Evaluation of a New Vaccine Treatment for Patients With Metastatic Skin Cancer

Study Overview
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Brief Summary
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The purpose of this clinical study is to examine the safety, immunogenicity and clinical activity of the immunotherapeutic product GSK2302025A (also referred to as recPRAME + AS15 Antigen-Specific Cancer Immunotherapeutic [ASCI]) administered as a first line treatment in patients with unresectable and progressive metastatic cutaneous melanoma.

Detailed Description
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In this study, patients were to receive a maximum of 24 doses of recMAGE-A3 + AS15 according to four cycles over a period of four years. An active follow-phase (up to five years after registration into the study) was planned for all patients. This protocol summary has been impacted by protocol amendment 3, so there will no longer be an active follow-up of patients after discontinuation or completion of the study treatment. The study will end approximately 30 days after the last dose will be administered. In addition, no more biological samples will be collected for protocol research purposes. For each biological sample already collected in the scope of this study and not tested yet, testing will not be performed by default, except if a scientific rationale remains relevant. Sampling for safety monitoring as per protocol will continue.

Official Title
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Study of GSK2302025A Antigen-Specific Cancer Immunotherapeutic in Patients With Metastatic Melanoma

Conditions
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Melanoma

Intervention / Treatment
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* Biological: Immunotherapeutic GSK2302025A, different formulations


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male or female patient with histologically proven cutaneous melanoma. Phase I segment: All melanoma patients with stage IV M1b and stage IV M1c including completely resected stage IV patients but with the exception of stage IV M1c disease with serum lactate dehydrogenase > 1.5 x Upper Limit of Normal or with involvement of the Central Nervous System. Phase II segment: All melanoma patients with measurable, unresectable stage III melanoma including in-transit metastasis (with (N3) or without (N2c) nodal metastasis) and stage IV M1a melanoma. The patient should have documented progressive disease within 12 weeks of registration into the trial. Patients with resected stage IV and with stage IV M1b or M1c disease cannot be included. Written informed consent for PRAME expression screening and gene profiling on resected tumor tissue and for the complete study has been obtained from the patient prior to shipment of the sample for expression testing and prior to the performance of any other protocol-specific procedure. The patient is >= 18 years old at the time of signing the first informed consent form. The patient's tumor shows expression of the PRAME antigen as determined by RT-PCR analysis or any updated technique on fresh tissue sample. Eastern Cooperative Oncology Group performance status of 0 or 1. The patient has adequate bone marrow reserve, renal, adrenal and hepatic function as assessed by standard laboratory criteria. Female patients of non-childbearing potential may be enrolled in the study. Non-childbearing potential is defined as current tubal ligation, hysterectomy, ovariectomy or post-menopause. Female patients of childbearing potential may be enrolled in the study, if the patient: has practiced adequate contraception for 30 days prior to the study product administration, and has a negative pregnancy test on the day of administration, and has agreed to continue adequate contraception during the entire treatment period and for 2 months after the completion of the study product administration series. In the view of the investigator, the patient can and will comply with all the requirements of the protocol. Exclusion Criteria: The patient has at any time received systemic chemotherapy, (bio)-chemotherapy or CTLA-4 monoclonal antibodies for metastatic disease. The patient is scheduled to receive any other anticancer treatment, including but not limited to (bio)-chemotherapeutic or immunomodulating agents and radiotherapy. The patient has received any cancer immunotherapy containing the PRAME antigen or any cancer immunotherapy for his/her metastatic disease. The patient requires concomitant treatment (more than 7 consecutive days) with systemic corticosteroids or any other immunosuppressive agents. Use of any investigational or non-registered product (drug or vaccine) other than the study product within the 30 days preceding the first ASCI dose injection or planned use during the study period The patient has (had) previous or concomitant malignancies