Differences in evidentiary requirements for oncology drug effectiveness assessments among six European health technology assessment bodies - can alignment be improved?

OBJECTIVES: Evidentiary requirements for relative effectiveness assessment vary among European health technology assessment (HTA) bodies, affecting the time to HTA decision-making and potentially delaying time to patient access. Improved alignment may reduce this time; therefore, we aim to analyze the differences in evidentiary requirements for oncology drug assessments among European HTA bodies and provide recommendations toward an increased alignment. METHODS: Interviews were conducted with stakeholders in drug assessments of Italy, the Netherlands, Poland, Portugal, England and Wales, and Sweden about evidentiary requirements for several subdomains to identify differences and obtain recommendations for addressing differences. The interview results were analyzed on degrees of evidence acceptability per HTA body and alignment on evidentiary requirements among HTA bodies. RESULTS: Subdomains demonstrating noteworthy differences concerned the acceptability of extrapolation to other populations, class effects, progression-free survival and (other) surrogate endpoints as outcomes, the absence of quality-of-life data, single-arm trials, cross-over trial designs, short trial duration, and the clinical relevance of effect size. CONCLUSION: Alignment can be enhanced to reduce time to decision-making and to improve equity in patient access. Proposed recommendations to achieve this included joint early dialogues, intensified collaboration and exchange between countries, joint relative effectiveness assessments, and the use of access agreements.