A Pralatrexate Study in Asian Patients With Peripheral T-cell Lymphoma After Prior Therapy

Overview

This study is to evaluate the objective response rate to pralatrexate in Asian PTCL patients after prior treatment failure, as determined by independent imaging reviewer(s) using international workshop lymphoma response criteria (IWC)

Full Title of Study: “A Multi-Center, Open-Labelled, Pralatrexate Study in Asian Patients With Peripheral T-cell Lymphoma After Prior Therapy”

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: N/A
    • Intervention Model: Single Group Assignment
    • Primary Purpose: Treatment
    • Masking: None (Open Label)
  • Study Primary Completion Date: December 31, 2020

Detailed Description

Peripheral T-cell lymphomas (PTCL) are a group of aggressive and diverse lymphoproliferative disorders. It is characterized by the presence of malignant mature T-cells or NK cells. There is as yet no consensus regarding standard frontline or relapsed/refractory therapy for PTCL. A previous phase II study conducted in US showed durable responses of pralatrexate treatment in relapsed or refractory PTCL, irrespective of age, histological subtypes, amount of prior therapy, prior methotrexate, and prior autologous stem-cell transplant. This single-arm, multi-center study aims to evaluate the efficacy and safety of pralatrexate monotherapy in prior treatment failure PTCL patients who may undergo HSCT in case of CR or PR, or continue pralatrexate in case of CR, PR or SD. Primary objective: – To evaluate the objective response rate to pralatrexate in Asian PTCL patients after prior treatment failure, as determined by independent imaging reviewer(s) using international workshop lymphoma response criteria (IWC) Secondary objectives: – To determine the safety of pralatrexate in Asian PTCL patients by, – Incidence of adverse events (AEs) and serious adverse events (SAEs) emergent from the treatment – To evaluate the efficacy of pralatrexate in Asian PTCL patients after prior treatment failure by, – Overall survival (OS), progression-free-survival (PFS), complete response (CR) and partial response (PR) rate, and duration of CR and PR – Treatment duration with pralatrexate in the patients without hematopoietic stem cell transplant (HSCT) who achieve CR or PR – Percentage of patients who undergo HSCT – 1-year OS, 1-year PFS, and 1-year relapse rate after HSCT – 2-year OS, 2-year PFS, and 2-year relapse rate after HSCT

Interventions

  • Drug: Pralatrexate
    • This is a single arm study. Pralatrexate will be administered via IV over 3-5 minutes into a IV line containing normal saline (0.9% sodium chloride, NaCl) with the initial dose of 30 mg/m2/week on days 1, 8, 15, 22, 29, and 36 for 6 weeks in a 7-week cycle. The scheduled date can be done within a window time of plus or minus 1 day. The pralatrexate dose may be reduced to 20 mg/m2/week or omit if a patient experiences adverse events. Pralatrexate administration can be up to 5 cycles or until subject meets withdrawal criteria.

Arms, Groups and Cohorts

  • Experimental: Pralatrexate treatment
    • Pralatrexate will initially be administered at a dose of 30 mg/m2/week on days 1, 8, 15, 22, 29 and 36 for 6 weeks in a 7-week cycle (cycle: 6 weeks + 1 week rest). The scheduled date can be done within a window time of plus or minus 1 day

Clinical Trial Outcome Measures

Primary Measures

  • Objective Response Rate
    • Time Frame: Up to 35 weeks
    • Objective response rate (ORR) to pralatrexate treatment in Asian PTCL patients after prior treatment failure, as determined by independent imaging reviewer(s) using international workshop lymphoma response criteria (IWC)