at other sites (including carcinoma in situ), except effectively treated non-melanoma skin cancers or carcinoma in situ of the cervix or effectively treated malignancy that has been in remission for over 5 years and is highly likely to have been cured. The patient has an allergy to any component of the study investigational product or has a history of previous allergic reactions to vaccinations. The patient has a history of confirmed adrenal dysfunction. The patient has an autoimmune disease such as, but not limited to, multiple sclerosis, lupus, and inflammatory bowel disease. The patient is known to be positive for the human immunodeficiency virus (HIV). The patient has an uncontrolled bleeding disorder. The patient has a family history of congenital or hereditary immunodeficiency. The patient has psychiatric or addictive disorders that may compromise his/her ability to give informed consent or to comply with the trial procedures. The patient has other concurrent severe medical problems, unrelated to the malignancy, that would significantly limit full compliance with the study or expose the patient to unacceptable risk. For female patients: the patient is pregnant or lactating.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: GSK2302025A Cohort 1<br>Male or female patients with histologically proven cutaneous melanoma received the investigational Low-Dose (LD) adjuvanted GSK2302025A immunotherapeutic vaccine, intramuscularly into the deltoid or lateral region of the thigh, with alternation on right or left side at each succeeding injection. Subjects received a total of 24 administrations in 4 cycles: 6 administrations given at 2 weeks intervals in cycle 1, 6 administrations given at 3 weeks intervals in cycle 2, 4 administrations given at 6 weeks intervals in cycle 3 and 4 administrations given at 3 months interval in cycle 4. | Biological: Immunotherapeutic GSK2302025A, different formulations<br>* Intramuscular administration<br>* Other names: PRAME ASCI;|
| Experimental: GSK2302025A Cohort 2<br>Male or female patients with histologically proven cutaneous melanoma received the investigational Middle-Dose (MD) adjuvanted GSK2302025A immunotherapeutic vaccine, intramuscularly into the deltoid or lateral region of the thigh, with alternation on right or left side at each succeeding injection. Subjects received a total of 24 administrations in 4 cycles: 6 administrations given at 2 weeks intervals in cycle 1, 6 administrations given at 3 weeks intervals in cycle 2, 4 administrations given at 6 weeks intervals in cycle 3 and 4 administrations given at 3 months interval in cycle 4. | Biological: Immunotherapeutic GSK2302025A, different formulations<br>* Intramuscular administration<br>* Other names: PRAME ASCI;|
| Experimental: GSK2302025A Cohort 3<br>Male or female patients with histologically proven cutaneous melanoma received the investigational High-Dose (HD) adjuvanted GSK2302025A immunotherapeutic vaccine, intramuscularly into the deltoid or lateral region of the thigh, with alternation on right or left side at each succeeding injection. Subjects received a total of 24 administrations in 4 cycles: 6 administrations given at 2 weeks intervals in cycle 1, 6 administrations given at 3 weeks intervals in cycle 2, 4 administrations given at 6 weeks intervals in cycle 3 and 4 administrations given at 3 months interval in cycle 4. | Biological: Immunotherapeutic GSK2302025A, different formulations<br>* Intramuscular administration<br>* Other names: PRAME ASCI;|
| Experimental: GSK2302025A Cohort 4<br>In Phase 2 of the study subjects received the optimal investigational dose-level identified in Phase 1. Patients received a treatment consisting of 24 injections of the experimental GSK2302025A immunotherapeutic. | Biological: Immunotherapeutic GSK2302025A, different formulations<br>* Intramuscular administration<br>* Other names: PRAME ASCI;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Patients With Dose-limiting Toxicity (Phase I) | The dose-limiting toxicities (DLT) were defined as follows: •An Antigen-Specific Cancer Immunotherapeutic (ASCI) related or possibly ASCI related grade 3 or higher toxicity. Grade 3 myalgia, arthralgia, headache, fever, rigors/chills and fatigue (including lethargy, malaise and asthenia) persisting for 48 hours despite therapy. •An ASCI related or possibly ASCI related grade 2 or higher allergic reaction occurring within 24 hours following the ASCI administration. •An ASCI related or possibly ASCI related decrease in renal function, with a creatinine clearance lower than (<) 40 milliliters per minute (mL/min). •An ASCI-related or possibly ASCI-related symptomatic and confirmed adrenal insufficiency. The grading used was defined according to the Common Terminology Criteria for Adverse Events (CTCAE) version 4.0: Grade 3 DLT = severe DLT. Related = DLT considered by investigator as possibly related to product administration. | During the study treatment (up to Year 4), for all patients | 
