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Advanced Malignant Solid NeoplasmPhase 1/2NCT04552704

CD24Fc for the Treatment of Immune Related Adverse Events in Patients With Advanced Solid Tumors, TIRAEC Study

A Phase 1/2 study testing CD24 Extracellular Domain-IgG1 Fc Domain Recombinant Fusion Protein CD24Fc in people with Advanced Malignant Solid Neoplasm, run by Tianhong Li at 1 site in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

This phase I/II trial investigates the side effects and how well CD24Fc works in treating immune related adverse events in patients with solid tumors that have spread to other places in the body (advanced). CD24Fc may prevent autoimmune reactions due to the tissue damage induced by cancer treatment. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Advanced Malignant Solid Neoplasm
What is being tested?
CD24 Extracellular Domain-IgG1 Fc Domain Recombinant Fusion Protein CD24Fc
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
3 participants
Where
1 siteUnited States
Study dates
30 Oct 2020to 26 Jan 2022
Phase
Phase 1/2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Ability to understand and willingness to sign an informed consent form
  • At least 18 years of age
  • Histologically confirmed advanced solid tumors
  • Patients must have grade 2 or 3 irAEs from at least one ICI-containing regimen. Both newly emerging and persistent irAEs are allowed. Systemic steroid therapy or any other form of immunosuppressive therapy for irAEs is allowed. The specific irAEs are
  • Grade 2-3 diarrhea/colitis: Patients with >= 4 stools per day or moderate-severe increase in ostomy output compared to baseline but not life-threatening diarrhea
  • Grade 2-3 pneumonitis: Mild to moderate (grade 2) or severe (grade 3) symptoms (including hypoxia, shortness of breath, requiring oxygen) but not life-threatening respiratory compromise requiring urgent intervention (e.g., tracheostomy or intubation)
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  • Grade 2-3 renal irAE: Creatine increased between 1.6-6.0 x upper limit of normal (ULN) or =< 3.0 x baseline if baseline was abnormal, estimated glomerular filtration rate (eGFR) or creatinine clearance >= 15 ml/min/1.73m^2 but not life-threatening consequences or requiring dialysis
  • Grade 2-3 Hepatic irAE: AST/ALT/ALP levels 3-20 x ULN, and T bilirubin increased <5 x ULN
  • Grade 2-3 skin rash: moderate (10-30% body surface area, BSA) to severe (> 30% BSA) but not life-threatening skin lesions or Stevens-Johnson syndrome
  • Eastern Cooperative Oncology Group (ECOG) performance status < 2
  • Life expectancy of >= 3 months at the time of enrollment
  • Pretreatment absolute neutrophil count (ANC) >= 1,000/uL obtained within 14 days prior to 1st dose of treatment
  • Pretreatment hemoglobin >= 8 gm/dL obtained within 14 days prior to 1st dose of treatment
  • Pretreatment platelet count of >= 75,000/uL obtained within 14 days prior to 1st dose of treatment
  • Female subjects who are of non-reproductive potential (i.e., post-menopausal by history - no menses for >= 1 year; OR history of hysterectomy; OR history of bilateral tubal ligation; OR history of bilateral oophorectomy). Or, female subjects of childbearing potential must have a negative serum or urine pregnancy test within 72 hours prior to the first study drug administration
  • Male and female subjects who agree to use highly effective method of birth control (e.g., implants, injectables, birth control pills with two hormones, intrauterine devices [IUDs], complete abstinence or sterilized partner, and female sterilization) and a barrier method (e.g., condoms, vaginal ring, sponge, etc.) during the period of therapy and for 90 days after the last dose of study drug

