A Study of V934/V935 Vaccine in Cancer Participants With Selected Solid Tumors (V934-002)

Merck Sharp & Dohme LLC37 enrolled

Overview

This is a two-part study to test the safety, tolerability, and immune response for V934/V935 vaccine using a new prime-boost regimen in participants with selected solid tumors.

Two vaccines will be administered: V934-electroporation (EP) either low dose (LD) or high dose (HD), and V935 either LD or HD. In Part A, participants will be assigned to V935 vaccine alone or in combination with V934-EP. Part B will be an optional part of the study, offering V934-EP vaccine booster to participants who were enrolled in Part A.

Study Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Non-Small Cell Lung Carcinoma Breast Cancer Melanoma Upper GI Tract Carcinoma Colon Carcinoma Renal Cell Carcinoma Bladder Carcinoma Prostate Cancer

Interventions

V935BIOLOGICAL

A 0.5 mL vaccine administered IM every 2 weeks as either a LD (1 x 10\^9 vector genomes/mL) or a HD (1 x 10\^11 vector genomes/mL).

V934-EPBIOLOGICAL

A 0.5 mL vaccine administered by EP as either a LD (0.5 mg plasmid/mL) or a HD (5.0 mg plasmid/mL).

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria Part A * Participant has one of the selected solid tumors with no distant metastases, and is more than 8 weeks from completion of definitive therapy with intention to cure. Selected Solid Tumors: Stage I to III non-small cell lung carcinoma (NSCLC); Stage III breast cancer; Stage IIB or III melanoma; Stage II or III upper gastrointestinal tract carcinoma (e.g., esophagus, stomach, gallbladder, pancreas); Stage III colon carcinoma; Stage II, III, or IV (M0 only) renal cell carcinoma; Stage II, III, or IV (M0 only) bladder carcinoma; clinically-localized prostate carcinoma * Participant has adequate organ function. * Female participant of childbearing potential has a negative serum pregnancy test within 3 days of study enrollment. Exclusion Criteria Part A * Participant has known hypersensitivity to any component of study vaccine. * Participant has a history of clinically significant cardiac conditions, including cardiac arrhythmias which have not been controlled within the last 3 months, unstable angina, myocardial infarction (within the last 3 months), or New York Heart Association (NYHA) Class III or IV congestive heart failure. Participant must have no clinically significant electrocardiogram (ECG) abnormalities and not have a pacemaker or cardioverter/defibrillator implanted. * Participant has undergone splenectomy or has any history of autoimmune disorder. * Participant has received immunosuppressive treatment within 1 month prior to enrollment. * Participant has known acquired, inherited, or idiopathic thrombocytopenia, platelet dysfunction or coagulopathy that would contraindicate IM injections. * Participant has an acute infection requiring intravenous antibiotic, antiviral or antifungal agents within 2 weeks of study entry. * Participant is pregnant or breastfeeding, or expecting to conceive at any time during the study or within 1 year after receiving the last vaccination. * Participant is known to be Human Immunodeficiency Virus (HIV)-seropositive. * Participant has known history of Hepatitis B or C or active Hepatitis A. * Participant has been vaccinated for any disease or for prophylaxis within 1 month prior to the first vaccination. * The participant has been diagnosed with Systemic Lupus Erythematosus (SLE) Inclusion Criteria Part B * Participant must have completed their respective vaccination Treatment Group regimen for Part A of this study. * Participant must have completed a ≥12 week safety observation period prior to receiving their first V934-EP boost. Exclusion Criteria Part B * Participant has new or metastatic tumor lesions since enrollment in Part A. * Participant has developed any significant cardiac conditions since enrollment in Part A including cardiac arrhythmias which have not been controlled within the last 3 months, unstable angina, myocardial infarction (within the last 3 months), or NYHA Class III or IV congestive heart failure. * Participant has undergone a splenectomy, or has developed any autoimmune disorders, since enrollment in Part A. * Participant has received immunosuppressive treatment within 1 month prior to enrollment in Part B * Participant has developed any acquired, inherited, or idiopathic thrombocytopenia, platelet dysfunction or coagulopathy that would contraindicate IM injections * Participant has an acute infection requiring intravenous antibiotic, antiviral or antifungal agents within 2 weeks of entry to Part B.

Outcomes

Primary Outcomes

Number of Participants With Dose-Limiting Toxicity (DLT)

DLT was defined as a vaccine- or EP-related adverse event (AE) including the following: Hematological (Grade 3 neutropenia with fever, Grade 4 neutropenia ≥5 days, Grade 4 thrombocytopenia) or non-hematological AE, Grade 3, 4 or 5 with the exception of Grade 3 nausea, vomiting, diarrhea or serum glutamic oxaloacetic transaminase (SGOT) elevation, alopecia, Grade 3/4 creatinine phosphokinase (CPK) elevation or inadequately treated hypersensitivity. Any Grade 3/4 related AE that failed to return to ≤Grade 1 or baseline within 14 days was also considered a DLT.

Time frame: Day 1 up to 30 days following the last vaccination (up to 77 weeks); Treatment Period + Acute Follow-up (FU) Period

Number of Participants With Adverse Events (AEs)

This analysis includes the number of participants with AEs and serious AEs (SAEs) during the Treatment Period plus the Acute Follow-up (FU) Period (up to 30 days following last vaccination). An AE was defined as any unfavorable or unintended change in the structure, function or chemistry of the body temporally associated with the use of the product, whether or not considered related to the product, including any worsening of a preexisting condition which was temporally associated with the product. An SAE was defined as an AE resulting in death, was life-threatening, resulted in or prolonged hospitalization, was a congenital anomaly, a cancer, an overdose or other important medical event.

Time frame: Day 1 up to 30 days following the last vaccination (up to 77 weeks); Treatment Period + Acute Follow-up (FU) Period

Secondary Outcomes

Number of Participants With Immunologic Response to V934/V935 (Immunologic Response Rate)

An Enzyme-Linked Immunosorbent Spot (ELISPOT) assay was planned to be used to demonstrate a cell mediated immune response to V935 and/or V934 in vaccinated participants. Collection of Peripheral Blood Mononuclear Cells (PBMCs) and serum took place at baseline (Screening and pre-vaccination Day 1), and various time points post vaccination across the three distinct regimens to be tested. A positive immune response was to be defined by a minimum number of spot-forming cells per million PBMC (SFC/10\^6 PBMCs) for the antigen well and a minimum n-fold increase in the antigen well over the control well.

Data from ClinicalTrials.gov

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