Given time and resource constraints, health technology assessments (HTAs) should avoid duplicating prior HTAs. This abstract describes the experience of the Agency for Care Effectiveness (ACE) with adapting and building on published HTAs of medical technologies to support efficient decision-making.

Upon defining the scope of an evaluation topic, searches were performed on reference agency websites and HTA networks, such as the International Network of Agencies for Health Technology Assessment, to identify relevant published HTAs. Identified reports were included for evidence synthesis if the inclusion criteria were met. If multiple relevant HTAs were identified, the most recent or comprehensive HTA identified was used as the foundational evidence base and supplemented by additional primary or secondary literature as needed. When deemed necessary, de novo economic models were developed. Where available, reimbursement decisions or recommendations from published HTAs and their applicability to Singapore’s context were also considered. Following ACE’s evaluations, the Ministry of Health Medical Technology Advisory Committee (MTAC) made subsidy recommendations.

To date, ACE has completed 54 HTA evaluations of medical technologies, 47 (87%) of which incorporated published HTA evidence. Although some MTAC recommendations were aligned with published HTAs, discrepancies were observed that were mainly attributed to evolution of the technology or evidence since publication of HTAs; different local clinical needs or management algorithms; and different local costs of the intervention and comparator. Key challenges in adapting published HTAs included differences in the target population and intervention or comparator in published HTAs, mixed recommendations from published HTAs, and non-English language reports, which may underscore the need to adapt published HTAs to Singapore’s context. To overcome some of these challenges, close consultation with stakeholders is critical to understand local clinical need and care pathways and to gather key information such as costs.

Published HTAs, when used as an evidence base and supplemented by evidence updates and local contextualization, allow for efficient and robust HTA to support decision-making.