This is a Phase 1/2, open-label, multicenter study to determine the efficacy and safety of JCAR017 in adult subjects with relapsed or refractory CLL or SLL. The study will include a Phase 1 part to determine the recommended dose of JCAR017 monotherapy in subjects with relapsed or refractory CLL or SLL, followed by a Phase 2 part to further assess the efficacy and safety of JCAR017 monotherapy treatment at the recommended dose. A separate Phase 1 cohort will assess the combination of JCAR017 and concurrent ibrutinib. Another separate Phase 1 cohort will assess the combination of JCAR017 and concurrent venetoclax. In all subjects, the safety, efficacy, and pharmacokinetics (PK) of JCAR017 will be evaluated.
CLL with an indication for treatment based on the Investigator's opinion and measurable disease, or
SLL (lymphadenopathy and/or splenomegaly and < 5×10^9 CD19+ CD5+ clonal B lymphocytes/L [< 5000/µL] in the peripheral blood at diagnosis with measurable disease that is biopsy-proven SLL)
Subjects (other than those in the ibrutinib + JCAR017 combination therapy and DEME cohort) must have received and failed Bruton tyrosine kinase inhibitor (BTKi) treatment or have been deemed ineligible for BTKi therapy.
Monotherapy cohorts EXCEPT DEME cohort: Subjects with CLL or SLL and high-risk features must have failed at least 2 lines of prior therapy.
Subjects with known active central nervous system (CNS) involvement by malignancy. Those with prior CNS disease that has been effectively treated will be eligible if treatment was completed at least 3 months prior to enrollment with no evidence of symptomatic disease and stable abnormalities on repeat imaging.
History of another primary malignancy that has not been in remission for at least 2 years. (The following are exempt from the 2-year limit: nonmelanoma skin cancer, completely resected stage 1 solid tumor with low risk for recurrence, curatively treated localized prostate cancer, cervical carcinoma in situ on biopsy or a squamous intraepithelial lesion on Pap smear, and in situ breast cancer that has been completely resected.)
Subjects with Richter's transformation
Prior treatment with any gene therapy product