Real-World Evidence & Biologics: Faster Formulary Decisions
Real-world evidence (RWE) is revolutionizing how payers make decisions about biologic formulary placement, ultimately shaping patient access and healthcare costs. This groundbreaking shift is providing crucial insights into how biologics perform in the real world, addressing gaps left by traditional clinical trials. From oncology to gene therapies, RWE, including administrative claims and clinical data, accelerates access to innovative treatments, and impacts every facet. Findings show that a majority of U.S.payers already leverage RWE. At News Directory 3, we explore how methodologies, such as propensity score matching, are vital for impactful analysis within this landscape. Discover what’s next as RWE drives more personalized and value-based care.
Real-World Evidence Increasingly Shapes Biologic Formulary decisions
Updated June 28,2025
Payers are increasingly relying on real-world evidence (RWE) to make informed decisions about biologic formulary placement,impacting patient access and healthcare costs. This shift addresses knowlege gaps left by randomized trials, offering insights into how biologics perform in routine clinical settings.

A survey revealed that 85% of U.S. payers use real-world evidence in oncology formulary decisions, notably when head-to-head trials are lacking. The most common sources of real-world data include administrative claims (79%),clinical/EHR data (69%),prospective observational cohorts (60%),and disease registries (37%).
Regulators and payers are embracing real-world evidence to accelerate access to innovative therapies, even with initial uncertainties. Some health technology assessment agencies now offer conditional formulary approval for high-cost biologics, pending further real-world outcomes data.
Advances in data analytics enable rapid-cycle analyses of clinical databases, providing actionable results in weeks. One health system partnered with an analytics firm to assess an analgesic’s real-world effect on surgical recovery, using millions of patient cases. This sped up formulary reviews and reduced clinician effort.
Real-world evidence case studies demonstrate its impact on formulary policy. Anthem, for example, analyzed claims outcomes for an oral asthma biologic versus standard inhalers. the real-world evidence showed fewer hospital visits and lower costs for patients on the oral drug who were nonadherent to inhalers. This led Anthem to maintain the oral agent on a preferred tier and remove prior authorization requirements.
Pharmacy benefit managers (PBMs) may require real-world data on gene therapy durability and safety before broad formulary coverage, given high upfront costs and limited long-term trial data. By analyzing initial patient outcomes, PBMs can target coverage to subpopulations most likely to benefit and expand access as real-world evidence confirms value.
A claims-based study of glucagon-like peptide-1 (GLP-1) agonists for obesity found only 15% of patients remained on therapy after two years,compared to 85% adherence in clinical trials. This data allows payers to adjust budget forecasts and revisit patient support programs to improve persistence.
Methodological considerations are crucial when using real-world evidence. data validity is paramount, requiring large, representative, accurate, and complete datasets. Observational comparisons are prone to biases, necessitating mitigation strategies like propensity score matching to balance patient characteristics. Statistical methods, such as multivariable regression and survival analysis, strengthen causal inferences.
The integration of real-world evidence offers benefits to all stakeholders. Payers gain predictability in budgeting and can justify coverage decisions with outcomes data. Manufacturers can demonstrate a drug’s real-world value sooner, accelerating formulary inclusion. patients gain more equitable access to biologics, as real-world evidence encompasses diverse populations often underrepresented in trials.
the use of high-quality real-world evidence is accelerating and refining decision-making for biologics, aligning formulary tiering, prior authorization, and step therapy protocols with real-world value.
What’s next
the continued integration of real-world evidence into formulary decisions will likely lead to more personalized and cost-effective healthcare, with a greater emphasis on patient outcomes and value-based contracts.
