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CTRI Number  CTRI/2025/05/087315 [Registered on: 21/05/2025] Trial Registered Prospectively
Last Modified On: 20/05/2025
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Drug
Other (Specify) [YTO-459 IN SUBJECTS WITH AGEING SIGNS]  
Study Design  Non-randomized, Multiple Arm Trial 
Public Title of Study   A Study to Check the Safety and Benefits of YTO-459 in People Showing Signs of Ageing (like wrinkles or tired-looking skin) 
Scientific Title of Study   An Open-Labelled, Multi-Arm, Single-Center Clinical Study to Evaluate the Safety and Efficacy of YTO-459 in Subjects with Ageing Signs. 
Trial Acronym  Nil 
Secondary IDs if Any  
Secondary ID  Identifier 
CTSRS/2430 Version No. 1.0 Dated 14/Mar/2025  Protocol Number 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Uday Kumar S 
Designation  Principal Investigator 
Affiliation  Currex Hospital 
Address  No.55-56, Seegehalli Main Road, Bhoo Samartha Layout,

Bangalore
KARNATAKA
560059
India 
Phone  06364898825  
Fax    
Email  drudaykumar.derma@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Ms Sathyavathi L M 
Designation  HOD-Clinical Operations 
Affiliation  Samahitha Research Solutions 
Address  Clinical Research Unit No.1204, Ashva, 2nd Floor, 26th Main, Jayanagar 9th Block, Bangalore

Bangalore
KARNATAKA
560069
India 
Phone  09739001749  
Fax    
Email  satyalm@samahitha.com  
 
Details of Contact Person
Public Query
 
Name  Ms Arpita Malgi 
Designation  Team Lead - Clinical Operations 
Affiliation  Samahitha Research Solutions 
Address  Clinical Research Unit No.1204, Ashva, 2nd Floor, 26th Main,Jayanagar 9th Block, Bangalore

Bangalore
KARNATAKA
560069
India 
Phone  06364898825  
Fax    
Email  arpita@samahitha.com  
 
Source of Monetary or Material Support  
Yuvan Research Inc, 319 N Bernardo Ave Mountain View, CA 94043 USA  
 
Primary Sponsor  
Name  Yuvan Research Inc 
Address  319 N Bernardo Ave Mountain View, CA 94043 USA  
Type of Sponsor  Pharmaceutical industry-Global 
 
Details of Secondary Sponsor  
Name  Address 
NIL  Nil 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Uday Kumar S  Currex Hospital  Currex Hospital No.55-56, Seegehalli Main Road, Bhoo Samartha Layout, Seegehalli, KS Halli, Bengaluru
Bangalore
KARNATAKA 
06364898825

drudaykumar.derma@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Pranav Diabetes Center Ethics Committee   Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: L988||Other specified disorders of the skin and subcutaneous tissue,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Arm-A : YTO-459 (without microdermabrasion)  Application of YTO-459 on the back of the hand (without microdermabrasion). 
Intervention  Arm-B : YTO-459 with Microdermabrasion  Application of YTO-459 on the back of the hand after microdermabrasion technique. 
Comparator Agent  Arm-C : YTO-459A  Application of YTO-459A (second version with added excipients) on the back of the hand (without microdermabrasion). 
Comparator Agent  Arm-D : YTO-459A with Microdermabrasion  Application of YTO-459A on the back of the hand after microdermabrasion technique. 
 
Inclusion Criteria  
Age From  55.00 Year(s)
Age To  80.00 Year(s)
Gender  Both 
Details  1. Adults of both sexes aged 55 years and above

2. Subjects with fine lines or wrinkles graded as Grade 1 or higher on the Allergan Fine Lines Scale

3. Subjects with mild to moderate crow’s feet wrinkles graded as 3 or above on the Modified Anti-Ageing Atlas 6-point scale

4. Subjects willing to participate in the study by providing signed informed consent 
 
ExclusionCriteria 
Details  1. Refusal or inability to give informed consent to participate in the study

