About this trial
The goal of this clinical trial is to learn if local scalp injection of human umbilical cord mesenchymal stem cell-derived exosomes (hUCMSC-Exos) can treat androgenetic alopecia (AGA) in male patients with AGA.
The main question it aims to answer is:
Does hUCMSC-Exos injection improve hair regrowth compared with placebo?
Researchers will compare hUCMSC-Exos injection to placebo injection to see if hUCMSC-Exos leads to superior efficacy in hair follicle regeneration, as measured by changes in hair density, hair thickness, and patient-reported outcomes.
Participants will:
Receive randomized, double-blinded local scalp injections of either hUCMSC-Exos or placebo
Attend scheduled follow-up visits for hair assessment and safety monitoring
Undergo photography, trichoscopy, and complete quality-of-life or psychosocial burden questionnaires as applicable
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Male subjects aged 18 to 55 years;
Diagnosis of androgenetic alopecia classified as Norwood-Hamilton grade III-V;
Stable pattern of hair loss for at least 6 months prior to screening;
Willingness to refrain from using any other hair loss treatments during the study period and for 6 months after completion of treatment.
Disqualifiers
Other types of alopecia, including alopecia areata, cicatricial alopecia, or telogen effluvium;
Use of minoxidil, finasteride, spironolactone, or other hair growth-related medications within 1 year prior to screening;
Receipt of platelet-rich plasma (PRP), laser cap therapy, or other scalp procedures within 6 months prior to screening;
History of autoimmune disease, active scalp infection, coagulation disorders, or malignancy;
Trial design
Parallel
Treatments tested in this trial
Human Umbilical Cord Mesenchymal Stem Cell-Derived Exosomes
DrugSterile exosome suspension derived from human umbilical cord mesenchymal stem cells (hUCMSC-Exos). Administered via intradermal scalp injection at 0.05 mL per point, 1 cm spacing, approximately 4 mm depth. Treatment repeated once every 4 weeks for a total of 3 sessions.
Normal Saline (0.9% NaCl)
Other interventionSterile 0.9% normal saline injection. Administered via intradermal scalp injection using the same protocol as the experimental group: 0.05 mL per point, 1 cm spacing, approximately 4 mm depth, once every 4 weeks for a total of 3 sessions.
Treatment groups
Trial outcomes
Primary outcomes
Change in Hair Density From Baseline to Week 24
Hair density (hairs/cm²) within a predefined target scalp area will be assessed using digital trichoscopy.
Change in Modified Global Photographic Assessment (MGPA) Score From Baseline to Week 24
Global scalp photographs will be evaluated by blinded investigators using the Modified Global Photographic Assessment (MGPA) scale to assess overall improvement in hair growth.
Secondary outcomes
Change in Hair Density From Baseline to Week 12
Hair density changes within the predefined target area measured by digital trichoscopy.
Change in Modified Global Photographic Assessment (MGPA) Score From Baseline to Week 12
Assessment of global hair growth improvement using standardized photography and MGPA scoring.
Change in Dermatology Life Quality Index (DLQI) Score From Baseline to Week 24
Evaluation of treatment-related quality of life improvement using the Dermatology Life Quality Index questionnaire.
Change in Mean Hair Shaft Diameter From Baseline to Week 24
Mean hair shaft diameter will be measured using digital trichoscopic analysis.
Sponsors and contacts
Click on the lead sponsor to view all of their trials.
Zhang Han
Lead sponsor
Chinese PLA General Hospital
Sponsor institution