Symptoms and General Pathology

All Conditions

Neoplasms

Rare Diseases

Recurrence

Glioblastoma

Astrocytoma

Glioma

Neoplasms, Neuroepithelial

Neuroectodermal Tumors

Neuroectodermal Tumors, Primitive

Neoplasms, Germ Cell and Embryonal

Neoplasms by Histologic Type

Neoplasms, Glandular and Epithelial

Neoplasms, Nerve Tissue

Neuroepithelioma

Participants received 80 mg of oral birabresib administered once daily (in a fasted state) every day in a 28-day cycle for up to 6 cycles.

Participants received 120 mg of oral birabresib administered once daily (in a fasted state) every day in a 28-day cycle for up to 6 cycles.

Participants received 160 mg of oral birabresib administered once daily (in a fasted state) every day in a 28-day cycle for up to 6 cycles.

Administered orally in a fasted state once daily.

Birabresib

Medical Director

A study of single-agent birabresib (MK-8628) (formerly known as OTX015) in recurrent GBM after standard front-line therapy failure.

The first phase of the study (dose escalation) will determine the maximum tolerated dose (MTD). MTD assessment will be based using dose-limiting toxicities (DLTs) observed during the first 28 days of treatment.

The second phase of the study (expansion cohort) will assess efficacy as measured by the progression-free survival rate at 6 months (PFS-6) as determined by an independent central review committee.

A Dose-finding Study of Birabresib (MK-8628) in Participants With Recurrent Glioblastoma Multiforme (MK-8628-002)

A Phase IIa Trial With Dose Optimization of OTX015, a Small Molecule Inhibitor of the Bromodomain and Extra-terminal (BET) Proteins, in Recurrent Glioblastoma Multiforme (GBM) Patients

http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf

Progression-free survival was the time from the start of study treatment to the date of clinical or radiographic evidence of progressive disease according to Response Assessment in Neuro-Oncology (RANO) 2010 criteria or death. Progression, as assessed by RANO 2010, was defined as a ≥25% increase in sum of the products of perpendicular diameters of enhancing lesions; any new lesion; or clinical deterioration. PFS at 6 months was measured as the percentage of participants who were alive and progression-free at Month 6. PFS at 6 months was calculated for all participants who were actively enrolled in the study at the 6-month time point.

ORR was defined as the number of participants in the analysis population who experienced a Complete Response (CR: complete disappearance of all enhancing measurable and non-measurable disease sustained for at least 4 weeks; no new lesions; no corticosteroids; and stable or improved clinically) or a Partial Response (PR: ≥50% decrease compared with baseline in the sum of products of perpendicular diameters of all measurable enhancing lesions sustained for at least 4 weeks; no new lesions; stable or reduced corticosteroid dose; and stable or improved clinically) and was assessed using RANO 2010.

DOR was the time from the first documented CR (complete disappearance of all enhancing measurable and non-measurable disease sustained for at least 4 weeks; no new lesions; no corticosteroids; and stable or improved clinically)or PR (≥50% decrease compared with baseline in the sum of products of perpendicular diameters of all measurable enhancing lesions sustained for at least 4 weeks; no new lesions; stable or reduced corticosteroid dose; and stable or improved clinically), as assessed by RANO 2010, until documentation of disease progression, or the date of the last tumor assessment (if there was no documented progression), or the last tumor assessment before the start of further antitumor therapy. DOR was calculated for all participants who experienced a CR or PR.

OS was the time from the start of study treatment to the date of death. Participants were to be censored at their last contact if they were still alive at the cut-off date. OS was calculated for all participants who did not discontinue from the study due to disease progression.

Progression-free survival was the time from the start of study treatment to the date of clinical or radiographic evidence of progressive disease according to RANO 2010 criteria or death. Progression, as assessed by RANO 2010, was defined as a ≥25% increase in sum of the products of perpendicular diameters of enhancing lesions; any new lesion; or clinical deterioration. PFS was measured as the number of participants who were alive and progression-free for up to 6 months.

An 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. The number of participants who experienced at least one AE is presented.

An 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. Any worsening of a preexisting condition temporally associated with the use of the product was also an AE. The number of participants who experienced ≥1 Grade 3-5 AE per National Cancer Institute (NCI) Common Toxicity Criteria for Adverse Events (CTCAE) Version 4.03 criteria is presented. Grade 3 was classified as severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; or limiting self-care; Grade 4 was classified as potentially life-threatening or disabling; and Grade 5 was an AE resulting in death.

The number of participants who discontinued study treatment due to an AE is presented.

A DLT was defined as any of the following toxicities that were considered by the investigator to be related to MK-8628: Hematologic toxicity: Grade 4 hematologic toxicity or febrile neutropenia, Grade 3 neutropenia with infection, Grade 3 thrombocytopenia with bleeding or lasting \>7 days; Non-hematologic toxicity: Grade 3 or 4 non-hematologic toxicity (regardless of duration) unless it was not optimally managed with supportive care, Grade 3 or 4 laboratory abnormality lasting \>7 days, or intolerable Grade 2 non-hematologic toxicity resulting in study treatment discontinuation or delay \>7 days with or without dose reduction.

Blood samples were obtained at specified time points for the pharmacokinetic (PK) analysis of Cmax of MK-8628. MK-8628 concentrations were analyzed using ultra-performance liquid chromatography coupled with a tandem mass spectrometry and Cmax was calculated using the nonlinear mixed-effects modelling software program Monolix version 4.3.2s. The Cmax of MK-8628 after oral administration is presented.

