Clinical Study 4: Aging Types Based on Longevity-Related Gene Expression Analysis
Clinical Study 5: Adipose-Derived Stem Cell Therapy for Various Diseases
Clinical Study 6: Intranasal Exosome Administration in Middle-Aged and Older Adults
Clinical Study 7: Collection, Storage, and Use of Biological Samples in Anti-Aging Research
Clinical Study 8: Urine-Derived Stem Cells (USCs and uMSCs)
Clinical Study 9: Peripheral Blood-Derived Immune Cells
Clinical Study 10: Culture Supernatant and Exosomes for Unexplained Symptoms
Clinical Study 11: Culture Supernatants in Aesthetic Dermatology
Common Information for All Studies
Publication Date: October 2, 2026
Tokyo Relife Clinic conducts the following research studies with the approval of the Tokyo Relife Clinic Ethics Review Committee, in accordance with Japan's "Ethical Guidelines for Life Science and Medical Research Involving Human Subjects."
For studies where consent is marked as "opt-out," we may use standard medical records and leftover samples from regular patient visits. We will not perform any extra tests or treatments for this research. Instead of asking each patient for signed consent, we share the research details on this page.
If patients do not want their data or samples used for research, please contact us using the form or details at the bottom of this page. No reason is required, and declining will not affect regular medical care.
Clinical Study 4: Aging Types Based on Longevity-Related Gene Expression Analysis
Approval Number & Date | TRC-004-01-c |
|---|---|
Consent Method | Written consent required |
Study Purpose | This study analyzes aging-related gene expression and DNA methylation to classify aging into specific types (such as inflammation, oxidative stress, low metabolic function, and low immune function). The goal is to create a model to evaluate preventive treatments. |
Eligible | Adults aged 18 and older who received an explanation of the study and gave written consent. This includes patients requesting self-pay testing at Tokyo Relife Clinic and healthy volunteers. |
Information to Be Used | • Blood (including peripheral blood mononuclear cells) |
Principal Investigator | Yoshiyasu Shinohara, MD, PhD (or Title) |
Research Period | October 1, 2026 – September 30, 2031 |
Provision to External Institutions | None |
Clinical Study 5: Retrospective Observational Study on the Efficacy and Safety of Adipose-Derived Stem Cell Therapy for Various Diseases
Approval Number & Date | TRC-005-01-a |
|---|---|
Consent Method | Opt-out |
Study Purpose | This study reviews medical records of patients who received adipose-derived stem cell therapy at Tokyo Relife Clinic. The goal is to evaluate treatment safety and how symptoms changed before and after treatment for different medical conditions. |
Eligible | Patients aged 40 to 69 who received adipose-derived stem cell therapy at Tokyo Relife Clinic between January and October 2025, and experienced any of the following: |
Information to Be Used | • Age, current medical conditions, and past medical history, treatment and medication details, Symptom evaluation scores, blood test results (routine tests, hormones, oxidative stress markers, etc.), urine test results (routine urinalysis and urinary indole tests), AGEs test results, physical measurements (grip strength and body composition), side effects and adverse events |
Principal Investigator | Yoshiyasu Shinohara (Head of Research Division) |
Research Period | October 1, 2026 – September 30, 2031 |
Provision to External Institutions | None |
Clinical Study 6: Changes in Cognitive Function, Immune Aging, and Muscle Strength After Intranasal Exosome Administration in Middle-Aged and Older Adults
Approval Number & Date | TRC-006-02-b (February 5, 2026) |
|---|---|
Consent Method | • Prospective study: Written consent required |
Study Purpose | This study evaluates the safety of iPSC-derived exosomes given through intranasal administration. It also looks at changes in cognition, immune aging markers, and muscle strength in people who received this treatment. |
Eligible | • Prospective study: Adults aged 50 to 80 who received an explanation of the study and gave written consent. |
Information to Be Used | • Age, biological sex, medical history, and current/past medications |
Principal Investigator | Maki Nakao (General Director) |
Research Period | October 1, 2026 – September 30, 2031 |
Provision to External Institutions | Some sample analyses were previously outsourced to partner testing laboratories in Japan and overseas (including Kenko Life Science Inc. and RayBiotech, Inc. [USA]). No additional samples or personal data will be sent to external institutions for this study. |
Clinical Study 7: Collection, Storage, and Use of Biological Samples (Blood, Urine, and Adipose-Derived Stem Cells) in Anti-Aging Research
Approval Number & Date | TRC-007-01-c (September 3, 2026) |
|---|---|
Consent Method | • New samples: Written consent required |
Study Purpose | This study investigates how aging works, focusing on how aging in adipose-derived stem cells relates to age-related conditions. The goal is to help develop new ways to diagnose, prevent, and treat aging. |
Eligible | • New samples: Individuals who agree to provide blood, urine, or adipose-derived stem cells for research and give written consent. |
Information to Be Used | • The biological samples listed above |
Principal Investigator | Yoshiyasu Shinohara (Head of Research Division) |
