Smith-Magenis syndrome (SMS) is a complex genetic disorder characterized by distinctive physical features, developmental delay, cognitive impairment, and a typical behavioral phenotype. SMS is caused by interstitial 17p11.2 deletions (90%), encompassing multiple genes and including the retinoic acid-induced 1 gene (RAI1), or by pathogenic variants in RAI1 itself (10%). RAI1 is a dosage-sensitive gene expressed in many tissues and acting as transcriptional regulator. The majority of individuals exhibit a mild-to-moderate range of intellectual disability. The behavioral phenotype includes significant sleep disturbance, stereotypes, maladaptive and self-injurious behaviors. In this review, we summarize current clinical knowledge and therapeutic approaches. We further discuss the common biological background shared with other conditions commonly retained in differential diagnosis.

Smith-Magenis syndrome-Clinical review, biological background and related disorders / B. Rinaldi, R. Villa, A. Sironi, L. Garavelli, P. Finelli, M. Francesca Bedeschi. - In: GENES. - ISSN 2073-4425. - 13:2(2022 Feb 11), pp. 335.1-335.17. [10.3390/genes13020335]

Smith-Magenis syndrome-Clinical review, biological background and related disorders

A. Sironi;P. Finelli
Penultimo
;
2022

Abstract

Smith-Magenis syndrome (SMS) is a complex genetic disorder characterized by distinctive physical features, developmental delay, cognitive impairment, and a typical behavioral phenotype. SMS is caused by interstitial 17p11.2 deletions (90%), encompassing multiple genes and including the retinoic acid-induced 1 gene (RAI1), or by pathogenic variants in RAI1 itself (10%). RAI1 is a dosage-sensitive gene expressed in many tissues and acting as transcriptional regulator. The majority of individuals exhibit a mild-to-moderate range of intellectual disability. The behavioral phenotype includes significant sleep disturbance, stereotypes, maladaptive and self-injurious behaviors. In this review, we summarize current clinical knowledge and therapeutic approaches. We further discuss the common biological background shared with other conditions commonly retained in differential diagnosis.
Smith-Magenis; SMS; RAI1; 17p11.2 deletion syndrome; sleep disorders
Settore MED/03 - Genetica Medica
11-feb-2022
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/925921
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