A Study Evaluating the Safety and Efficacy of EDIT-301 in Participants With Severe Sickle Cell Disease (RUBY)

Editas Medicine

Status and phase

Active, not recruiting

Phase 2

Phase 1

Conditions

Hemoglobinopathies

Sickle Cell Disease

Treatments

Genetic: EDIT-301

Study type

Interventional

Funder types

Industry

Identifiers

NCT04853576

EM-SCD-301-001

Details and patient eligibility

About

The purpose of this study is to evaluate the efficacy, safety and tolerability of treatment with EDIT-301 in adult and adolescent participants with severe sickle cell disease (SCD).

Full description

This is a Phase 1/2 single-arm, open-label, multicenter study evaluating the safety and efficacy of a single unit dose of EDIT-301 for autologous hematopoietic stem cell transplant (HSCT) in subjects with severe SCD. Planned study subjects will be comprised of male and female adult and adolescent subjects with severe SCD, from 12 to 50 years of age, inclusive.

Enrollment

45 estimated patients

Sex

All

Ages

12 to 50 years old

Volunteers

No Healthy Volunteers

Inclusion and exclusion criteria

Key Inclusion Criteria:

Diagnosis of severe sickle cell disease as defined by:

Documented SCD genotype (βS/βS, βS/β0, βS/β+, or others) and
History of at least two severe vaso-occlusive events per year requiring medical attention despite hydroxyurea or other supportive care measures in the two year-period prior to provision of informed consent or assent, as applicable

Karnofsky (for subjects >16 years of age) or Lansky (for subjects ≤ 16 years of age) Performance Status ≥ 80%

Normal transcranial doppler velocity in subjects 16 years of age or younger

Key Exclusion Criteria:

Available 10/10 HLA-matched related donor
Prior HSCT or contraindications to autologous HSCT
Any contraindications to the use of plerixafor during the mobilization of hematopoietic stem cells (HSCs) and any contraindications to the use of busulfan and any other medicinal products required during the myeloablative conditioning, including hypersensitivity to the active substances or to any of the excipients
Unable to receive red blood cell (RBC) transfusion for any reason
Unable or unwilling to comply with standard of care changes in background medical treatment in preparation of, during, or following HSCT, including and not limited to discontinuation of hydroxyurea, voxelotor, crizanlizumab, or L-glutamine
Any history of severe cerebral vasculopathy
Inadequate end organ function
Advanced liver disease
Any prior or current malignancy or immunodeficiency disorder
Immediate family member with a known or suspected Familial Cancer Syndrome
Clinically significant and active bacterial, viral, fungal, or parasitic infection