De Novo PTEN Mutation in a Young Boy with Cutaneous Vasculitis

Case Reports in Pediatrics
Angela MauroPaul Brogan

Abstract

Phosphatase and tensin homolog (PTEN) is the protein encoded by the PTEN gene (10q23.3). PTEN mutations are related to a variety of rare diseases referred to collectively as PTEN hamartoma tumor syndromes (PHTS), which include Cowden Syndrome, Bannayan-Riley-Ruvalcaba syndrome, Proteus Syndrome, and Proteus-like syndrome. These diseases are associated with an increased risk of malignancy and for this reason an accurate and early diagnosis is essential in order to institute cancer surveillance. PTEN is a regulator of growth and homeostasis in immune system cells, although there are limited data describing immune dysregulation caused by PTEN mutations. We describe a case of PHTS syndrome caused by a de novo mutation in PTEN detected using a targeted next generation sequencing (NGS) gene panel which was instigated for workup of cutaneous vasculitis. We highlight the diagnostic utility of this approach and that mutations in PTEN may be associated with immune-dysregulatory features such as vasculitis in young children.

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Citations

Oct 15, 2019·American Journal of Medical Genetics. Part C, Seminars in Medical Genetics·William L MackenKatherine L Lachlan
Nov 30, 2019·Frontiers in Immunology·Ying HongPaul Brogan
Apr 27, 2018·Frontiers in Immunology·Sira NanthapisalPaul A Brogan
Apr 1, 2021·Italian Journal of Pediatrics·Angela MauroGiovanni Di Nardo
Aug 8, 2021·Journal of Clinical Medicine·Anna WajdaAgnieszka Paradowska-Gorycka

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Methods Mentioned

BETA
biopsy

Software Mentioned

Agilent Sure Call
PolyPhen2
MutationTaster
Agilent EArray
SIFT

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