Navigating the diagnostic journey of epidermolysis bullosa - a qualitative study on the lived experiences and needs of parents and patients.

BACKGROUND: Epidermolysis bullosa (EB) concerns a heterogeneous group of rare genetic skin fragility disorders that result in chronic blistering and wounding. EB significantly impacts the daily lives of patients with EB, as well as their families. While advances in diagnostics are improving the speed and accuracy of EB diagnosis, little is known about the experiences and needs of parents and patients throughout their diagnostic journey. OBJECTIVES: In this qualitative study, we explore the parent and patient perspective on the EB diagnostic trajectory to gain an in-depth understanding of their lived experiences and needs. METHODS: Participants were parents of paediatric patients (n=18), and adult patients (n=8) recruited from the Dutch EB Registry. After purposive sampling, they participated in semi-structured interviews via video-calls to discuss their personal diagnostic trajectory and the subsequent impact of EB diagnosis on their (family) life. Applying a constructivist approach, a reflexive thematic analysis was executed to facilitate a dynamic and iterative process, involving inductive open coding of transcripts and constant comparison of data. RESULTS: Ten major themes were developed, representing three distinct groups: (i) parents of children with JEB and RDEB, (ii) parents of children with EBS and DDEB, and (iii) adult patients with localized EB. The EB diagnostic process appeared to have a diversity of emotional consequences, varying from desperation and uncertainty about the future, to clarification and confirmation. The urgent need for a timely diagnosis and accurate prognosis was emphasized, particularly by parents of children with extensive presentation. Both parents and patients expressed shortcomings in clinical practice, with severity ratings in current EB disease terminology in particular seeming to have an adverse impact on illness perception, healthcare-seeking behaviour, research participation, and engagement in peer support. CONCLUSIONS: This study describes the lived experience and needs of parents of children and adult patients during the diagnostic process of EB. We show an urgent need to accelerate diagnostics and imply that the EB community should continue working towards ever faster diagnosis, public awareness, and education. While guiding patients along the diagnostic journey, clinicians should focus their support strategies on tailored medical communication, while refraining from value-connoted wording.

Heterogeneity of reported outcomes in epidermolysis bullosa clinical research: a scoping review as a first step towards outcome harmonization.

BACKGROUND: Epidermolysis bullosa (EB) is a rare, genetically and clinically heterogeneous group of skin fragility disorders. No cure is currently available, but many novel and repurposed treatments are upcoming. For adequate evaluation and comparison of clinical studies in EB, well-defined and consistent consensus-endorsed outcomes and outcome measurement instruments are necessary. OBJECTIVES: To identify previously reported outcomes in EB clinical research, group these outcomes by outcome domains and areas and summarize respective outcome measurement instruments. METHODS: A systematic literature search was performed in the databases MEDLINE, Embase, Scopus, Cochrane CENTRAL, CINAHL, PsycINFO and trial registries covering the period between January 1991 and September 2021. Studies were included if they evaluated a treatment in a minimum of three patients with EB. Two reviewers independently performed the study selection and data extraction. All identified outcomes and their respective instruments were mapped onto overarching outcome domains. The outcome domains were stratified according to subgroups of EB type, age group, intervention, decade and phase of clinical trial. RESULTS: The included studies (n = 207) covered a range of study designs and geographical settings. A total of 1280 outcomes were extracted verbatim and inductively mapped onto 80 outcome domains and 14 outcome areas. We found a steady increase in the number of published clinical trials and outcomes reported over the past 30 years. The included studies mainly focused on recessive dystrophic EB (43%). Wound healing was reported most frequently across all studies and referred to as a primary outcome in 31% of trials. Great heterogeneity of reported outcomes was observed within all stratified subgroups. Moreover, a diverse range of outcome measurement instruments (n = 200) was identified. CONCLUSIONS: We show substantial heterogeneity in reported outcomes and outcome measurement instruments in EB clinical research over the past 30 years. This review is the first step towards harmonization of outcomes in EB, which is necessary to expedite the clinical translation of novel treatments for patients with EB.

Identifying Epidermolysis Bullosa Patient Needs and Perceived Treatment Benefits: An Explorative Study Using the Patient Benefit Index.

Epidermolysis bullosa (EB) is a genetic blistering skin condition for which no cure exists. Symptom alleviation and quality of life are therefore central to EB care. This study aimed to gain insight into EB patient needs and benefits from current clinical care. Two questionnaires were administered cross-sectionally to adult EB patients at the Dutch expertise centre for blistering diseases. Patient needs and benefits were analyzed using the patient benefit index survey (PBI-S). Ancillary data were compiled pertaining to self-reported EB severity, pain and pruritus, as well as current and previous treatments. In total, 104 participants were included (response rate 69.8%). Sixty-eight participants comprised the analyzed cohort (n = 36 omitted from analysis). The needs given the highest importance were to get better skin quickly (64.7%) and to be healed of all skin alterations (61.8%). A positive correlation between pain and EB severity and the importance of most needs was observed. Minimal clinically important differences within the PBI-S, relating to reported benefits from clinical care, were reported by 60.3% of the cohort. This study highlights a discrepancy between patient needs and feasible treatment outcomes. Utilizing the PBI-S in conjunction with well-established multidisciplinary care may catalyze the process of tailoring treatments to the needs of individual patients.