The Slow Drift Toward Variability And The Case For Standardization

As advanced therapy programs grow, their workflows often reflect a patchwork of early decisions made to keep progress moving. Choices around sourcing, handling, timing, and cryopreservation may have solved short-term problems but were rarely designed to become long-term standards. Individually, these decisions seem insignificant. Collectively, they introduce variability that becomes visible as programs expand across sites and regions. This article examines how that slow drift toward inconsistency complicates later-stage development, particularly during preparation for regulatory review. Documentation may accurately reflect what happened, but fail to demonstrate a single, predictable system operating over time. Regulators are unlikely to flag isolated differences, yet patterns of inconsistency can signal a lack of control. The article argues that standardization is not about correcting past mistakes, but about realigning the workflow so future phases are built on a stable, coherent foundation. Addressing variability early enables scalability, clearer documentation, and greater confidence as programs advance.