Who cannot join

  • Prior CD24Fc therapy
  • Any known active hepatitis B (HBV), hepatitis C (HCV), or human immunodeficiency virus (HIV) or acquired immunodeficiency syndrome (AIDS)-related illness, including patients who have an active infection requiring systemic therapy. History of COVID-19 or known asymptomatic carrier of SARS-CoV-2 virus is allowed
  • Pregnant or lactating women
  • Any medical condition including additional laboratory abnormalities, or psychiatric illness that would, in the opinion of the investigator, prevent the subject from participating and adhering to study related procedures
  • Any known severe bacterial, fungal, or viral infection that in the opinion of the investigator would interfere with patient safety or compliance on trial within 2 weeks prior to enrollment
  • Patients with concomitant proarrhythmic medications
Show all 16Show fewer
  • Patients with heart failure in New York (NY) Heart Association stage IV
  • Any grade 4 irAE symptoms and Common Terminology Criteria for Adverse Events (CTCAE) version (v)5.0 grade 4 toxicity
  • AST, ALT, gamma glutamyl transpeptidase (GGT), or ALP > 20.0 x ULN regardless of baseline
  • Blood bilirubin >5.0 x ULN regardless of baseline
  • Creatinine > 6.0 x ULN or creatinine clearance <15 ml/min/1.73m2
  • Urine: Anuria < 140 ml in 24 hours
  • Electrolytes hyponatremia, sodium < 120 mmol/L
  • Hypokalemia, potassium < 2.5 mmol/L
  • Creatine kinase (CPK) > 10.0 ULN
  • Electrocardiogram (ECG): Prolonged QT interval >= 480 mS, corrected by Fridericia's formula. Torsade de pointes; polymorphic ventricular tachycardia; signs/symptoms of serious arrythmia

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of California Davis Comprehensive Cancer Center

    Sacramento, California, 95817

Other trials in United States

About this study

Official title: Treatment of Immune Related Adverse Events With CD24Fc (TIRAEC)

This phase I/II trial investigates the side effects and how well CD24Fc works in treating immune related adverse events in patients with solid tumors that have spread to other places in the body (advanced). CD24Fc may prevent autoimmune reactions due to the tissue damage induced by cancer treatment. CD24Fc binds to injured cell components and prevents inflammatory responses. CD24Fc also acts to turn off the immune system after it has been activated ("immune checkpoint"). Adding CD24Fc to standard treatment may shorten the recovery time and reduce the severity of side effects from immunotherapy.

Read the detailed description

PRIMARY OBJECTIVES:

  1. To determine the safety and tolerability of CD24 extracellular domain-IgG1 Fc domain recombinant fusion protein CD24Fc (CD24Fc) in patients with advanced solid tumors who developed debilitating immune-related adverse events (irAEs) from immune check point inhibitors (ICIs). (Phase I) II. To determine if CD24Fc shortens the recovery time of irAE and increases the recovery rate of irAE in cancer patients with grade (G)2 or 3 irAEs. (Randomized phase II)

SECONDARY OBJECTIVES:

  1. Time to irAE reduction by at least 1 grade. (Phase I) II. Time to all irAEs reduced to grade =< 1. (Phase I) III. Time to resume ICI treatment. (Phase I) IV. Recovery rate (as defined by reduction of irAE by one grade) at day (D)42. (Phase I) V. To estimate the time to all irAEs reduced to =< 1. (Randomized phase II) VI. To record the use of steroids (drug, dose, duration) and other treatment for irAE. (Randomized phase II) VII. To record the time to resume ICI treatment. (Randomized phase II) VIII. To estimate the preliminary overall response rate (ORR), progression free survival (PFS), and 1-year overall survival (OS) after treatment with or without CD24Fc. (Randomized phase II) IX. To determine if CD24Fc treatment changes the levels of inflammatory markers in the plasma. (Randomized phase II)

OUTLINE:

PHASE I: Patients receive CD24Fc intravenously (IV) over 60 minutes on days 1, 14, and 28 with standard of care (i.e., steroids per treating physician and best supportive care) in the absence of disease progression or unacceptable toxicity.

PHASE II: Patients are randomized to 1 of 2 arms.

ARM I: Patients receive CD24Fc IV over 60 minutes on days 1, 14, and 28 in addition to standard of care treatment for irAE in the absence of disease progression or unacceptable toxicity.

ARM II: Patients receive placebo IV over 60 minutes on days 1, 14, and 28 in addition to standard of care treatment for irAE in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up at days 42 and 60 and then every 3 months for up to 1 year.

Being tested
CD24 Extracellular Domain-IgG1 Fc Domain Recombinant Fusion Protein CD24Fc, Placebo Administration

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • CD24 Extracellular Domain-IgG1 Fc Domain Recombinant Fusion Protein CD24FcBiological

