Blog
The New Reality of Early Phase Clinical Trials
How rising pressures and adaptive designs are reshaping early phase clinical trials.
Elizabeth Allen
Raymond Cook
Joanne Emanuel
Jochen Zeschky
Feb 27, 2026

Early phase clinical trials are being redefined by forces far beyond scientific considerations.

Cost oversight driven by Most‑Favored‑Nation policies, Inflation Reduction Act provisions, and broader international reference pricing, is intersecting with geopolitical dynamics such as conflicts, tariffs, and evolving U.S.–China relations. Together, these pressures are reshaping expectations for how quickly and confidently sponsors must generate early evidence.

As these forces converge, early phase research is moving away from traditional, sequential models and toward more integrated approaches designed to produce high‑quality insights earlier in development.

Sponsors are therefore under increasing pressure to operate efficiently and make informed go/no‑go decisions sooner, while maintaining the highest safety standards.


Rising pressures are forcing new approaches

These economic, political, and regulatory pressures are reducing tolerance for delays or ambiguous data. Early phase programs must now generate clear, decision‑ready evidence that protects downstream investment and maintains program momentum.

As competition intensifies across therapeutic areas, speed alone is no longer enough. Early phase research must also deliver scientific clarity, operational efficiency, and confidence in advancement.


Opportunity within complexity

Despite the challenges, today’s environment creates new opportunities to improve evidence generation.

Several approaches are giving sponsors the ability to detect insights earlier and more efficiently, including:

  • Adaptive and hybrid trial designs
  • Model‑informed drug development (MIDD)
  • AI‑augmented analytics

These methodologies support earlier detection of safety and efficacy signals, helping teams make more informed decisions while improving both safety oversight and operational efficiency.

Customized adaptive designs in practice

One of the most powerful responses to today’s demands is the adoption of customized adaptive designs.

These frameworks consolidate research steps typically conducted separately and, when appropriate, allow healthy volunteers and patient populations to be evaluated within a single design. This supports more comprehensive data generation earlier in development.

By allowing protocols to adjust based on accumulating data, such as dose modification or cohort resizing, adaptive designs enable faster learning and more responsive decision‑making.

“The use of hybrid adaptive trial designs provide sponsors and their CRO partners unprecedented opportunities to accelerate informed decision-making that can bring critical new treatments to market faster.”

Why rigor and expertise matter more than ever

Successfully designing and delivering adaptive early phase trials demands significant expertise across:

  • Pharmacology
  • Quantitative sciences
  • Regulatory strategy
  • Clinical operations

Protocols must be carefully customized to the molecule, therapeutic area, and participant population, with built‑in safeguards to protect safety while enabling efficient learning.

When implemented thoughtfully, customized adaptive designs provide sponsors with a powerful way to navigate uncertainty. They enable earlier insight, support smarter decisions, and help balance the dual imperatives of speed and safety that define modern early phase development.


Where to go from here

If you’re exploring how to strengthen your early phase strategy or need support accelerating evidence‑based decisions, contact IQVIA today.

Our early phase experts can help you navigate rising complexity, optimize study design, and guide your molecule’s path forward with clarity and confidence.

Learn more at www.iqvia.com/earlyphase

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