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Propionic acidemia: clinical course and outcome in 55 pediatric and adolescent patients

  • BACKGROUND Propionic acidemia is an inherited disorder caused by deficiency of propionyl-CoA carboxylase. Although it is one of the most frequent organic acidurias, information on the outcome of affected individuals is still limited. STUDY DESIGN/METHODS Clinical and outcome data of 55 patients with propionic acidemia from 16 European metabolic centers were evaluated retrospectively. 35 patients were diagnosed by selective metabolic screening while 20 patients were identified by newborn screening. Endocrine parameters and bone age were evaluated. In addition, IQ testing was performed and the patients' and their families' quality of life was assessed. RESULTS The vast majority of patients (>85%) presented with metabolic decompensation in the neonatal period. Asymptomatic individuals were the exception. About three quarters of the study population was mentally retarded, median IQ was 55. Apart from neurologic symptoms, complications comprised hematologic abnormalities, cardiac diseases, feeding problems and impaired growth. Most patients considered their quality of life high. However, according to the parents' point of view psychic problems were four times more common in propionic acidemia patients than in healthy controls. CONCLUSION Our data show that the outcome of propionic acidemia is still unfavourable, in spite of improved clinical management. Many patients develop long-term complications affecting different organ systems. Impairment of neurocognitive development is of special concern. Nevertheless, self-assessment of quality of life of the patients and their parents yielded rather positive results.

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Document Type:Article
Author:Sarah C. Grünert, Stephanie Müllerleile, Linda de Silva, Michael Barth, Melanie Walter, Kerstin Walter, Thomas Meissner, Martin Lindner, Regina Ensenauer, René Santer, Olaf A. Bodamer, Matthias R. Baumgartner, Michaela Brunner-Krainz, Daniela Karall, Claudia Haase, Ina Knerr, Thorsten Marquardt, Julia B. Hennermann, Robert Steinfeld, Skadi Beblo, Hans-Georg Koch, Vassiliki Konstantopoulou, Sabine Scholl-Bürgi, Agnes van Teeffelen-Heithoff, Terttu Suormala, Wolfgang Sperl, Jan P. Kraus, Andrea Superti-Furga, Karl Otfried Schwab, Jörn Oliver Sass
Parent Title (English):Orphanet Journal of Rare Diseases
First Page:6
Publisher:BioMed Central
Date of first publication:2013/01/10
© 2013 Grünert et al. This is an Open Access article distributed under the terms of the Creative Commons Attribution License.
Departments, institutes and facilities:Institut für funktionale Gen-Analytik (IFGA)
Dewey Decimal Classification (DDC):6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Entry in this database:2018/08/18
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 3.0