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Effective TC prevents care disruptions and supports medical and psychosocial needs. However, gaps in communication, a shortage of adult RBMC specialists, and challenges in navigating adult healthcare necessitate standardized care. This study aimed to develop consensus-based recommendations for TC in RBMCs, focusing on best practices for seamless transition and patient empowerment. A two-round Delphi survey (September 2023\u2013April 2024) was conducted among European RBMC experts, including 3 pediatric and 8 adult clinicians and 3 patient representatives from the European Calcified Tissue Society (ECTS). The panel formulated and refined statements through literature review and iterative scoring. Statements reaching\u2009\u2265\u200970% consensus were retained. A total of 81 statements were finalized across seven domains: initiation and planning, TC requirements, patient empowerment, organization and communication, service infrastructure and funding, and clinical care. Consensus was achieved on 64 out of 81 statements, with strong agreement on general and RBMC-specific recommendations. Key priorities included structured coordination among healthcare providers and a patient-centered approach that fosters self-advocacy and self-management. This Delphi consensus provides a structured framework for TC in young persons with RBMCs, emphasizing multidisciplinary care and patient empowerment. Future studies should assess the feasibility and impact of these guidelines across diverse healthcare systems.<\/jats:p>","DOI":"10.1007\/s00223-025-01382-w","type":"journal-article","created":{"date-parts":[[2025,5,9]],"date-time":"2025-05-09T14:35:43Z","timestamp":1746801343000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Transition Care for Young Persons with Rare Bone Mineral Conditions: A Consensus Recommendation from the ECTS Rare Bone Disease Action Group"],"prefix":"10.1007","volume":"116","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1793-4603","authenticated-orcid":false,"given":"Corinna","family":"Grasemann","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joline","family":"Wernsmann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5035-127X","authenticated-orcid":false,"given":"Natasha M.","family":"Appelman-Dijkstra","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chloe","family":"Morgan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tenna Toft","family":"Sylvest","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adalbert","family":"Raimann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8366-8625","authenticated-orcid":false,"given":"Heide","family":"Siggelkow","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6885-3953","authenticated-orcid":false,"given":"Willem F.","family":"Lems","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5172-5402","authenticated-orcid":false,"given":"Serap","family":"Turan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9186-3423","authenticated-orcid":false,"given":"M. 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Appelman-Dijkstra, Chloe Morgan, Tenna Toft Sylvest, Adalbert Raimann, Heide Siggelkow, Willem F Lems, Serap Turan, M. Carola Zillikens, Lena Lande Wekre, In\u00eas Alves, Martine Cohen Solal, Maria P. Yavropoulou and Gavin Clunie declares no conflict of interest with this work.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"No animals were involved in this study, thus a statement on animal rights is not applicable. No indivuals (humans) other than the authors contributed to this study, thus a statement on human rights and informed consent is not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Human and Animal Rights and Informed consent"}}],"article-number":"73"}}