| Percentage of Patients With Anti-PReferentially Expressed Antigen of MElanoma (Anti-PRAME) Humoral Immune Response (Phase I) | A seronegative/seropositive patient for anti-PRAME antibodies was a patient with antibody concentration lower (<)/ higher than or equal to (≥) cut-off level. Humoral immune response was defined as a) if baseline concentration < cut-off level: post treatment concentration ≥ cut-off level, or b) if baseline concentration ≥ cut-off level: post treatment concentration at least twice the baseline value. Cut-off values for seropositivity (by enzyme-linked immunosorbent assay [ELISA]) were 12 ELISA Units per milliliter (EL.U/mL). | After the administration of dose 4, at Week 8 | 
| Number of Patients With Best Overall Response to Study Treatment (Phase II) | The best overall response is the best response recorded from the start of the treatment until disease progression (taking as reference for progressive disease the smallest measurements recorded since the treatment started). In general the patient's best response assignment depended on the achievement of both measurement and confirmation criteria. The best overall response includes the complete response (CR) defined as disappearance of all targeted/non-targeted lesions and partial response (PR) defined as at least 30% decrease in the sum of longest diameter (LD) of target lesions taking as reference the baseline sum LD and persistence of one or more non-targeted lesion(s). | During the entire study period - up to Year 4 + 1 month post last study treatment administration | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Patients With Any Unsolicited Adverse Events (AEs), by Maximum Grading | An unsolicited AE covers any untoward medical occurrence in a clinical investigation subject temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product and reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms. Any was defined as the occurrence of any unsolicited AE regardless of intensity grade or relation to vaccination. The grading to be used by the investigators for the assessment of the severity of adverse events (AEs) was defined as the Common Terminology Criteria for Adverse Events (CTCAE), Version 4.0 (Grade 1 = mild; Grade 2 = moderate; Grade 3 = severe or medically significant; Grade 4 = life-threatening; Grade 5 = death related to AE). Adverse Events were coded to the preferred term (PT) level by means of the Medical Dictionary for Regulatory Activities (MedDRA). | During the entire study period - up to Year 4 + 1 month post last study treatment administration | 
| Number of Patients With Serious Adverse Events (SAEs), by Maximum Grading | Serious adverse events (SAEs) assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization or result in disability/incapacity. The grading to be used by the investigators for the assessment of the severity of adverse events (AEs) was defined as the Common Terminology Criteria for Adverse Events (CTCAE), Version 4.0 (Grade 1 = mild; Grade 2 = moderate; Grade 3 = severe or medically significant; Grade 4 = life-threatening; Grade 5 = death related to AE). SAEs were coded to the preferred term (PT) level by means of the Medical Dictionary for Regulatory Activities (MedDRA). | During the entire study period - up to Year 4 + 1 month post last study treatment administration | 
| Number of Patients With Laboratory Abnormalities Versus Baseline, by Maximum Grading | Laboratory abnormalities belong to hematological and biochemical parameters such as: activated partial thromboplastin time prolonged [APTTP], alanine aminotransferase increased [ALT/I], alkaline phoshatase increased [APH/I], anemia [AN], asparatate aminostransferase increased [AST/I], blood bilirubin increased [BB/I], creatinine increased [CRE/I], gamma glumatymtransferase increased [GGT/I], hemoglobin increased [Hgb/I], hypoalbuminemia [HYP], lymphocyte count decreased [LYMC/D], lymphocyte count increased [LYMC/I], neutrophil count decreased [ NEUC/D], platelet count decreased [PLA/D], white blood cell decreased [WBC/D]. Parameter grades (G0,1,2,3,4,Unknown) were compared to each baseline parameter grade (GUnknown,0,1,2,3), as defined by the Common Terminology Criteria for Adverse Events (CTCAE), version 4.0 of May 28, 2009 [http://evs.nci.nih.gov/ftp1/CTCAE]. This endpoint presents values for [APTTP] grading versus baseline parameter grading. | During the entire study period - up to Year 4 + 1 month post last study treatment administration | 
