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Study of the Safety and Tolerability of PCI-24781 in Patients With Lymphoma

Phase I/II Dose-Escalation Study of the Pan-Histone Deacetylase (HDAC) Inhibitor PCI-24781 in Lymphoma

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00724984
Acronym
PCYC-0403
Enrollment
55
Registered
2008-07-30
Start date
2008-07-31
Completion date
Unknown
Last updated
2014-04-07

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

Conditions

Lymphoma, Hodgkin Disease, Lymphoma, Non-Hodgkin

Keywords

PCI-24781, Lymphoma, Hodgkin Disease, Lymphoma, Non-Hodgkin, Lymphoma, Large B-Cell, Diffuse, Lymphoma, Follicular, Lymphoma, B-Cell, Marginal Zone, Leukemia, Lymphocytic, Chronic, B-Cell, Lymphoma, Mantle Cell, Lymphoma, T-Cell, Cutaneous, Lymphoma, T-Cell, Peripheral

Brief summary

The first part of the study will determine the highest dose of study drug that can be taken without causing serious side effects in patients with lymphoma. The appropriate dose determined from the first part of the study will be used in the second part of the study to assess disease response in 2 different types of lymphoma patients.

Interventions

Phase I Dose Escalation: Up to 5 cohorts will receive PCI-24781 orally at doses starting at 30mg/m2 two times a day approximately 4-6 hours apart (BID), up to 90mg/m2 administered 5 days/week during the first 21 days of each 28 day cycle until the maximum tolerated dose (MTD) is reached. If a dose limiting toxicity (DLT) occurs, then the next cohort will receive PCI-24781 BID for 7 days every other week (2 times in a 28 day cycle). Phase II Efficacy Evaluation: All patients will receive PCI-24781 orally at the dosage and regimen determined in Phase I.

Sponsors

Pharmacyclics LLC.
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* • age ≥ 18 years * Phase I: Any measurable, histologically confirmed, and previously treated lymphoma * Phase II: Measurable, histologically confirmed, and previously treated lymphoma in one of the following categories: 1. Follicular non-Hodgkin's Lymphoma 2. Mantle cell lymphoma * Ability to swallow oral capsules without difficulty * Estimated life expectancy \> 12 weeks * ECOG performance status ≤ 1 * Willing and able to sign a written informed consent

Exclusion criteria

* • More than four prior systemic treatment regimens (not counting maintenance rituximab; salvage therapy/conditioning regimen preceding autologous bone marrow transplantation \[ABMT\] and ABMT count as one regimen) * Allogeneic bone marrow transplant * Immunotherapy, chemotherapy, radiotherapy or experimental therapy within 4 weeks before first day of study drug dosing * Major surgery within 4 weeks before first day of study drug dosing * CNS lymphoma or a history of meningeal carcinomatosis * Prior treatment with an HDAC inhibitor (unless for treatment of Mycosis fungoides or Sézary syndrome) * Creatinine \> 1.5 x institutional upper limit of normal (ULN) or creatinine clearance ≤ 50 mL/min * Total bilirubin \> 1.5 x institutional ULN (unless elevated from documented Gilbert's syndrome) * AST and ALT \> 2.5 x institutional ULN * Platelet count \< 75,000/µL for Phase I and \<100,000\>µL for Phase II * Absolute neutrophil count (ANC) \< 1500/µL * Malabsorption * Corticosteroids \> 20 mg prednisone equivalent per day (topical, inhaled, or nasal corticosteroids are permitted) * Concurrent therapeutic anticoagulation (Phase I only) * Uncontrolled illness including but not limited to: ongoing or active infection, symptomatic congestive heart failure (New York Heart Association Class III or IV heart failure), unstable angina pectoris, cardiac arrhythmia, and psychiatric illness that would limit compliance with study requirements * Risk factors for, or use of drugs known to prolong QTc interval or that may be associated * QTc prolongation (defined as a QTc ≥ 450 msecs) or other significant ECG abnormalities including 2nd degree AV block type II, 3rd degree AV block, or bradycardia (ventricular rate less than 50 beats/min). If the screening ECG has a QTc ≥ 450 msecs, the ECG can be submitted for a centralized, cardiologic evaluation. * History of myocardial infarction, acute coronary syndromes (including unstable angina), coronary angioplasty and/or stenting within the past 6 months. * For patients with history of myocardial infarction, congestive heart failure, abnormal left ventricular ejection fraction (LVEF), and/or prior anthracycline exposure, LVEF \< 50%, as assessed by ventriculography (nuclear or heart catheterization) or echocardiogram, when performed within 28 days of first dose of study drug. * For patients with history of coronary artery disease, a cardiac stress test (either exercise or pharmacologic) that demonstrates clinically significant abnormalities when performed within 28 days of first dose of study drug. * Known HIV infection. * Other medical or psychiatric illness or organ dysfunction which, in the opinion of the investigator, would either compromise the patient's safety or interfere with the evaluation of the safety of the study agent. * Pregnant or lactating women (female patients of child-bearing potential must have a negative serum pregnancy test within 14 days of first day of drug dosing, or, if positive, a pregnancy ruled out by ultrasound). * Women of child-bearing potential, or sexually active men, unwilling to use adequate contraceptive protection during the course of the study.

