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Kassai B, Bouyé P, Gilbert-Dussardier B, Godart F, Thambo JB, Rossi M, Cochat P, Chirossel P, Luong S, Serusclat A, Canterino I, Mercier C, Rabilloud M, Pivot C, Pirot F, Ginhoux T, Coopman S, Grenet G, Gueyffier F, Di-Fillippo S, Bertholet-Thomas A. Minoxidil versus placebo in the treatment of arterial wall hypertrophy in children with Williams Beuren Syndrome: a randomized controlled trial. BMC Pediatr 2019; 19:170. [PMID: 31138170 PMCID: PMC6537216 DOI: 10.1186/s12887-019-1544-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 05/20/2019] [Indexed: 01/03/2023] Open
Abstract
Background Insufficient elastin synthesis leads to vascular complications and arterial hypertension in children with Williams-Beuren syndrome. Restoring sufficient quantity of elastin should then result in prevention or inhibition of vascular malformations and improvement in arterial blood pressure. Methods The aim of this study was to assess the efficacy and safety of minoxidil on Intima Media Thickness (IMT) on the right common carotid artery after twelve-month treatment in patient with Williams-Beuren syndrome. We performed a randomized placebo controlled double blind trial. All participants were treated for 12 months and followed for 18 months. The principal outcome was assessed by an independent adjudication committee blinded to the allocated treatment groups. Results The principal outcome was available for 9 patients in the placebo group and 8 patients in the minoxidil group. After 12-month treatment, the IMT in the minoxidil group increased by 0.03 mm (95% CI -0.002, 0.06) compared with 0.01 mm (95%CI - 0.02, 0.04 mm) in the placebo group (p = 0.4). Two serious adverse events unrelated to the treatment occurred, one in the minoxidil and 1 in the placebo group. After 18 months, the IMT increased by 0.07 mm (95% CI 0.04, 0.10 mm) in the minoxidil compared with 0.01 mm (95% CI -0.02, 0.04 mm) in the placebo group (p = 0.008). Conclusion Our results suggest a slight increase after 12 and 18-month follow-up in IMT. More understanding of the biological changes induced by minoxidil should better explain its potential role on elastogenesis in Williams-Beuren syndrome. Trials registration US National Institutes of Health Clinical Trial Register (NCT00876200). Registered 3 April 2009 (retrospectively registered). Electronic supplementary material The online version of this article (10.1186/s12887-019-1544-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Behrouz Kassai
- Hospices Civils de Lyon, EPICIME-CIC 1407 de Lyon, Inserm, Service de Pharmacotoxicologie, CHU-Lyon, F-69677, Bron, France.
| | - Philippe Bouyé
- CHU d'Angers, department of Vascular Studies, Centre de Recherche Clinique Angers, Angers, France
| | | | - François Godart
- CHRU de Lille, université Lille 2, EA 2693, service de cardiologie infantile et congénitale, Nord de France, hôpital cardiologique, F-59000, Lille, France
| | - Jean-Benoit Thambo
- CHU de Bordeaux, université de Bordeaux, service des cardiopathies congénitales, hôpital cardiologique du Haut-Lévêque, Inserm U-1045, LIRYC, institut de rythmologie et modélisation cardiaque, Bordeaux, France
| | - Massimiliano Rossi
- Hospices Civils de Lyon, Service de génétique médicale, INSERM U1028, CNRS UMR5292, Centre de Recherche en Neurosciences de Lyon, GENDEV Team, F-69500, Bron, France
| | - Pierre Cochat
- Hospices Civils de Lyon, Service de Néphrologie Pédiatrique, et centre de référence maladies rénales rares- Néphrogones, Filière ORKiD, -69500, Bron, France
| | - Pierre Chirossel
- Hospices Civils de Lyon, Service d'exploration fonctionnelle vasculaire, hôpital Louis Pradel, F-69500, Bron, France
| | - Stephane Luong
- Hospices Civils de Lyon, Service d'exploration fonctionnelle vasculaire, hôpital Louis Pradel, F-69500, Bron, France
| | - André Serusclat
- Hospices Civils de Lyon, Service d'exploration fonctionnelle vasculaire, hôpital Louis Pradel, F-69500, Bron, France
| | | | - Catherine Mercier
- Université de Lyon, F-69000, Lyon, France ; Université Lyon 1, CNRS, UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, F-69622, Villeurbanne, France.,Hospices Civils de Lyon, Service de Biostatistique, F-69324, Lyon, France
| | - Muriel Rabilloud
- Université de Lyon, F-69000, Lyon, France ; Université Lyon 1, CNRS, UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, F-69622, Villeurbanne, France.,Hospices Civils de Lyon, Service de Biostatistique, F-69324, Lyon, France
| | - Christine Pivot
- Hospices Civils de Lyon, Pharmacie à Usage Intérieur, plateforme Fripharm, F-69437, Lyon, France
| | - Fabrice Pirot
- Université de Lyon, F-69000, Lyon, France ; Université Lyon 1, CNRS, UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, F-69622, Villeurbanne, France.,Hospices Civils de Lyon, Pharmacie à Usage Intérieur, plateforme Fripharm, F-69437, Lyon, France
