study before continued participation. 
 
16. CONFLICT OF INTEREST POLICY 
The independence of this study from any actual or perceived influence is critical. Therefore, any actual conflict of interest of 
persons who have a role in the design, conduct, analysis, publication, or any aspect of this trial will be disclosed and 
managed. Furthermore, persons who have a perceived conflict of interest will be required to have such conflicts managed 
in a way that is appropriate to their participation in the trial. The study leadership has established policies and procedures 
for all study group members to disclose all conflicts of interest and will establish a mechanism for the management of all 
reported dualities of interest. 
 
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 44 of 48 
17. LITERATURE REFERENCES 
1. Feldman LS, Fuchshuber PR, Jones DB. The SAGES Manual on the Fundamental Use of Surgical Energy 
(FUSE).  Springer Science+Business Media, LLC.  2012. 
2. Goldberg SN, Gazelle GS, Halpern EF, Rittman WJ, Mueller PR, Rosenthal DI. Radiofrequency tissue 
ablation: importance of local temperature along the electrode tip exposure in determining lesion shape 
and size.  Acad Radiol. 1996;3:212-8. 
3. Thomsen S. Pathologic analysis of photothermal and photomechanical effects of laser-tissue interactions.  
Photochem Photobiol.  1991;53:825-35. 
4. Ross EV, McKinlay JR, Anderson RR.  Why does carbon dioxide resurfacing work?  A review.  Arch 
Dermatol 1999;135(4):444-454. 
5. Gardner ES, Reinisch L, Stricklin GP, Ellis DL.  In vitro changes in non-facial human skin following CO2 laser 
resurfacing: a comparison study.  Lasers Surg Med 1996;19(4):379-387. 
6. Doshi SN, Alster TS.  Combination radiofrequency and diode laser for treatment of facial rhytides and skin 
laxity.  Cosmet Laser Ther 2005;7:11-15. 
7. Fatemi A, Weiss MA, Weiss RA.  Short-term histologic effects of nonablative resurfacing: results with a 
dynamically cooled millisecond-domain 1320nm Nd:YAG laser.  Dermatol Surg 2002;28(2):172-176. 
8. Mayoral FA.  Skin tightening with a combined unipolar and bipolar radiofrequency device.  J Drugs 
Dermatol 2007;6(2):212-215. 
9. Alster TS, Doshi SN, Hpping SB.  Combination surgical lifting with ablative laser skin resurfacing of facial 
skin: a retrospective analysis.  Dermatol Surg 2004;30(9):1191-1195. 
10. Zelickson B, Kist D, Bernstein E, Brown DB, Ksenzenko S, Burns J, Kilmer S, Mehregan D, Pope K.  
Histological and ultrastructural evaluation of the effects of a radiofrequency-based nonablative dermal 
remodeling device: a pilot study.  Arch Dermatol 2004;140:204-209. 
11. Hsu T, Kaminer M.  The use of nonablative radiofrequency technology to tighten the lower face and neck.  
Semin Cutan Med Surg 2003;22:115-123. 
12. Paul M, Blugerman G, Kreindel M, Muholland RS.  Three-dimensional radiofrequency tissue tightening:  a 
proposed mechanism and applications for body contouring.  Aesthetic Plast Surg.  2011;35(1):87-95. 
13. Hurwitz D, Smith D.  Treatment of overweight patients by radiofrequency-assisted liposuction (RFAL) for 
aesthetic reshaping and skin tightening.  Aesthetic Plast Surg.  2012;36(1):62-71. 
14. Duncan DI.  Nonexcisional Tissue Tightening:  Creating Skin Surface Area Reduction During Abdominal 
Liposuction by Adding Radiofrequency Heating.  Aesthetic Surgery Journal.  2013;33(8):1154-1166. 
15. Ulthera White Paper.  Lower Face, Submentum, and Neck.  Publicly available on www.ultherapy.com by 
Ulthera Inc.  
16. Boeni, R. Safety of Tumescent Liposuction under Local Anesthetsia in a Series of 4,380 Patients. 
Dermatology. 2011;222:278-281. 
17. Nakab L, et al. Improvements in Skin Quality Biological Markers in Skin Explants Using Hyaluronic Acid 
Filler VYC-12L. PRS Global Open, 2020;8:e2723; doi: 10.1097/GOX.0000000000002723; Published online 
25 March 2020.) 
18. van Dongen JA, et al. The Effects of Facial Lipografting on Skin Quality: A Systematic Review. Plast. 
Reconstr. Surg. 144: 784e, 2019. 
19. Narins RS, Brandt F, Leyden J, Lorenc ZP, Rubin M, Smith S. A randomized, double-blind, multicenter 
comparison of the efficacy and tolerability of Restylane versus Zyplast for the correction of nasolabial 
folds. Dermatol Surg. 2003 Jun;29(6):588-95. doi: 10.1046/j.1524-4725.2003.29150.x. PMID: 12786700. 
20. Boroni M, Zonari A, Reis de Oliveira C, Alkatib K, Ochoa Cruz EA, Brace LE, Lott de Carvalho J. Highly 
accurate skin-specific methylome analysis algorithm as a platform to screen and validate therapeutics for 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 45 of 48 
healthy aging. Clin Epigenetics. 2020 Jul 13;12(1):105. doi: 10.1186/s13148-020-00899-1. PMID: 
32660606; PMCID: PMC7359467. 
 
