Maintenance Therapy with N-803 after CD19 CAR T-cell Therapy for the Treatment of Relapsed or Refractory B-cell Non-Hodgkin Lymphoma, CARMEN-803 Trial
This phase I trial tests the safety, side effects, and best dose of N-803 as maintenance therapy after CD19 chimeric antigen receptor (CAR) T-cell therapy for the treatment of B-cell non-Hodgkin lymphoma that has come back after a period of improvement (relapsed) or that does not respond to treatment (refractory). N-803 is a protein complex that stimulates the growth, activation and cancer-killing activity of immune cells and causes the production of immune-related proteins called cytokines, which also leads to the death of cancer cells. Maintenance therapy with N-803 may improve the efficacy of treatment with CD19 CAR T-cell therapy by increasing CD19 CAR T-cell persistence and activation.
Inclusion Criteria
- Subjects aged >= 18 years
- Subjects with histologically confirmed B-cell non-Hodgkin lymphoma (NHL) who have received commercially approved CD19-directed CAR T-cell therapy per Food and Drug Administration (FDA) label
- Subjects achieving CR or PR per Lugano Criteria to CAR T-cell therapy on day (D)+30 post-CAR-T
- Eastern Cooperative Oncology Group (ECOG) performance status =< 2
- Absolute neutrophil count (ANC) >= 750 cells/mm^3 (>= 0.75 x 10^9/L) independent of granulocyte colony-stimulating factor (G-CSF) support
- Platelet count >= 50,000 cells/mm^3 (>= 50 x 10^9/L) independent of transfusion support
- Hemoglobin >= 7 g/dL (>= 70 g/L) independent of transfusion support
- Total bilirubin =< 1.5 x institutional upper limit of normal (ULN) or =< 3 x ULN with Gilbert's disease
- Aspartate aminotransferase (AST) (serum glutamic-oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) =< 3 x institutional ULN * Subjects with liver metastases will be allowed to enroll with AST and ALT levels =< 5 x ULN
- Estimated creatinine clearance >= 30 mL/min by Cockcroft-Gault formula
- For female subjects: Negative pregnancy test or evidence of post-menopausal status. The post-menopausal status will be defined as having been amenorrheic for 12 months without an alternative medical cause. The following age-specific requirements apply: * Women < 50 years of age: ** Amenorrheic for >= 12 months following cessation of exogenous hormonal treatments; and ** Luteinizing hormone and follicle-stimulating hormone levels in the post-menopausal range for the institution; or ** Underwent surgical sterilization (bilateral oophorectomy, or hysterectomy) * Women >= 50 years of age: ** Amenorrheic for 12 months or more following cessation of all exogenous hormonal treatments; or ** Had radiation-induced menopause with last menses > 1 year ago; or ** Had chemotherapy-induced menopause with last menses > 1 year ago; or ** Underwent surgical sterilization (bilateral oophorectomy, bilateral salpingectomy, or hysterectomy)
- Female subjects of childbearing potential and male subjects with a sexual partner of childbearing potential must agree to use a highly effective method of contraception
- Cytokine release syndrome (CRS) and immune effector cell associated neurotoxicity syndrome (ICANS) grade 0 at the time of enrollment and N-803 injection. Subjects must be off steroids and >= 7 days from tocilizumab or other anti-cytokine agent administration
- Clinically significant adverse effects from any prior treatment (e.g. prior surgery, radiotherapy, or other antineoplastic therapy) must have resolved or have been determined to be clinically stable per the investigator
- Able to provide informed consent and willing to sign an approved consent form that conforms to federal and institutional guidelines
Exclusion Criteria
- Prior therapy with N-803, interleukin (IL)-2 or IL-15 based therapy
- Receiving other investigational agents
- Any ongoing toxicity from CAR T-cell therapy that, in the judgment of the investigator, may interfere with study treatment
- Autoimmune disease requiring active treatment, other than corrected hypothyroidism and diabetes mellitus type 1
- History of a prior or current malignancy that, in the opinion of the investigator, is likely to negatively impact subject participation or safety
- Current evidence of uncontrolled, significant intercurrent illness including, but not limited to, the following conditions: * Cardiovascular disorders: ** Stroke or intracranial hemorrhage within 6 months of enrollment ** Unstable angina or acute coronary syndrome within the past 2 months prior to study enrollment ** History of myocardial infarction within 3 months prior to study enrollment in the 12 months prior to study enrollment ** >= grade 3 New York Heart Association (NYHA) functional classification system of heart failure, uncontrolled or symptomatic arrhythmias ** Left ventricular ejection fraction < 40% in the 12 months prior to study enrollment. *** Note: A screening echo is not required for enrollment. * Any other condition that would, in the investigator's judgment, contraindicate the subject's participation in the clinical study due to safety concerns or compliance with clinical study procedures (e.g., infection/inflammation, intestinal obstruction, unable to swallow medication, [subjects may not receive the drug through a feeding tube], social/ psychological issues, etc.)