Secondary Measures

  • Incidence of Treatment-Emergent Adverse Events [Safety and Tolerability]
    • Time Frame: Up to 40 weeks
    • Incidence of adverse events (AE) and serious adverse events (SAE) emergent from the treatment
  • Overall survival
    • Time Frame: Up to 5 years
    • Duration of overall survival (months)
  • Progression-free survival
    • Time Frame: Up to 5 years
    • Duration of PFS (months)
  • Completion response rate
    • Time Frame: Up to 5 years
    • The percentage of CR
  • Partial response rate
    • Time Frame: Up to 5 years
    • The percentage of PR
  • Duration of CR and PR
    • Time Frame: Up to 5 years
    • Duration of completion response and partial response (days)
  • Treatment duration
    • Time Frame: Up to 35 weeks
    • Treatment duration with pralatrexate in the patients without HSCT who achieve CR or PR
  • Hematopoietic stem cell transplant (HSCT)
    • Time Frame: Up to 5 years
    • Percentage of patients who undergo HSCT
  • 1-year OS rate after HSCT
    • Time Frame: Up to 1 year
    • 1-year overall survival rate after conducting HSCT
  • 1-year PFS rate after HSCT
    • Time Frame: Up to 1 year
    • 1-year progression-free survival rate after conducting HSCT
  • 1-year relapse rate after HSCT
    • Time Frame: Up to 1 year
    • 1-year relapse rate after conducting HSCT
  • 2-year OS rate after HSCT
    • Time Frame: Up to 2 years
    • 2-year overall survival rate after conducting HSCT
  • 2-year PFS rate after HSCT
    • Time Frame: Up to 2 years
    • 2-year progression-free survival rate after conducting HSCT
  • 2-year relapse rate after HSCT
    • Time Frame: Up to 2 years
    • 2-year relapse rate after conducting HSCT

Participating in This Clinical Trial

Inclusion Criteria

1. At least 20 years of age, inclusive 2. Patients with histologically/cytologically confirmed PTCL using either: NCCN diagnosis criteria, the Revised European American Lymphoma (REAL), and World Health Organization (WHO) disease classification (PTCL histology/cytology subtypes diagnosed by site investigators, PTCL histology/cytology subtypes rechecked by study central pathology lab): 1. At least 5 patients with Peripheral T-cell lymphoma, NOS 2. At least 5 patients with Angioimmunoblastic T-cell lymphoma 3. At least 5 patients with Extranodal NK/T-cell lymphoma, nasal type 4. Enteropathy-type T-cell lymphoma 5. Hepatosplenic T-cell lymphoma 6. Subcutaneous panniculitis-like T-cell lymphoma 7. Adult T-cell lymphoma/leukemia (human T-cell leukemia virus [HTLV] 1+) 3. Patients with documented progressive disease (PD) failed after prior treatment 1. Patients may not have received an experimental drug as their only prior therapy 2. Patient has had at least 1 biopsy from initial diagnosis of PTCL or in the relapsed setting to confirm PTCL subtypes 3. Patient has recovered from the toxic effects of prior therapy 4. Eastern Cooperative Oncology Group (ECOG) Performance Status ≤ 2. 5. Adequate hematological, hepatic, and renal function as defined by: absolute neutrophil count (ANC) ≥ 1000/µL, platelet count ≥ 100,000/µL (and ≥ 50,000/µL for any following dose), total bilirubin ≤ 1.5 mg/dL, aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 2.5 X upper limit of normal (ULN) (AST/ALT < 5 X ULN if documented hepatic involvement with lymphoma), creatinine ≤ 1.5 mg/dL or a calculated creatinine clearance ≥ 50 mL/min. 6. Women of childbearing potential must agree to practice medically acceptable contraceptive regimen from 30 days prior to study treatment initiation until at least 30 days after the last administration of pralatrexate and must have had a negative serum pregnancy test within 14 days prior to the first day of study treatment. Patients who are postmenopausal for at least 1 year (> 12 months since last menses) or were surgically sterilized do not require this test. 7. Men who are not surgically sterile must agree to practice a medically acceptable contraceptive regimen from study treatment initiation until at least 90 days after the last administration of pralatrexate. 8. Patient has provided written informed consent (IC) Exclusion Criteria:

