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Active, not recruitingNCT03707808myDAvIpNiUpdated Sep 29, 2026

Intratumoral Injection of Autologous CD1c (BDCA-1)+ myDC, AS01B, and Ipilimumab Plus Systemic Nivolumab

A Phase 1/2 interventional study of intratumoral injection of autologous CD1c (BDCA-1)+ myDC and Intratumoral injection of ipilimumab and AS01b in Solid Tumor and Metastases to Soft Tissue, sponsored by Universitair Ziekenhuis Brussel. Active, not recruiting at 1 site in Belgium. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-29.

Sponsored by Universitair Ziekenhuis Brussel · Phase 1/2, Interventional, and Treatment

Updated Sep 29, 2026Now Active, not recruitingPrimary completion moved+3 moreGo to Updates ↓
Phase
Phase 1/2
Study type
Interventional
Enrollment
18
Allocation
Randomized
Ages
18 Years and older
Sex
All
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Study summary

This phase II trial aims at investigating the role and effect of autologous CD1c (BDCA-1)+ myeloid dendritic cells in combination with intratumoral injection of the CTLA-4 blocking monoclonal antibody (mAb) ipilimumab and the immunoligand AS01B compared to a combinatorial immunotherapy regimen using intratumoral injection of the CTLA-4 blocking monoclonal antibody (mAb) ipilimumab and the immunoligand AS01B. Concomitantly, nivolumab (a PD-1 blocking mAb) will be administered intravenously in both arms.

Read the detailed description

This phase II trial aims at investigating the role and effect of autologous CD1c (BDCA-1)+ myeloid dendritic cells in combination with intratumoral injection of the CTLA-4 blocking monoclonal antibody (mAb) ipilimumab and the immunoligand AS01B compared to a combinatorial immunotherapy regimen using intratumoral injection of the CTLA-4 blocking monoclonal antibody (mAb) ipilimumab and the immunoligand AS01B. Concomitantly, nivolumab (a PD-1 blocking mAb) will be administered intravenously in both arms.

CD1c (BDCA-1)+ myeloid dendritic (myDC) cells will be obtained by immunomagnetic isolation from PBMC obtained by leukapheresis. The CD1c (BDCA-1)+ myDC will not be substantially manipulated prior to autologous intratumoral injection, immediately following the isolation and concentration (isolation and administration will be performed in the same procedure). The investigators consider that the isolation represents a non-substantial manipulation of this somatic cell therapy product. The intended use of CD1c (BDCA-1)+ myDC in this clinical protocol is to enrich their presence within the injected metastasis where they should execute their physiological role of coordinating the anti-tumor immune response. Based on recent preclinical data, absence of myeloid dendritic cells in the tumor microenvironment is an important immune escape mechanism of malignant tumors.

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Conditions studied

  • Solid Tumor
  • Metastases to Soft Tissue

Keywords

  • solid tumors
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In context

Lead sponsor

Universitair Ziekenhuis Brussel is the lead sponsor of 362 studies on the registry; 103 are open to participants now.

