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  • Title: Brain Abnormalities in PIK3CA-Related Overgrowth Spectrum: Physician, Patient, and Caregiver Experiences.
    Author: Dexheimer J, Mirzaa GM.
    Journal: Adv Ther; 2022 Sep; 39(9):3871-3880. PubMed ID: 35857185.
    Abstract:
    PIK3CA-related overgrowth spectrum (PROS) disorders are caused by somatic, gain-of-function mutations in PIK3CA (phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) that result in hyperactivation of the phosphatidylinositol-3-kinase (PI3K) signaling pathway. PROS encompasses a broad spectrum of overlapping phenotypes that vary considerably in their severity and tissue distribution, leading to different and complex experiences for affected children and their families. The parent of a child with the PROS disorder megalencephaly-capillary malformation (MCAP) coauthored this article. MCAP is characterized by significant neurological involvement, and she describes personal experiences with this condition, including delays associated with obtaining a correct diagnosis, finding an experienced care team, challenges with schooling, medical complications, and the ongoing emotional and financial impacts on their lives. A physician perspective, which reinforces the challenges faced by the young child and his family, is provided by a clinician and researcher specializing in PROS disorders with central nervous system involvement. The physician reviews the mechanism of disease, some of the challenges in accurately diagnosing PROS conditions, disease-related complications, current treatment options and their limitations, and emerging therapeutic options including ongoing clinical trials. Our objective is to share these experiences and insights to benefit patients with PROS disorders, their families, and health care professionals involved with caring for patients with PROS.
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