| Number of Patients With Laboratory Abnormal Results Versus Baseline, by Maximum Grading | Laboratory abnormalities belong to hematological and biochemical parameters such as: activated partial thromboplastin time prolonged [APTTP], alanine aminotransferase increased [ALT/I], alkaline phoshatase increased [APH/I], anemia [AN], asparatate aminostransferase increased [AST/I], blood bilirubin increased [BB/I], creatinine increased [CRE/I], gamma glumatymtransferase increased [GGT/I], hemoglobin increased [Hgb/I], hypoalbuminemia [HYP], lymphocyte count decreased [LYMC/D], lymphocyte count increased [LYMC/I], neutrophil count decreased [ NEUC/D], platelet count decreased [PLA/D], white blood cell decreased [WBC/D]. Parameter grades (G0,1,2,3,4,Uknown) were compared to each baseline parameter grade (GUnknown,0,1,2,3), as defined by the Common Terminology Criteria for Adverse Events (CTCAE), version 4.0 of May 28, 2009 [http://evs.nci.nih.gov/ftp1/CTCAE]. This endpoint presents values for [ALT/I] and [APH/I] grading versus baseline parameter grading. | During the entire study period - up to Year 4 + 1 month post last study treatment administration | 
| Number of Patients With Hematological and Biochemical Abnormalities Versus Baseline, by Maximum Grading | Laboratory abnormalities belong to hematological and biochemical parameters such as: activated partial thromboplastin time prolonged [APTTP], alanine aminotransferase increased [ALT/I], alkaline phoshatase increased [APH/I], anemia [AN], asparatate aminostransferase increased [AST/I], blood bilirubin increased [BB/I], creatinine increased [CRE/I], gamma glumatymtransferase increased [GGT/I], hemoglobin increased [Hgb/I], hypoalbuminemia [HYP], lymphocyte count decreased [LYMC/D], lymphocyte count increased [LYMC/I], neutrophil count decreased [ NEUC/D], platelet count decreased [PLA/D], white blood cell decreased [WBC/D]. Parameter grades (G0,1,2,3,4,Uknown) were compared to baseline parameter grades (GUnknown,0,1,2,3), as defined by the Common Terminology Criteria for Adverse Events (CTCAE), version 4.0 of May 28, 2009 [http://evs.nci.nih.gov/ftp1/CTCAE]. This endpoint presents values for [AN], [AST/I] and [CRE/I] grading versus baseline parameter grading. | During the entire study period - up to Year 4 + 1 month post last study treatment administration | 
| Number of Patients With Laboratory Hematological and Biochemical Abnormalities Versus Baseline, by Maximum Grading | Laboratory abnormalities belong to hematological and biochemical parameters such as: activated partial thromboplastin time prolonged [APTTP], alanine aminotransferase increased [ALT/I], alkaline phoshatase increased [APH/I], anemia [AN], asparatate aminostransferase increased [AST/I], blood bilirubin increased [BB/I], creatinine increased [CRE/I], gamma glumatymtransferase increased [GGT/I], hemoglobin increased [Hgb/I], hypoalbuminemia [HYP], lymphocyte count decreased [LYMC/D], lymphocyte count increased [LYMC/I], neutrophil count decreased [ NEUC/D], platelet count decreased [PLA/D], white blood cell decreased [WBC/D]. Parameter grades (G0,1,2,3,4,Uknown) were compared to baseline parameter grades (GUnknown,0,1,2,3), as defined by the Common Terminology Criteria for Adverse Events (CTCAE), version 4.0 of May 28, 2009 [http://evs.nci.nih.gov/ftp1/CTCAE]. This endpoint presents values for [CRE/I] and [GGT/I] grading versus baseline parameter grading. | During the entire study period - up to Year 4 + 1 month post last study treatment administration | 
| Number of Patients With Lab Hematological and Biochemical Abnormalities Versus Baseline, by Maximum Grading | Laboratory abnormalities belong to hematological and biochemical parameters such as: activated partial thromboplastin time prolonged [APTTP], alanine aminotransferase increased [ALT/I], alkaline phoshatase increased [APH/I], anemia [AN], asparatate aminostransferase increased [AST/I], blood bilirubin increased [BB/I], creatinine increased [CRE/I], gamma glumatymtransferase increased [GGT/I], hemoglobin increased [Hgb/I], hypoalbuminemia [HYP], lymphocyte count decreased [LYMC/D], lymphocyte count increased [LYMC/I], neutrophil count decreased [ NEUC/D], platelet count decreased [PLA/D], white blood cell decreased [WBC/D]. Parameter grades (G0,1,2,3,4,Uknown) were compared to each baseline parameter grade (GUnknown,0,1,2,3), as defined by the Common Terminology Criteria for Adverse Events (CTCAE), version 4.0 of May 28, 2009 [http://evs.nci.nih.gov/ftp1/CTCAE]. This endpoint presents values for [Hgb/I] and [HYP] grading versus baseline parameter grading. | During the entire study period - up to Year 4 + 1 month post last study treatment administration | 