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

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Subject has provided informed consent prior to initiation of any study-specific activities/procedures.
  • Male or female age ≥ 18 years at the time of informed consent
  • Histologically confirmed advanced solid tumor that cannot be completely surgically resected
  • Failing all standard curative and live prolonging therapy.
  • Presence of skin- or lymphnode metastatic disease amenable to intratumoral injection by manual palpation, US or CT-guidance. At least one metastatic lesion should be amenable to a safe post-injection biopsy (by core needle biopsy, partial- or complete surgical resection).
  • ECOG performance status of 0 or 1
  • Candidate for intralesional therapy defined as either one of the following:
  • At least 1 injectable skin or lymph node metastatic lesion with a longest diameter of ≥ 10 mm
  • Multiple injectable tumor lesions that in aggregate have a longest diameter of ≥ 10 mm injectable disease
  • Adequate organ function determined within 14 days prior to enrollment, defined as follows:
  • Hematological: absolute neutrophil count ≥ 1500/mm3 (1.5x109/L), platelet count: ≥ 100.000/mm3 (7.5x109/L), hemoglobin: ≥ 9 g/dL (without need for hematopoietic growth factor or transfusion support)
  • Renal: serum creatinine: 1.5 x upper limit of normal (ULN), OR 24-hour creatinine clearance ≥ 60 mL/min for subject with creatinine levels > 1.5 x ULN. (Note: Creatinine clearance need not be determined if the baseline serum creatinine is within normal limits. Creatinine clearance should be calculated per institutional standard).
  • Hepatic: serum bilirubin: 1.5 x ULN OR direct bilirubin ≤ ULN for a subject with total bilirubin level > 1.5 x ULN, aspartate aminotransferase (AST): 2.5 x ULN OR ≤ 5 x ULN for subject with liver metastases, alanine aminotransferase (ALT): 2.5 x ULN OR ≤ 5 x ULN for subject with liver metastases
  • Coagulation: international normalization ratio (INR) or prothrombin time (PT): 1.5 x ULN unless the subject is receiving anticoagulant therapy as long as PT and partial thromboplastin time (PTT)/ activated PTT (aPTT) is within therapeutic range of intended use of anticoagulants, PTT or aPTT: 1.5 x ULN unless the subject is receiving anticoagulant therapy as long as PT and PTT/aPTT is within therapeutic range of intended use of anticoagulants
  • Female subject of childbearing potential should have a negative urine or serum pregnancy test within 72 hours prior to enrollment. If urine pregnancy test is positive or cannot be confirmed as negative, a serum pregnancy test will be required.
  • Availability of a tumor sample (archival sample obtained within 3 months prior to study participation or newly obtained biopsy). Subject must submit the tumor sample during screening. Subjects with a non-evaluable archival sample may obtain a new biopsy and subjects with a non-evaluable newly obtained biopsy may undergo re-biopsy at the discretion of the investigator.
  • Adequate vascular access to undergo a leucapheresis.

Exclusion criteria

Exclusion Criteria:

  • Known active central nervous system (CNS) metastases. Subjects with previously treated brain metastases may participate provided they are stable (without evidence of progression by imaging for at least four weeks prior to the first dose of trial treatment and any neurologic symptoms have returned to baseline), have no evidence of new or enlarging brain metastases, and are not using steroids >8 mg/day of methylprednisone or equivalent. The exception does not include carcinomatosus meningitis which is excluded regardless of clinical stability.
  • History or evidence of active autoimmune disease that requires systemic treatment (ie, with use of disease modifying agents, corticosteroids or immunosuppressive drugs). Replacement therapy (eg, thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment.
  • History or evidence of immunodeficiency states (eg, hereditary immune deficiency, organ transplant, or leukemia)
  • History of other malignancy within the past 5 years with the following exceptions: malignancy treated with curative intent and with no known active disease present and has not received chemotherapy for > 5 years before enrollment and felt to be at low risk for recurrence by the treating physician, adequately treated non-melanoma skin cancer without evidence of disease at the time of enrollment, adequately treated cervical carcinoma in situ without evidence of disease at the time of enrollment, adequately treated breast ductal carcinoma in situ without evidence of disease at the time of enrollment , prostatic intraepithelial neoplasia without evidence of prostate cancer at the time of enrollment, adequately treated superficial or in-situ carcinoma of the bladder without evidence of disease at the time of enrollment
  • Prior treatment of other tumor vaccine
  • Prior chemotherapy, radiotherapy, biological cancer therapy, targeted therapy, or major surgery within 28 days prior to enrollment or has not recovered to CTCAE grade 1 or better from adverse event due to cancer therapy administered more than 28 days prior to enrollment.
  • Currently receiving treatment in another investigational device or drug study, or less than 28 days since ending treatment on another investigational device or drug study
  • Expected to require other cancer therapy while on study with the exception of local radiation treatment to the site of bone and other metastasis for palliative pain management
  • Other investigational procedures while participating in this study are excluded.
  • History or evidence of symptomatic autoimmune pneumonitis, glomerulonephritis, vasculitis, or other symptomatic autoimmune disease, or active autoimmune disease or syndrome that has required systemic treatment in the past 2 years (ie, with use of disease modifying agents, corticosteroids or immunosuppressive drugs) except vitiligo or resolved childhood asthma/atopy. Replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment.
  • Evidence of clinically significant immunosuppression such as the following: diagnosis of immunodeficiency, concurrent opportunistic infection, receiving systemic immunosuppressive therapy (> 2 weeks) or within 7 days prior to the first dose of study treatment, including oral steroid doses > 10 mg/day of prednisone or equivalent except for management of adverse events and central nervous system (CNS) metastases during the course of the study. Subjects that require intermittent use of bronchodilators or local steroid injection will not be excluded from the study.
  • Known human immunodeficiency virus (HIV) disease
  • Known acute or chronic hepatitis B or hepatitis C infection
  • Female subject is pregnant or breast-feeding, or planning to become pregnant during study treatment and through 3 months after the last dose of study treatment
  • Female subject of childbearing potential who is unwilling to use acceptable method(s) of effective contraception during study treatment and through 3 months after the last dose of study treatment. Note: Women not of childbearing potential are defined as: postmenopausal (defined as at least 12 months with no menses without an alternative medical cause; in women \< 45 years of age a high follicle stimulating hormone (FSH) level in the postmenopausal range may be used to confirm a post-menopausal state in women not using hormonal contraception or hormonal replacement therapy. In the absence of 12 months of amenorrhea, a single FSH measurement is insufficient.) OR have had a hysterectomy and/or bilateral oophorectomy, bilateral salpingectomy or bilateral tubal ligation/occlusion, at least 6 weeks prior to screening; OR has a congenital or acquired condition that prevents childbearing. Note: Acceptable methods of effective contraception are defined in the informed consent form.
  • Male subject unwilling to use acceptable method of effective contraception during trial participation and through 3 months after the last dose of study treatment. For this trial, male subjects will be considered to be of non-reproductive potential if they have azoospermia (whether due to having had a vasectomy or due to an underlying medical condition). Note: Acceptable methods of effective contraception are defined in the informed consent form.
  • Subject has known sensitivity to any of the products or components to be administered during dosing
  • Subject likely to not be available to complete all protocol-required study visits or procedures, and/or to comply with all required study procedures to the best of the subject and investigator's knowledge
  • History or evidence of psychiatric, substance abuse, or any other clinically significant disorder, condition or disease (with the exception of those outlined above) that, in the opinion of the investigator physician, if consulted, would pose a risk to subject safety or interfere with the study evaluation, procedures or completion
  • Is or has an immediate family member (eg, spouse, parent/legal guardian, sibling, or child) who is investigational site or sponsor staff directly involved in the this trial, unless prospective institutional review board (IRB)/independent ethics committee (IEC) approval (by chair or designee) is given allowing exception to this criterion for a specific subject
  • Sexually active subject who is unwilling to use a barrier method to avoid potential viral transmission during sexual contact during and within 3 months after study treatment.
  • Prior allogeneic hematopoietic stem cell transplantation within the last 5 years. (Subjects who have had a transplant > 5 years ago are eligible as long as there are no symptoms of Graft versus Host Disease.)
  • Known history of active Bacillus tuberculosis
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Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
18 participants (actual)

