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HLA-A2 Positive Cells PresentPhase 2NCT04093323

Polarized Dendritic Cell (aDC1) Based Treatment, Interferon Alpha-2, Rintatolimod, and Celecoxib for the Treatment of HLA-A2+ Refractory Melanoma

A Phase 2 study testing Alpha-type-1 Polarized Dendritic Cells, Celecoxib and PD-1 Ligand Inhibitor in people with HLA-A2 Positive Cells Present and Refractory Melanoma, run by Roswell Park Cancer Institute 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 II trial studies how well polarized dendritic cell (aDC1) based therapy, interferon alpha-2, rintatolimod, and celecoxib work together in treating patients with HLA-A2 positive (+) melanoma that has not responded to previous treatment (refractory). Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Alpha-type-1 Polarized Dendritic Cells, Celecoxib and PD-1 Ligand Inhibitor
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
1 participants
Where
1 siteUnited States
Study dates
13 Nov 2024to 19 Jun 2025
Phase
Phase 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

  • Participant must be HLA-A2+. Retesting is not required for patients who have previous documented positivity
  • Have IO-refractory melanoma with primary PD-1/PD-L1resistance. Note: Any lines of prior therapies are allowed, but the last line needs to include an anti PD-1 or anti PD-L1 agent. The prior treatments may include any standard and/or experimental therapies
  • Have >= 1 tumor site amenable to core needle biopsy that is not the site of disease used to measure antitumor response
  • Have measurable disease based on RECIST 1.1 criteria present
  • Have an Eastern Cooperative Oncology Group (ECOG) performance status of 0-2
  • Platelets >= 75,000/microliter
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  • Hemoglobin >= 9 g/deciliter
  • Absolute neutrophil count (ANC) >= 1500/microliter
  • Creatinine < 1.5 x institutional upper limit of normal (ULN) OR creatinine clearance >= 50 mL/min by Cockcroft-Gault formula for subjects with creatinine levels >= 1.5 x ULN
  • Total bilirubin not greater than 1.5 x institutional ULN, except for patients with known Gilbert's Syndrome, who are eligible to no more than 2 x institutional ULN
  • Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT]) and alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) no greater than 3 x institutional ULN OR, no greater than 5 x ULN for subjects with liver metastases
  • Participants of child-bearing potential must agree to use adequate contraceptive methods (e.g., hormonal or barrier method of birth control; abstinence) prior to study entry. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately
  • Participant must understand the investigational nature of this study and sign an Independent Ethics Committee/Institutional Review Board approved written informed consent form prior to receiving any study related procedure
  • Candidate for continuation/resumption of anti-PD-1/PD-L1 blockade (in parallel to DC vaccine and CKM)

Who cannot join

  • Is currently being treated with systemic immunosuppressive agents, including steroids: Subjects will be ineligible until 3 weeks after removal from immunosuppressive treatments, except when they are administered as replacement therapy for endocrine dysfunction (and receive no more than 10 mg prednisone or equivalent: inhaled steroids are allowed)
  • Has had prior anti-cancer therapy within 2 weeks prior to study day 1 or who has not recovered (i.e., no more than grade 1 or at baseline) from adverse events due to a previously administered agent, except for neuropathy (no more than grade 2) or alopecia or vitiligo (any grade)
  • Has a known additional malignancy that is progressing or requires active treatment
  • Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis. Treated brain metastases are allowed, if stable for more than 4 weeks (and receive no more than 10 mg prednisone or equivalent: inhaled steroids are allowed).
  • Has a history of cardiac event(s) (acute coronary syndrome, myocardial infarction, or ischemia (within 3 months of signing consent) or, subject has a New York Heart Association classification of III or IV
  • Has an active infection requiring systemic therapy
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  • Has known active hepatitis B or hepatitis C infection
  • Has known immunosuppressive disease (e.g. human immunodeficiency virus [HIV], acquired immunodeficiency syndrome [AIDS] or other immune depressing disease). Testing is not mandatory
  • Has known serious hypersensitivity reactions to pegylated (peg)-interferon alpha-2b or interferon alpha-2b
  • Prior allergic reaction or hypersensitivity to sulfonamides, celecoxib, or nonsteroidal anti-inflammatory drugs (NSAIDs)
  • Has received a blood transfusion in the two weeks prior to leukapheresis
  • Women of child bearing potential who are pregnant or nursing
  • Unwilling or unable to follow protocol requirements
  • Any condition which in the Investigator's opinion deems the participant an unsuitable candidate or unacceptable risk to receive study drug regimen
  • Patients who showed initial response to PD-1/PD-L1 blockade and developed secondary resistance

