Study of Pembrolizumab (MK-3475) Versus Chemotherapy in Participants With Advanced Melanoma (MK-3475-002/P08719/KEYNOTE-002)

Malignant Melanoma Clinical Trial

Official title:

Randomized, Phase II Study of Pembrolizumab (MK-3475) Versus Chemotherapy in Patients With Advanced Melanoma (KEYNOTE 002)

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT01704287
• Other study ID #: P08719
• Secondary ID: MK-3475-0022012-
• Status: Completed
• Phase: Phase 2
• Start date: November 20, 2012
• Est. completion date: January 31, 2019

Study information

• Verified date: April 2020
• Source: Merck Sharp & Dohme Corp.
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This study was conducted to compare survival using pembrolizumab (SCH 900475, MK-3475) or standard chemotherapy in participants with advanced melanoma (MEL) who had progressed after prior therapy.

Initial Treatment Period:

Participants were initially randomized to receive either low-dose (2 mg/kg) pembrolizumab, higher dose (10 mg/kg) pembrolizumab or Investigator-choice chemotherapy (ICC). The four standard chemotherapy choices were: carboplatin + paclitaxel, paclitaxel alone, dacarbazine, or temozolomide. The randomization to either pembrolizumab or ICC was conducted in an open-label fashion.

The starting pembrolizumab dose was initially blinded to Investigators and participants until Amendment 03. With Amendment 03, all ongoing pembrolizumab participants were to be treated with open label, fixed dose pembrolizumab 200 mg, instead of a weight-based dosing of pembrolizumab.

Switch-to-Pembrolizumab Treatment Period:

Participants who were initially randomized to receive ICC and experienced progressive disease (PD) may have been eligible to switch to receiving pembrolizumab provided they met protocol-specified requirements for switching. Qualified participants were re-randomized to receive either pembrolizumab 2 mg/kg or pembrolizumab 10 mg/kg in a double-blind fashion. Participants who qualified to switch to pembrolizumab must have completed a washout period of ≥28 days from last dose of chemotherapy before receiving pembrolizumab. With Amendment 03, all switched-to-pembrolizumab participants were to be treated with open-label, fixed dose pembrolizumab 200 mg instead of a weight-based dosing of pembrolizumab.

Description:

Two interim and one final statistical analyses were planned for and conducted during this study:

• Interim Analysis 1 (futility analysis),

• Interim Analysis 2 (~18 months into study): database cutoff date 12-May-2014, and

• Final Analysis (~36 months into study): database cutoff date 16-Nov-2015. The End of Trial Analysis for the study was conducted at ~75 months into the study: database cutoff date 31-Jan-2019.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 540
• Est. completion date: January 31, 2019
• Est. primary completion date: November 16, 2015
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Histologically or cytologically confirmed diagnosis of unresectable Stage III or metastatic MEL not amenable to local therapy

• Participants must be refractory to ipilimumab

• Participants with BRAF gene mutant melanoma must have had a prior treatment regimen that included vemurafenib, dabrafenib, or an approved BRAF gene and/or mitogen-activated protein kinase (MEK) protein inhibitor

• Must consent to allow correlative studies; must provide a newly obtained tissue/biopsy specimen (or specimen obtained within 60 days of consenting)

• Radiographically measurable disease

• Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1

Exclusion Criteria:

• Chemotherapy, radiation therapy, or biological cancer therapy within 4 weeks prior to the first dose of study drug, or not recovered from the AEs due to cancer therapies administered more than 4 weeks earlier

• Disease progression within 24 weeks of last dose of ipilimumab

• Participating or has participated in a study of an investigational agent or using an investigational device within 30 days of the first dose of study drug

• Expected to require any other form of systemic or localized antineoplastic therapy while on study

• Chronic systemic steroid therapy within 2 weeks before the planned date for first dose randomized treatment or on any other form of immunosuppressive medication

• Known history of any other than the current malignancy excepting adequately treated basal or squamous cell carcinoma of the skin, superficial bladder cancer, in situ cervical cancer, breast cancer, or other in situ cancers

• Known active central nervous system (CNS) metastases and/or carcinomatous meningitis

