Turnstone Biologics (NASDAQ: TSBX)presented preclinical data on their Selected TIL technology at the 2024 SITC Annual Meeting. The research focuses on selectively expanding tumor-reactive T cells for solid tumor treatment. Two key studies were presented: one demonstrating successful TIL expansion from gastric tumors and enhancement of adoptive cell therapy, and another revealing a potential biomarker method to predict tumor-reactive T cell expansion success. The findings support the continued clinical development of TIDAL-01, currently in Phase 1 trials, and suggest that reactive TIL enrichment protocols could improve solid tumor treatment outcomes.