Bannayan-Riley-Ruvalcaba syndrome

Bannayan-Riley-Ruvalcaba syndrome (BRRS) is a rare congenital disorder characterized by hamartomatous intestinal polyposis, lipomas, macrocephaly and genital lentiginosis.

Autism

Autism is a neurodevelopmental disorder characterized by impaired social interaction and communication, and by restricted and repetitive behavior. Autism begins in childhood. It is marked by the presence of markedly abnormal or impaired development in social interaction and communication and a markedly restricted repertoire of activity and interest. Manifestations of the disorder vary greatly depending on the developmental level and chronological age of the individual (DSM-IV).


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PMID (PMCID)
27543776
 MALE Adult
Lhermitte-Duclos disease with neurofibrillary tangles in heterotopic cerebral grey matter.
Rusiecki D, Lach B.
Folia Neuropathol. 2016;54(2):190-6.
Many cases are associated with a mutation in the phosphatase and tensin homolog or PTEN gene which is also involved in numerous otherwise unrelated central nervous system abnormalities, namely Cowden syndrome [1,6,11], autism spectrum disorder [18], cerebral cortical dysplasia [11,30] and Bannayan-Riley-Ruvalcaba syndrome [30].
23382303
 MALE Infant
Brothers with germline PTEN mutations and persistent hypoglycemia, macrocephaly, developmental delay, short stature, and coagulopathy.
Granados A, Eng C, Diaz A.
J Pediatr Endocrinol Metab. 2013;26(1-2):137-41.
Mutations in PTEN have been identified in different clinical disorders such as Bannayan-Riley-Ruvalcaba syndrome, Cowden syndrome, Proteus syndrome, Proteus-like syndrome, and autism spectrum disorders with macrocephaly (Hobert).
15805158
 MIXED_SAMPLE Child
Subset of individuals with autism spectrum disorders and extreme macrocephaly associated with germline PTEN tumour suppressor gene mutations.
Butler MG, Dasouki MJ, Zhou XP, Talebizadeh Z, Brown M, Takahashi TN, Miles JH, Wang CH, Stratton R, Pilarski R, Eng C.
J Med Genet. 2005;42(4):318-21.
Occasionally, individuals with Cowden syndrome (a cancer syndrome) and other related hamartoma disorders such as Bannayan-Riley-Ruvalcaba syndrome, Proteus syndrome, and Proteus-like conditions, are characterised by germline PTEN mutations, and may have neurobehavioural features resembling autism as well as overgrowth and macrocephaly.