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Clinical and genetic analyses of patients with lateralized overgrowth.
- Source :
-
BMC Medical Genomics . 9/30/2022, Vol. 15 Issue 1, p1-11. 11p. - Publication Year :
- 2022
-
Abstract
- Background: The genetic features and treatment strategies of lateralized overgrowth have been elusive. We performed this study to analyze the genetic characteristics and treatment results of propranolol- or alpelisib-treated patients with lateralized overgrowth. Methods: Fifteen patients with lateralized overgrowth were involved. Clinical characteristics and whole-body magnetic resonance imaging (WB-MRI) findings were evaluated. Targeted exome sequencing with a gene panel of affected tissue and peripheral white blood cells was performed. Propranolol was administered and treatment results were evaluated. The PIK3CA inhibitor alpelisib was prescribed via a managed access program. Results: The identified mutations were PIK3CA (n = 7), KRAS (n = 2), PTEN (n = 1), MAP2K3 (n = 1), GNAQ (n = 1), TBC1D4 (n = 1), and TEK (n = 1). Propranolol was prescribed in 12 patients, and 7 experienced mild improvement of symptoms. Alpelisib was prescribed in two patients with a PIK3CA mutation, and the reduction of proliferated masses after 1 year of treatment was proved by WB-MRI. Conclusions: Targeted exome sequencing identified various genetic features of lateralized overgrowth. Propranolol could be applied as an adjuvant therapy for reducing vascular symptoms, but a PIK3CA inhibitor would be the primary therapeutic strategy for PIK3CA-related overgrowth syndrome. [ABSTRACT FROM AUTHOR]
- Subjects :
- *LEUCOCYTES
*MAGNETIC resonance imaging
Subjects
Details
- Language :
- English
- ISSN :
- 17558794
- Volume :
- 15
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- BMC Medical Genomics
- Publication Type :
- Academic Journal
- Accession number :
- 159412730
- Full Text :
- https://doi.org/10.1186/s12920-022-01362-1