Testing PIT565 for patients with relapsed B-cell cancers

A Phase I, Open-label, Multi-center Study of PIT565 in Patients With Relapsed and/or Refractory B-cell Malignancies

PHASE1 · Novartis · NCT05397496

This study is testing a new treatment called PIT565 to see if it can be safe and effective for people with relapsed B-cell cancers like Non-Hodgkin lymphoma and acute lymphoblastic leukemia.

Quick facts

PhasePHASE1
Study typeInterventional
Enrollment140 (estimated)
Ages18 Years to 100 Years
SexAll
SponsorNovartis (industry)
Drugs / interventionstocilizumab, chemotherapy
Locations15 sites (Miami, Florida and 14 other locations)
Trial IDNCT05397496 on ClinicalTrials.gov

What this trial studies

This open-label, multicenter phase I study evaluates the safety and tolerability of PIT565 in patients with relapsed and/or refractory B-cell Non-Hodgkin lymphoma and B-cell acute lymphoblastic leukemia. The study involves a dose escalation phase to determine the maximum tolerated doses and recommended doses, followed by a dose expansion phase to further assess these doses and their administration schedules. An adaptive Bayesian logistic regression model will guide the dose escalation process, ensuring a thorough evaluation of safety and preliminary anti-tumor activity.

Who should consider this trial

Good fit: Ideal candidates include adults aged 18 and older with relapsed or refractory B-cell Non-Hodgkin lymphoma or B-cell acute lymphoblastic leukemia who have failed prior therapies.

Not a fit: Patients with severe hypersensitivity to the study treatment or contraindications to tocilizumab may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a new treatment option for patients with difficult-to-treat B-cell malignancies.

How similar studies have performed: Other studies involving trispecific antibodies have shown promise, indicating potential for success in this novel approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Signed informed consent must be obtained prior to participation in the study.
* Male or female patients ≥18 years of age at the date of signing the informed consent form
* Eastern Cooperative Oncology Group (ECOG) performance status ≤2

NHL patient population

* Refractory or relapsed B-NHL
* Must have relapsed after or failed to respond to at least two prior treatment therapies including an αCD20 monoclonal antibody containing chemotherapy combination regimen
* Must have at least one bi-dimensionally measurable nodal lesion or one bi-dimensionally measurable extranodal lesion, as measured on positron emission tomography-computed tomography (PET/CT) scan

ALL patient population

* Refractory or relapsed CD19-positive B-ALL
* Morphologic disease in the bone marrow (≥ 5% blasts)

Exclusion Criteria:

* History of severe hypersensitivity to any ingredient of the study treatment or its excipients
* Contraindication to tocilizumab
* History of ongoing, chronic or recurrent infectious disease, or evidence of tuberculosis infection
* Malignant disease, other than that being treated in this study. Exceptions to this exclusion include the following: malignancies that were treated curatively and have not recurred within 2 years prior to study treatment; completely resected basal cell and squamous cell skin cancers, and completely resected carcinoma in situ of any type
* Active central nervous system (CNS) involvement by malignancy or presence of symptomatic CNS metastases, or CNS metastases that require local CNS-directed therapy (such as radiotherapy or surgery), or increasing doses of corticosteroids within the 2 weeks prior to the start of study treatment
* Active, known or suspected autoimmune disease other than patients with vitiligo, residual hypothyroidism only requiring hormone replacement, psoriasis not requiring systemic treatment or conditions not expected to recur
* Patients receiving systemic treatment with any immunosuppressive medication

Other protocol-defined inclusion/exclusion criteria may apply.

Where this trial is running

Miami, Florida and 14 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.

View on ClinicalTrials.gov →

Conditions: B-cell Non-Hodgkin Lymphoma, B-cell Acute Lymphoblastic Leukemia, Phase I, Trispecific antibody, Non-Hodgkin lymphoma, Acute Lymphoblastic Leukemia, PIT565

Last reviewed 2026-05-15 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.