| | - Tiphanie Ginhoux
- Hospices Civils de Lyon, EPICIME-CIC 1407 de Lyon, Inserm, Service de Pharmacotoxicologie, CHU-Lyon, F-69677, Bron, France
| | - Stéphanie Coopman
- Lille University Hospital, Centre d'Investigation Clinique, CIC-1403-Inserm-CH&U, F-59000, Lille, France
| | - Guillaume Grenet
- Université de Lyon, F-69000, Lyon, France ; Université Lyon 1, CNRS, UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, F-69622, Villeurbanne, France
| | - François Gueyffier
- Université de Lyon, F-69000, Lyon, France ; Université Lyon 1, CNRS, UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, F-69622, Villeurbanne, France
| | - Sylvie Di-Fillippo
- Hospices Civils de Lyon, Service de cardiologie pédiatrique, F-69500, Bron, France
| | - Aurélia Bertholet-Thomas
- Hospices Civils de Lyon, Service de Néphrologie Pédiatrique, et centre de référence maladies rénales rares- Néphrogones, Filière ORKiD, -69500, Bron, France
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Aref-Eshghi E, Bend EG, Colaiacovo S, Caudle M, Chakrabarti R, Napier M, Brick L, Brady L, Carere DA, Levy MA, Kerkhof J, Stuart A, Saleh M, Beaudet AL, Li C, Kozenko M, Karp N, Prasad C, Siu VM, Tarnopolsky MA, Ainsworth PJ, Lin H, Rodenhiser DI, Krantz ID, Deardorff MA, Schwartz CE, Sadikovic B. Diagnostic Utility of Genome-wide DNA Methylation Testing in Genetically Unsolved Individuals with Suspected Hereditary Conditions. Am J Hum Genet 2019; 104:685-700. [PMID: 30929737 DOI: 10.1016/j.ajhg.2019.03.008] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 03/05/2019] [Indexed: 12/13/2022] Open
Abstract
Conventional genetic testing of individuals with neurodevelopmental presentations and congenital anomalies (ND/CAs), i.e., the analysis of sequence and copy number variants, leaves a substantial proportion of them unexplained. Some of these cases have been shown to result from DNA methylation defects at a single locus (epi-variants), while others can exhibit syndrome-specific DNA methylation changes across multiple loci (epi-signatures). Here, we investigate the clinical diagnostic utility of genome-wide DNA methylation analysis of peripheral blood in unresolved ND/CAs. We generate a computational model enabling concurrent detection of 14 syndromes using DNA methylation data with full accuracy. We demonstrate the ability of this model in resolving 67 individuals with uncertain clinical diagnoses, some of whom had variants of unknown clinical significance (VUS) in the related genes. We show that the provisional diagnoses can be ruled out in many of the case subjects, some of whom are shown by our model to have other diseases initially not considered. By applying this model to a cohort of 965 ND/CA-affected subjects without a previous diagnostic assumption and a separate assessment of rare epi-variants in this cohort, we identify 15 case subjects with syndromic Mendelian disorders, 12 case subjects with imprinting and trinucleotide repeat expansion disorders, as well as 106 case subjects with rare epi-variants, a portion of which involved genes clinically or functionally linked to the subjects' phenotypes. This study demonstrates that genomic DNA methylation analysis can facilitate the molecular diagnosis of unresolved clinical cases and highlights the potential value of epigenomic testing in the routine clinical assessment of ND/CAs.
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Pober BR, Johnson M, Urban Z. Mechanisms and treatment of cardiovascular disease in Williams-Beuren syndrome. J Clin Invest 2008; 118:1606-15. [PMID: 18452001 DOI: 10.1172/jci35309] [Citation(s) in RCA: 129] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Williams-Beuren syndrome (WBS) is a microdeletion disorder caused by heterozygous loss of approximately 1.5-Mb pairs of DNA from chromosome 7. Patients with WBS have a characteristic constellation of medical and cognitive findings, with a hallmark feature of generalized arteriopathy presenting as stenoses of elastic arteries and hypertension. Human and mouse studies establish that defects in the elastin gene, leading to elastin haploinsufficiency, underlie the arteriopathy. In this review we describe potential links between elastin expression and arteriopathy, possible explanations for disease variability, and current treatment options and their limitations, and we propose several new directions for the development of nonsurgical preventative therapies based on insights from elastin biology.
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Affiliation(s)
- Barbara R Pober
- Department of Pediatrics, MassGeneral Hospital for Children, Simches Research Building, Rm. 222, 185 Cambridge St., Boston, Massachusetts 02114, USA.
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