BACKGROUND: Moyamoya disease (MMD) is a chronic, occlusive cerebrovascular disease characterized by bilateral steno-occlusive changes at the terminal portion of the internal carotid arteries and an abnormal vascular network at the base of the brain determining stroke in children. Patients with a similar vasculopathy and associated conditions are affected by the moyamoya syndrome (MMS). Most of the studies focused on MMD were carried out on East-Asian population. Ring Finger 213 (RNF213) has been identified as the strongest susceptibility gene for MMD in East-Asian people. Overall, 74.5% of the East-Asian patients carry the founder variant p.Arg4810Lys of RNF213 never reported in Caucasians. A different genetic landscape among the diverse ethnic populations seems to exist. METHODS: We sequenced the coding sequence region of RNF213, TGFB1 and PDGFRB in 21 ethnically homogeneous Italian children with moyamoya; comprehensive sequencing data are available from parents of eight of them. The analyses were carried out by NGS on Thermo-fisher PGM platform. We also performed a comprehensive review of the literature about the variations of these three genes in Caucasian patients. RESULTS: Several new variants of RNF213 gene were detected, in particular, two new pathogenic mutations on RNF213 (p.Trp4677Leu and p.Cys4017Ser) were identified in one MMS case and in one MMD case, respectively. Moreover, in a MMS case a new probably causing disease mutation p.Pro1063Thr of PDGFRB was detected. CONCLUSIONS: The genetic susceptibility of Asian moyamoya vasculopathy seems to differ from the Caucasian disease. No additional differences seem to exist between MMD and MMS.
BACKGROUND:Moyamoya disease (MMD) is a chronic, occlusive cerebrovascular disease characterized by bilateral steno-occlusive changes at the terminal portion of the internal carotid arteries and an abnormal vascular network at the base of the brain determining stroke in children. Patients with a similar vasculopathy and associated conditions are affected by the moyamoya syndrome (MMS). Most of the studies focused on MMD were carried out on East-Asian population. Ring Finger 213 (RNF213) has been identified as the strongest susceptibility gene for MMD in East-Asian people. Overall, 74.5% of the East-Asian patients carry the founder variant p.Arg4810Lys of RNF213 never reported in Caucasians. A different genetic landscape among the diverse ethnic populations seems to exist. METHODS: We sequenced the coding sequence region of RNF213, TGFB1 and PDGFRB in 21 ethnically homogeneous Italian children with moyamoya; comprehensive sequencing data are available from parents of eight of them. The analyses were carried out by NGS on Thermo-fisher PGM platform. We also performed a comprehensive review of the literature about the variations of these three genes in Caucasian patients. RESULTS: Several new variants of RNF213 gene were detected, in particular, two new pathogenic mutations on RNF213 (p.Trp4677Leu and p.Cys4017Ser) were identified in one MMS case and in one MMD case, respectively. Moreover, in a MMS case a new probably causing disease mutation p.Pro1063Thr of PDGFRB was detected. CONCLUSIONS: The genetic susceptibility of Asian moyamoya vasculopathy seems to differ from the Caucasian disease. No additional differences seem to exist between MMD and MMS.
Authors: Amélie Pinard; Maximillian D J Fiander; Alana C Cecchi; Andrea L Rideout; Mohamed Azouz; Stuart M Fraser; P Daniel McNeely; Simon Walling; Sarah C Novara; Anna C E Hurst; Dongchuan Guo; Sandhya Parkash; Michael J Bamshad; Deborah A Nickerson; Anthony M Vandersteen; Dianna M Milewicz Journal: Neurology Date: 2021-02-10 Impact factor: 9.910
Authors: Francesca Tinelli; Sara Nava; Francesco Arioli; Gloria Bedini; Emma Scelzo; Daniela Lisini; Giuseppe Faragò; Andrea Gioppo; Elisa F Ciceri; Francesco Acerbi; Paolo Ferroli; Ignazio G Vetrano; Silvia Esposito; Veronica Saletti; Chiara Pantaleoni; Federica Zibordi; Nardo Nardocci; Maria Luisa Zedde; Alessandro Pezzini; Vincenzo Di Lazzaro; Fioravante Capone; Maria Luisa Dell'Acqua; Peter Vajkoczy; Elisabeth Tournier-Lasserve; Eugenio A Parati; Anna Bersano; Laura Gatti Journal: Int J Mol Sci Date: 2020-08-11 Impact factor: 5.923
Authors: R Mertens; M Graupera; H Gerhardt; A Bersano; E Tournier-Lasserve; M A Mensah; S Mundlos; P Vajkoczy Journal: Transl Stroke Res Date: 2021-09-16 Impact factor: 6.829