Abstract
In May 2003, Madrid established the universal newborn screening (NBS) for sickle cell disease (SCD). However, there are no studies resembling the evolution of a SCD neonate cohort followed according to national guidelines in Spain. The aim of this study is to describe the morbimortality and the stroke prevention programme in patients diagnosed by SCD NBS in Madrid. This is a multicentre, observational, prospective cohort study between 2003 and 2018; 187 patients diagnosed with SCD were included (151 HbSS, 6 HbSβ0, 27 HbSC, 3 HbSβ +), and median follow-up was 5.2 years (0.03–14.9). There were 5 deaths: 2 related to SCD in patients with severe genotype (HbSS/HbSβ0). Overall survival reached 95% and SCD-related survival 96.8%. The most frequent events were fever without focus, vaso-occlusive crises and acute chest syndromes. Eight strokes occurred in 5 patients which led to a 90.7% stroke-free survival in severe genotype patients (first stroke rate, 0.54 per 100 patient-years). Transcranial Doppler (TCD) was performed in 95% of eligible patients; 75% of children with pathological TCD remained stroke-free. Regarding HbSS/HbSβ0 patients, 50.1% received hydroxyurea and 9.5% haematopoietic stem cell transplantation. This study reflects the evolution of Madrid SCD cohort and provides morbimortality data similar to other developed countries.
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Data availability
The data used in this study are not available.
Abbreviations
- ACS :
-
Acute chest syndrome
- CSSCD :
-
The Cooperative Study of Sickle Cell Disease
- VOC :
-
Vaso-occlusive crisis
- EAF :
-
Erythrocytapheresis
- GVHD :
-
Graft-versus-host disease
- HGUGM :
-
Gregorio Marañón General University Hospital
- HSCT :
-
Haematopoietic stem cell transplantation
- HU :
-
Hydroxyurea
- MO :
-
Bone marrow
- MRA :
-
Magnetic resonance angiography
- MRI :
-
Magnetic resonance imaging
- NBS :
-
Newborn screening
- OS :
-
Overall survival
- SCD :
-
Sickle cell disease
- TCD :
-
Transcranial Doppler ultrasound
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Acknowledgements
The authors wish to thank patients, their families, neonatal screening laboratory and also doctors and nursing staff at participating hospitals for their important work.
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MGM and EC designed and directed the project; MGM has mainly performed the data collection, but with the participation of EJBC, ACB, LLO, VPA, SSR, ES, CVR and MLR. MGM has performed the data analysis with the help of the biostatistician JMB. MGM has written the article with the collaboration and revision of EC, CB and ACB.
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This is a human study that has been approved by the ethics committee “COMITÉ de ÉTICA HOSPITAL GENERAL UNIVERSITARIO GREGORIO MARAÑÓN” and has therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008. The study has also been approved by the Spanish Data Protection Agency.
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García-Morin, M., Bardón-Cancho, E.J., Beléndez, C. et al. Madrid Newborn Sickle Cell Disease Cohort: clinical outcomes, stroke prevention and survival. Ann Hematol 103, 373–383 (2024). https://doi.org/10.1007/s00277-023-05539-1
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DOI: https://doi.org/10.1007/s00277-023-05539-1