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Vorinostat (MK-0683) Phase I Study in Cutaneous T-Cell Lymphoma (CTCL) Patients (MK-0683-089 EXT1)

Phase I Clinical Study of MK-0683 in Patients With Relapsed or Refractory Cutaneous T-Cell Lymphoma (CTCL)

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00771472
Enrollment
10
Registered
2008-10-13
Start date
2008-08-31
Completion date
2011-07-31
Last updated
2015-04-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Lymphoma

Brief summary

Part I evaluates the safety, tolerability and pharmacokinetics (PK) of vorinostat in Japanese patients with relapsed or refractory CTCL. Part II evaluates the safety of vorinostat in Japanese pts. with relapsed or refractory CTCL. Relapsed or refractory CTCL patients will be newly enrolled in Part II.

Interventions

DRUGvorinostat

Parts I & II: Vorinostat (400 mg) Oral, daily (QD). Treatment period is 28 days per cycle.

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
20 Years to No maximum
Healthy volunteers
No

Inclusion criteria

(Parts I & II): * Patients With CTCL Who Have Progressive, Persistent Or Recurrent Disease Subsequent To At Least One Prior Therapy * Eastern Cooperative Oncology Group (ECOG) Performance Status Must Be 0-2 * Patients Have Adequate Bone Marrow, Liver Function And Renal Function

Exclusion criteria

(Parts I & II): * Patients Had Prior Therapy Within 3 Weeks Before Registration, Or Have Not Recovered From Toxicities Of Prior Therapy * Patients Have Uncontrolled Intercurrent Illness * Pregnant Or Women Have A Will To Be Pregnant And Lactating Woman

Design outcomes

Primary

MeasureTime frameDescription
Parts I & II: Number of Participants Experiencing Clinical or Laboratory Adverse Experiences (AE)Day 1 up until 30 days post study completion or early termination (up to approximately 506 days)A laboratory AE is defined as any unfavorable & unintended change in the chemistry of the body temporally associated with the use of study product, whether or not considered related to the use of the product. A clinical AE is defined similarly but also includes changes in structure or function of the body.
Part I: Number of Participants Experiencing Dose Limiting Toxicity (DLT)Day 1 to Day 28A DLT was defined as any of the following (per Common Terminology Criteria for Adverse Events \[CTCAE\] version 3.0): * Grade 3 (severe)-4 (life-threatening) neutropenia with fever ≥ 38.5ºC * Grade 3-4 neutropenia with an infection requiring antibiotic or antifungal treatment * Grade 4 neutropenia lasting at least 5 days * Grade 4 thrombocytopenia * Other Grade 4 hematologic toxicity, including a decrease in hemoglobin, only at the discretion of the principal investigator * Grade 3 or 4 non-hematologic event, except which are manageable by supportive care or non-prohibited therapies

Secondary

MeasureTime frameDescription
Part I: Total Drug Exposure (Area Under the Concentration Curve, AUC[0-24 Hours])Days 1 & 28 of Cycle 1Blood samples taken as follows: Day 1 & Day 28 of Cycle 1: pre dose, and 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10, 12 and 24 hours after dosing of vorinostat.
Part I: Maximum Drug Concentration (Cmax)Days 1 & 28 of Cycle 1Blood samples taken as follows: Day 1 & Day 28 of Cycle 1: pre dose, and 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10, 12 and 24 hours after dosing of vorinostat.
Part I: Time at Which Cmax Occurs (Tmax)Days 1 & 28 of Cycle 1Blood samples taken as follows: Day 1 & Day 28 of Cycle 1: pre dose, and 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10, 12 and 24 hours after dosing of vorinostat.
Part I: The Amount of Time it Takes for the Drug Concentration to Decrease by Half (T1/2)Days 1 & 28 of Cycle 1Blood samples taken as follows: Day 1 & Day 28 of Cycle 1: pre dose, and 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10, 12 and 24 hours after dosing of vorinostat.