2. Subjects who have undergone any dermatological or surgical procedure of the hand

3. Subjects who are currently using or have used anti-aging anti-wrinkle Alpha hydroxy acids or retinol-based cosmetics in the past 3 months

4. Participation in or administration of any clinical trials or investigational drugs within 30 days prior to the screening visit

5. History of known bleeding disorders

6. Any relevant or clinically significant condition that may interfere with efficacy or safety assessments during the study drug administration

7. History of drug or alcohol abuse or addiction within the past 5 years

8. Persons under guardianship or those incapable of judgment 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   On-site computer system 
Blinding/Masking   Open Label 
Primary Outcome  
Outcome  TimePoints 
1. To measure the change in the skin after the study treatment using photometric analysis at the end of the study visit compared to the baseline visit between the treatment groups

2. To measure the change in class of wrinkle after the study treatment according to MFW Scale at the end of the study visit compared to the baseline visit between the treatment groups 
Day 1, Day 2, Day 3, Day 4, Day 5, Day 8, Day 9, Day 10, Day 11, Day 12, Day 15 and Day 23 
 
Secondary Outcome  
Outcome  TimePoints 
1. To measure the reduction of fine lines in the skin after the study treatment using Allergan Fine Lines Scale at the end of the study visit compared to the baseline visit between the treatment groups

2. To measure subject satisfaction after the study treatment using the subject satisfaction questionnaire at the end of the study visit compared to the baseline visit between the treatment groups

3. To measure improvement in the natural look and feel of the skin using Global Aesthetic Improvement Scale GAIS at the end of the study visit compared to the baseline visit between the treatment groups

4. To measure the proportion of participants with treatment emergent adverse events TEAEs leading to study treatment discontinuation between the treatment groups

5. To compare the rate of adverse events between the treatment groups 
Day 1, Day 2, Day 3, Day 4, Day 5, Day 8, Day 9, Day 10, Day 11, Day 12, Day 15 and Day 23 
 
Target Sample Size   Total Sample Size="20"
Sample Size from India="20" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   Phase 1 
Date of First Enrollment (India)   01/06/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="0"
Months="0"
Days="23" 
Recruitment Status of Trial (Global)   Not Yet Recruiting 
Recruitment Status of Trial (India)  Open to Recruitment 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary  

Introduction and Background

Ageing of the skin is a multifactorial biological process influenced by both intrinsic (natural ageing) and extrinsic (environmental) factors, especially prolonged exposure to ultraviolet radiation. This leads to structural and functional deterioration of skin components, including collagen and elastin. Collagen accounts for 70–80% of the skin’s dry weight and is responsible for mechanical strength, while elastin, though comprising only 2–4% of the dermal matrix, plays a vital role in skin elasticity.

Photoaging, caused by UV exposure, results in the breakdown and disorganization of elastin fibers, leading to a condition known as solar elastosis—characterized by dense, dysfunctional elastotic material in the dermis.

Recent advancements have highlighted the regenerative potential of adipose tissue, particularly through fat grafting and the use of mesenchymal stem cells (MSCs) found in the stromal vascular fraction (SVF). MSCs are multipotent cells capable of self-renewal and differentiation, and are now being explored for skin rejuvenation.

Platelet-rich plasma (PRP) has also gained attention for its ability to promote tissue regeneration through growth factors and cytokines. PRP has been used in a wide range of dermatological and cosmetic treatments, including for wrinkles, scars, and wound healing.

Building upon these regenerative approaches, a preclinical study demonstrated that plasma-derived exosomes—specifically E5, a proprietary horse blood plasma-derived exosome—may significantly improve cellular rejuvenation and metabolic function in animal models.

Purpose of the Study

The present clinical study aims to evaluate the safety and efficacy of YTO-459, a novel formulation containing horse plasma-derived exosomes, in individuals with visible signs of skin ageing such as fine lines and wrinkles. This study seeks to establish whether the regenerative properties observed in preclinical models translate into clinical benefits in human subjects, potentially offering a new non-invasive solution for age-related skin concerns.

 
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