Journal
MOLECULAR CYTOGENETICS
Volume 7, Issue -, Pages -Publisher
BIOMED CENTRAL LTD
DOI: 10.1186/s13039-014-0054-y
Keywords
IMMP2L; Neurodevelopmental disorders; Copy number variation; Array-CGH
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Funding
- Cinque per mille dell'IRPEF-Finanziamento della ricerca sanitaria
- Finanziamento Ricerca Corrente, Ministero Salute (contributo per la ricerca intramurale)
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Background: Since the introduction of the array-CGH technique in the diagnostic workup of mental retardation, new recurrent copy number variations and novel microdeletion/microduplication syndromes were identified. These findings suggest that some genomic disorders have high penetrance but a wide range of phenotypic severity. Results: We present the clinical and molecular description of four unrelated patients affected by neurodevelopmental disorders and overlapping 7q31.1 microdeletion/microduplication, identified by array-CGH and involving only part of the IMMP2L gene. Conclusion: IMMP2L encodes an inner mitochondrial membrane protease-like protein, which is required for processing of cytochromes inside mitochondria. Numerous studies reported that this gene is implicated in behavioural disorders such as autistic spectrum disorders, attention-deficit hyperactivity disorders, and Gilles de la Tourette syndrome. We discuss the functions of the gene suggesting that IMMP2L may act as risk factor for neurological disease.
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