Participant flow

Participants by arm

ArmCount
Vorinostat
Parts I & II: vorinostat (400 mg) oral, daily (QD). Treatment period was 28 days per cycle.
10
Total10

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyPhysician Decision23
Overall StudyProgressive Disease31
Overall StudyProtocol Violation10

Baseline characteristics

CharacteristicVorinostat
Age, Continuous55.5 years
STANDARD_DEVIATION 12
Region of Enrollment
Japan
10 participants
Sex: Female, Male
Female
2 Participants
Sex: Female, Male
Male
8 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
10 / 10
serious
Total, serious adverse events
3 / 10

Outcome results

Primary

Part I: Number of Participants Experiencing Dose Limiting Toxicity (DLT)

A DLT was defined as any of the following (per Common Terminology Criteria for Adverse Events \[CTCAE\] version 3.0): * Grade 3 (severe)-4 (life-threatening) neutropenia with fever ≥ 38.5ºC * Grade 3-4 neutropenia with an infection requiring antibiotic or antifungal treatment * Grade 4 neutropenia lasting at least 5 days * Grade 4 thrombocytopenia * Other Grade 4 hematologic toxicity, including a decrease in hemoglobin, only at the discretion of the principal investigator * Grade 3 or 4 non-hematologic event, except which are manageable by supportive care or non-prohibited therapies

Time frame: Day 1 to Day 28

ArmMeasureValue (NUMBER)
VorinostatPart I: Number of Participants Experiencing Dose Limiting Toxicity (DLT)1 participants
Primary

Parts I & II: Number of Participants Experiencing Clinical or Laboratory Adverse Experiences (AE)

A laboratory AE is defined as any unfavorable & unintended change in the chemistry of the body temporally associated with the use of study product, whether or not considered related to the use of the product. A clinical AE is defined similarly but also includes changes in structure or function of the body.

Time frame: Day 1 up until 30 days post study completion or early termination (up to approximately 506 days)

ArmMeasureGroupValue (NUMBER)
VorinostatParts I & II: Number of Participants Experiencing Clinical or Laboratory Adverse Experiences (AE)Clinical AEs10 participants
VorinostatParts I & II: Number of Participants Experiencing Clinical or Laboratory Adverse Experiences (AE)Laboratory AEs6 participants
Secondary

Part I: Maximum Drug Concentration (Cmax)

Blood samples taken as follows: Day 1 & Day 28 of Cycle 1: pre dose, and 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10, 12 and 24 hours after dosing of vorinostat.

Time frame: Days 1 & 28 of Cycle 1

Population: Number of participants with samples at the specified time point

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
VorinostatPart I: Maximum Drug Concentration (Cmax)Day 1 (n=6)0.83 µMStandard Deviation 0.37
VorinostatPart I: Maximum Drug Concentration (Cmax)Day 28 (n=5)1.17 µMStandard Deviation 0.37
Secondary

Part I: The Amount of Time it Takes for the Drug Concentration to Decrease by Half (T1/2)

Blood samples taken as follows: Day 1 & Day 28 of Cycle 1: pre dose, and 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10, 12 and 24 hours after dosing of vorinostat.

Time frame: Days 1 & 28 of Cycle 1

Population: Number of participants with samples at the specified time point

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
VorinostatPart I: The Amount of Time it Takes for the Drug Concentration to Decrease by Half (T1/2)Day 1 (n=5)1.94 hoursStandard Deviation 1.3
VorinostatPart I: The Amount of Time it Takes for the Drug Concentration to Decrease by Half (T1/2)Day 28 (n=4)2.30 hoursStandard Deviation 1.1
Secondary

Part I: Time at Which Cmax Occurs (Tmax)

Blood samples taken as follows: Day 1 & Day 28 of Cycle 1: pre dose, and 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10, 12 and 24 hours after dosing of vorinostat.

Time frame: Days 1 & 28 of Cycle 1

Population: Number of participants with samples at the specified time point

ArmMeasureGroupValue (MEDIAN)
VorinostatPart I: Time at Which Cmax Occurs (Tmax)Day 1 (n=6)2.91 hours
VorinostatPart I: Time at Which Cmax Occurs (Tmax)Day 28 (n=5)3.73 hours
Secondary

Part I: Total Drug Exposure (Area Under the Concentration Curve, AUC[0-24 Hours])

Blood samples taken as follows: Day 1 & Day 28 of Cycle 1: pre dose, and 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10, 12 and 24 hours after dosing of vorinostat.

Time frame: Days 1 & 28 of Cycle 1

Population: Number of participants with samples at the specified time point

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
VorinostatPart I: Total Drug Exposure (Area Under the Concentration Curve, AUC[0-24 Hours])Day 1 (n=6)4.59 µM*hrStandard Deviation 2.34
VorinostatPart I: Total Drug Exposure (Area Under the Concentration Curve, AUC[0-24 Hours])Day 28 (n=5)5.59 µM*hrStandard Deviation 1.24

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026