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Juvenile Idiopathic Arthritis Associated with Combined JP-HHT Syndrome: A Novel Phenotype Associated with a Novel Variant in SMAD4.


ABSTRACT: Juvenile polyposis (JP) syndrome is characterized by multiple hamartomatous polyps of the gastrointestinal tract. Hereditary hemorrhagic telangiectasia (HHT) is a vascular dysplasia characterized by telangiectasia in the skin, mucous membranes, and arteriovenous malformations in other organs. Individuals with JP-HHT syndrome have variable features of both rare disorders, attributed to heterozygous mutations in the SMAD4 gene. Systemic juvenile idiopathic arthritis (JIA) is a severe, chronic disease marked by arthritis and systemic inflammation for which the cause remains unknown. JIA has never been described in association with SMAD4 -related disease. We describe a case of JP-HHT syndrome with a novel SMAD4 variant, c.1052A?>?T (p.D351V), in which the child also had JIA manifestation.

SUBMITTER: Bishop JC 

PROVIDER: S-EPMC5916806 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

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Juvenile Idiopathic Arthritis Associated with Combined JP-HHT Syndrome: A Novel Phenotype Associated with a Novel Variant in <i>SMAD4</i>.

Bishop Juliet Chhay JC   Britton Jacquelyn Francis JF   Murphy Anne M AM   Sule Sangeeta S   Mitchell Sally S   Takemoto Clifford C   Collaco Joseph M JM   Karnsakul Wikrom W   Cuffari Carmelo C   Dietz Edith E   Bodurtha Joann J  

Journal of pediatric genetics 20171229 2


Juvenile polyposis (JP) syndrome is characterized by multiple hamartomatous polyps of the gastrointestinal tract. Hereditary hemorrhagic telangiectasia (HHT) is a vascular dysplasia characterized by telangiectasia in the skin, mucous membranes, and arteriovenous malformations in other organs. Individuals with JP-HHT syndrome have variable features of both rare disorders, attributed to heterozygous mutations in the <i>SMAD4</i> gene. Systemic juvenile idiopathic arthritis (JIA) is a severe, chron  ...[more]

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