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Cord blood stem cells injected into stroke patients: a first step

NCT ID NCT04434768

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This early-phase trial tests whether stem cells from donated umbilical cords are safe for people who recently had a stroke. Ten participants receive the cells through a vein or directly into the brain's arteries. Researchers monitor for side effects and look for any signs of improvement in brain function over 12 months.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
umbilical cord mesenchymal stem cells (UMSC01)
What this could lead to
If this early trial shows safety and hints of benefit, it could point toward a new way to help stroke patients recover brain function.
What could go wrong
This is a very small, first-in-human study with only 10 participants. The dual injection method has never been tested in people, so unknown risks exist. Success is far from guaranteed.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

10 people

The number who actually took part.

Started

Dec 2020

Expected to finish

Feb 2026

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

20 to 80 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Donor-Inclusion Criteria: 1. Pregnant women who are aged ≥ 20, \<50 years old on the date of consent. 2. Pregnant women who are willing to and has given her signed written informed consent. 3. Pregnant women whose gestation age ≥ 34 weeks and have intact placenta. 4. Pregnant women who have not had any complication of pregnancy. 5. Pregnant women who are willing to provide a personal and family medical history (as much available) of herself and the biologic father (as much available), prior to or following collection of the umbilical cord. Donor-Exclusion Criteria: 1. Pregnant women who have clinically severe and/or life threatening disease(s) such as uncontrolled diabetes mellitus (fasting sugar level \> 250 mg/dL) and malignant tumor. 2. Pregnant women who have been tested positive for the following tests within 7 days before or after umbilical cord acquirement: * Human immunodeficiency virus-1 (HIV-I): anti- HIV-I and nucleic acid test (NAT) * HIV-II * Hepatitis B virus (HBV): Hepatitis B surface antigen (HBsAg), anti- Hepatitis B core (HBc) and NAT * Hepatitis C virus (HCV): anti-HCV and NAT * Cytomegalovirus (CMV) * Treponema pallidum * Chlamydia trachomatis * Neisseria gonorrhea * Human T cell leukemia virus-I/II (HTLV-I/II) * West Nile virus (WNV) NAT 3. Pregnant women are with increased risk for Creutzfeldt-Jakob disease (CJD) if you have received a non-synthetic dura mater transplant, human pituitary-derived growth hormone, or have one or more blood relatives diagnosed with CJD. 4. Pregnant women had spent three months or more cumulatively in the United Kingdom (U.K) from the beginning of 1980 through the end of 1996; or had received any transfusion of blood or blood components in the U.K. or France between 1980 and the present; or lived 5 years or more cumulatively in Europe. 5. Pregnant women or her sexual partners were born or lived in certain countries in Africa (Cameroon, Central African Republic, Chad, Congo, Equatorial Guinea, Gabon, Niger, or Nigeria) after 1977 (risk factor for HIV group O). 6. Pregnant women who have medical diagnosis of Zika virus (ZIKV) infection or residence in, or travel to, an area with active ZIKV transmission (according to the list from Centers for Disease Control and Prevention. Zika Virus: Areas with Zika) at any point during that pregnancy. 7. Pregnant women who have sex at any point during that pregnancy with a male who is known to medical diagnosis of ZIKV infection or residence in, or travel to, an area with active ZIKV transmission. 8. Pregnant women who have received blood infusion or stayed for more than 3 months in WNV potential countries. 9. Pregnant women who have unexplained post-donation febrile illness with headache or other symptoms suggestive of WNV infection (i.e., flu-like symptoms that include fever with headache, eye pain, body aches, generalized weakness, new skin rash or swollen lymph nodes or other evidence of WNV infection) within two weeks. 10. Pregnant women who have medical history of tuberculosis. 11. Pregnant women who have medical history of malignant tumor. 12. Fetuses that have found with genetic disease in prenatal checkups. 13. Pregnant women who would like to store cord blood or umbilical cord cells, other than this study usage. 