- Known HIV infection
- Active infection including hepatitis B (known positive hepatitis B virus [HBV] surface antigen [HBsAg] result), or hepatitis C * Note: Subjects with a past or resolved HBV infection (defined as the presence of hepatitis B core antibody [anti-HBc] and absence of HBsAg) are eligible. Subjects positive for hepatitis C (hepatitis C virus [HCV]) antibody are eligible only if polymerase chain reaction is negative for HCV ribonucleic acid (RNA)
- Evidence of other clinically significant uncontrolled condition(s) including but not limited to, uncontrolled systemic bacterial, viral, fungal, or parasitic infection (except for fungal nail infection), or other clinically significant active disease process which in the opinion of the investigator and medical monitor may pose a risk for patient participation. Screening for chronic conditions is not required
- Known prior severe hypersensitivity to investigational product (IP) or any component in its formulations (National Cancer Institute [NCI] Common Terminology Criteria for Adverse Events [CTCAE] version [v]5.0 grade >= 3)
- Subjects taking prohibited medications. A washout period of prohibited medications for a period of at least five half-lives or as clinically indicated should occur before the start of treatment
Additional locations may be listed on ClinicalTrials.gov for NCT07049432.
Locations matching your search criteria
United States
Utah
Salt Lake City
PRIMARY OBJECTIVE:
I. To evaluate the safety and tolerability of nogapendekin alfa inbakicept (N-803) post CAR T-cell therapy.
SECONDARY OBJECTIVES:
I. To assess the rate of conversion from partial response (PR) to complete response (CR) at the end of cycle 6.
II. To assess the duration of response (DOR).
III. To assess median and 2-year progression-free survival (PFS).
IV. To assess median and 2-year overall survival (OS).
EXPLORATORY OBJECTIVES:
I. To evaluate changes in phenotype, frequency, transcriptional profile, and function of CD19 CAR T cells induced by N-803 treatment, and to correlate these changes with clinical outcome.
II. To determine general immune changes (including changes in immune cell populations and cytokines) induced by N-803 treatment, and to correlate these changes with clinical outcome.
III. To assess the immune signature in pre-treatment tumor biopsies (when available) and to correlate with clinical outcome.
IV. To assess immunogenicity of N-803.
OUTLINE: This is a dose-escalation study of N-803 followed by a dose-expansion study.
Patients receive N-803 subcutaneously (SC) on day 1 of each cycle. Cycles repeat every 21 days for up to 6 cycles in the absence of disease progression or unacceptable toxicity. Patients also undergo positron emission tomography (PET) and collection of blood samples throughout the trial and may also undergo computed tomography (CT) and/or biopsy throughout the trial.
After completion of study treatment, patients are followed up at 30 days and then every 3 or 6 months for up to 24 months.
Trial PhasePhase I
Trial Typetreatment
Lead OrganizationHuntsman Cancer Institute/University of Utah
Principal InvestigatorNarendranath Epperla
- Primary IDHCI189957
- Secondary IDsNCI-2025-06970
- ClinicalTrials.gov IDNCT07049432