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Roswell Park Cancer Institute

    Buffalo, New York, 14263

Other trials in United States

About this study

Official title: A Phase II Study of Type-1 Polarized Dendritic Cell (aDC1) -Based Treatment in Combination With Tumor-Selective Chemokine Modulation (CKM: Interferon Alpha 2b, Rintatolimod and Celecoxib) in Melanoma Patients With Primary PD-1/PD-L1 Resistance

This phase II trial studies how well polarized dendritic cell (aDC1) based therapy, interferon alpha-2, rintatolimod, and celecoxib work together in treating patients with HLA-A2 positive (+) melanoma that has not responded to previous treatment (refractory). The aDC1 cell-based treatment contains white blood cells (dendritic cells or DCs) that stimulates the immune system. Interferon alpha-2 can improve the body's natural response to infections and other diseases. It can also interfere with the division of cancer cells and slow tumor growth. Rintalolimid may stimulate the immune system. Celecoxib is a drug that reduces pain. This study is being done to find out if the combination of the study cell-based treatment (aDC1 dendritic cells) and interferon alpha-2, rintatolimod, and celecoxib can prevent the growth and/or progression of melanoma.

Read the detailed description

PRIMARY OBJECTIVE:

  1. To evaluate the objective response rate to treatment with an autologous alpha-type-1 polarized dendritic cells (alphaDC1)/TBVA cell-based treatment (alpha-type-1-polarized dendritic cells loaded with tumor blood vessel-targeting antigenic peptides) plus cytokine modulating (CKM) regimen (rintatolimod, recombinant interferon alpha-2 [IFN-alpha2b] and, celecoxib) in human leukocyte antigen (HLA)-A2+ subjects with primary PD-1 resistant immuno-oncology (IO)-refractory melanoma (who will continue the original PD-1/PD-L1 regimen for 12 weeks).

SECONDARY OBJECTIVES:

  1. To evaluate the immune-related objective response rate (objective response rate [ORR]; per immune-related Response Evaluation Criteria in Solid Tumors [iRECIST];) in the above patient population treated with autologous alphaDC1/TBVA cell-based treatment plus cytokine CKM regimen followed by continued treatment with PD-1/PD-LI blockade (+/- CTLA4 blockade or LAG3 blockade).

II. Evaluate rate of durable responses (> 6 months) on the combination treatment in the above patient population treated with autologous alphaDC1/TBVA cell-based treatment plus cytokine CKM regimen followed by continued treatment with PD-1/PD-L1 blockade (+/- CTLA4 blockade or LAG3 blockade).

EXPLORATORY OBJECTIVES:

  1. Examine whether the combination of peptide-loaded autologous alphaDC1 cell-based treatment and tumor-selective chemokine modulation (CKM: IFN-a2b, rintatolimod, and celecoxib) improves the overall survival (OS) and immune-related progression-free survival (iPFS) in HLA-A2+ subjects PD-1/PD-L1-refractory melanoma compared to the historical control of the best supportive care.

II. Identify the intratumoral and systemic immune correlates of the response to treatment.

OUTLINE:

Patients receive recombinant interferon alpha-2 intravenously (IV) over 30 minutes, rintatolimod IV over 2.5 hours, and celecoxib orally (PO) twice daily (BID) on days 1-3. Beginning cycle 2, patients also receive alpha-type-1 polarized dendritic cells intradermally (ID) on day 1. Treatment repeats every 3 weeks up to 4 cycles in the absence of disease progression or unacceptable toxicity. At 12 weeks, patients with progressive disease may switch to ipilimumab with or without a PD-1/PD-L1 inhibitor and patients with a complete response (CR), partial response (PR), or stable disease (SD) may switch to a PD-1/PD-L1 inhibitor or best alternative care.

After completion of study treatment, patients are followed up every 3 months for up to 2 years.

