The ERN BOND brings together all rare diseases, essentially congenital, chronic and of genetic origin, that affect cartilage, bones and dentin. This considerable group of diseases present a significant variation in clinical outcomes and limited research program are currently available to clarify their physiopathological bases.
This large field may be shared in two main categories, skeletal dysplasia and metabolic bone diseases. These 2 categories themselves are subdivided in several thematic and sub thematic groups.
The impossibility to consider all these diseases led our group to choose 11 main thematic groups, and, among these groups, to emphasize 3 major diseases that will be prioritized, serving as a starter/template for the 2 first years: Achondroplasia, Osteogenesis Imperfecta and X-linked hypophosphatemia. The rationale for choosing these leading diseases is based on 5 central arguments: 1/ disease frequency 2/ gravity of some devastating disorders, requiring an urgent improvement in early diagnosis and management 3/ difficulty and complexity of the diagnosis, requiring a dissemination of the diagnostic expertise and modern tools; 4/ difficulty and complexity in the treatment and management art, requiring also to ensure a better diffusion of symptomatic treatment or surgical techniques ; 5/ current emergence of new drugs from basic research through translational research, or through biopharmaceutics research and development collaborations. Although prioritization of some diseases is mandatory for the implementation of BOND, it will of course be important to keep a larger view, and progressively to open the field to other ultrarare/“forgotten” other bone diseases ERN. BOND will establish European specific pathways, research programmers, and specific outcomes for patients in order to realize a European Health System.




The main ambition of the ERN BOND is to implement measures that facilitate multidisciplinary, holistic, continuous, patient-centred and participative care provision to people living with rare bone diseases (RBD), supporting them in the full realisation of their fundamental human rights. In particular, ERN BOND aim to ensure that people living with a RBD are afforded the same standards of care and support as the ones available to other citizens with similar requirements. To meet this goal, ERN BOND gathers European professionals highly specialized in the field of RBD for both scientific research and multidisciplinary care to increase knowledge on RDs, to improve healthcare quality and patient safety, to increase access to ultra specialized medical expertise and accessible information beyond national borders, in accordance with Directive 2011/24/EU.
ERN BOND aspiration is to support patients affected by rare bone diseases and their families, to increase their capacity to undertake a participative role in care provision, to set priorities and to participate in decisions regarding their care plan and their life project, in accordance with EUCERD recommendations (2013).



The main ambition of the ERN BOND is to implement measures that facilitate multidisciplinary, holistic, continuous, patient-centred and participative care provision to people living with rare bone diseases (RBD), supporting them in the full realisation of their fundamental human rights. To meet this goal, BOND gathers European professionals highly specialized in the field of RBD for both scientific research and multidisciplinary care to increase knowledge on RDs, to improve healthcare quality and patient safety, to increase access to ultra specialized medical expertise and accessible information beyond national borders. ERN BOND aspiration is to support patients affected by RBD and their families, to increase their capacity to undertake a participative role in care provision, to set priorities and to participate in decisions regarding their care plan and their life project. BOND will bring rapid interchange of information, skills and practice to shorten time to diagnosis, and treatment, in collaboration with Patients Representatives (ePAGs). Efforts to target less developed affiliate partners, where the gap between existing provision and that aspired to through BOND is largest, will be carried, meeting the target of improving healthcare in ALL Members States.


The European Registry for Rare Bone and Mineral Conditions (EuRR-Bone) aims to realise improved, harmonised healthcare for people living with rare bone and mineral conditions (RBMCs) across Europe. Our focus includes over 150 severe rare bone diseases that affect cartilage, bones and dentin and more than 40 severe rare diseases affecting phosphate and calcium metabolism. In this project, we will establish the first pan-European registry in RBMCs.

RBMCs constitute a complex group of diseases with evident need for better and more harmonised care. The lack of natural history data is significant, and the quality of care and expertise varies across regions and in many countries is still unclear. Depending on first symptoms and local healthcare processes, a wide variety of healthcare specialists can be involved in the process. Until recently, there was limited cross-disciplinary alignment: each discipline had its own network, conference, guidelines and even registries. The European Reference Network on Bone Disorders (ERN BOND) has taken the lead to better organise the field, to harmonise and improve RBMCs healthcare.
Specifically, in this project, a core group of ERN BOND healthcare providers, affiliated centres and experts will:

• Establish a centralised registry for RBMCs within the scope of ERN BOND in collaboration with the already established European Registry for Rare Endocrine Conditions, EuRRECa, covering a core longitudinal minimal data set to capture their natural history from both clinician and patient perspectives.
• Establish four disease specific modules on Fibrous Dysplasia/McCune Albright syndrome (FD/MAS), Osteogenesis Imperfecta (OI), Rare Hypophosphatemia and Achondroplasia (ACHO), that capture genetic, clinical and patient related outcome measures in a scalable manner to other RBMCs.
• Provide a platform that enables detailed local, disease-specific registries on rare bone and mineral disorders to connect to EuRR-Bone.




The ERN BOND brings together all rare diseases, essentially congenital, chronic and of genetic origin, that affect cartilage, bones and dentin. This large field may be shared in two main categories, skeletal dysplasia and metabolic bone diseases. These 2 categories themselves are subdivided in several thematic and sub thematic groups.
The main ambition of the BOND ERN is to implement measures that facilitate multidisciplinary, holistic, continuous, patient-centred and participative care provision to people living with rare bone diseases (RBD), supporting them in the full realisation of their fundamental human rights. In particular, BOND ERN aims to ensure that people living with a RBD are afforded the same standards of care and support as the ones available to other citizens with similar requirements. To meet this goal, BOND ERN gathers European professionals highly specialized in the field of RBD for both scientific research and multidisciplinary care to increase knowledge on RDs, to improve healthcare quality and patient safety, to increase access to ultra specialized medical expertise and accessible information beyond national borders, in accordance with Directive 2011/24/EU.
BOND ERN aspiration is to support patients affected by rare bone diseases and their families, to increase their capacity to undertake a participative role in care provision, to set priorities and to participate in decisions regarding their care plan and their life project, in accordance with EUCERD recommendations (2013).
BOND ERN aims to assess patients and families accessibility to and appropriateness of healthcare and social services. At the same time, the Network seeks to evaluate healthcare, social effectiveness, cost-effectiveness of actions implemented, measuring their impact on the quality of life of people living with RD.