Research Period | From Ethics Review Committee approval date to March 31, 2036 |
Provision to External Institutions | Samples and data may be shared with universities, research institutes, medical centers, and companies in Japan. |
Clinical Study 8: Validation of Collection Protocols, Quality Standards, and Biological Characteristics of Urine-Derived Stem Cells (USCs and uMSCs)
Approval Number & Date | TRC-008-01-c (September 3, 2026) |
|---|---|
Consent Method | Written consent required |
Study Purpose | This study tests how reliably stem cells can be collected from urine. The goal is to set quality standards for these cells and better understand their biological characteristics. |
Eligible | Healthy adult volunteers aged 20 to 64 who received an explanation of the study and gave written consent. |
Information to Be Used | • Urine samples (collected by the participant, usually three times) |
Principal Investigator | Yoshiyasu Shinohara (Head of Research Division) |
Research Period | From Ethics Review Committee approval date to March 31, 2036 |
Provision to External Institutions | Samples and personal data will not be shared with outside institutions. Some specialized tests that cannot be done at Tokyo Relife Clinic may be outsourced to partner laboratories. In these cases, names and any identifying information will never be shared with contractors. |
Clinical Study 9: Isolation, Culture Processing, and Quality Assessment of Peripheral Blood-Derived Immune Cells
Approval Number & Date | TRC-009-01-c (September 3, 2026) |
|---|---|
Consent Method | Written consent required |
Study Purpose | This study evaluates the laboratory methods used at Tokyo Relife Clinic to separate and grow immune cells from blood, as well as the standards used to check their quality. |
Eligible | • Adults aged 20 and older who received an explanation of the study and gave written consent |
Information to Be Used | • Blood samples (collected specifically for research from healthy volunteers; leftover blood from regular cell processing used for therapy patients) |
Principal Investigator | Yoshiyasu Shinohara (Head of Research Division) |
Research Period | From Ethics Review Committee approval date to March 31, 2036 |
Provision to External Institutions | Samples and personal data will not be shared with outside institutions. Some specialized tests that cannot be done at Tokyo Relife Clinic may be outsourced to partner laboratories. In these cases, names and any identifying information will never be shared with contractors. |
Clinical Study 10: Efficacy and Safety of Umbilical Cord-Derived Stem Cell Culture Supernatant and Exosomes for Unexplained Symptoms
Approval Number & Date | TRC-010-01-a (September 3, 2026) |
|---|---|
Consent Method | Opt-out |
Study Purpose | This study reviews medical records of patients who received intravenous (IV) stem cell culture supernatant or exosomes. The goal is to evaluate and compare the safety and effectiveness of each treatment. |
Eligible | Patients aged 30 to 75 who experienced unexplained symptoms for at least one year and received IV stem cell culture supernatant or exosomes during regular care at Tokyo Relife Clinic between April 1, 2024, and September 30, 2025. |
Information to Be Used | • Basic profile: Biological sex, age, height, weight, medical history, existing conditions, and current/past treatments and medications |
Principal Investigator | Principal Investigator: |
Research Period | October 1, 2026 – September 30, 2031 |
Provision to External Institutions | None |
Clinical Study 11: Efficacy and Safety of Different Stem Cell Culture Supernatants in Aesthetic Dermatology (Three-Group Comparison)
Approval Number & Date | TRC-011-01-b (September 3, 2026) |
|---|---|
Consent Method | Opt-out |
Study Purpose | This study compares the safety and cosmetic results of three anti-aging facial treatments: adipose-derived culture supernatant, umbilical cord-derived culture supernatant, and skin-booster (water-light) injections using hyaluronic acid. |
Eligible | Women aged 40 to 69 who received any of the treatments listed above for facial aesthetic care at Tokyo Relife Clinic between April 2024 and October 2025. |
Information to Be Used | • Patient background information |
Principal Investigator | Yoshiyasu Shinohara (Head of Research Division) |
Research Period | October 1, 2026 – September 30, 2031 |
Provision to External Institutions | None |
Common Information for All Studies
Research Institution | TOKYO RELIFE CLINIC |
|---|---|
Protection of Personal Information | All samples and data are assigned anonymous research ID codes. Direct identifying information, such as names and addresses, will never be included in the research dataset. |
Publication of Research Results | Study results will be presented at medical conferences and published in scientific journals. No personal information that could identify any individual will ever be published. |
Request to Stop Use of Data or Samples (Opt-Out) | Requests to opt out may be made by the patient or by an authorized family member or legal representative. |
Review of Research Protocols | Research protocols and study materials can be reviewed upon request, as long as the review does not violate anyone's personal privacy or disrupt the progress of the study. |
Contact Information | Research Office, TOKYO RELIFE CLINIC |
The contents of this page are updated as needed, including whenever study details or approvals are revised.