Being tested
Alpha-type-1 Polarized Dendritic Cells, Celecoxib, PD-1 Ligand Inhibitor, PD1 Inhibitor, Recombinant Interferon Alfa-2b
Medical subject headings
Melanoma

What participants receive

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

  • Alpha-type-1 Polarized Dendritic CellsBiological

    Also called alphaDC1

    Given ID

  • CelecoxibDrug

    Also called Benzenesulfonamide, 4-[5-(4-methylphenyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl]-, Celebrex, SC-58635, YM 177

    Given PO

  • PD-1 Ligand InhibitorDrug

    Also called PD-1 Ligands Inhibitor

    Given IV

  • PD1 InhibitorDrug

    Also called PD-1 Inhibitor, Programmed Cell Death Protein 1 Inhibitor, Protein PD-1 Inhibitor

    Given IV

  • Recombinant Interferon Alfa-2bBiological

    Also called Alfatronol, Glucoferon, Heberon Alfa, IFN alpha-2B

    Given IV

  • RintatolimodDrug

    Also called Ampligen, Atvogen

    Given IV

Study groups in NCT04093323
Study groupRoleWhat they receive
Treatment (IFNA2, rintatolimod, celecoxib, alphaDC1 cell based treatment)ExperimentalPatients receive recombinant interferon alpha-2 IV over 30 minutes, rintatolimod IV over 2.5 hours, and celecoxib PO BID on days 1-3. Beginning cycle 2, patients also receive alpha-type-1 polarized dendritic cells ID on day 1. Treatment repeats every 3 weeks up to 4 cycles in the absence of disease progression or unacceptable toxicity. At 12 weeks, patients with progressive disease may switch to ipilimumab with or without a PD-1/PD-L1 inhibitor and patients with a complete response CR, PR, or stable disease SD may switch to a PD-1/PD-L1 inhibitor or best alternative care.
Receives: Biological: Alpha-type-1 Polarized Dendritic Cells; Drug: Celecoxib; Drug: PD-1 Ligand Inhibitor; Drug: PD1 Inhibitor; Biological: Recombinant Interferon Alfa-2b; Drug: Rintatolimod

What is being measured

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

  1. Objective Response Rate (ORR)

    Will be evaluated using Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 criteria. Will be carried out by an exact binomial test of a proportion within a Simon two-stage design.

    Measured: At 12 weeks

Secondary outcomes (2)
  1. ORR

    Will be evaluated using immune-related RECIST (iRECIST) criteria in patients that continue on with either PD1 and/or CTLA4 blockade after meeting the 12-week primary objective treated with autologous alpha-type-1 polarized dendritic cells (alphaDC1)/tumor blood vessel-targeting antigenic peptides (TBVA) cell-based treatment plus cytokine modulating (CKM) regimen followed by re-treatment with PD1 blockade (+/- CTLA4 blockade). The analysis will be primarily descriptive and consist of sample proportions and the corresponding 95% confidence intervals.

    Measured: At 6 months

  2. Durable Objective Response Rate (>= 6 Months)

    Will be evaluated on patients treated autologous alphaDC1/TBVA cell-based treatment plus cytokine CKM regimen followed by retreatment with PD1 blockade (+/- CTLA4 blockade). The analysis will be primarily descriptive and consist of sample proportions and the corresponding 95% confidence intervals.

    Measured: From time of first confirmed response assessed up to 2 years

Timeline

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

  1. First posted18 Sep 2019
  2. Study start13 Nov 2024
  3. Primary completion3 Apr 2025
  4. Study completion19 Jun 2025

Why it stopped: Funding completed

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 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
1 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04093323
Sponsor's protocol ID
I 82419
Other IDs
NCI-2019-05911, I 82419, P01CA234212
Status last verified
Feb 2026
First submitted
16 Sep 2019
Last updated
25 Feb 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 2 study testing Alpha-type-1 Polarized Dendritic Cells, Celecoxib and PD-1 Ligand Inhibitor in people with HLA-A2 Positive Cells Present and Refractory Melanoma, run by Roswell Park Cancer Institute 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 14 inclusion and 15 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 25 Feb 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. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

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 25 Feb 2026). 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?

Objective Response Rate (ORR) (time frame: At 12 weeks). 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 25 Feb 2026.

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