Alec Reginald Errol Correa1, Puneeta Mishra1, Madhulika Kabra1, Neerja Gupta2. 1. Department of Pediatrics, Division of Genetics, All India Institute of Medical Sciences, New Delhi, India. 2. Department of Pediatrics, Division of Genetics, All India Institute of Medical Sciences, New Delhi, India. neerja17aiims@gmail.com.
Abstract
OBJECTIVES: To report a phenotypic series of eight patients of Beckwith-Wiedemann Syndrome (BWS) with abnormalities of 11p15.5 region to highlight the spectrum of phenotypic manifestations. METHODS: All the cases were evaluated using Methylation Specific Multiplex Ligation Dependent Probe Amplification (MS-MLPA) of 11p15.5 region to detect the abnormal methylation status of ICR1 (H19DR) and ICR2 (KvDMR) regions. RESULTS: The median age at diagnosis was 5.7 mo (range 1.5-13 mo) with female preponderance. Macroglossia, ear creases and abdominal wall defects were the major features. Hypomethylation at ICR2 and hypermethylation at ICR1 was observed in 6/8 and 2/8 patients respectively. No specific genotype and phenotype correlation was observed. CONCLUSIONS: This report highlights the major clinical features of BWS that should prompt pediatricians to offer genetic testing to evaluate the epigenetic abnormalities using MS-MLPA, as it not only helps in appropriate counseling but also provides further guidance about the tumor risk surveillance.
OBJECTIVES: To report a phenotypic series of eight patients of Beckwith-Wiedemann Syndrome (BWS) with abnormalities of 11p15.5 region to highlight the spectrum of phenotypic manifestations. METHODS: All the cases were evaluated using Methylation Specific Multiplex Ligation Dependent Probe Amplification (MS-MLPA) of 11p15.5 region to detect the abnormal methylation status of ICR1 (H19DR) and ICR2 (KvDMR) regions. RESULTS: The median age at diagnosis was 5.7 mo (range 1.5-13 mo) with female preponderance. Macroglossia, ear creases and abdominal wall defects were the major features. Hypomethylation at ICR2 and hypermethylation at ICR1 was observed in 6/8 and 2/8 patients respectively. No specific genotype and phenotype correlation was observed. CONCLUSIONS: This report highlights the major clinical features of BWS that should prompt pediatricians to offer genetic testing to evaluate the epigenetic abnormalities using MS-MLPA, as it not only helps in appropriate counseling but also provides further guidance about the tumor risk surveillance.
Authors: Kelly A Duffy; Brian J Sajorda; Alice C Yu; Evan R Hathaway; Katheryn L Grand; Matthew A Deardorff; Jennifer M Kalish Journal: Am J Med Genet A Date: 2019-02-04 Impact factor: 2.802
Authors: Saskia M Maas; Fleur Vansenne; Daniel J M Kadouch; Abdulla Ibrahim; Jet Bliek; Saskia Hopman; Marcel M Mannens; Johannes H M Merks; Eamonn R Maher; Raoul C Hennekam Journal: Am J Med Genet A Date: 2016-07-15 Impact factor: 2.802
Authors: Frédéric Brioude; Jennifer M Kalish; Alessandro Mussa; Alison C Foster; Jet Bliek; Giovanni Battista Ferrero; Susanne E Boonen; Trevor Cole; Robert Baker; Monica Bertoletti; Guido Cocchi; Carole Coze; Maurizio De Pellegrin; Khalid Hussain; Abdulla Ibrahim; Mark D Kilby; Malgorzata Krajewska-Walasek; Christian P Kratz; Edmund J Ladusans; Pablo Lapunzina; Yves Le Bouc; Saskia M Maas; Fiona Macdonald; Katrin Õunap; Licia Peruzzi; Sylvie Rossignol; Silvia Russo; Caroleen Shipster; Agata Skórka; Katrina Tatton-Brown; Jair Tenorio; Chiara Tortora; Karen Grønskov; Irène Netchine; Raoul C Hennekam; Dirk Prawitt; Zeynep Tümer; Thomas Eggermann; Deborah J G Mackay; Andrea Riccio; Eamonn R Maher Journal: Nat Rev Endocrinol Date: 2018-01-29 Impact factor: 43.330
Authors: Abdulla Ibrahim; Gail Kirby; Carol Hardy; Renuka P Dias; Louise Tee; Derek Lim; Jonathan Berg; Fiona MacDonald; Peter Nightingale; Eamonn R Maher Journal: Clin Epigenetics Date: 2014-06-04 Impact factor: 6.551