Adapting a palliative care intervention for people with advanced cancer across seven European countries: the...

International adaptation of healthcare interventions requires sensitivity to local contexts, especially in palliative care, where healthcare systems and cultural expectations about end of life differ widely. Pal-Cycles is an intervention that aims to improve transitions in care for patients with advanced cancer. This intervention was adapted for implementation in a stepped wedge trial across seven European countries (Germany, Hungary, the Netherlands, Poland, Portugal, Romania and the UK). This paper aims to illustrate the process of adapting a palliative care intervention (Pal-Cycles) to meet the needs of those using healthcare settings across seven European countries.

Adapted nominal group techniques (a structured group method that supports idea generation, discussion, and prioritisation) were used, involving both in-country and cross-country adaptation meetings focused on the five key components of the original intervention design, to ensure cultural sensitivity and best fit All countries established a group of clinicians and all except two countries (Portugal and Hungary) involved groups of patients and families. The adaptation process occurred in a series of 5 meetings, which were mostly held online to accommodate participants' schedules.

A total of 36 clinicians, 14 patients or family members, and 16 facilitators participated in the adaptation process over a four-month period. Structured guidance and iterative consultation meetings ensured that the final intervention was both standardised and adaptable to each country's healthcare setting. We produced a standardised intervention manual based on a theory of change model, ensuring consistency across countries while allowing for contextual flexibility.

This paper provides guidance for future cross-cultural adaptation of palliative care interventions, illustrating the value of detailed methodological planning, structured guidance, and multi-stakeholder engagement in the adaptation process.

ClinicalTrials.gov NCT06259136, registered on 6 February 2024.