| Number of Patients With Abnormal Hematological and Biochemical Results Versus Baseline, by Maximum Grading | Laboratory abnormalities belong to hematological and biochemical parameters such as: activated partial thromboplastin time prolonged [APTTP], alanine aminotransferase increased [ALT/I], alkaline phoshatase increased [APH/I], anemia [AN], asparatate aminostransferase increased [AST/I], blood bilirubin increased [BB/I], creatinine increased [CRE/I], gamma glumatymtransferase increased [GGT/I], hemoglobin increased [Hgb/I], hypoalbuminemia [HYP], lymphocyte count decreased [LYMC/D], lymphocyte count increased [LYMC/I], neutrophil count decreased [ NEUC/D], platelet count decreased [PLA/D], white blood cell decreased [WBC/D]. Parameter grades (G0,1,2,3,4,Uknown) were compared to each baseline parameter grade (GUnknown,0,1,2,3), as defined by the Common Terminology Criteria for Adverse Events (CTCAE), version 4.0 of May 28, 2009 [http://evs.nci.nih.gov/ftp1/CTCAE]. This endpoint presents values for [LYMC/D] and [LYMC/I] grading versus baseline parameter grading. | During the entire study period - up to Year 4 + 1 month post last study treatment administration | 
| Number of Patients With Abnormal Hematological and Biochemical Laboratory Results Versus Baseline, by Maximum Grading | Laboratory abnormalities belong to hematological and biochemical parameters such as: activated partial thromboplastin time prolonged [APTTP], alanine aminotransferase increased [ALT/I], alkaline phoshatase increased [APH/I], anemia [AN], asparatate aminostransferase increased [AST/I], blood bilirubin increased [BB/I], creatinine increased [CRE/I], gamma glumatymtransferase increased [GGT/I], hemoglobin increased [Hgb/I], hypoalbuminemia [HYP], lymphocyte count decreased [LYMC/D], lymphocyte count increased [LYMC/I], neutrophil count decreased [NEUC/D], platelet count decreased [PLA/D], white blood cell decreased [WBC/D]. Parameter grades (G0,1,2,3,4,Uknown) were compared to each baseline parameter grades (GUnknown,0,1,2,3), as defined by the Common Terminology Criteria for Adverse Events (CTCAE), version 4.0 of May 28, 2009 [http://evs.nci.nih.gov/ftp1/CTCAE]. This endpoint presents values for [NEUC/D], [PLA/D] and [WBC/D] grading versus baseline parameter grading. | During the entire study period - up to Year 4 + 1 month post last study treatment administration | 
| Percentage of Patients With Anti-PRAME Cellular (T-cell) Response (Phase I) | Cellular response was defined as: Geometric Mean Response (GMR) above the 2.68 cut-off value and at least a four-fold increase of PRAME- specific Cluster of Differentiation (CD) 4/8 T-cells. Considering that 2 studies failed to demonstrate clinical efficacy of recombinant protein based cancer vaccines, GSK decided in 2014 to stop the development and to stop recruitment in all the ongoing clinical studies. The decision was made to end the study (i.e., stopping patient enrollment, follow-ups, sample collection and analysis of samples for research purposes). Patients still on treatment at the time of the protocol amendment were offered to continue the administration of the study treatment until the last dose or until recurrence, whichever came first, or until the patient or the investigator decided to stop the study treatment. No further active protocol visit/contact was performed except for the concluding visit at Week 199, 30 days after the last treatment administration. | Up to Data Lock Point at Week 8 | 
| Number of Patients With Anti-PRAME Humoral Immune Response (Phase I & II) | A seropositive patient was a patient whose anti-PRAME antibody concentration was greater than or equal to (≥) the assay cut-off value of 12 ELISA units per milliliter (EL.U/mL). A seronegative patient was defined as a patient whose pre-treatment antibody concentration was below (<) the cut-off value. An anti-PRAME antibody responder was defined as: For a seronegative patient: a post-treatment antibody concentration ≥ the cut-off value; For a seropositive patient: a post-treatment antibody concentration ≥ twice the pre-treatment antibody concentration. | At Weeks 0, 4, 8, 10, 12, 29, 51, 75, 99, 123, 147 and conclusion visit at 30 days post last treatment administration (Week 199) for each patient | 
| Number of Patients With Stable Disease (SD), Progressive Disease (PD), Mixed Response (MR) (Phase I & II) | Tumor response was assessed by the Response Evaluation Criteria In Solid Tumors (RECIST), where stable disease for target lesions refers to neither enough shrinkage to qualify for complete response nor sufficient increase to qualify for progressive disease taking as references the smallest sum longest diameter (LD) since the treatment started. For non-targeted lesions it refers to persistence of one or more non-target lesions. Progressive disease is related to a clear increase of diameters of lesions taking as references the smallest diameters recorded since the treatment started OR the appearance of one or more new lesions OR both of these. | At 30 days after the last treatment administration for each patient (Week 199) | 
