Interventional, Monocentric, Double-blind Randomized Category 2b Study Evaluating the Evaluation of the Tolerance of Cyto-selective Difluoroethane-based Cryotherapy in the Treatment of Brown Spots (Solar and Senile Lentigines, Post -Inflammatory Hyperpigmentation (Pih)) on the Face (CS5_10)

The goal of this clinical trial is to compare the 2 different prototype of cytoselectivecryotherapy devices (name of the devices : CRYONOVE) use in brown spots on the face of subject from different ethnicities. The main questions it aims to answer are:

• the tolerance of 2 prototypes of cyto-selective cryotherapy treatments
• the performance of 2 prototypes of cyto-selective cryotherapy treatments Participants will be treated for each spots with a definied prototype during 6 treatment visits.

Researchers will compare the tolerance and performance of the 3 prototypes.

Study Overview

• Status: Completed
• Conditions: Lentigo; Solar Lentigo; Post Inflammatory Hyperpigmentation
• Intervention / Treatment: Device: CRYONOVE (EC14_4osc); Device: CRYONOVE (EC05osc)

• Study Type: Interventional
• Enrollment (Actual): 30
• Phase: Not Applicable

Contacts and Locations

Study Locations

• South Africa
  • Pretoria, South Africa
    • SMU - Photobiology Laboratory, Sefako Makgatho Health Sciences University

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Having signed a written informed consent form (ICF) to participate in the investigation obtained according to ISO 14155:2020 - Good Clinical Practice (GCP);
2. Healthy male and female participants, 18 to 75 years old (inclusive), and Fitzpatrick's skin type (V-VI);
3. Melanin-rich ethnicity skins;
4. Presenting at least two brown spots on the face with ≥ 3 and ≤ 6 mm in diameter;
5. Female of non-childbearing potential, defined as woman without uterus and/or both ovaries, surgically sterile (at least 6 months prior to Screening visit) or post-menopausal (at least one year post cessation of menses);

6. Female of childbearing potential who has been, in the opinion of the Investigator, using an approved method of birth control for at least 1 month prior to Screening visit and agreeing to continue adequate contraception during the entire study period;

   Reliable methods of contraception are:

   • hormonal methods or intrauterine device in use since at least 1 month prior to Screening visit and during the investigation period;
   • bilateral tubal ligation since at least 3 months prior to Screening visit and during the investigation period;
   • barrier methods in use at least 14 days prior to Screening visit;
   • vasectomized partner;
   • sexual abstinence defined as refraining from heterosexual intercourse for at least 3 months prior to Screening visit and during the entire period of risk associated with the study products.
7. Participant who has not been exposed to UV within at least two months prior to the screening visit and agreeing to avoid exposure to UV radiation (tanning beds, phototherapy and sunlight) for the whole study duration. A sun-protection cream will be distributed to the participants to use in case of sun exposure;
8. Having undergone a general clinical examination attesting to his/her ability to participate in the study.
9. Participant able to comprehend the full nature and the purpose of the investigation, including possible risks and side effects, and able to cooperate with the Investigator and to comply with the requirements of the entire investigation (including ability to attend all the planned investigation visits according to the time limits), based on Investigator's judgement;
10. No suspicion of carcinoma after investigation by a dermatologist

Exclusion Criteria:

1. Female participant who is pregnant, parturient or breast feeding;
2. Female participant of childbearing potential having a positive urinary pregnancy test at Day 0;
3. Having performed cosmetic treatments (e.g., exfoliants, scrubs or self-tanners, facial UV) in the month before the start of the study on the face (see restrictions paragraph);
4. Having performed cosmetic or aesthetic treatments by a dermatologist (e.g., laser, IPL, peeling, creams, cryotherapy) in the last 6 months on the face;
5. Receiving systemic or local treatment (e.g., dermocorticoids, corticosteroids, diuretics) likely to interfere with the evaluation of the parameter studied;
6. Person affected by dermatosis, autoimmune disease, systemic, chronic or acute disease, or any other pathology that may interfere with treatment or influence the results of the study (e.g., people with diabetes or circulatory problems, allergic to cold, Raynaud's syndrome);
7. Person with clinically significant skin condition on the tested area (e.g., active eczema, psoriasis, rosacea, scleroderma, acne, dermatitis) or presence on the tested area of skin lesions, scars, tattoos;
8. Concomitant participation in other clinical trials/investigations or participation in the evaluation of any IMD/IP during 2 months before this study;
9. Unable to follow the requirements of the protocol.Vulnerable: whose ability or freedom to give or refuse consent is limited.
10. Major protected by law (tutorship, curatorship, safeguarding justice...).
11. Unable to be contacted urgently over the phone.
12. Unable to communicate or cooperate with the Investigator due to poor mental development, language problems (unable to read and write English language) or impaired cerebral function;
13. Currently participating in another clinical study or being in an exclusion period of another clinical study;

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Double

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: (EC14_4osc); (EC14_4osc) 1 application every week for a total of 6 applications	Device: CRYONOVE (EC14_4osc); The prototype is a variant version from that of a CE marked MD already commercialized (Cryobeauty mains, Cryobeauty Pharma SAS, France) which produces a cryogenic spray sequence (EC14). The prototype is intended to treat pigmented spots of the face (PIH spots and senile and solar lentigos).
Experimental: (EC-05_1osc); (EC-05_1osc) 1 application every two weeks for a total of 6 applications	Device: CRYONOVE (EC05osc); The prototype is a variant version from that of a CE marked MD already commercialized (Cryobeauty mains, Cryobeauty Pharma SAS, France) which produces a cryogenic spray sequence (EC05). The prototype is intended to treat pigmented spots of the face (PIH spots and senile and solar lentigos).

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Tolerance	Evaluate the evolution of the scores given by the dermatologist or the participant on the following items : Hyperpigmentation (IGA scale)* Hypopigmentation Erythema, oedema, micro-bruise, hematoma, dryness, desquamation, fissures / cracks, roughness, crust Skin sensation (tightness, stinging, itching, warm and burning sensations) Day 0: Pain after each treatment (5 min. rest between two treatments) Other unexpected events *: IGA Scale : Investigator's Global Assessment - Scale in 6 points (0 to 5) 0 = clear of hyperpigmentation; = almost clear of hyperpigmentation; = mild, but noticeable hyperpigmentation; = moderate hyperpigmentation (medium brown in quality); = severe hyperpigmentation (dark brown in quality); = very severe hyperpigmentation (very dark brown, almost black in quality)	[Time Frame: Day 7, Day 14, Day 21, Day 28, Day 35, Day 42, Day 56, Day 70]

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Performance (Acquisitions C-cube)	--> Performance assesment : • Standardized photographs will be taken before the treatment at each visit (C-Cube acquisition without analysis) - illustration only	[Time Frame: Day 7, Day 14, Day 21, Day 28, Day 35, Day 42, Day 56, Day 70]

Collaborators and Investigators

• Sponsor: Cryonove Pharma
• Collaborators: Dermatech
• Investigators: Study Chair: Victoria DAUPHANT, Dermatech

Study record dates

Study Major Dates

• Study Start (Actual): September 16, 2024
• Primary Completion (Actual): December 12, 2024
• Study Completion (Actual): December 12, 2024

Study Registration Dates

• First Submitted: April 2, 2024
• First Submitted That Met QC Criteria: April 8, 2024
• First Posted (Actual): April 11, 2024

Study Record Updates

• Last Update Posted (Actual): March 25, 2025
• Last Update Submitted That Met QC Criteria: December 20, 2024
• Last Verified: December 1, 2024

More Information

Terms related to this study

• Keywords: cryotherapy; brown spots
• Additional Relevant MeSH Terms: Skin Diseases; Pigmentation Disorders; Melanosis; Lentigo; Hyperpigmentation
• Other Study ID Numbers: CS5_10

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No