Publisher DOI: 10.1016/j.eclinm.2023.102260
Title: Effect of the addition of a mental health specialist for evaluation of undiagnosed patients in centres for rare diseases (ZSE-DUO): a prospective, controlled trial with a two-phase cohort design
Language: English
Authors: Hebestreit, Helge 
Lapstich, Anne-Marie 
Brandstetter, Lilly 
Krauth, Christian 
Deckert, Jürgen 
Haas, Kirsten 
Pfister, Lisa 
Witt, Stefanie 
Schippers, Christopher 
Dieris-Hirche, Jan 
Maisch, Tim 
Tüscher, Oliver 
Bârlescu, Lavinia 
Berger, Alexandra 
Berneburg, Mark 
Britz, Vanessa 
Deibele, Anna 
Graeßner, Holm 
Gündel, Harald 
Heuft, Gereon 
Lücke, Thomas 
Mundlos, Christine 
Quitmann, Julia  
Rutsch, Frank 
Schubert, Katharina 
Schulz, Jörg Bernhard 
Schweiger, Susann 
Zeidler, Cornelia 
Zeltner, Lena 
de Zwaan, Martina 
metadata.local.contributorCorporate.other: ZSE-DUO Working Group 
Keywords: Diagnostic services; Medically unexplained symptoms; Mentalhealth; Patient care team; Rare diseases
Issue Date: 6-Oct-2023
Publisher: Elsevier
Journal or Series Name: EClinicalMedicine 
Volume: 65
Abstract: 
Background: People with complex symptomatology but unclear diagnosis presenting to a centre for rare diseases (CRD) may present with mental (co-)morbidity. We hypothesised that combining an expert in somatic medicine with a mental health specialist working in tandem will improve the diagnostic outcome. Methods: Patients aged 12 years and older who presented to one of the 11 participating German CRDs with an unknown diagnosis were recruited into this prospective cohort trial with a two-phase cohort design. From October 1, 2018 to September 30, 2019, participants were allocated to standard care (SC, N = 684), and from October 1, 2019 to January 31, 2021 to innovative care (IC, N = 695). The cohorts consisted mainly of adult participants with only a minority of children included (N = 67). IC included the involvement of a mental health specialist in all aspects of care (e.g., assessing medical records, clinic visits, telehealth care, and case conferences). Clinicaltrials.gov identifier: NCT03563677. Findings: The proportion of patients with diagnoses established within 12 months after the first visit to the CRD explaining the entire symptomatology (primary outcome) was 19% (N = 131 of 672) in the SC and 42% (N = 286 of 686) in the IC cohort (OR adjusted for centre effects 3.45 [95% CrI: 1.99-5.65]). The difference was mainly due to a higher prevalence of mental disorders and non-rare somatic diseases in the IC cohort. The median time to explaining diagnoses was one month shorter with IC (95% CrI: 1-2), and significantly more patients could be referred to local regular care in the IC (27.5%; N = 181 of 659) compared to the SC (12.3%; N = 81 of 658) cohort (OR adjusted for centre effects 2.70 [95% CrI: 2.02-3.60]). At 12-month follow-up, patient satisfaction with care was significantly higher in the IC compared to the SC cohort, while quality of life was not different between cohorts. Interpretation: Our findings suggested that including a mental health specialist in the entire evaluation process of CRDs for undiagnosed adolescents and adults should become an integral part of the assessment of individuals with a suspected rare disease. Funding: The study was funded by the Global Innovation Fund from the Joint Federal Committee in Germany (Innovationsfonds des Gemeinsamen Bundesausschusses), grant number 01NVF17031.
URI: https://hdl.handle.net/20.500.12738/17195
ISSN: 2589-5370
Review status: This version was peer reviewed (peer review)
Institute: Department Soziale Arbeit 
Fakultät Wirtschaft und Soziales 
Type: Article
Additional note: article number: 102260
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