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A Phase I/II Study of OJP-001 in Patients With Adult T-cell Leukemia/Lymphoma

A Phase I/II Study of OJP-001 in Patients With Adult T-cell Leukemia/Lymphoma

Recruiting
20-85 years
All
Phase 1/2

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Overview

This study aims to evaluate the tolerability of OJP-001, a therapeutic system combining photodynamic therapy (PDT) using OMD-001 and extracorporeal circulation therapy using OJE-001 and OJC-001, in patients with adult T-cell leukemia/lymphoma (ATL). The study will also investigate the recommended dose and pharmacokinetics of OMD-001, as well as the efficacy and safety of OJP-001.

Description

[Phase I part] Patients will receive 5-ALA administered orally once. After administration of 5-ALA, patients will receive OJP-001 once.

Dosage of 5-ALA: 10 mg/kg (1st cohort), 20 mg/kg (2nd cohort), 40 mg/kg (3rd cohort), 60 mg/kg (4th cohort)

[Phase II part] Patients will receive 5-ALA and OJP-001 once a week for 6 months.

Eligibility

Inclusion Criteria:

  • Hematocytologically or pathohistologically proven adult T-cell leukemia/lymphoma with positivity of anti-HTLV-1 antibody (Aggressive subtypes: acute, lymphoma type, or chronic type with unfavorable factor)
  • Age: 20-85
  • Meeting the any following criteria for screening
    • Relapsed or recurrent ATL have history of treatment with mogamulizumab
    • At least one regimen of chemotherapy in case of intolerance/contraindication for mogamulizumab
    • Relapsed or recurrent ATL judged inadequate of treatment with mogamulizumab by investigators
    • Relapsed or recurrent ATL after allogeneic hematopoietic stem cell transplantation
  • Having peripheral blood lesion
  • ECOG performance status: 0-2
  • T-Bil: =< ULNx2, AST and ALT: =< ULNx2.5
  • Expected more than 3 months of survival

Exclusion Criteria:

  • Body Weight < 35kg
  • Hemoglobin < 10g/dL
  • Splenomegaly
  • Subjects who received an following therapy
    • Chemotherapy or molecular-targeted agent for ATL : within 28 days prior to registration
    • Radiotherapy : within 28 days prior to registration
    • Any investigational drugs or medical devices (unapproved in Japan) : within 28 days prior to registration
    • Autologous stem cell transplantation : within 84 days prior to registration
    • Allogenic stem cell transplantation : within 100 days prior to registration
  • Administrated 5-ALA drug except study drug within 7 days prior to registration
  • Ate the foods containing 5-ALA or St. John's wort within 7 days prior to registration
  • Synchronous or metachronous malignancy
  • Uncontrolled severe complications
  • Porphyria
  • Uncontrolled cardiac arrhythmia or Chronic congestive heart failure (NYHA Class III or IV)
  • Uncontrolled inter-current illness including: heart failure, kidney failure, liver failure, hypertension, diabetes mellitus
  • Psychological disorder (mental illness, dementia, depression)
  • HBs-Ag positive or HBc-Ab positive with HBV-DNA positive
  • HCV-Ab positive
  • HIV-Ab positive
  • CNS involvement at screening
  • QTcF > 470ms at screening
  • Uncontrolled intercurrent infection
  • Pregnant or nursing women
  • During participated in other clinical trials
  • Other inadequate conditions determined by investigators
  • In phase II part: subjects who registrated in phase I part of this trial

Study details
    Adult T-Cell Leukemia/Lymphoma (ATLL)

NCT07075328

Otsuka Medical Devices Co., Ltd. Japan

17 September 2025

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