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Lazea C, Țaranu I, Bolboacă SD. Exploring Cardiovascular Involvement in Tuberous Sclerosis: Insights for Pediatric Clinicians. CHILDREN (BASEL, SWITZERLAND) 2024; 11:674. [PMID: 38929253 PMCID: PMC11201926 DOI: 10.3390/children11060674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 05/22/2024] [Accepted: 05/23/2024] [Indexed: 06/28/2024]
Abstract
Tuberous sclerosis is a rare genetic disorder involving mainly the nervous and cardiovascular systems. The early recognition of the cardiovascular manifestations by the pediatrician allows an appropriate management and therefore enhances the quality of life of the affected children. Cardiac rhabdomyomas and the associated arrhythmias are the first cardiac features and they might represent a diagnosis challenge given their wide spectrum of clinical manifestations. We aimed to provide the paediatric practitioners with current knowledge regarding the cardiovascular complications in children with tuberous sclerosis. We overviewed the antenatal and postnatal evolution of cardiovascular manifestations, the systematic screening and long-term follow-up strategy of cardiac rhabdomyomas and arrhythmias in children with tuberous sclerosis.
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Affiliation(s)
- Cecilia Lazea
- Pediatric Clinic 1, Emergency Pediatric Hospital, Calea Moților, No. 68, 400370 Cluj-Napoca, Romania;
- Department Mother and Child, Iuliu Hațieganu University of Medicine and Pharmacy, Calea Moților, No. 68, 400370 Cluj-Napoca, Romania
| | - Ioana Țaranu
- Department of Medical Informatics and Biostatistics, Iuliu Hațieganu University of Medicine and Pharmacy, Louis Pasteur Str., No. 6, 400349 Cluj-Napoca, Romania;
| | - Sorana D. Bolboacă
- Department of Medical Informatics and Biostatistics, Iuliu Hațieganu University of Medicine and Pharmacy, Louis Pasteur Str., No. 6, 400349 Cluj-Napoca, Romania;
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Hofmann C, Syrbe S, Hebe J, Kreft J, Stark S, Milde T, Völkers M, Hoffmann GF, Gorenflo M, Kovacevic A. Long-term use of everolimus for refractory arrhythmia in a child with tuberous sclerosis complex. Am J Med Genet A 2024; 194:e63508. [PMID: 38130096 DOI: 10.1002/ajmg.a.63508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 12/01/2023] [Accepted: 12/07/2023] [Indexed: 12/23/2023]
Abstract
Tuberous sclerosis complex is associated with the occurrence of cardiac rhabdomyomas that may result in life-threatening arrhythmia unresponsive to standard antiarrhythmic therapy. We report the case of an infant with multiple cardiac rhabdomyomas who developed severe refractory supraventricular tachycardia (SVT) that was successfully treated with everolimus. Pharmacological mTOR inhibition rapidly improved arrhythmia within few weeks after treatment initiation and correlated with a reduction in tumor size. Intermediate attempts to discontinue everolimus resulted in rhabdomyoma size rebound and recurrence of arrhythmic episodes, which resolved on resumption of therapy. While everolimus treatment led to successful control of arrhythmia in the first years of life, episodes of SVT reoccurred at the age of 6 years. Electrophysiologic testing confirmed an accessory pathway that was successfully ablated, resulting in freedom of arrhythmic events. In summary we present an in-depth evaluation of the long-term use of everolimus in a child with TSC-associated SVT, including the correlation between drug use and arrhythmia outcome. This case report provides important information on the safety and efficacy of an mTOR inhibitor for the treatment of a potentially life-threatening cardiac disease manifestation in TSC for which the optimal treatment strategy is still not well established.
