Abstract
Objective: Limited evidence is available about the early cardiac manifestation of Fabry disease (FD) in children. We aimed to evaluate cardiac involvement in children with FD by analysing serial structural and electrocardiographic changes.
Methods: The data were acquired from 22 children with FD [11 males; median age 9.8 (ranging 2.5–16) years]. Seven patients (5 males) were on enzyme replacement therapy (ERT) with Agalasidase alpha. Echocardiography, ECG and 24-h ECG monitoring recordings were acquired during routine annual clinical controls. ECG data were compared to a group of age-and gender-matched controls.
Results: At baseline, ECG and ECHO parameters of left ventricular mass were similar in both males and females. Three boys (all were on ERT) developed left ventricular hypertrophy (LVH) during two-year follow-up. The progression to LVH was accompanied by the appearance of frequent ventricular premature beats in two cases and supraventricular premature beats (SPBs) with T wave inversion in one case. T wave inversion and SPBs were detected in two younger relatives of a patient with LVH, in the absence of detectable LVH. Seven out of 22 patients had T wave abnormalities. Five of them were males (p = 0.03) all carrying the N215S mutation (p = 0.03). At baseline, median PR intervals were prolonged in FD subjects compared to controls [143 (122–177) vs. 122 (82–165) ms; p < 0.0001].
Conclusions: Cardiac complications of FD become apparent in childhood as subtle changes with slow but detectable progression over time, with males more frequently affected than females. Progression of LVH was apparent in three children despite ERT.
Competing interests: None declared
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Abbreviations
- AVB:
-
AV block
- ECHO:
-
Echocardiography
- ERT:
-
Enzyme replacement therapy
- FD:
-
Fabry disease
- Holter ECG:
-
24-h ECG monitoring
- HR:
-
Heart rate
- LV:
-
Left ventricle
- LVH:
-
Left ventricular hypertrophy
- M:
-
Month
- SPBs:
-
Supraventricular premature beats
- UR:
-
Uma Ramaswami
- VPBs:
-
Ventricular premature beats
- Y:
-
Year
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Acknowledgements
We thank the metabolic nurses and the cardiology technicians at Addenbrooke’s Hospital for their help with collating data and performing cardiac ECHO and Holter monitoring.
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Communicated by: Verena Peters
Appendices
Synopsis
Early changes in ECG/Holter ECG and echocardiography related to cardiac involvement caused by Fabry disease can be observed in children, both males and females.
Details of the Contributions of Individual Authors
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Stepan Havranek: analysis and interpretation of data; drafting of manuscript
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Ales Linhart: analysis and interpretation of data; revising article critically for important intellectual content
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Zuzana Urbanova: analysis of data; revising article critically for important intellectual content
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Uma Ramaswami: Developing concept, design of study, patient follow-up, data collection; revising article critically for important intellectual content
Guarantor Author
Dr. Uma Ramaswami MD, FRCPCH.
Funding
Supported by Program for research development in Charles University: PRVOUK-P35/LF1/5.
The authors confirm independence from the sponsors; the content of the article has not been influenced by the sponsors.
Details of Ethics Approval
The study was approved by Norfolk Research Ethics Committee. Reference number: 11/H0310/4.
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None declared.
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Havranek, S., Linhart, A., Urbanova, Z., Ramaswami, U. (2013). Early Cardiac Changes in Children with Anderson–Fabry Disease. In: Zschocke, J., Gibson, K., Brown, G., Morava, E., Peters, V. (eds) JIMD Reports - Volume 11. JIMD Reports, vol 11. Springer, Berlin, Heidelberg. https://doi.org/10.1007/8904_2013_222
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DOI: https://doi.org/10.1007/8904_2013_222
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