Abstract: Provided are methods for determining the risk of toxicity (e.g., neurotoxicity) and/or the likelihood of response to a cell therapy. In some aspects, the methods generally involve assessing parameters or biomarkers (e.g., blood analytes) that are associated with toxicity and/or response. In some aspects, the methods relate to adoptive cell therapy involving the administration of doses of cells for treating subjects with certain B cell malignancies, such as chronic lymphocytic leukemia (CLL), such as relapsed or refractory CLL, or small lymphocytic lymphoma (SLL). The cells for the adoptive cell therapy generally express recombinant receptors such as chimeric antigen receptors (CARs). In some aspects, the methods can be used to identify or select subjects for treatment, for example, with a cell therapy.

Abstract: Provided are adoptive cell therapy methods involving the administration of doses of cells for treating disease and conditions, including certain B cell malignancies. The cells generally express recombinant receptors such as chimeric antigen receptors (CARs). In some embodiments, the methods are for treating subjects with chronic lymphocytic leukemia (CLL) and small lymphocytic lymphoma (SLL). In some embodiments, the methods are for treating subjects with relapsed or refractory CLL and SLL. Also provided are articles of manufacture and prophylactic treatments in connection with adoptive therapy methods.