Digestive involvement in a severe form of Snyder-Robinson syndrome: Possible expansion of the phenotype.

Abstract:

:Snyder-Robinson syndrome (OMIM #309583) is a rare X-linked condition, caused by mutation in the SMS gene (MIM *300105), characterized by a wide spectrum of clinical signs including developmental delay, epilepsy, asthenic habitus, dysmorphism, osteopenia, and renal or genital anomalies. Here we describe two maternal half-brothers who both presented with severe neurodevelopmental delay, seizures, hearing loss, facial dysmorphism, renal and ophthalmologic anomalies, failure to thrive and premature death. A novel p.(Gly203Asp) variant was found at the hemizygous state in the two boys, and an elevated Spermidine/Spermine ratio confirmed the diagnosis of Snyder-Robinson syndrome. One of the brothers presented with gastrointestinal symptoms, with jejunal stenosis, enteral feeding intolerance, failure to thrive due to a dysfunctional gastrointestinal system, cholestasis and exocrine pancreatic insufficiency. Although more studies will be needed to understand its mechanisms, this observation lends further support to the possibility of severe digestive involvement in Snyder Robinson syndrome.

journal_name

Eur J Med Genet

authors

Dontaine P,Kottos E,Dassonville M,Balasel O,Catros V,Soblet J,Perlot P,Vilain C

doi

10.1016/j.ejmg.2020.104097

subject

Has Abstract

pub_date

2021-01-01 00:00:00

pages

104097

issue

1

eissn

1769-7212

issn

1878-0849

pii

S1769-7212(20)30807-7

journal_volume

64

pub_type

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