| Number of Patients With Best Overall Response, Including Mixed Response (MxR) and Slow Progressive Disease (SPD) Criteria (Phase I & II) | Tumor response was assessed by the RECIST criteria, where SD for target lesions refers to neither enough shrinkage to qualify for CR nor sufficient increase to qualify for PD taking as references the smallest sum longest diameter (LD) since the treatment started. For non-targeted lesions it refers to persistence of one or more nom-target lesions. Progressive disease is related to a clear increase of diameters of lesions taking as references the smallest diameters recorded since the treatment started OR the appearance of one or more new lesions OR both of these. Mixed response is defined as at least 30% decrease in the LD occurring in at least one target lesion recorded and measured at baseline. Such response occurring in otherwise SD or PD status of the LD of target lesions were classified as SD with target lesion regression or PD with target lesion regression, respectively. New lesion(s) in otherwise PR status of the LD of target lesions were PR with new lesion. | At 30 days after the last treatment administration for each patient (Week 199) | 
| Anti-Protein D Humoral Response (Phase I & II) | Analysis of immunogenicity for anti-PD antibodies was not performed, following negative results to the NCT00480025 study which assessed another study product from same technology platform. For this study, the main analysis of the dose-escalation Phase I segment was performed according to protocol when all patients enrolled in the Phase I segment had received the first 4 treatment doses and had completed Week 8. The main analysis of the Phase II segment was performed according to protocol when all patients had either completed the treatment until the end of Cycle 3 or had been withdrawn from the study treatment, with the exception of anti-PD antibody responses and PRAME-specific cellular responses which were not yet performed. All samples that had been collected but not yet tested were not tested by default, except if a scientific rationale remained relevant. | At Week 0, 4, 8, 12, 29, 51, 75, 99, 123, 147, 30 days after the last treatment administration for each patient (Week 199), with follow-up, 3, 6, 9 and 12 months after concluding visit | 
| Anti-Cytosine Phosphate Guanosine Oligodeoxynucleotide (CpG) Humoral Response (Phase I & II) | Analysis of immunogenicity for anti-CpG antibodies was not performed, following negative results to the NCT00480025 study which assessed another study product from same technology platform. For this study, the main analysis of the dose-escalation Phase I segment was performed according to protocol when all patients enrolled in the Phase I segment had received the first 4 treatment doses and had completed Week 8. The main analysis of the Phase II segment was performed according to protocol when all patients had either completed the treatment until the end of Cycle 3 or had been withdrawn from the study treatment, with the exception of anti-CpG antibody responses and PRAME-specific cellular responses which were not yet performed. All samples that had been collected but not yet tested were not tested by default, except if a scientific rationale remained relevant. | At Week 0, 4, 8, 12, 29, 51, 75, 99, 123, 147, 30 days after the last treatment administration for each patient (Week 199), with follow-up, 3, 6, 9 and 12 months after concluding visit | 
| Time to Treatment Failure, Progression Free Survival and Overall Survival (Phase I & II) | Time to treatment failure (TTF) was defined as the time from first administration of study product until the date of the last administration of the product, irrespective of the reason for study treatment discontinuation. Progression-free survival (PFS) was defined as the time from first adminsitration of study product until the date of either disease progression or death (for whatever reason), whichever comes first. Overall survival (OS) was defined as the time from first administration of study product until death. | Up to concluding visit, at Week 199 | 
| Duration of Response for Patients With CR, PR and SD or SD/PR Status (Phase II) | This analysis was not performed following negative results to the NCT00480025 study which assessed another study product from same technology platform. For this study, the main analysis of the dose-escalation Phase I segment was performed according to protocol when all patients enrolled in the Phase I segment had received the first 4 treatment doses and had completed Week 8. The main analysis of the Phase II segment was performed according to protocol when all patients had either completed the treatment until the end of Cycle 3 or had been withdrawn from the study treatment, with the exception of anti-CpG/anti-PD antibody responses and PRAME-specific cellular responses which were not yet performed. All samples that had been collected but not yet tested were not tested by default, except if a scientific rationale remained relevant. | Up to concluding visit, at Week 199 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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PRAME, Cancer immunotherapeutic, Malignant melanoma, ASCI (Antigen-Specific Cancer Immunotherapeutic)