Combination treatment of Tafasitamab and Lenalidomide for relapsed CNS lymphoma

A Phase I/II Study of Tafasitamab Plus Lenalidomide in Relapsed CNS Lymphoma

This study is testing a combination of two drugs, Tafasitamab and Lenalidomide, to see if they can help people with relapsed central nervous system lymphoma feel better and improve their treatment outcomes.

Quick facts

• Phase: PHASE1; PHASE2
• Study type: Interventional
• Enrollment: 35 (estimated)
• Ages: 18 Years and up
• Sex: All
• Sponsor: University of California, San Francisco (other)
• Drugs / interventions: rituximab, Tafasitamab, CAR-T, Chimeric antigen receptor, radiation
• Locations: 1 site (San Francisco, California)
• Trial ID: NCT05351593 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the safety and efficacy of Tafasitamab combined with Lenalidomide in patients with relapsed central nervous system (CNS) lymphoma. It is a single-arm, open-label study that aims to determine the maximum tolerated dose and the recommended phase 2 dose of the combination therapy. The trial also seeks to evaluate the clinical benefit rate and the potential for Tafasitamab to enhance the permeability of the blood-brain barrier, which could improve treatment outcomes. Additionally, the study will explore the relationship between tumor genetics and treatment response, as well as changes in immune cell profiles in patients receiving the therapy.

Who should consider this trial

Good fit: Ideal candidates for this study are adults aged 18 and older with relapsed primary or secondary CNS lymphoma, specifically diffuse large B-cell lymphoma.

Not a fit: Patients with other types of lymphoma or those with a poor prognosis and anticipated survival of less than 2 months may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with relapsed CNS lymphoma, potentially improving survival and quality of life.

How similar studies have performed: While this approach is novel in the context of CNS lymphoma, similar studies with anti-CD19 monoclonal antibodies have shown promise in other lymphoma types.

Eligibility criteria

Inclusion Criteria:

1. Participants must have relapsed primary or secondary CNS lymphoma, diffuse large B-cell lymphoma (DLBCL) type, based on radiographic, ophthalmologic, or CSF criteria (evidence of malignant cells based on CSF studies: cytospin/cytology and flow-cytometry).

   1. Concomitant systemic lymphoma as well as transformation from follicular lymphoma and/or Chronic lymphocytic leukemia (CLL) to an aggressive B-cell histology is allowed.
   2. Participants are eligible with disease in each CNS compartment: brain, leptomeninges/CSF and intraocular compartment.
2. Age \>= 18 years.
3. Anticipated survival \> 2 months, as determined by the investigator.
4. Eastern Cooperative Oncology Group (ECOG) performance status \<=1 (Karnofsky performance status \>= 70%)
5. Demonstrates adequate organ function as defined below:

   1. Absolute neutrophil count (ANC) ≥ 1.5 X 10\^9/ L (1,500/ microliter (mcL), growth factors permitted).
   2. Platelets \>= 50 X 10\^9 / L (50,000/ mcL, platelet transfusion independent).
   3. Total bilirubin \<= 1.5 x institutional upper limit of normal,unless elevated due to Gilbert's syndrome.
   4. Aspartate aminotransferase (AST)/serum glutamic-oxaloacetic transaminase (SGOT) \<=3 X institutional upper limit of normal.
   5. Alanine aminotransferase (ALT)/serum glutamic-pyruvic transaminase (SGPT) \<=3 X institutional upper limit of normal.

   d. Creatinine clearance (CrCl, calculated) \>= 60 mL/min/1.73 m\^2, calculated using the Cockcroft-Gault equation. CrCl \> 60 mL/min/1.73 m2 is requisite for eligibility for the phase I dose-escalation phase of the study.
6. Ability to understand and the willingness to sign a written informed consent document.
7. For participants with evidence of chronic hepatitis B virus (HBV) infection, the HBV viral load must be undetectable on suppressive therapy, if indicated. If a HBV test comes up positive due to Intravenous immunoglobulin (IVIG) and the participant has no prior history of HBV, then perform a HBV PCR to confirm.

   undetectable disease.
8. Individuals with a history of hepatitis C virus (HCV) infection must have been treated and cured. For individuals with HCV infection who are currently on treatment, they are eligible if they have an undetectable HCV viral load.
9. Individuals with a prior or concurrent malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of the investigational regimen are eligible for this trial.
10. The effects of the study drugs on the developing human fetus are unknown. For this reason, and because the teratogenic effect of lenalidomide in humans cannot be ruled out, females of child-bearing potential (FCBP) and men must agree to use adequate contraception. FCBP must agree to undergo pregnancy testing as required in the study protocol. Should a woman become pregnant or suspect they are pregnant while their partner is participating in this study, they should inform her treating physician immediately.
11. Prior Therapies

    1. Participants with CNS lymphoma involving the brain parenchyma must have received at least one prior systemic therapy.
    2. Participants with secondary CNS lymphoma must have received prior CNS-directed treatment.
    3. There is no limit in terms of prior lines of therapy received. Patients may have progressed after prior treatment with IMiD's (including lenalidomide, pomalidomide and CC122), patients may have had prior rituximab or other anti-CD20 based therapy as well as autologous and allogeneic stem cell transplant. Patients who progress after prior stem cell transplant are immediately eligible whereas patients that progress after anti-CD19-based therapy including CAR-T based therapy are not eligible.
12. Recipients of prior hematopoietic stem cell transplant are eligible as long as the following criteria are met:

    1. Absence of graft versus host disease.
    2. Discontinuation of systemic immunosuppressant therapy.

Exclusion Criteria:

1. Has received systemic anti-cancer therapies within 2 weeks of first dose, radiation within 1 week, antibody therapy within 4 weeks.
2. Has not recovered from adverse events due to prior anti-cancer therapy to ≤ grade 1 or baseline (other than alopecia).
3. Is currently receiving any other investigational agents.
4. Has participated in a study of an investigational product and received study treatment or used an investigational device within four weeks of the first dose of treatment.
5. Has a history of HIV infection.
6. Has CNS post-transplant lymphoproliferative disease (PTLD).
7. Has known hypersensitivity to lenalidomide or Tafasitamab.
8. Pregnant women and women of child-bearing potential who will not using an effective method of birth control (detailed in Appendix 3) are excluded from this study because the study drugs have potential for teratogenic or abortifacient effects. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with lenalidomide and/or Tafasitamab, breastfeeding should be discontinued if the mother is treated with study drugs.
9. Prior receipt of anti-CD19 based therapy including anti-CD19, Chimeric antigen receptor T cells (CAR-T) therapy is an exclusion criteria.
10. Has any significant medical condition or comorbidity that could compromise patient safety (e.g., uncontrolled serious infection).

Where this trial is running

San Francisco, California

• University of California, San Francisco — San Francisco, California, United States (RECRUITING)

Study contacts

• Principal investigator: James Rubenstein, MD, PhD — University of California, San Francisco
• Study coordinator: Hayley Wallace

Conditions: CNS Lymphoma, Primary Central Nervous System Lymphoma, Secondary Central Nervous System Lymphoma