Late-stage development is where timelines tighten, complexity increases, and the demand for speed becomes most visible. Execution is often treated as the lever compressed timelines, parallel workstreams, faster decision-making.
But speed is rarely created at that stage. It is shaped earlier, through decisions made when flexibility is still high and the cost of change is lower.
When questions around process definition, comparability, scale-up, and supply are addressed early, they tend to remain manageable. When they surface later, they can become gating issues that slow progress when timelines are least forgiving.
Programs that move forward more efficiently are not simply better executed. They are structured earlier with late-phase requirements in mind.
Speed in complex drug development is the late-phase outcome of early-phase decisions
How early development decisions shape how quickly complex programs move in later phases
By Paul Jorjorian, VP Development and Scientific Solutions, Thermo Fisher Scientific
Late in development, timelines often compress in ways that feel inevitable. Execution pressure rises just as complexity peaks, and teams are asked to move faster with less room for adjustment. At that point, speed is treated as an execution problem something to solve through tighter timelines or parallel workstreams.
But execution speed is rarely created in execution. More often, it is shaped much earlier by the timing and quality of upstream decisions.
As programs move from one phase to the next, questions begin to surface around process definition, comparability, scale-up readiness, and supply strategy. When those questions have been anticipated early, they tend to be manageable. When they emerge late, they can quickly become gating issues.
This dynamic isn’t about poor planning. It’s about decision timing.
Early in development, teams have flexibility. The cost of change is relatively low, and there is room to explore alternatives. Later on, the same changes carry higher financial, regulatory, and operational consequences. What once felt optional becomes urgent.
It’s understandable that customers defer certain decisions early, especially when data is still emerging. Preserving flexibility is often the right instinct. But deferral has a cost, and the price isn’t always visible until execution is underway.
When early-phase decisions are made with late-phase execution in mind, whether around process strategy, comparability pathways, or supply readiness, later phases unfold differently. Execution becomes faster not because teams are rushing, but because fewer obstacles appear when speed matters most.
Seen this way, execution speed is not something teams manufacture under pressure. It is the outcome of decisions made earlier with foresight and discipline.
That cause-and-effect relationship underpins Thermo Fisher Scientific’s Accelerator™ Drug Development as a defining operating model of this moment. Built as a deeply integrated CDMO–CRO approach, it is designed to connect early scientific and development decisions with late-stage manufacturing and clinical execution so speed emerges from alignment rather than urgency.
To date, Accelerator Drug Development has supported hundreds of development programs for biotech and pharma customers, reflecting a growing recognition that execution speed, risk, and decision discipline must be addressed together, not sequentially.
