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NCT Number: NCT00773747

Study of Vorinostat (MK-0683) or Placebo, in Combination With Bortezomib in Participants With Multiple Myeloma (MK-0683-088 AMN)

Study of the efficacy and safety of bortezomib administered in combination with vorinostat in patients with relapsed or refractory multiple myeloma. Histone deacetylases (HDAC) facilitate gene transcription by modulating the uncoiling of chromatin. HDAC function is dysregulated in hematologic and solid malignancies, and this dysregulation may result in over-expression of oncogenes. Thus, inhibition of HDACs may result in anti-cancer effects. HDAC inhibitors, like vorinostat, represent a new class of antitumor agents that have the ability to induce antiproliferative effects including cyto-differentiation, cell cycle growth arrest or apoptosis in various cancer cell lines. Several studies have investigated the in vitro antimyeloma activity of vorinostat in combination with bortezomib and have demonstrated that vorinostat may act synergistically with bortezomib to modulate tumor cell growth. Mitsiades et al have shown that vorinostat enhances the sensitivity of bortezomib. Pei et al found that exposure of human multiple myeloma cell lines & patient-derived multiple myeloma cells to bortezomib and vorinostat resulted in synergistic interactions as a result of: (1) Interruption of NF-kB & related signaling pathways (JNK, XIAP, Mcl-1, etc.) (2) Inhibition of Hsp90 (3)Induction of ER stress signal and (4) acetylation of Dynein/disruption of aggresome function/formation, salvage for ubiquitinated proteins. In addition a marked increase in mitochondrial injury, caspase activation, and apoptosis was also observed. Bortezomib is indicated for the treatment of patients with multiple myeloma. Two Phase I dose-ranging studies of a regimen combining vorinostat and bortezomib among patients with relapsed as well asend-stage, refractory multiple myeloma have been conducted. These studies enrolled a total of 57 patients. In these studies, administration of vorinostat with standard doses of bortezomib resulted in responses in 20/45 (44%) evaluable patients (Weber et al 2007, Badros et al 2007). The purpose of the present study is to definitively evaluate the clinical activity of vorinostat in combination with bortezomib inpatients with multiple myeloma.

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Key information

Conditions

Multiple Myeloma Blood Protein Disorders Cardiovascular Diseases Hematologic Diseases Hemic and Lymphatic Diseases Hemorrhagic Disorders Hemostatic Disorders Immune System Diseases Immunoproliferative Disorders Lymphatic Diseases Lymphoproliferative Disorders Neoplasms Neoplasms by Histologic Type Neoplasms, Plasma Cell Paraproteinemias Vascular Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Participant has an established diagnosis of multiple myeloma based on the myeloma diagnostic criteria.
  • Participant has received at least 1 but not more than 3 prior anti-myeloma regimens and has progressive disease after the most recent treatment regimen.
  • Participant must have adequate organ function.

Exclusion criteria

  • Participant has had a prior allogeneic bone marrow transplant or plans to undergo any type of bone marrow transplantation within 4 weeks of the initiation of study therapy.
  • Participant has known hypersensitivity to any components of bortezomib or vorinostat.
  • Participant has active Hepatitis B or C, plasma cell leukemia, or is human immunodeficiency virus (HIV) positive.
  • Participant has had prior treatment with vorinostat or histone deacetylase (HDAC) inhibitors.

Treatment and study plan

Vorinostat

Drug

Four 100 mg capsules vorinostat taken orally, once daily, on Days 1 through 14 of each 21-day treatment cycle.

Other names: Zolinza

bortezomib

Drug

1.3 mg/m2 of bortezomib by IV push, on Days 1, 4, 8, and 11 of each 21-day treatment cycle.

Other names: Velcade

placebo to vorinostat

Drug

Four placebo capsules taken orally, once daily, on Days 1 through 14 of each 21-day treatment cycle.

Primary outcomes

  1. Progression-Free Survival (PFS)

    Time frame: From randomization to event of disease progression or death assessed up to 32 months (final study analysis)

    Progression-free survival was measured from the start of the treatment to the time when the criteria for progression was met or death due to any cause (whichever is first recorded). Response to study therapy was assessed using European Blood and Marrow Transplantation Group (EBMT) Criteria. A stratified Cox proportional hazards model was used with Efron's likelihood approximation to account for ties in event times.

Secondary outcomes

  1. Number of Participants With Grade 3-5 Clinical or Laboratory Adverse Events (AEs)

    Time frame: Up to 722 days

    An adverse event (AE) was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which did not necessarily have to have a causal relationship with this treatment. An AE could therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product/protocol-specified procedure, whether or not considered related to the medicinal product/protocol-specified procedure. Any worsening of a preexisting condition temporally associated with the use of the product was also an AE. Grades come from the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 3.0. Per protocol, clinical and laboratory AEs are presented as a combined total for each grade.

  2. Overall Survival

    Time frame: From randomization up to 32 months (final study analysis)

    Overall survival was measured from the start of the treatment to death due to any cause. Overall Survival is represented as the number of deaths per 100-person- months and was computed by dividing the number of participants with an event of death that occurred during the study follow-up period by the total duration of follow-up (in 100 months) for all the participants in each cohort since participants had different lengths of follow-up.

  3. Time to Progression

    Time frame: Baseline and at the end of each 21-day Cycle assessed up to 32 months (final study analysis)

    Time to progression was measured from the start of the treatment to the time when the criteria for progression was met or death due to myeloma (whichever is first recorded). Response to study therapy was assessed using European Blood and Marrow Transplantation Group (EBMT) Criteria. A stratified Cox proportional hazards model was used with Efron's likelihood approximation to account for ties in event times.

  4. Objective Response Rate

    Time frame: Baseline and at the end of each 21-day Cycle assessed up to 32 months (final study analysis)

    Objective response rate was measured as the proportion of patients who achieved a confirmed partial response or better during the course of the study. Response to study therapy was assessed using EBMT Criteria and confirmed by Independent Adjudication Review.

Sponsors and collaborators

Lead sponsor

Merck Sharp & Dohme LLC

Industry

Registry information

Official study title

An International, Multicenter, Randomized, Double-Blind Study of Vorinostat (MK-0683) or Placebo in Combination With Bortezomib in Patients With Multiple Myeloma

Important dates

Study start
2008
Primary completion
2011
Study completion
2015
First posted
Oct 16, 2008
Registry last updated
Apr 30, 2021

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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