Study arms

  • Experimental
    Immediate treatment

    IT injection of MyDC, ipilimumab and AS01b + IV nivolumab

    Drug: intratumoral injection of autologous CD1c (BDCA-1)+ myDC · Drug: Intratumoral injection of ipilimumab and AS01b · Drug: IV nivolumab

  • Active comparator
    Delayed treatment

    IT injection of ipilimumab and AS01b + IV nivolumab

    Drug: Intratumoral injection of ipilimumab and AS01b · Drug: IV nivolumab

Interventions

  • Drugintratumoral injection of autologous CD1c (BDCA-1)+ myDC

    intratumoral injections plus intravenous administration

  • DrugIntratumoral injection of ipilimumab and AS01b

    Intratumoral injection of ipilimumab and AS01b

    Also known as: intratumoral injection of ipilimumab and AS01B, intravenous nivolumab, intratumoral injection of ipilimumab and avelumab, intravenous nivolumab

  • DrugIV nivolumab

    Nivolumab administered intravenously

    Also known as: Nivolumab intravenous administration

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What researchers measure

Primary outcomes

  1. Incidence and severity of Treatment-related Adverse Events graded according to CTCAE of intratumoral injection of autologous CD1c (BDCA-1)+ myDC plus AS01B and ipilimumab in combination with IV nivolumab

    Participants with treatment-related adverse events will be assessed by Common Terminology Criteria for Adverse Events (CTCAE) Version 5.0

    Time frame: 1 year

  2. To assess the therapeutic efficacy and toxicity of the AS01B adjuvants in combination with systemic PD-1 blockade and intratumoral CTLA-4 inhibition plus intratumoral administration of CD1c (BDCA-1)+ / CD141 (BDCA-3)+ myDC co-product in patients

    1-year progression free survival (PFS) rate following randomization.