1. Patient has following subtypes (histologically/cytologically confirmed) of PTCL 1. Anaplastic large cell lymphoma, ALK +/- 2. Patient has: Precursor T/NK neoplasms, with the exception of blastic NK lymphoma 3. T-cell prolymphocytic leukemia (T-PLL) 4. T-cell large granular lymphocytic leukemia 5. Mycosis fungoides and transformed mycosis fungoides 6. Sézary syndrome 7. Primary cutaneous CD30+ disorders: Anaplastic large cell lymphoma and lymphomatoid papulosis 8. Patient has: Extranodal NK/T-cell lymphoma, nasal type with local recurrence 2. Active concurrent malignancy (except for non-melanoma skin cancer or carcinoma in situ of the cervix). If there is a history of prior malignancy, the patient must be disease-free for ≥ 5 years. 3. Congestive heart failure Class III/IV according to the New York Heart Association's Heart Failure guidelines. 4. Patients with human immunodeficiency virus (HIV)-positive diagnosis and are receiving combination anti-retroviral therapy. 5. Current or the history of brain metastases or central nervous system (CNS) diseases 6. Have undergone allogeneic stem cell transplant 7. Relapsed less than 75 days from time of autologous stem cell transplant 8. Patients with uncontrolled hypertension, active uncontrolled infection, underlying medical condition including unstable cardiac disease, or other serious illness that would impair the ability of the patient to receive protocol treatment 9. Had major surgery within 2 weeks of study entry 10. Receipt of any conventional chemotherapy or radiation therapy (RT) within 4 weeks (6 weeks for nitrosoureas or mitomycin C) prior to study treatment or planned use during the course of the study 11. Receipt of corticosteroids within 7 days of study treatment, unless patient has been taking a stable dose of no more than 10 mg/day of prednisone for at least 1 month 12. Use of any investigational drug, biologic modifier, or device within 4 weeks prior to study treatment or planned use during the course of the study 13. Previous exposure to pralatrexate 14. Other conditions that investigators consider not suitable for study enrollment

Gender Eligibility: All

Minimum Age: 20 Years

Maximum Age: N/A

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • Taiwan Mundipharma Pharmaceuticals Ltd.
  • Provider of Information About this Clinical Study
    • Sponsor
  • Overall Official(s)
    • Bor-Sheng Ko, PhD, Principal Investigator, National Taiwan University Hospital
  • Overall Contact(s)
    • Bor-Sheng Ko, PhD, 886-23123456, kevinkomd@gmail.com

References

Savage KJ. Peripheral T-cell lymphomas. Blood Rev. 2007 Jul;21(4):201-16. Epub 2007 May 18. Review.

Shustov A. Novel therapies for peripheral T-cell lymphomas. Ther Adv Hematol. 2013 Jun;4(3):173-87. doi: 10.1177/2040620713481980.

Savage KJ, Harris NL, Vose JM, Ullrich F, Jaffe ES, Connors JM, Rimsza L, Pileri SA, Chhanabhai M, Gascoyne RD, Armitage JO, Weisenburger DD; International Peripheral T-Cell Lymphoma Project. ALK- anaplastic large-cell lymphoma is clinically and immunophenotypically different from both ALK+ ALCL and peripheral T-cell lymphoma, not otherwise specified: report from the International Peripheral T-Cell Lymphoma Project. Blood. 2008 Jun 15;111(12):5496-504. doi: 10.1182/blood-2008-01-134270. Epub 2008 Apr 2.

Society TLL, Peripheral T-Cell Lymphoma Facts, 2014.

Wang ES, O'Connor O, She Y, Zelenetz AD, Sirotnak FM, Moore MA. Activity of a novel anti-folate (PDX, 10-propargyl 10-deazaaminopterin) against human lymphoma is superior to methotrexate and correlates with tumor RFC-1 gene expression. Leuk Lymphoma. 2003 Jun;44(6):1027-35.

Krug LM, Ng KK, Kris MG, Miller VA, Tong W, Heelan RT, Leon L, Leung D, Kelly J, Grant SC, Sirotnak FM. Phase I and pharmacokinetic study of 10-propargyl-10-deazaaminopterin, a new antifolate. Clin Cancer Res. 2000 Sep;6(9):3493-8. Erratum in: Clin Cancer Res 2001 Apr;7(4):1102.

O'Connor OA, Pro B, Pinter-Brown L, Bartlett N, Popplewell L, Coiffier B, Lechowicz MJ, Savage KJ, Shustov AR, Gisselbrecht C, Jacobsen E, Zinzani PL, Furman R, Goy A, Haioun C, Crump M, Zain JM, Hsi E, Boyd A, Horwitz S. Pralatrexate in patients with relapsed or refractory peripheral T-cell lymphoma: results from the pivotal PROPEL study. J Clin Oncol. 2011 Mar 20;29(9):1182-9. doi: 10.1200/JCO.2010.29.9024. Epub 2011 Jan 18.

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