OBJECTIVES: To determine whether offering cardiac screening to relatives of patients with left ventricular outflow tract obstructions (LVOTOs) would be justified. BACKGROUND: LVOTOs have been recognised as a group of congenital heart diseases with 'high heritability'. One of the LVOTOs, the bicuspid aortic valve, is often asymptomatic, but has become known to be associated with sudden, unexpected cardiac death. However, the need for cardiac screening of first-degree relatives of patients with LVOTO has not been determined owing to the lack of studies in well-defined cohorts of consecutive patients. METHODS: The families of a cohort of 249 consecutive paediatric patients with LVOTO were offered genetic counselling. Of 182 consenting index patients, 40 patients (22%) appeared to have associated non-cardiac congenital anomalies (LVOTO-NCA). In the other 142 patients with LVOTO, cardiac screening of 449 first-degree relatives was performed. RESULTS: Cardiac screening disclosed a cardiac anomaly in 34 first-degree relatives (8%). In 23 (68%) of these the cardiac anomaly was a bicuspid aortic valve. Twenty-four of these anomalies were newly detected by our screening programme (71%). These 34 cardiac anomalies were found in the families of 28 index cases (20%). CONCLUSIONS: This study shows that of the patients with LVOTO without NCA, 20% had (an) affected first-degree relative(s), frequently with undetected bicuspid aortic valves. These data suggest that cardiac screening of relatives of patients with LVOTO without NCA is justified. This may help prevent sudden, unexpected, cardiac death or life-threatening complications in relatives with undetected bicuspid aortic valves.
OBJECTIVES: To determine whether offering cardiac screening to relatives of patients with left ventricular outflow tract obstructions (LVOTOs) would be justified. BACKGROUND: LVOTOs have been recognised as a group of congenital heart diseases with 'high heritability'. One of the LVOTOs, the bicuspid aortic valve, is often asymptomatic, but has become known to be associated with sudden, unexpected cardiac death. However, the need for cardiac screening of first-degree relatives of patients with LVOTO has not been determined owing to the lack of studies in well-defined cohorts of consecutive patients. METHODS: The families of a cohort of 249 consecutive paediatric patients with LVOTO were offered genetic counselling. Of 182 consenting index patients, 40 patients (22%) appeared to have associated non-cardiac congenital anomalies (LVOTO-NCA). In the other 142 patients with LVOTO, cardiac screening of 449 first-degree relatives was performed. RESULTS: Cardiac screening disclosed a cardiac anomaly in 34 first-degree relatives (8%). In 23 (68%) of these the cardiac anomaly was a bicuspid aortic valve. Twenty-four of these anomalies were newly detected by our screening programme (71%). These 34 cardiac anomalies were found in the families of 28 index cases (20%). CONCLUSIONS: This study shows that of the patients with LVOTO without NCA, 20% had (an) affected first-degree relative(s), frequently with undetected bicuspid aortic valves. These data suggest that cardiac screening of relatives of patients with LVOTO without NCA is justified. This may help prevent sudden, unexpected, cardiac death or life-threatening complications in relatives with undetected bicuspid aortic valves.
Authors: Ana Morales; Dawn C Allain; Patricia Arscott; Emily James; Gretchen MacCarrick; Brittney Murray; Crystal Tichnell; Amy R Shikany; Sara Spencer; Sara M Fitzgerald-Butt; Jessica D Kushner; Christi Munn; Emily Smith; Katherine G Spoonamore; Harikrishna S Tandri; W Aaron Kay Journal: J Genet Couns Date: 2017-03-10 Impact factor: 2.537
Authors: Benjamin M Helm; Samantha L Freeze; Katherine G Spoonamore; Stephanie M Ware; Mark D Ayers; Adam C Kean Journal: J Genet Couns Date: 2017-10-27 Impact factor: 2.537
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Authors: Neil A Hanchard; Shanker Swaminathan; Kristine Bucasas; Dieter Furthner; Susan Fernbach; Mahshid S Azamian; Xueqing Wang; Mark Lewin; Jeffrey A Towbin; Lisa C A D'Alessandro; Shaine A Morris; William Dreyer; Susan Denfield; Nancy A Ayres; Wayne J Franklin; Henri Justino; M Regina Lantin-Hermoso; Elena C Ocampo; Alexia B Santos; Dhaval Parekh; Douglas Moodie; Aamir Jeewa; Emily Lawrence; Hugh D Allen; Daniel J Penny; Charles D Fraser; James R Lupski; Mojisola Popoola; Lalita Wadhwa; J David Brook; Frances A Bu'Lock; Shoumo Bhattacharya; Seema R Lalani; Gloria A Zender; Sara M Fitzgerald-Butt; Jessica Bowman; Don Corsmeier; Peter White; Kelsey Lecerf; Gladys Zapata; Patricia Hernandez; Judith A Goodship; Vidu Garg; Bernard D Keavney; Suzanne M Leal; Heather J Cordell; John W Belmont; Kim L McBride Journal: Hum Mol Genet Date: 2016-03-09 Impact factor: 6.150
Authors: Wilhelmina S Kerstjens-Frederikse; Ingrid M B H van de Laar; Yvonne J Vos; Judith M A Verhagen; Rolf M F Berger; Klaske D Lichtenbelt; Jolien S Klein Wassink-Ruiter; Paul A van der Zwaag; Gideon J du Marchie Sarvaas; Klasien A Bergman; Catia M Bilardo; Jolien W Roos-Hesselink; Johan H P Janssen; Ingrid M Frohn-Mulder; Karin Y van Spaendonck-Zwarts; Joost P van Melle; Robert M W Hofstra; M W Wessels Journal: Genet Med Date: 2016-01-28 Impact factor: 8.822