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Affiliation(s)
- Christoph Hofmann
- Department of Internal Medicine III (Cardiology, Angiology, and Pneumology), Heidelberg University Hospital, Heidelberg, Germany
- DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg/Mannheim, Heidelberg, Germany
| | - Steffen Syrbe
- Department of General Pediatrics, Division of Neuropediatrics and Metabolic Medicine, Heidelberg University Hospital, Heidelberg, Germany
| | - Joachim Hebe
- Center for Electrophysiology Bremen, Bremen, Germany
| | - Jannis Kreft
- Department of Internal Medicine III (Cardiology, Angiology, and Pneumology), Heidelberg University Hospital, Heidelberg, Germany
- DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg/Mannheim, Heidelberg, Germany
| | - Sebastian Stark
- Hopp Children's Cancer Center Heidelberg (KiTZ), Heidelberg, Germany
- National Center for Tumor Diseases (NCT), NCT Heidelberg, Partnership Between German Cancer Research Center (DKFZ) and Heidelberg University Hospital, Germany
- Department of Pediatric Oncology, Hematology and Immunology, Heidelberg University Hospital, Heidelberg, Germany
- Clinical Cooperation Unit Pediatric Oncology, German Cancer Research Center (DKFZ) and German Consortium for Translational Cancer Research (DKTK), Heidelberg, Germany
| | - Till Milde
- Hopp Children's Cancer Center Heidelberg (KiTZ), Heidelberg, Germany
- National Center for Tumor Diseases (NCT), NCT Heidelberg, Partnership Between German Cancer Research Center (DKFZ) and Heidelberg University Hospital, Germany
- Department of Pediatric Oncology, Hematology and Immunology, Heidelberg University Hospital, Heidelberg, Germany
- Clinical Cooperation Unit Pediatric Oncology, German Cancer Research Center (DKFZ) and German Consortium for Translational Cancer Research (DKTK), Heidelberg, Germany
| | - Mirko Völkers
- Department of Internal Medicine III (Cardiology, Angiology, and Pneumology), Heidelberg University Hospital, Heidelberg, Germany
- DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg/Mannheim, Heidelberg, Germany
| | - Georg Friedrich Hoffmann
- Department of General Pediatrics, Division of Neuropediatrics and Metabolic Medicine, Heidelberg University Hospital, Heidelberg, Germany
| | - Matthias Gorenflo
- Department of Pediatric and Congenital Cardiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Alexander Kovacevic
- Department of Pediatric and Congenital Cardiology, Heidelberg University Hospital, Heidelberg, Germany
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Tuberous Sclerosis Complex: Genetic counselling and perinatal follow-up. Arch Pediatr 2022; 29:5S3-5S7. [PMID: 36585068 DOI: 10.1016/s0929-693x(22)00283-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Tuberous sclerosis is an autosomal dominant disorder almost fully penetrant with highly variable expression. Most cases are de novo and this diagnosis is sometimes considered during prenatal life in case of cardiac tumor, unique or multiple. The couple should be referred to a specialized tertiary prenatal care center for expertise and information. Fetal molecular testing of the two genes TSC1 and TSC2 is often informative. Prognosis determination for Tuberous Sclerosis remains a difficult task. Cardiac tumors can be sometimes worrying but only a minority will have a pejorative issue and most cases are asymptomatic without any therapeutic intervention needed. Only few cases need surgical or medical treatment. Patients with Tuberous Sclerosis can develop skin, eye, kidney or lung lesions later on, but they are either of limited consequence or treatable. The crux of the matter is the neurological involvement with frequent intellectual deficiency and epilepsy that can be drug-resistant. The absence of lesion on fetal brain MRI is not predictive of any prognosis and does not rule out Tuberous Sclerosis. De novo TSC2 mutation is a negative prognosis factor and conversely, an inherited TSC1 mutation is a more favorable one, but with a severe issue still possible. Facing this cautious prognosis, some couple may opt for termination of pregnancy while others decide to pursue it. It is then fundamental to set cardiac and neurological regular follow-up for these newborns. © 2022 French Society of Pediatrics. Published by Elsevier Masson SAS. All rights reserved.
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Howell AJ, Vanderlaan RD, Lam CZ, Losenno KL, Putra J, Villemain O. Innocent until proven guilty? Longstanding atrial ectopy preceding cardiac rhabdomyoma diagnosis in tuberous sclerosis complex: a case report. Eur Heart J Case Rep 2022; 6:ytac068. [PMID: 35198853 PMCID: PMC8855693 DOI: 10.1093/ehjcr/ytac068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 12/12/2021] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Cardiac rhabdomyoma are the most common cardiac tumour in childhood and are associated with tuberous sclerosis complex (TSC) up to 96% of infant cases. They classically manifest in the foetal and neonatal period, undergo spontaneous regression in the first years of life and are associated with arrhythmia in part due to interruption of normal conduction pathways by the tumour. CASE SUMMARY We present a case of a 3-year-old boy with a long-standing history of atrial ectopy who was incidentally found to be in atrial flutter due to a new, rapidly growing cardiac rhabdomyoma impacting ventricular function. The boy was later confirmed with further investigation and TSC1 gene test to have TSC. DISCUSSION Cardiac Rhabdomyoma does not always present in the infantile period. Any ongoing or new cardiac concern in patient with TSC, even if seemingly minor, should warrant more frequent cardiac evaluation and investigation.
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Affiliation(s)
- Alison J Howell
- Division of Cardiology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, 555 University Ave, Toronto, M5G 1X8, Ontario, Canada
| | - Rachel D Vanderlaan
- Division of Cardiovascular Surgery, Department of Surgery, The Hospital for Sick Children, 555 University Ave, Toronto, M5G 1X8, Ontario, Canada
| | - Christopher Z Lam
- Department of Diagnostic Imaging, The Hospital for Sick Children, 555 University Ave, Toronto, M5G 1X8, Ontario, Canada
| | - Katie L Losenno
- Division of Cardiology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, 555 University Ave, Toronto, M5G 1X8, Ontario, Canada
| | - Juan Putra
- Division of Pathology, Department of Pediatric Laboratory Medicine, The Hospital for Sick Children, 555 University Ave, Toronto, M5G 1X8, Ontario, Canada
| | - Olivier Villemain
- Division of Cardiology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, 555 University Ave, Toronto, M5G 1X8, Ontario, Canada
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