 
 
 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 46 of 48 
APPENDIX A: PATIENT SATISFACTION QUESTIONNAIRE (PSQ)  
Please have the subject complete this assessment while referring to their image in the mirror and current post-
treatment photos compared to baseline photos. Provide the subject with a mirror.  
 
Using a mirror and reviewing your post-treatment photos, compare how your treatment area currently looks 
compared to your pre-treatment photos. 
 
1. Do you notice any improvement in the appearance of your lower face? 
 YES → 
 
 Improved skin dryness/skin feels more hydrated 
 Improved elasticity/pliability 
 Skin quality is improved 
 Skin appears more youthful 
 Improved skin radiance/”glow” 
 Other:  
 
 
 
 
 
 NO 
 
2. How would you characterize your satisfaction with the treatment? 
 Very Satisfied  
 
 Satisfied 
        
 Slightly Satisfied  
 Neither Satisfied nor Dissatisfied 
 
 Slightly Dissatisfied 
 Dissatisfied 
 Very Dissatisfied 
 
3. Would you recommend this treatment to your friends and family members (check one)? 
 YES  
 
 NO 
Thank you for completing this questionnaire. 
Subject Initials: ______________  
Date: _____________________ (DD/MON/YYYY) 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 47 of 48 
APPENDIX B: PROTOCOL REVISIONS LOG 
VERSION 
DATE 
SIGNIFICANT REVISIONS 
1.0 
11 May 2022 
Initial release 
2.0 
13 Sept 2022 
• 
Added ASA Physical Classifications added to inclusion/exclusion 
criteria. 
• 
Study recruitment duration updated to 6 months.  
• 
Added biopsy at D7 for immunochemistry (SOSC3 and iNOS).  
• 
Revised punch biopsy from 3mm to 3-5mm. Added punch biopsy 
risks.  
• 
GAIS for Investigator and Subject added to D45, D90, and D180 
• 
PSQ added to D180.  
• 
Clarified balancing procedure request process and treatment sides 
for Arm B.  
• 
Date and version updated.  
3.0 
03 Apr 2023 
• 
Updated number of sites from 1 to 2 
• 
Addition of new indication language 
• 
Addition of Renuvion procedure video for proper biopsy placement 
4.0 
24 Apr 2023 
• 
Addition of option for the site to use Apyx One generator 
• 
Removal of Garrick Fenton from Internal Responsibilities section 
5.0 
24 Aug 2023 
• 
Updated number of sites from 2 to 3. 
• 
Updated number of subjects from 12 to 10. 
• 
Changed inclusion criteria from full facelift to lower facelift. 
• 
Removed randomization arms.  All subjects are now receiving the 
same treatment (Lower Facelift with Renuvion).  
• 
Updated biopsy location for all patients.  They will be taken from the 
upper preauricular area where no treatment occurs and the lower 
preauricular area by the ear lobule. 
• 
Histology updated to compare untreated skin sections to treated 
sections for all patients.  
• 
Removal of iNOS and SOSC3 analysis. 
• 
Removal of Day 7 biopsy. 
• 
Changed Renuvion APR treatment settings from investigator’s 
standard clinical practice to 4 passes at 80% power and 1.5LPM. 
• 
Added Dr. Lacerna as a Principal Investigator. 
• 
Changed Vice-President, Quality Assurance & Regulatory Affairs 
from Lisa Graney to Terry Sullivan. 
• 
Changed Clinical Affairs personnel from Emily Hughes to Samantha 
Hannon 
6.0 
10.02.2023 
• 
Updated Study Purpose & Brief Study Overview sections to add 
estimate biological skin age using DNA methylation 
• 
 Added Outcome Measure “Change in estimated biological age from 
baseline to D180” 

Apyx Medical Corporation 
 
Protocol Number:  APX-21-04 
Effective Date: March 19, 2024 
Revision No: 7.0 
Title: Histological Evaluation of Human Skin Biopsies to Assess the Effects of Renuvion APR Treatment as an Adjunct Procedure in Facelift 
Surgery 
 
Form-CLA-003-001                                                
 
Title: Clinical Trial Protocol 
Revision: 03 
 
Page 48 of 48 
• 
Added University of Miami Miller School of Medicine Center for 
Genome Technology to Table 1.2-1 
• 
Added section 4.3.4.8 to describe DNA Methylation 
• 
Added Literature Reference 20 
7.0 
03.19.2024 
• 
Remove Dr. Fredrick from table 1.2-1 since he is no longer 
participating on study 
• 
4.3.4.1 elaborate on when to collect biopsy samples 
• 
Updated table 5 to add subject PSQ 
• 
5.3 Add exclusion criteria to exclude Subjects who has had a prior 
facelift, neck lift or Renuvion treatment in the area to be treatment 
• 
Section 7.2 Clarify that a video or photograph can be used to capture 
the location of the biopsies. 
• 
Protocol Synopsis pg 5 & Study Purpose pg 20 correct typos 
• 
Section 7.4.4 updated for grammar errors