Health Technology Wales (HTW) review guidance 3 years after publication to establish if reassessment is warranted because, for example, new evidence has become available. Since the publication of guidance on flash glucose monitoring (FGM) in 2018, HTW introduced a patient and public involvement (PPI) process with novel approaches to flexible engagement. This enabled HTW to include three streams of patient evidence into the review of FGM devices.

HTW’s Patient and Public Involvement Standing Group (PPISG) considered appropriate methods of engagement using the HTW Patient and Public Involvement Mechanism Tool. This tool considers the nature of the health technology, the presence of appropriate patient organizations and questions that can be put to patients, as well as other approaches for obtaining patient evidence.

HTW contacted Diabetes Cymru and met with them to discuss contributing to the appraisal of FGM devices. Diabetes Cymru produced a patient submission summarizing the experiences of their patient network, with particular focus on the expansion of the technology to closed-loop insulin systems. Diabetes Cymru later attended HTW’s Appraisal Panel committee and gave a presentation. Additionally, HTW conducted a patient evidence literature review. This review summarized published qualitative studies on a range of perspectives, including carer perspectives, family perspectives, children and adolescences perspectives as well as considerations from specific environments, such as schools, workplaces, homes, care homes and communities. In addition to new clinical and cost effectiveness evidence, this PPI input was used to formulate new guidance recommending more widespread adoption of FGM.

The introduction of flexible approaches to PPI enabled HTW to gain patient evidence from multiple sources. This ensured greater patient representation and a more detailed understanding of the role of FGM devices across different patient communities. This added considerable richness to the patient evidence, which is vital to understand the everyday impacts of FGM and its use amongst patients. Combining flexible PPI with the new clinical and cost effectiveness evidence resulted in a change in the original guidance recommendation.