Blood samples were obtained at specified time points for the PK analysis of Tmax of MK-8628. MK-8628 concentrations were analyzed using ultra-performance liquid chromatography coupled with a tandem mass spectrometry and Tmax was calculated using the nonlinear mixed-effects modelling software program Monolix version 4.3.2s. The Tmax of MK-8628 after oral administration is presented.

Blood samples were obtained at specified time points for the PK analysis of t1/2 of MK-8628. MK-8628 concentrations were analyzed using ultra-performance liquid chromatography coupled with a tandem mass spectrometry and t1/2 was calculated using the nonlinear mixed-effects modelling software program Monolix version 4.3.2s. The t1/2 of MK-8628 after oral administration is presented.

Blood samples were obtained at specified time points for the PK analysis of Cl/F of MK-8628. MK-8628 concentrations were analyzed using ultra-performance liquid chromatography coupled with a tandem mass spectrometry and Cl/F was calculated using the nonlinear mixed-effects modelling software program Monolix version 4.3.2s. The Cl/F of MK-8628 after oral administration is presented.

Blood samples were obtained at specified time points for the PK analysis of Vz/F of MK-8628. MK-8628 concentrations were analyzed using ultra-performance liquid chromatography coupled with a tandem mass spectrometry and Vz/F was calculated using the nonlinear mixed-effects modelling software program Monolix version 4.3.2s. The Vz/F of MK-8628 after oral administration is presented.

Blood samples were obtained at specified time points for the PK analysis of Cmin of MK-8628. MK-8628 concentrations were analyzed using ultra-performance liquid chromatography coupled with a tandem mass spectrometry. A single Cmin value for MK-8628 was estimated using dose and steady-state predose concentrations of MK-8628 on Days 29 and 57. The Cmin of MK-8628 after oral administration is presented.

Blood samples were obtained at specified time points for the PK analysis of AUC 0-∞ of MK-8628. MK-8628 concentrations were analyzed using ultra-performance liquid chromatography coupled with a tandem mass spectrometry. The AUC 0-∞ was estimated indirectly using the dose and CL/F values. The AUC 0-∞ of MK-8628 after oral administration is presented.

Oncoethix GmbH, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)

The Safety Population consisted of all participants who received at least one dose of study treatment.

Participants received 80 mg of oral MK-8628 administered once daily (in a fasted state) every day in a 28-day cycle for up to 6 cycles.

MK-8628 80 mg

Participants received 120 mg of oral MK-8628 administered once daily (in a fasted state) every day in a 28-day cycle for up to 6 cycles.

MK-8628 120 mg

Participants received 160 mg of oral MK-8628 administered once daily (in a fasted state) every day in a 28-day cycle for up to 6 cycles.

MK-8628 160 mg

Total

Age, Continuous

Sex: Female, Male

Race and Ethnicity were not collected from any participant.

Race and Ethnicity Not Collected

All participants who received at least one dose of study treatment

This study was terminated 31-Aug-2015 because no clinical activity was detected. The study was not terminated due to safety reasons.

Senior Vice President, Global Clinical Development

All participants who received at least 2 complete cycles (8 weeks) of treatment and had a baseline assessment and 1 on-study magnetic resonance imaging (MRI). Since no participants reached the 6-month time point in the study, PFS at 6 months could not be calculated.

Progression-free Survival (PFS) at 6 Months

All participants who received at least 2 complete cycles (8 weeks) of treatment and had a baseline assessment and 1 on-study MRI or had discontinued early due to disease progression.

Objective Response Rate (ORR)

All participants who received at least 2 complete cycles (8 weeks) of treatment and had a baseline assessment and 1 on-study MRI or had discontinued early due to disease progression. Since no participants experienced a CR or PR, DOR could not be calculated.

Duration of Response (DOR)

All participants who received at least 2 complete cycles (8 weeks) of treatment and had a baseline assessment and 1 on-study MRI or had discontinued early due to disease progression. Since all participants discontinued the study due to disease progression, OS could not be calculated.

Overall Survival (OS)

Progression-free Survival

All participants who received at least one dose of study treatment.

Number of Participants Who Experienced at Least One Adverse Event (AE)

Number of Participants Who Experienced at Least One Toxicity Grade 3-5 AE

Number of Participants Who Discontinued Study Treatment Due to an AE

All participants who received at least 21 days of the planned dose of study drug during the first 28-day cycle or experienced a DLT.

Number of Participants Who Experienced a Dose Limiting Toxicity (DLT) During Cycle 1

All participants who received MK-8628 and had blood samples drawn for PK analyses.

Observed Maximum Concentration (Cmax) of MK-8628

Time to Maximum Concentration (Tmax) of MK-8628

Apparent Terminal Half-Life (t1/2) of MK-8628

Apparent Total Body Clearance (Cl/F) of MK-8628

Apparent Volume of Distribution During the Terminal Phase (Vz/F) of MK-8628

All participants who received MK-8628 and had predose blood samples drawn on Days 29 and 57 for steady state MK-8628 concentration. Participants in the 160 mg dose group were not analyzed for Cmin because they discontinued before Day 29.

Spots Global Cancer Trial Database for A Dose-finding Study of Birabresib (MK-8628) in Participants With Recurrent Glioblastoma Multiforme (MK-8628-002)

Trial Identification

Conditions

Interventions

Study Description

Keywords

Eligibility

Locations

Contact Details

Useful links and downloads for this trial