14. Pregnant women who are not suitable to donate as judged by the Investigator(s). Subject-Inclusion Criteria: 1. Male or female who are age ≥ 20, ≤80 years old on date of consent. 2. Patients who have had a recent (onset within the past 36 hours) acute ischemic stroke in the unilateral middle cerebral artery (MCA) distribution (M1 and M2). The location of ischemic stroke should be diagnosed by magnetic resonance image (MRI). 3. Patients who have National Institutes of Health Stroke Scale (NIHSS) score of 8 to 17 with both motor arm and motor leg scores ≥ 3 (MRC scale). 4. Patients who have Glasgow Coma Scale (GCS) score of \> 8 on the date of consent. 5. Patients who have modified Rankin Scale (mRS) of 2\~4 on the date of consent and their mRS prior to stroke onset should be 0 or 1 (either by self-reported history or by family/caregiver report). 6. Patients who have stable vital signs for at least 24 hours, defined as normal respiration, afebrile and mean arterial pressure ≤ 180 mmHg. 7. Patient's random blood sugar \<350 mg/dl and \> 50 mg/dl and normal urea/ electrolytes. 8. Patient has appropriated blood clotting function as assessed by the following laboratory requirements: PT, APTT ≤ 1.5X upper limit of normal (ULN). 9. Patients are willing to sign informed consent or assent by the next of kin. 10. All male patients and female patients with child-bearing potential (between puberty and 2 years after menopause) should use appropriate contraception method(s) shown below, for at least 4 weeks after UMSC01 treatment. 1. Total abstinence (when this is in line with the preferred and usual lifestyle of the subject. Periodic abstinence (e.g., calendar, ovulation, symptothermal, post-ovulation methods) and withdrawal are not acceptable methods of contraception). 2. Female sterilization (have had surgical bilateral oophorectomy with or without hysterectomy) or tubal ligation at least six weeks before taking study treatment. In case of oophorectomy alone, only when the reproductive status of the woman has been confirmed by follow up hormone level assessment. 3. Male sterilization (at least 6 months prior to screening). For female subjects on the study, the vasectomized male partner should be the sole partner for that subject. 4. Combination of any two of the following listed methods: (d.1+d.2 or d.1+d.3, or d.2+d.3) * d.1 Use of oral, injected or implanted hormonal methods of contraception or other forms of hormonal contraception that have comparable efficacy (failure rate \<1%), for example hormone vaginal ring or transdermal hormone contraception. * d.2 Placement of an intrauterine device (IUD) or intrauterine system (IUS). * d.3 Barrier methods of contraception: Condom or Occlusive cap (diaphragm or cervical/vault caps) with Spermicidal foam/gel/film/cream/vaginal suppository. Subject-Exclusion Criteria: 1. Patients with recurring stroke attack within 6 months before this current stroke episode. 2. Patients with signs of midline shift, hemorrhagic transformation or fluctuation of symptoms. 3. Patients who have participated in other investigational studies and received any treatment within 4 weeks prior to receiving UMSC01. 4. Patients who have immuno-compromised condition,or are with known clinically significantly autoimmune conditions or are receiving immunosuppressive treatments. 5. Patients who are unable to undergo brain Single-photo Emission Computed Tomography (SPECT), CT, MRI and PET scans for any reason. 6. Patients with inadequate hepatic and renal function after onset of acute ischemic stroke: Aspartate aminotransferase (AST) and Alanine aminotransferase (ALT) ≥ 5 x upper limit of normal (ULN); estimated glomerular filtration rate (eGFR) \< 30 mL/min at screening. 7. Patients who have medical history of malignant tumor, spinal injury or other clinically significant neurological diseases that will confound the evaluation of this study. 8. Patients who have clinically active peripheral nephropathy, myopathy or other clinically significant neurological diseases that will confound the evaluation of this study. 9. Patients who have a difference in NIHSS score ≥ 5 between the time beginning hospitalization and investigational product (IP) treatment. 10. Patients who are diagnosed of heart failure with a New York Heart Association (NYHA) score of III or IV. 11. Patients not suitable to participate the trial as judged by the investigator(s).

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • China Medical University Hospital

    Taichung, Non-US, 404, Taiwan

More trials for these conditions

Other studies related to the condition(s) this trial covers.