Evaluating a new treatment for primary central nervous system lymphoma

A Multicenter, Phase I, Open-label, Uncontrolled Study of ONO-4059 in Combination With Rituximab, Methotrexate, Procarbazine, and Vincristine (R-MPV) Therapy for Untreated Primary Central Nervous System Lymphoma (PCNSL)

Phase 1 Interventional Ono Pharmaceutical Co. Ltd · NCT06541665

This study is testing a new combination treatment for people with untreated primary central nervous system lymphoma to see if it is safe and effective.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment20 (estimated)
Ages18 Years and up
SexAll
SponsorOno Pharmaceutical Co. Ltd Industry-sponsored
Locations44 sites (Nagoya-shi, Aichi and 43 other locations)
Trial IDNCT06541665 on ClinicalTrials.gov

What this trial studies

This study aims to assess the tolerability and safety of a combination therapy involving ONO-4059 and R-MPV in patients with untreated primary central nervous system lymphoma (PCNSL). It will involve administering ONO-4059 alongside established treatments such as Rituximab, Methotrexate, Procarbazine, and Vincristine. The study will monitor patients for safety and pharmacokinetics to determine the efficacy of this combined approach.

Who should consider this trial

Good fit: Ideal candidates for this study are patients diagnosed with untreated primary central nervous system lymphoma and with an ECOG Performance Status of 0-2.

Not a fit: Patients with intraocular PCNSL without brain lesions or those unable to swallow oral medications may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with PCNSL, potentially improving outcomes.

How similar studies have performed: While this specific combination has not been widely tested, similar approaches in treating PCNSL have shown promise in other studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients diagnosed with PCNSL
* Patients who have not received treatment for PCNSL in the past
* Patients with ECOG Performance Status 0-2
* Patients expected to survive for 6 months or more

Exclusion Criteria:

* Patients with intraocular PCNSL without brain lesions
* Patients are unable to swallow oral medications

Where this trial is running

Nagoya-shi, Aichi and 43 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Primary Central Nervous System Lymphoma
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.