    Time frame: 1 year

  3. Feasibility of treatment strategy

    Percentage of study patients that can receive the planned CD1c (BDCA-1)+ / CD141(BDCA-3)+ myDC intratumoral injection.

    Time frame: 1 year

Secondary outcomes

  1. Objective response rate (ORR) of intratumoral injected CD1c (BDCA-1)+ myDC, avelumab, and ipilimumab plus iv nivolumab

    Objective response rate (ORR, defined as the percentage of subjects with a confirmed complete response (CR), or partial response at any time per Response Evaluation Criteria in Solid Tumors (RECIST), version 1.1

    Time frame: 1 year

  2. Treatment disposition

    Number/volume of administered CD1c (BDCA-1)+ / CD141 (BDCA-3)+ myDC Administered dose of AS01, ipilimumab, and nivolumab

    Time frame: 1 year

  3. Anti-tumor activity

    Tumor response (ORR) according to RECISTv1.1 and iRECIST Tumor response and duration of response of CD1c (BDCA-1)+ / CD141 (BDCA-3)+ myDC, AS01, and ipilimumab injected and non-injected metastases (reported descriptively)

    Time frame: 1 year

  4. Duration of response (DOR)

    Duration of response of CD1c (BDCA-1)+ / CD141 (BDCA-3)+ myDC, AS01B and ipilimumab in injected and non-injected metastases (reported descriptively)

    Time frame: 1 year

  5. Progression-free survival (PFS)

    Time from first study treatment administration to progression of disease according to RECISTv1.1 and iRECIST (and possibly itRECIST)

    Time frame: 1 year

  6. Overall survival

    Time from first study treatment administration to death

    Time frame: 1 year

Other outcomes

  1. Effect on cellular- and molecular characteristics of the tumor microenvironment during/following study treatment

    Immunohistochemical analysis (CD3, CD8, CD4, PD-L1), multiplexed immunofluorescent imaging, and RNA-expression profiling (NanoString PanCancer IO 360 gene expression panel) of repetitive on-treatment tissue biopsies/FNA of injected metastases T-cell receptor repertoire in metastases assessed by ImmunoSEQ analysis

    Time frame: 1 year

  2. Effect of study treatment on blood lymphocytes

    Peripheral blood differential white blood cell counts Immunocytochemical differential cell counts (incl. CD3+, CD4+ and CD8+ lymphocytes) T-cell receptor repertoire assessed by ImmunoSEQ analysis Flow cytometric analysis of effector/naïve/memory T cells

    Time frame: 1 year

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Study locations

1 site
  • UZ Brussel
    Jette, Brabant 1090, Belgium
08

References and documents

Publications

  • Tijtgat J, Geeraerts X, Boisson A, Stevens L, Vounckx M, Dirven I, Schwarze JK, Raeymaeckers S, Forsyth R, Van Riet I, Tuyaerts S, Willard-Gallo K, Neyns B. Intratumoral administration of the immunologic adjuvant AS01B in combination with autologous CD1c (BDCA-1)+/CD141 (BDCA-3)+ myeloid dendritic cells plus ipilimumab and intravenous nivolumab in patients with refractory advanced melanoma. J Immunother Cancer. 2024 Jan 11;12(1):e008148. doi: 10.1136/jitc-2023-008148. PubMed 38212127 ↗

Individual participant data

Plan to share: No

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Updates

1 registry update since Sep 25, 2026
Status
Recruiting→Active, not recruiting
changed Sep 29, 2026
Primary completion
Dec 24, 2025→Apr 23, 2027
Sep 29, 2026
Study completion
Dec 24, 2025→Dec 23, 2027
Sep 29, 2026
Also revised
primary outcomes
Show all 1 update
  1. Sep 29, 2026
    Recruiting→Active, not recruiting
    Primary completion Dec 24, 2025→Apr 23, 2027
    Study completion Dec 24, 2025→Dec 23, 2027
    Primary outcomes Revised (2 changes)
    + 8 other changes: identifiers, verification date, oversight details, arm descriptions, contact details, site details, references and index terms

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

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Registry details

Key details

Study ID
NCT03707808
Lead sponsor
Universitair Ziekenhuis Brussel
Responsible party
Sponsor
First posted
Oct 16, 2018
Start date
Jan 29, 2018
Primary completion
Apr 23, 2027 (estimated)
Completion
Dec 23, 2027 (estimated)
Last update
Sep 29, 2026

Oversight

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

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