Objectives: Health technology assessment (HTA) has to innovate to best support changing health system environments and to help provide access to valuable innovation under fiscal constraint. Methods: Issues associated with changing HTA paradigms were identified through scoping and explored through deliberation at a meeting of industry and HTA leaders. Results: Five broad areas of change (engagement, scientific dialogue, research prioritization, adaptive approaches, and real world data) were identified. The meeting focused on two themes derived from these: re-thinking scientific dialogue and multi-stakeholder engagement, and re-thinking value, affordability, and access. Earlier and ongoing engagement to steer the innovation process and help achieve appropriate use across the technology lifecycle was perceived as important but would be resource intensive and would require priority setting. Patients need to be involved throughout, and particularly at the early stages. Further discussion is needed on the type of body best suited to convening the dialogue required. There was agreement that HTA must continue to assess value, but views differed on the role that HTA should play in assessing affordability and on appropriate responses to challenges around affordability. Enhanced horizon scanning could play an important role in preparing for significant future investments. Conclusions: Early and ongoing multi-stakeholder engagement and revisiting approaches to valuing innovation are required. Questions remain as to the most appropriate role for HTA bodies. Changing HTA paradigms extend HTA's traditional remit of being responsive to decision-makers demands to being more proactive and considering whole system value.Keywords: Health technology assessment, Patient participation, Stakeholder engagement, Financial management, Value-based purchasing Often, the purpose of health technology assessment (HTA) is to inform decisions about the coverage/reimbursement and use of new and existing health interventions, typically within health systems with limited resources to acquire and deliver them (1). HTA should be tailored to the types of decisions it is informing and reflect the needs and realities of the health and innovation systems within which it is operating. This is reflected in a growing recognition that it should take account of the lifecycle of health system innovation to be more impactful (2;3).In recent years, there have been fundamental changes in approaches to health system delivery, influenced by increasing public demand and patient influence, limited resources, new governance models, developments in information and communication technology, and new service delivery models seeking to improve quality and efficiency (4). Commercial innovators have similarly created new approaches to technology development, exploiting scientific advances, and working more closely with health system regulators and administrators to develop the evidence of safety and effectiveness that they seek (5).The Health Technology Assessment internatio...