Design outcomes

Primary

MeasureTime frameDescription
Phase I (Dose Escalation Phase): MTD and DLTs of PCI-24781 Administered Twice Daily (BID) Measure: Disease ResponseFrom the Date of PCI-24781 first administration to Cycle 2 Day 1Number of patients experienced DLT in each cohort
Phase II: Overall Response Rate (CR+PR)From first response assessment (day 22 to 28 of Cycle 2) to last response assessment on day 22-28 in even-numbered cycles

Countries

United States

Participant flow

Participants by arm

ArmCount
Cohort 1(30 mg/m2, 5days/wk)/Phase 15
Cohort 2(45 mg/m2, 5days/wk)/Phase 18
Cohort 3(45 mg/m2, 7days/wk)/Phase 13
Cohort 4(60 mg/m2,7days/wk)/Phase 19
Follicular/Phase II16
Mantle Cell Lymphoma/Phase II14
Total55

Baseline characteristics

CharacteristicCohort 1(30 mg/m2, 5days/wk)/Phase 1Cohort 2(45 mg/m2, 5days/wk)/Phase 1Cohort 3(45 mg/m2, 7days/wk)/Phase 1Cohort 4(60 mg/m2,7days/wk)/Phase 1Follicular/Phase IIMantle Cell Lymphoma/Phase IITotal
Age, Continuous68 years67 years62 years66 years62 years67 years66 years
Region of Enrollment
United States
5 participants8 participants3 participants9 participants16 participants14 participants55 participants
Sex: Female, Male
Female
1 Participants5 Participants1 Participants3 Participants8 Participants12 Participants30 Participants
Sex: Female, Male
Male
4 Participants3 Participants2 Participants6 Participants8 Participants2 Participants25 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —— / —— / —
other
Total, other adverse events
5 / 58 / 83 / 39 / 916 / 1613 / 14
serious
Total, serious adverse events
3 / 51 / 80 / 33 / 96 / 165 / 14

Outcome results

Primary

Phase I (Dose Escalation Phase): MTD and DLTs of PCI-24781 Administered Twice Daily (BID) Measure: Disease Response

Number of patients experienced DLT in each cohort

Time frame: From the Date of PCI-24781 first administration to Cycle 2 Day 1

ArmMeasureValue (NUMBER)
Cohort 1(30 mg/m2, BID, 5days/wk)/Phase IPhase I (Dose Escalation Phase): MTD and DLTs of PCI-24781 Administered Twice Daily (BID) Measure: Disease Response0 participants
Cohort 2(45 mg/m2, BID, 5days/wk)/Phase IPhase I (Dose Escalation Phase): MTD and DLTs of PCI-24781 Administered Twice Daily (BID) Measure: Disease Response3 participants
Cohort 3(45 mg/m2, BID, 7days/wk)/Phase IPhase I (Dose Escalation Phase): MTD and DLTs of PCI-24781 Administered Twice Daily (BID) Measure: Disease Response0 participants
Cohort 4(60 mg/m2, BID, 7days/wk)/Phase IPhase I (Dose Escalation Phase): MTD and DLTs of PCI-24781 Administered Twice Daily (BID) Measure: Disease Response2 participants
Primary

Phase II: Overall Response Rate (CR+PR)

Time frame: From first response assessment (day 22 to 28 of Cycle 2) to last response assessment on day 22-28 in even-numbered cycles

ArmMeasureValue (NUMBER)
Cohort 1(30 mg/m2, BID, 5days/wk)/Phase IPhase II: Overall Response Rate (CR+PR)56.3 Percentage of Participants
Cohort 2(45 mg/m2, BID, 5days/wk)/Phase IPhase II: Overall Response Rate (CR+PR)21.4 Percentage of Participants

Source: ClinicalTrials.gov · Data processed: Feb 5, 2026