• Active autoimmune disease or a history of autoimmune disease or syndrome that requires systemic steroids or immunosuppressive agents

• Prior treatment with any other anti-programmed cell death (PD) agent

• Active infection requiring systemic therapy

• Known history of Human Immunodeficiency Virus (HIV)

• Active Hepatitis B or Hepatitis C

• Regular user (including recreational use of) illicit drugs or had a recent history (within the last year) of substance abuse (including alcohol)

• Pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the study through 120 days after last dose of study drug

Related Conditions & MeSH terms

• Malignant Melanoma
• Melanoma

Intervention

Biological:
• Pembrolizumab
IV infusion

Drug:
• Carboplatin
Carboplatin per institutional standard
• Paclitaxel
Paclitaxel per institutional standard
• Dacarbazine
Dacarbazine per institutional standard
• Temozolomide
Temozolomide per institutional standard

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
Merck Sharp & Dohme Corp.

References & Publications (2)

Hamid O, Puzanov I, Dummer R, Schachter J, Daud A, Schadendorf D, Blank C, Cranmer LD, Robert C, Pavlick AC, Gonzalez R, Hodi FS, Ascierto PA, Salama AKS, Margolin KA, Gangadhar TC, Wei Z, Ebbinghaus S, Ibrahim N, Ribas A. Final analysis of a randomised t — View Citation

