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CompletedNCT06296056SDH-CombiUpdated Oct 1, 2025

Phase I Trial of Combined Immune Cell Therapy for Metastatic Stage IV Solid Tumors (SDH-Combi)

A Phase 1 interventional study of Combi in Solid Tumors and Metastatic, sponsored by Seoul Hospital. Completed at 1 site in Mongolia. Open to participants aged 19 Years and older. Per ClinicalTrials.gov, last updated 2025-10-01.

Sponsored by Seoul Hospital · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
9
Allocation
Not applicable
Ages
19 Years and older
Sex
All
01

Study summary

To evaluate the safety and potential efficacy of combined immune cell therapy in patients with stage IV solid tumors who have failed standard treatment and have unresectable lesions or metastatic lesions.

Read the detailed description

The combined immune cell therapy has a strong potential to improve treatment outcomes in several cancers, but problems related to manufacturing complexity, immunocompatibility, and poteintial toxicity may also arise. This clinical study was designed to address these challenges and to establish the safety and potential efficacy of combined immune cell therapy for unresectable solid tumors. This is a phase I study to evaluate the safety and potential efficacy of combined immune cell theapy, and obtain the recommended dose and infusion plan.

02

Conditions studied

  • Solid Tumors
  • Metastatic

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Keywords

  • immune cell therapy
  • dendritic cell
  • natural killer cell
  • cytotoxic T lymphocytes
03

In context

Neoplasm Metastasis

4,040 studies on the registry are indexed under Neoplasm Metastasis; 886 are open to participants now.

This study's enrollment of 9 is below the median of 50 across 3,268 interventional studies indexed under Neoplasm Metastasis.

Browse Neoplasm Metastasis studies →

Lead sponsor

This is the only study on the registry with Seoul Hospital as lead sponsor.

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

04

Who can participate

Ages eligible
19 Years and older
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

  • Those who have been or cytologically confirmed as adenocarcinoma among solid tumors
  • Those with at least one measurable or evaliable lesion by v1.1
  • Those who fail standard treatment for solid tumors (failure of treatment is defined as failure of not only progression of the disease or recurrence after treatment, but also unacceptable side effects or maintenance of the treatment process)
  • performance status 0 or 1 person
  • A person who can draw about 100 cc of whole blood for the manufacture of immune cells

    • Weight: More than 50 kg for men and more than 35 kg for women
    • : 9.0 g/dL or higher (registerable if hemoglobin levels recover to 10.0 g/dL or higher during the screening period); however, transfusions within 7 days prior to screening to meet this standard are not allowed)
  • Appropriate regimen up to 2 months after clinical research drug administration
  • A person who voluntarily decides to participate after receiving a sufficient explanation for this clinical study and agrees in writing

Exclusion criteria

Exclusion Criteria:

  • patients who have symptoms or need treatment [However, patients with stable brain metastasis who have no symptoms and do not need treatment (excluding anticonvulsants in maintenance therapy) can register]
  • A person with a systemic disease that is inappropriate to administer anticancer drugs according to the researcher's judgment
  • Those with the following cardio-cerebrovascular diseases as of the time of screening
  • a person who is -positive
  • Those determined that the researcher was not suitable for participation in this clinical study as a result of the active infection (, ) test
  • a person with acute or severe infection
  • Those who have diseases or have a history of chronic or recurrent autoimmune diseases
  • Those with a history of organ transplants
  • a hematopoietic stem cell transplant patient
Terms in these criteria, in plain language(11)

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.

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.

RECIST

The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.

“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.

Metastases

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

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.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

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.

Brain metastases

Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).

Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

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.

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.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
9 participants (actual)

Study arms

  • Experimental
    SDH-Combi

    natural killer (NK) cells and cytotoxic T lymphocytes (CTLs)

    Biological: Combi

Interventions

  • BiologicalCombi

    Biological immune cell therapy

06

What researchers measure

Primary outcomes

  1. Number of participants with treatment-related adverse events (AEs)

    All AEs will be collected and graded according to NCI-CTCAE v5.0. Data will be reported as the number and percentage of participants experiencing ≥1 AE.

    Time frame: 6 months

  2. Number of participants with serious adverse events (SAEs)

    SAEs will be assessed for type, severity, and relationship to the investigational product. Reported as the number and percentage of participants experiencing ≥1 SAE.

    Time frame: 6 months

Secondary outcomes

  1. Objective Response Rate (ORR) assessed by RECIST v1.1

    Defined as the proportion of participants with Complete Response (CR) or Partial Response (PR) according to RECIST v1.1. Reported as a percentage of evaluable participants.

    Time frame: 6 months

  2. Disease Control Rate (DCR) assessed by RECIST v1.1

    Defined as the proportion of participants achieving CR, PR, or Stable Disease (SD). Reported as a percentage of evaluable participants.

    Time frame: 6 months

  3. Change from baseline in EORTC QLQ-C30 global health status/quality of life score

    Change from baseline to 6 months in the global health status/QoL domain of the EORTC QLQ-C30 questionnaire (0-100 scale; higher score indicates better outcome). Reported as mean change from baseline with standard deviation.

    Time frame: 6 months

07

Study locations

1 site
  • Seoul Hospital
    Ulaanbaatar, Mongolia
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Aug 2024 to primary completion in May 2025, 9 months.

Of 210 non-industry phase 1 interventional studies under Neoplasm Metastasis, half reached primary completion within 61 months of starting (the median), counting those still running; a quarter within 40 and three quarters within 98. This study's 9 months is below that.

Counting every sponsor, half of 496 studies reached it within 54 months; a quarter within 33 and three quarters within 83.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 20, 2024
First posted
Mar 6, 2024
StartActual
Aug 1, 2024
Primary completionActual
May 28, 2025
CompletionActual
Jun 8, 2025
Last update
Oct 1, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Oct 1, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06296056
Lead sponsor
Seoul Hospital
Responsible party
Nyamdavaa Tuul (Director, Seoul Hospital) — Principal investigator
First posted
Mar 6, 2024
Start date
Aug 1, 2024
Primary completion
May 28, 2025
Completion
Jun 8, 2025
Last update
Oct 1, 2025

Oversight

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

Not currently enrolling

This study is completed, as verified in Sep 2025. You cannot join it, but the record below documents what was studied.

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