CAR-TCR Summit 2025 Poster

Automated, Rapid, Point-of-Collection Flow Cytometry for Leukapheresis-Derived Starting Materials: Standardizing Immunophenotyping to Support Cell and Gene Therapy

Sheryl Brown-Lewis1, Elaine Than2, Amanda Trent2, Jacob van Vloten2, Felix Montero-Julian2
1American Red Cross / Biomedical Services, Philadelphia, PA, USA; 2Accellix, Inc., San Jose, CA
CAR-TCR Summit 2025 | September 23-26 | Boston, USA

Introduction – The Accellix Platform provides reliable results at the point of collection through automation, and operators require minimal training and no previous experience. We used a set of healthy donor leukopak samples to compare TBNK cell phenotyping results from the automated TBNK-16 (L) assay to a traditional flow cytometry method and found that cell frequencies correlated strongly, despite differences in instruments, workflow, panel design, and gating methods. Accellix TBNK-16 (L) assay was used to phenotype commercially-available reference material with low variability (CV < 7% across cell the cell phenotypes measured) and maintained accuracy and precision across different assay lots and operators. The Accellix Platform enables automated, standardized characterization of leukapheresis-derived starting material at the point of collection, minimizing process variability and subjective data analysis, and providing rapid leukopak phenotyping for cell therapy development and manufacturing.

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