Ribas A, Puzanov I, Dummer R, Schadendorf D, Hamid O, Robert C, Hodi FS, Schachter J, Pavlick AC, Lewis KD, Cranmer LD, Blank CU, O'Day SJ, Ascierto PA, Salama AK, Margolin KA, Loquai C, Eigentler TK, Gangadhar TC, Carlino MS, Agarwala SS, Moschos SJ, Sosman JA, Goldinger SM, Shapira-Frommer R, Gonzalez R, Kirkwood JM, Wolchok JD, Eggermont A, Li XN, Zhou W, Zernhelt AM, Lis J, Ebbinghaus S, Kang SP, Daud A. Pembrolizumab versus investigator-choice chemotherapy for ipilimumab-refractory melanoma (KEYNOTE-002): a randomised, controlled, phase 2 trial. Lancet Oncol. 2015 Aug;16(8):908-18. doi: 10.1016/S1470-2045(15)00083-2. Epub 2015 Jun 23. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Progression-free Survival (PFS) - Initial Treatment Period	PFS was defined as the time from randomization to the first documented progressive disease (PD) or death due to any cause, whichever occurred first. Per Response Criteria in Solid Tumors version 1.1 (RECIST 1.1), PD was defined as at least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study. In addition to the relative increase of 20%, the sum must have also demonstrated an absolute increase of at least 5 mm. Note: The appearance of one or more new lesions was also considered PD. Analysis of PFS was based on an integrated radiology and oncology (IRO) assessment and was not planned or conducted for the switch-to-pembrolizumab treatment groups. Median PFS based on the product limit (Kaplan-Meier) method for censored data is presented. This was the final analysis for PFS.	Up to approximately 36 months (Through Final Analysis database cutoff date of 16-Nov-2015)
Primary	Interim Overall Survival (OS) - Initial Treatment Period	OS was defined as the time from randomization to death due to any cause. Analysis of OS was not planned or conducted for the switch-to-pembrolizumab treatment groups. Median OS based on the product-limit (Kaplan-Meier) method for censored data is presented. This was the interim analysis for OS.	Up to approximately 36 months (Through Final Analysis database cutoff date of 16-Nov-2015)
Primary	Final Overall Survival (OS) - Initial Treatment Period	OS was defined as the time from randomization to death due to any cause. Analysis of OS was not planned or conducted for the switch-to-pembrolizumab treatment groups. Median OS duration based on the product-limit (Kaplan-Meier) method for censored data is presented. This was the final analysis for OS.	Up to approximately 75 months (Through End of Trial Analysis database cutoff date of 31-Jan-2019)
Secondary	Final Overall Survival (OS) By Programmed Cell Death-Ligand 1 (PD-L1) Tumor Expression Status - Initial Treatment Period	OS was defined as the time from randomization to death due to any cause. Participants with an Allred Proportion Score (APS) =2 (membranous staining in =1% of cells for PD-L1) were considered to be PD-L1 Positive and participants with an APS of 0 or 1 were considered to be PD-L1 Negative. Analysis of OS was not planned or conducted for the switch-to-pembrolizumab treatment groups. Median OS duration based on the product-limit (Kaplan-Meier) method for censored data by PD-L1 tumor expression status is presented.	Up to approximately 75 months (Through End of Trial Analysis database cutoff date of 31-Jan-2019)
Secondary	Overall Response Rate (ORR) - Initial Treatment Period	ORR was defined as the percentage of participants who had a Complete Response (CR: Disappearance of all target lesions) or a Partial Response (PR: At least a 30% decrease in the sum of diameters of target lesions) as assessed using RECIST 1.1. Analysis of ORR was not planned or conducted for the switch-to-pembrolizumab treatment groups. The percentage of participants who experienced a CR or PR is presented. This was the final analysis for ORR.	Up to approximately 36 months (Through Final Analysis database cutoff date of 16-Nov-2015)
Secondary	Best Overall Response (BOR) - Initial Treatment Period	BOR was assessed by independent radiology review using RECIST 1.1 and was recorded from randomization until the last imaging assessment in this period. Response categories included: Complete Response (CR): disappearance of all target lesions; Partial Response (PR): at least a 30% decrease in the sum of diameters of target lesions; Progressive Disease (PD): at least a 20% increase in the sum of diameters of target lesions; and Stable Disease (SD): neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD. BOR for the Initial Treatment Period was based on IRO. BOR for participants during the Initial Treatment Period is presented.	Up to approximately 36 months (Through Final Analysis database cutoff date of 16-Nov-2015)
Secondary	Best Overall Response (BOR) - Switch-to-Pembrolizumab Treatment Period	The BOR was assessed using RECIST 1.1 and was recorded from the start of the second line of study drug (pembrolizumab) until the last imaging assessment in this period. Response categories included: Complete Response (CR): disappearance of all target lesions; Partial Response (PR): at least a 30% decrease in the sum of diameters of target lesions; Progressive Disease (PD): at least a 20% increase in the sum of diameters of target lesions; and Stable Disease (SD): neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD. For the switch-to-pembrolizumab treatment groups, BOR was based on independent review committee (IRC) assessment. The BOR for switched-to pembrolizumab treatment groups is presented.	Up to approximately 36 months (Through Final Analysis database cutoff date of 16-Nov-2015)
Secondary	Duration of Response (DOR) - Initial Treatment Period	For participants who demonstrated a confirmed response (Complete Response [CR]: disappearance of all target lesions or Partial Response [PR]: =30% decrease in the sum of diameters of target lesions) per RECIST 1.1, DOR was defined as the time from first documented evidence of CR or PR until disease progression or death. DOR for participants who had not progressed or died at the time of analysis was to be censored at the date of their last tumor assessment. DOR analysis was based on IRO assessment. Analysis of DOR was not planned or analyzed for the switch-to-pembrolizumab treatment groups. Median DOR for participants who demonstrated a confirmed response is presented.	Up to approximately 36 months (Through Final Analysis database cutoff date of 16-Nov-2015)
Secondary	Number of Participants Who Experienced an Adverse Event (AE) - Overall Study	An AE was defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of study drug, whether or not considered related to the use of the product. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a pre-existing condition which was temporally associated with the use of study drug, was also an AE. Participants were included in the treatment group in which an AE was experienced. The number of participants who experienced at least one AE is presented.	Up to approximately 75 months (Through End of Trial Analysis database cutoff date of 31-Jan-2019)
Secondary	Number of Participants Who Discontinued Study Drug Due to an Adverse Event (AE) - Overall Study	An AE was defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the study drug, whether or not considered related to the use of the product. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a pre-existing condition which is temporally associated with the use of study drug, was also an AE. The number of participants who discontinued study drug due to an AE is presented.	Up to approximately 75 months (Through End of Trial Analysis database cutoff date of 31-Jan-2019)

External Links

•   Merck Oncology Clinical Trials Information