Study of Vibostolimab Alone and in Combination With Pembrolizumab in Advanced Solid Tumors (MK-7684-001) ( KEYVIBE-001)

Sponsor
Merck Sharp & Dohme LLC
Study ID
NCT02964013
Phase
PHASE1
Status
Completed

Conditions

  • Neoplasms

Eligibility Criteria

Sex
ALL
Age
18 Years - N/A
Healthy Volunteers
Not accepted

Interventions

  • vibostolimab — BIOLOGICAL
    Administered as an intravenous (IV) infusion on Day 1 of 21-day infusion Cycles 1-35
  • pembrolizumab — BIOLOGICAL
    Administered as an IV infusion on Day 1 of 21-day infusion Cycles 1-35
  • pemetrexed — DRUG
    Administered as an IV infusion on Day 1 of 21-day infusion Cycles 1-35
  • carboplatin — DRUG
    Administered as an IV infusion on Day 1 of 21-day infusion Cycles 1-4
  • pembrolizumab/vibostolimab coformulation — BIOLOGICAL
    Administered as an IV infusion on Day 1 of 21-day infusion Cycles 1-35
  • cisplatin — DRUG
    Administered as an IV infusion on Day 1 of 21-day infusion Cycles 1-4
  • etoposide — DRUG
    Administered as an IV infusion on Days 1-3 of 21-day infusion Cycles 1-4

Study Details

This is a safety, efficacy, and pharmacokinetics (PK) study of vibostolimab (MK-7684) as monotherapy and in combination with pembrolizumab (MK-3475) or pembrolizumab plus pemetrexed and carboplatin in adults with metastatic solid tumors for which there is no available therapy that is expected to convey clinical benefit. Part A of this study is a dose escalation and confirmation phase to estimate the recommended Phase 2 dose (RPTD) for vibostolimab monotherapy or in combination with pembrolizumab, pemetrexed, and carboplatin. Part A will also evaluate the anti-tumor activity of vibostolimab in combination with pembrolizumab plus pemetrexed and carboplatin in participants with non-small cell lung cancer (NSCLC) and vibostolimab (at two dose levels) in combination with pembrolizumab in Japanese participants with gastric cancer. Part B will evaluate the anti-tumor activity of vibostolimab at the RPTD when used as monotherapy and in combination with pembrolizumab in participants with advanced solid tumors in a non-randomized study design. Part B will also evaluate 2 doses of vibostolimab in combination with pembrolizumab in participants with programmed death 1 (PD-1) treatment naïve cancer using a 1:1 randomized study design. Part B is expanded with Amendment 11 to include an additional arm that will compare the safety and PK of a fixed dose of pembrolizumab/vibostolimab coformulation (MK-7684A) to vibostolimab in combination with pembrolizumab administered as separate intravenous infusions. Part A is expanded with Amendment 12 to include an additional arm that will compare the safety and PK of vibostolimab plus pembrolizumab plus the investigator's choice of platinum agent (carboplatin or cisplatin), and etoposide. Part B is expanded with Amendment 12 to include evaluation of efficacy of vibostolimab plus pembrolizumab plus the investigator's choice of platinum agent (carboplatin or cisplatin), and etoposide and efficacy of pembrolizumab/vibostolimab coformulation in participants from mainland China. The primary hypotheses are that vibostolimab administered as monotherapy or in combination with pembrolizumab is safe and tolerable when administered at the RPTD and that pembrolizumab/vibostolimab coformulation is safe and tolerable when administered as a fixed dose.

Key Dates

Start date
Dec 13, 2016
Status verified
Sep 2025
Primary completion
Jul 24, 2024
Completion
Jul 24, 2024

Study Design

Enrollment
474 participants (actual)
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT

