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Not yet recruitingNCT06925607Updated Apr 13, 2025

Evaluate the Distribution and Dynamic Behavior of Nuclide Labeled TH-SC01 Cells in Vivo in Patients With Radiation Proctitis

A Phase 1 interventional study of Mesenchymal Stem Cells (MSCs) in Radiation Proctitis, sponsored by Jiangsu Topcel-KH Pharmaceutical Co., Ltd.. Not yet recruiting. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2025-04-13.

Sponsored by Jiangsu Topcel-KH Pharmaceutical Co., Ltd. · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Mar 2026, 8 months ago, but the record still lists the study as not yet recruiting.
Phase
Phase 1
Study type
Interventional
Enrollment
6
Allocation
Randomized
Ages
18 Years to 80 Years
Sex
All
01

Study summary

A Phase l clinical study evaluating the distribution and dynamic behavior of Nuclide labeled TH-SC01 cells in vivo in patients with Radiation proctitis

02

Conditions studied

  • Radiation Proctitis

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03

In context

Proctitis

27 studies on the registry are indexed under Proctitis; 6 are open to participants now.

This study's planned enrollment of 6 is below the median of 122 across 23 interventional studies indexed under Proctitis.

Browse Proctitis studies →

Lead sponsor

Jiangsu Topcel-KH Pharmaceutical Co., Ltd. is the lead sponsor of 9 studies on the registry; 7 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Signed
  2. Good physical condition ( score 0-1).
  3. Patient received radiotherapy after being diagnosed with pelvic malignant tumors
  4. Patient diagnosed with chronic radiation proctitis after undergoing colonoscopy more than 6 months after the completion of radiotherapy and did not respond to conventional treatment.
  5. The LENT-SOMA score was ≥1 during the screening period.
  6. All subjects and their partners were not planning to have a child from screening to the end of the trial and agreed to use effective non-drug during the trial.

Exclusion criteria

Exclusion Criteria:

  1. Patients with severe, progressive and uncontrollable diseases of the liver, blood, gastrointestinal tract, endocrine system, lungs, heart, nervous system, mental system or brain.
  2. Patients with allergic constitution or severe systemic diseases.
  3. Patients with active massive gastrointestinal bleeding or acute intestinal obstruction during the screening period.
  4. Pregnant or lactating women.
  5. Patients with rectal stenosis or fistula formation that restricts endoscopic treatment and require surgical treatment.
  6. Patients with a LENT-SOMA score of 4 during the screening period.
  7. Serum virology test (HBeAg, antibody, HlV antibody, Treponema pallidum antibody) positive.
  8. Patients with uncontrolled tumors, tumor recurrence or .
  9. Subjects received any drug within 3 months prior to the screening.
  10. Subjects received stem cell treatment.
  11. Participants considered inappropriate to participate in this clinical trial
Terms in these criteria, in plain language(8)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
6 participants (estimated)

Study arms

  • Experimental
    MSCs treatment group

    Drug: Mesenchymal Stem Cells (MSCs)

Interventions

  • DrugMesenchymal Stem Cells (MSCs)

    single dose injection (120 million cells)

06

What researchers measure

Primary outcomes

  1. Radioactive distribution

    The radioactive distribution in the injection site and various organs or tissues after local injection in patients with radiation proctitis

    Time frame: 8-12 hour、32-36 hour、 56-60 hour. 104-108 hour、152-156 hour, 296-300 hour

Secondary outcomes

  1. Safety endpoint: Treatment-related adverse events/adverse reactions, serious adverse events/serious adverse events

    All subjects were observed for any adverse events/reactions or serious adverse events/reactions that occurred during the clinical trial, including but not limited to clinically significant abnormal changes in clinical symptoms, physical examination, vital signs examination, laboratory examination, 12- ead electrocardiogram examination, etc. The clinical features, severity, occurrence time, end time, treatment and outcome of the disease should be recorded, and the correlation between the disease and the investigational drug should be determined.

    Time frame: Week1, Week 4, Week 24,Month 24

  2. Effectiveness endpoint:Clinical symptom assessment, endoscopic evaluation and clinical improvement.

    The clinical symptom assessment adopts the LENT-SOMA score, total score ranges from 0 to 4, higher score means more severe symptoms. The endoscopic evaluation adopts the Vienna Rectoscopy Score, The score range from 0 to 5 points. The highest score of each individual item is counted as the total VRS score. Higher the VRS score means more severe lesions.

    Time frame: Week 4,Week 24

  3. Radiation exposure

    The uptake rate (%ID), absorbed dose and whole-body effective dose of important organs or tissues after local injection administration of \[89Zr\] human-derived TH-SC01 cell injection.

    Time frame: Week 1

07

Study locations

No study locations are listed for this record.

08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 13, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT06925607
Lead sponsor
Jiangsu Topcel-KH Pharmaceutical Co., Ltd.
Responsible party
Sponsor
First posted
Apr 13, 2025
Start date
Apr 2025 (estimated)
Primary completion
Mar 2026 (estimated)
Completion
Dec 2026 (estimated)
Last update
Apr 13, 2025

Study contacts

Jueyu Xia, Master
Contact
xiajueyu@topcelbio.com
025-52700103

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Mar 2025. You cannot join it, but the record below documents what was studied.

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