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  • Title: PDE3A variant associated with hypertension and brachydactyly syndrome in a patient with ischemic stroke caused by spontaneous intracranial artery dissection: A review of the clinical and molecular genetic features.
    Author: Lee CG, Kang K, Yoon RG, Seo JY, Park JM.
    Journal: Eur J Med Genet; 2020 Apr; 63(4):103781. PubMed ID: 31589936.
    Abstract:
    Hypertension and brachydactyly syndrome (HTNB; MIM 112410) is a rare, recently described, autosomal dominant syndromic disease characterized by the triad of brachydactyly type E (BDE), short stature, and hypertension. HTNB is caused by a heterozygous mutation in the PDE3A (MIM 123805) gene on chromosome 12p12; this gene encodes a member of the cGMP-inhibited cyclic nucleotide phosphodiesterase family. PED3A plays a role in many signal transduction pathways, including those involved in vascular smooth muscle proliferation and contraction, cardiac contractility, platelet aggregation, and hormone secretion. Here, we present a new case of HTNB in a 42-year-old patient who experienced recurrent ischemic strokes in various vascular territories; these strokes were caused by intracranial multiarterial dissection, and were experienced for 2 weeks. She was found to harbor a de novo heterozygous in-frame deletion, c.1333_1335del p.(Thr445del), in exon 4 of the PDE3A gene. Our finding is expected to contribute to the elucidation of the pathophysiology of stroke in HTNB patients. We further review all clinical and molecular genetic features of this rare disease described in the literature to date.
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