Arms

  • Experimental: vibostolimab
    During an initial dose evaluation phase, participants will receive Dose A, B, C, D, E, or F of vibostolimab on Day 1 of each 21-day infusion cycle (for a maximum of 35 cycles) until the RPTD has been established. The RPTD will be established based on the number of dose limiting toxicities (DLTs) at each dose level. Once the RPTD is established, participants will continue receiving the RPTD of vibostolimab on Day 1 of each 21-day infusion cycle until the 35-cycle limit is reached.
  • Experimental: vibostolimab + pembrolizumab
    During an initial dose evaluation phase, participants will receive Dose A, B, C, D, E, or F of vibostolimab in combination with 200 mg pembrolizumab on Day 1 of each 21-day infusion cycle (for a maximum of 35 cycles) until the RPTD of vibostolimab has been established. The RPTD will be established based on the number of DLTs at each dose level. Once the RPTD of vibostolimab is established, participants will continue receiving the RPTD of vibostolimab in combination with 200 mg pembrolizumab on Day 1 of each 21-day infusion cycle until the 35-cycle limit is reached.
  • Experimental: Advanced solid tumor cohort
    Participants will receive the RPTD of vibostolimab monotherapy or the RPTD of vibostolimab in combination with 200 mg pembrolizumab on Day 1 of each 21-day infusion cycle until the 35-cycle limit is reached.
  • Experimental: Randomized dose 1 comparison cohort
    Participants will be randomized to receive a fixed dose (Dose 1) of vibostolimab in combination with 200 mg pembrolizumab on Day 1 of each 21-day infusion cycle until the 35-cycle limit is reached.
  • Experimental: Randomized dose 2 comparison cohort
    Participants will be randomized to receive a fixed dose (Dose 2) of vibostolimab in combination with 200 mg pembrolizumab on Day 1 of each 21-day infusion cycle until the 35-cycle limit is reached.
  • Experimental: vibostolimab +pembrolizumab+pemetrexed+carboplatin
    Participants will receive a fixed dose of vibostolimab in combination with 200 mg pembrolizumab, 500 mg/m\^2 pemetrexed, and Area Under Curve (AUC) 5 mg/mL/min carboplatin on Day 1 of each 21-day infusion cycle for up to 4 cycles followed by maintenance therapy with a fixed dose of vibostolimab in combination with 200 mg pembrolizumab and 500 mg/m\^2 pemetrexed on Day 1 of each 21-day infusion cycle for up to an additional 31 cycles.
  • Experimental: vibostolimab Dose 1 Japanese cohort
    Japanese participants will be randomized to receive a fixed dose (Dose 1) of vibostolimab in combination with 200 mg pembrolizumab on Day 1 of each 21-day infusion cycle until the 35-cycle limit is reached.
  • Experimental: vibostolimab Dose 2 Japanese cohort
    Japanese participants will be randomized to receive a fixed dose (Dose 2) of vibostolimab in combination with 200 mg pembrolizumab on Day 1 of each 21-day infusion cycle until the 35-cycle limit is reached.
  • Experimental: pembrolizumab/vibostolimab coformulation
    Participants will receive a fixed dose of pembrolizumab/vibostolimab coformulation, consisting of 200 mg of pembrolizumab + 200 mg vibostolimab, on Day 1 of each 21-day infusion cycle for up to 35 cycles.
  • Experimental: vibostolimab+pembrolizumab+carboplatin OR cisplatin+etoposide
    Participants will receive 200 mg vibostolimab in combination with 200 mg pembrolizumab, plus the investigator's choice of Area Under Curve (AUC) 5 mg/mL/min carboplatin OR 75 mg/m\^2 cisplatin on Day 1 of each 21-day cycle plus 100 mg/m\^2/day etoposide on Days 1-3 of each 21-day cycle for up to 4 cycles. Maintenance therapy with 200 mg vibostolimab in combination with 200 mg pembrolizumab on Day 1 of each 21-day cycle will continue for up to an additional 31 cycles. A participant will be allowed to switch from cisplatin to carboplatin in the event of an adverse event (AE), ineligibility for further cisplatin therapy, and/or the investigator considers switching to carboplatin to be in the best interest of the participant.
  • Experimental: pembrolizumab/vibostolimab coformulation China cohort
    Participants from mainland China will receive a fixed dose of pembrolizumab/vibostolimab coformulation, consisting of 200 mg of pembrolizumab + 200 mg vibostolimab, on Day 1 of each 21-day infusion cycle for up to 35 cycles.

Primary Outcome Measure

Number of Participants With Dose Limiting Toxicities (DLTs) up to 24 Months [ Time Frame: Up to 24 Months ]

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