Purpose

This is a Phase 1/2, multicenter, open-label study to evaluate the safety and efficacy of BEAM-201 in patients with relapsed/refractory T-ALL or T-LL. This study consists of Phase 1 dose-exploration cohorts, Phase 1 dose-expansion cohort(s), a Phase 1 pediatric cohort (will enroll patients ages 1 to < 12 years), and a Phase 2 cohort.

Conditions

Eligibility

Eligible Ages
Between 18 Years and 50 Years
Eligible Genders
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  1. Ages 18 to ≤ 50 years. 2. Ages ≥ 1 year to < 18 years, after health authority approval. 3. T-ALL/T-LL that is CD7-positive (defined as at least 20% of blasts positive for CD7 by flow cytometry or immunohistochemistry based on assessment of the study site's CLIA [Clinical Laboratory Improvement Amendments of 1988] certified facility) in second or greater relapse, first relapse post-transplant relapse, or chemotherapy-refractory disease. Specifically: 1. Second or greater relapse or post-transplant relapse, defined as: - BM with ≥ 5% lymphoblasts by morphologic assessment or evidence of extramedullary disease at screening after second documented CR; OR - Flow cytometric confirmation of relapsed T-ALL of at least 0.1% after second CR documented to have been MRD negative < 0.1%; OR - Any detectable relapsed disease post-allogeneic HSCT with flow cytometric confirmation of T-ALL of at least 0.1%; OR - Biopsy confirmed evidence of relapsed T-LL on lymph node biopsy after second CR; OR - Any detectable disease post-allogeneic transplant with biopsy confirmed evidence of T-LL on lymph node biopsy 2. Refractory disease, defined as: - Primary refractory T-ALL or T-LL, defined as failure to achieve CR after induction chemotherapy, per investigator assessment and based on biopsy-confirmed evidence of residual T-ALL or T-LL; OR - Relapsed, refractory disease, defined as > 5% BM blasts or biopsy-confirmed evidence of residual TLL after 1 course of re-induction chemotherapy for patients who have relapsed after previously achieving a CR NOTE: Patients with mixed phenotype acute leukemia with T-cell dominant phenotype may be enrolled if the aforementioned criteria are met. 4. Eligible for myeloablative conditioning for and allogeneic HSCT based on the investigator's assessment with an available donor identified by a FACT accredited transplant center.

Exclusion Criteria

  1. CNS involvement meeting any of the following criteria: CNS-3 disease, progressive CNS involvement despite therapy, CNS parenchymal or cranial nerve lesions on imaging. 2. Clinically active CNS dysfunction or known history of irreversible neurological toxicity related to prior antileukemic therapy. 3. Receipt of prior CD7 targeted therapy. 4. Systemic antileukemic therapy intended to induce or maintain remission within 14 days prior to completion of screening.

Study Design

Phase
Phase 1/Phase 2
Study Type
Interventional
Allocation
Non-Randomized
Intervention Model
Parallel Assignment
Intervention Model Description
The maximum number of patients for this study is approximately 102 patients: - 36 patients in the Phase 1 dose exploration - approximately 12 patients in the Phase 1 dose-expansion cohorts - 6 patients in the pediatric cohort - approximately 48 patients in the Phase 2 cohort.
Primary Purpose
Treatment
Masking
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
Fludarabine, cyclophosphamide and alemtuzumab
Lymphodepletion regimen including fludarabine, cyclophosphamide and alemtuzumab
  • Biological: BEAM-201
    A single dose of BEAM-201 administered by IV following one of two lymphodepletion regimens
Experimental
Fludarabine, cyclophosphamide without alemtuzumab
Lymphodepletion regimen without Alz but consisting of the same dose of Flu/Cy as in the other arm
  • Biological: BEAM-201
    A single dose of BEAM-201 administered by IV following one of two lymphodepletion regimens

Recruiting Locations

The University of Kansas Cancer Center
Fairway, Kansas 66205

More Details

Status
Recruiting
Sponsor
Beam Therapeutics Inc.

Study Contact

Medical Information
857-327-8641
clinicalinfo@beamtx.com

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.