The view of experts on initiatives to be undertaken to promote equity in the access to orphan drugs and specialised care for rare diseases in Spain: A Delphi consensus

A systematic review of moral reasons on orphan drug reimbursement

BACKGROUND

The number of market approvals of orphan medicinal products (OMPs) has been increasing steadily in the last 3 decades. While OMPs can offer a unique chance for patients suffering from rare diseases, they are usually very expensive. The growing number of approved OMPs increases their budget impact despite their low prevalence, making it pressing to find solutions to ethical challenges on how to fairly allocate scarce healthcare resources under this context. One potential solution could be to grant OMPs special status when considering them for reimbursement, meaning that they are subject to different, and less stringent criteria than other drugs. This study aims to provide a systematic analysis of moral reasons for and against such a special status for the reimbursement of OMPs in publicly funded healthcare systems from a multidisciplinary perspective.

RESULTS

With a systematic review of reasons, we identified 39 reasons represented in 243 articles (scientific and grey literature) for and against special status for the reimbursement of OMPs, then categorized them into nine topics. Taking a multidisciplinary perspective, we found that most articles came from health policy (n = 103) and health economics (n = 49). More articles took the position for a special status of OMPs (n = 97) than those against it (n = 31) and there was a larger number of reasons identified in favour (29 reasons) than against (10 reasons) this special status.

CONCLUSION

Results suggest that OMP reimbursement issues should be assessed and analysed from a multidisciplinary perspective. Despite the higher occurrence of reasons and articles in favour of a special status, there is no clear-cut solution for this ethical challenge. The binary perspective of whether or not OMPs should be granted special status oversimplifies the issue: both OMPs and rare diseases are too heterogeneous in their characteristics for such a binary perspective. Thus, the scientific debate should focus less on the question of disease prevalence but rather on how the important variability of different OMPs concerning e.g. target population, cost-effectiveness, level of evidence or mechanism of action could be meaningfully addressed and implemented in Health Technology Assessments.

The implementation of health technology assessment principles in public decisions concerning orphan drugs

PURPOSE

Over the last few years, the share of public spending for orphan drugs (ODs) has increased in several western countries, raising concern on the exemptions granted to this sector with respect to the implementation of health technology assessment (HTA) principles. The aim of this paper is to shed light on both the HTA criteria adopted and the international agreements implemented in the OD regulation, given the new challenges imposed on western countries by a growing number of therapies for rare diseases.

METHODS

We carried out a literature review to analyse the development of the international debate on the adaptability of HTA criteria for the OD assessment and regulation. The time span lies between January 1990 and May 2018, and the policies considered relate to both market authorization and reimbursement decisions within western countries. We focus specifically on HTA criteria in some of the dimensions included in the Core Model of the European net for HTA (EUnetHTA).

RESULTS

OD high prices, the absence of clarity on the possible high revenues realized by the distribution of a new OD outside the national borders, the risk that - once marketed - a new OD can be used to treat common diseases, are all issues that raise concern on OD regulation and have to be carefully monitored by policymakers in the next future.

CONCLUSIONS

Across western countries, the preferential track granted to ODs in the implementation of HTA principles is not homogeneous, but fragmented and differentiated. The need for common rules at an international level is underlined, with a view to assessing the sustainability of a sector which, due to this regulatory void, can lend itself to producers' strategic and opportunistic behaviours.