    Also called CD24Fc, CD24Fc CD24IgG

    Given IV

  • Placebo AdministrationDrug

    Given IV

Study groups in NCT04552704
Study groupRoleWhat they receive
Phase I (CD24Fc)ExperimentalPatients receive CD24Fc IV over 60 minutes on days 1, 14, and 28 with standard of care (i.e., steroids per treating physician and best supportive care) in the absence of disease progression or unacceptable toxicity.
Receives: Biological: CD24 Extracellular Domain-IgG1 Fc Domain Recombinant Fusion Protein CD24Fc
Phase II, Arm I (CD24Fc)ExperimentalPatients receive CD24Fc IV over 60 minutes on days 1, 14, and 28 in addition to standard of care treatment for irAE in the absence of disease progression or unacceptable toxicity.
Receives: Biological: CD24 Extracellular Domain-IgG1 Fc Domain Recombinant Fusion Protein CD24Fc
Phase II, Arm II (placebo)Placebo comparatorPatients receive placebo IV over 60 minutes on days 1, 14, and 28 in addition to standard of care treatment for irAE in the absence of disease progression or unacceptable toxicity.
Receives: Drug: Placebo Administration

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants With New Adverse Event (AE) of Grade >= 3 (Phase I)

    Number of Participants with New Adverse Event (AE) of Grade >= 3 (Phase I)

    Measured: At day 60

  2. Recovery Rate (Phase II)

    Defined by reduction of irAE by one grade. Kaplan-Meier plots and confidence intervals will be used to summarize outcomes. Medians and associated 95% confidence intervals will be calculated, and comparisons between groups will be performed by log-rank tests. Cox proportional hazard models will be used to explore association between covariates and outcomes.

    Measured: At day 42

  3. Time to Recovery From Grade 2 or 3 irAE (Phase II)

    Will assess time to recovery from grade 2 or 3 irAE (as defined by reduction of at least 1 grade in irAE severity) from the initiation of CD24Fc treatment. Patients who have not been documented to have event (reduction of at least 1 grade) will be censored at the date of the latest clinical assessment that documented as being free of event.

    Measured: Up to 1 year

Secondary outcomes (9)
  1. Time to irAE Reduction by at Least 1 Grade From the Initiation of CD24Fc Treatment (Phase I)

    Time to irAE reduction by at least 1 grade from the initiation of CD24Fc treatment.

    Measured: Up to 1 year

  2. Time to All irAEs Reduced to =< 1 From the Initiation of CD24Fc Treatment (Phase I)

    Time to all irAEs reduced to =< 1 from the initiation of CD24Fc treatment (Phase I)

    Measured: Up to 2 weeks

  3. Time to Resume Immune Check Point Inhibitor (ICI) Treatment From the Initiation of CD24Fc Treatment (Phase I)

    Time to resume immune check point inhibitor (ICI) treatment from the initiation of CD24Fc treatment (Phase I)

    Measured: Up to about 3.5 months

  4. Recovery Rate (Reduction of irAE by One Grade) (Phase I)

    The fraction of patients who experience a partial response (PR) or complete response (CR) will be determined by dividing the number of responders by the total evaluable patients.

    Measured: At day 42

  5. Time to All irAEs Reduced to =< 1 From the Initiation of CD24Fc Treatment (Phase II)

    Time to all irAEs reduced to =< 1 from the initiation of CD24Fc treatment (Phase II)

    Measured: Up to 1 year

  6. Use of Steroids and Other Drugs (Phase II)

    Summary of use of steroids and other treatment for irAE.

    Measured: Up to 1 year

  7. Overall Response Rate After Retreatment With ICI With or Without CD24Fc After Resolution of irAE (Phase II)

    The fraction of patients who experience a PR or CR will be determined by dividing the number of responders by the total evaluable patients.

    Measured: Up to 1 year

  8. Progression Free Survival (PFS) (Phase II)

    Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0), as a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions.

    Measured: From initiation of ICI to first documented evidence of disease progression or death, whichever comes first, assessed up to 1 year

  9. Overall Survival (OS) (Phase II)

    Count of participants known to be alive up to 1 year from the time from start of treatment.

    Measured: From start of treatment to death, assessed up to 1 year

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted17 Sep 2020
  2. Study start30 Oct 2020
  3. Primary completion3 Feb 2021
  4. Study completion26 Jan 2022

Why it stopped: Terminated early by the Sponsor due to business reason.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1/2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
3 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04552704
Sponsor's protocol ID
1626396
Other IDs
NCI-2020-05955, UCDCC#292, P30CA093373, CD24Fc-006
Status last verified
Jul 2026
First submitted
10 Sep 2020
Last updated
10 Aug 2026
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing CD24 Extracellular Domain-IgG1 Fc Domain Recombinant Fusion Protein CD24Fc in people with Advanced Malignant Solid Neoplasm, run by Tianhong Li at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 16 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 10 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this combined phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 4 Apr 2022). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants With New Adverse Event (AE) of Grade >= 3 (Phase I) (time frame: At day 60). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Aug 2026.

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