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Reporting of genetic diagnoses in multidisciplinary intellectual disability care2718facilities or care providers, such as in the transition from pediatric to adult care. Due to privacy regulations, genetic results are usually only sent to the referring physician. Also, letters from clinical geneticists were often lacking in medical files, and genetic findings were sometimes unclear or incorrectly described by the care provider. Additional genetic variants of clinical relevance were not reported, although these have also been identified in genetic syndromes and ID.38 As this was a retrospective study in a clinical setting, we could not examine the diagnostic yield of genetic testing.39We encountered difficulties related to inconsistent use of terminology and the lack of a uniform registration in the electronic care system where diagnoses could be found. Genetic disorders are often known by multiple names, possibly resulting in confusion and illustrating the importance of education amongst care providers. ConclusionThis study showed variable reporting of genetic diagnoses in multidisciplinary ID care files. Type of reporting care provider, milder levels of ID, a higher age, and no family member as legal representative were associated with less reporting and may consequently limit personalized multidisciplinary care. Due to fast advances in the field of diagnostics and targeted interventions, closer collaboration between academia and care organizations is necessary to improve integration of knowledge into daily multidisciplinary practice. Increased genetic testing and adequate reporting of test results over life may improve patient support, outcomes, and allow targeted therapies and surveillance. AcknowledgementsThe authors would like to thank ‘s Heeren Loo and Johan Brands for contributing to the data acquisition. FundingThe study is financially enabled by the Amsterdam UMC and care organization ‘s Heeren Loo. Annelieke Muller sHL.indd 271 14-11-2023 09:08