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mRNA Electroporated Autologous Dendritic Cells for Stage III/IV Melanoma

Randomized Controlled Phase II Clinical Trial on mRNA Electroporated Autologous Dendritic Cells for Stage III/IV Melanoma Patients Who Are Disease-free Following the Local Treatment of Macrometastases.

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01676779
Acronym
DC-MEL
Enrollment
88
Registered
2012-08-31
Start date
2012-10-31
Completion date
2016-09-30
Last updated
2017-05-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Malignant Melanoma Stage III, Malignant Melanoma Stage IV

Keywords

melanoma, no evidence of disease, resection, macro-metastases

Brief summary

This is an open label, 2-arm, 1-stage, randomized controlled phase II study in patients with AJCC stage IIIB/C & -IV melanoma. At baseline tumor assessment (using total body FDG-PET/CT), patients should be free from measurable tumor lesions (according to RECISTv1.1 definitions) following prior local therapy (e.g. following surgical resection, isolated limb perfusion, radiofrequency ablation, cryotherapy, radiotherapy, electrochemotherapy, …). Patients should not have symptomatic non-measurable tumor lesions (e.g. bone metastasis, or pleural effusion), and lesions treated by prior local therapy should be free from progression. Patients should not have received any prior systemic therapy (non-experimental or experimental).

Detailed description

This is an open label, 2-arm, 1-stage, randomized controlled phase II study in patients with AJCC stage IIIB/C & -IV melanoma. At baseline tumor assessment (using total body FDG-PET/CT), patients should be free from measurable tumor lesions (according to RECISTv1.1 definitions) following prior local therapy (e.g. following surgical resection, isolated limb perfusion, radiofrequency ablation, cryotherapy, radiotherapy, electrochemotherapy, …). Patients should not have symptomatic non-measurable tumor lesions (e.g. bone metastasis, or pleural effusion), and lesions treated by prior local therapy should be free from progression. Patients should not have received any prior systemic therapy (non-experimental or experimental). * Patients will be randomized between two treatment arms (Arm-A and -B). In study Arm-A, patients will receive DC-administrations during one year following randomization. Salvage treatment by local therapies will be allowed during the study treatment in Arm-A. In study Arm-B, patients will initiate DC-administrations only after documented recurrence of the melanoma that cannot be salvaged by local therapy. * The primary endpoint of this clinical trial is to determine the rate (%) of patients who are free from macrometastases (: measurable tumor lesions and symptomatic non-measurable tumor lesions) at 1-year (= 52 weeks) after randomization. Patients treated on Arm-B will serve as a contemporary control-arm to help interpreting the outcome of patients treated in Arm-A. By design (phase II) this trial will not be powered to statistically prove a predefined difference between the two study arms (this would require a phase III design). Patients treated in Arm-B will be able to initiate immunotherapy with autologous DC at the time of recurrence that can not be salvaged by local therapy. Documentation of the anti-tumor activity and survival following DC-treatment at recurrence in Arm-B patients will be a secondary objective of this clinical trial.

Interventions

Dendritic cell therapy IV and ID

Sponsors

RIZIV
CollaboratorUNKNOWN
Universitair Ziekenhuis Brussel
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Able and willing to give written informed consent 2. Histological documentation of AJCC stage III or stage IV melanoma 3. melanoma (melanoma originating in the choroid, iris or ciliar body are not eligible) 4. baseline tumor assessment by whole-body FDG-PET/CT, patients should be free from measurable tumor lesions (RECIST (v1.1)), and free from symptomatic non-measurable tumor lesions 5. Prior local treatment of primary and metastatic tumor lesions is allowed . Treated tumor lesions should be free from progression at baseline assessment 6. Normal organ function and normal hematological parameters;laboratory parameters should be within normal range, except following laboratory parameters:HEMOGLOBIN ≥ 10 G/DL; GRANULOCYTES ≥ 1,500/µL; LYMPHOCYTES ≥ 1000/µL; PLATELETS ≥ 100,000/µL; SERUM CREATININ ≤ 2.0 MG/DL; SERUM BILIRUBIN ≤ 2.0 MG/DL; AST AND ALT ≤ 2 X THE NORMAL UPPER LIMITS; LDH ≤ 1,5X NORMAL UPPER LIMIT; CRP ≤ 1,5X NORMAL UPPER LIMIT; PROTHROMBIN TIME (PT) INTERNATIONAL NORMALIZED RATIO (INR) AND PARTIAL THROMBOPLASTIN TIME (PTT) WITHIN NORMAL LIMITS 7. Negative serology for HCV, and HIV; absence of active infection with HBV, and Syphilis; If positive results for HepB or Syphilis indicate immunity and are not indicative of active infection, the patient can enter the study. 8. Adequate venous access(to undergo leukapheresis) 9. No prior systemic therapy for melanoma 10. Full recovery from all prior therapies. A period of 4 weeks following major surgery, radiation therapy, or ILP, or any other major invasive procedure is required 11. Baseline WHO performance status of 0 or 1 12. Male and female patients ≥ 18 years 13. No need for uninterrupted therapeutic anticoagulation 14. No prior history of a serious autoimmune disorder 15. No concomitant medication with immune suppressive drugs 16. Women of childbearing potential must be using an adequate method of contraception to avoid pregnancy throughout the study and for up to 8 weeks after the study in such a manner that the risk of pregnancy is minimized.

Exclusion criteria

1. Evidence of immunodeficiency or autoimmune disease requiring medical treatment (e.g. corticosteroids or other immunosuppressive drugs).Vitiligo is not an exclusion criterion 2. Any serious acute or chronic illnesses (e.g. heart disease NYHA Class III or IV,renal-,liver- or pulmonary insufficiency) or other conditions requiring concurrent medications not allowed during this study (e.g. active chronic infections requiring antibiotics) 3. History of malignancy. Curatively treated cervical carcinoma in situ,or squamous-,or basal cell carcinoma of the skin, or subjects who have been treated and recurrence-free of other malignancies for more than 5 years following the diagnosis are eligible 4. Inability to undergo FDG-PET/CT, or MRI examination 5. Mental impairment that may compromise the ability to give informed consent and comply with the requirements of the study 6. Participation in any other clinical trial involving another investigational agent within 4 weeks prior to enrollment 7. Subject is pregnant (positive serum beta-HCG test at screening) or is currently breast-feeding, anticipates becoming pregnant/impregnating their partner during the study or within 6 months after study participation, or subject does not agree to follow acceptable methods of birth control, to avoid conception during the study and for at least 6 months after receiving the last dose of study treatment 8. Current alcohol dependence or drug abuse 9. Known hypersensitivity to the study treatment 10. Legal incapacity or limited legal capacity 11. Presence of any psychological, familial, sociological, or geographical condition potentially hampering compliance with the study protocol and follow-up schedule. 12. Signs and symptoms suggestive of transmissible spongiform encephalopathy,or family members who suffer(ed) from such.

Design outcomes

Primary

MeasureTime frameDescription
1-year disease free survival percentage1-year following recruitment datePatients will be evaluated 52 weeks following randomization for their melanoma disease status (= macro-metastases present or absent)

Secondary

MeasureTime frameDescription
safetycontinuous during the study (52weeks after start)Patients will be followed continuous during their study participation for adverse events

Countries

Belgium

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026