Abstract
Tuberculosis (TB) and sickle cell anaemia (SCA) may affect the same population of patients, particularly in Africa but also in high-TB incidence areas in developed countries. However, few data are available from children with SCA who develop TB. The aim of this study was to describe the clinical features and outcome of TB diagnosed in children with SCA. We conducted a retrospective, descriptive study in three referral centre of Sickle Cell Disease in Paris, France. We included 11 patients with SCA who develop TB. The median age at TB diagnosis was 11 years [7.5–14.5]. Two patients were asymptomatic and nine patients were symptomatic. Six patients had pulmonary TB (pulmonary, pleural and mediastinal lesions). Five patients had extrapulmonary TB (osteoarticular TB, hepatic TB, cervical and mediastinal TB). Mycobacterium tuberculosis was isolated in four of the 11 cases. All patients recovered after a median of 6 months of anti-TB treatment. The localisation of TB and outcome after treatment in our SCA patients were similar to the one observed in an age-and sex-matched control group of non-SCA patient with TB.
Conclusion: despite the low number of patients included in our study, SCA does not seem to be a risk factor for severe TB.
What is Known: • Tuberculosis (TB) remains a global health problem particularly in developing countries, and Sickle cell anaemia (SCA) is currently one of the most common genetic diseases in the world that mainly affects African populations. • Very few data are available on TB in SCA patients. |
What is New: • The features of TB in children with SCA seem to be comparable to those expected in general population, with favourable outcomes in response to standard treatment. • Monitoring the dosage of anti-TB treatments could be of interest because of the possible impact of SCA on drug metabolism. |
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Abbreviations
- BCG:
-
Bacille Calmette–Guerin
- CT scan:
-
Computerized tomography scan
- HbS:
-
Haemoglobin S
- HIV:
-
Human immunodeficiency virus
- IGRA:
-
Interferon gamma release assay
- LBTI:
-
Latent tuberculosis infections
- SCA:
-
Sickle cell anaemia
- TB:
-
Tuberculosis
- TST:
-
Tuberculosis skin test
- WHO:
-
World Health Organization
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BK and AD conceptualized and designed the study. ND and BK have written the manuscript. AF, BK and AD contributed to the follow-up of patients with tuberculosis. LH, MB and FM contributed to the follow-up of patients with sickle cell disease. CP and MO participated in data collection.
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No external funding was secured for this study.
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The authors declare that they have no conflict of interest.
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The authors have no financial relationships relevant to this article to disclose.
Ethical approval
This study was declared to the French National Commission of Data Processing, Files and Individual Liberties and was approved by the local ethics committee at the Robert Debré Hospital in Paris, France (IRB no: 188317v0).
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This article does not contain any studies with human participants or animals performed by any of the authors.
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Droz, N., De Lauzanne, A., Holvoet, L. et al. Tuberculosis in children with sickle cell anaemia: a retrospective study in French tertiary care centres. Eur J Pediatr 176, 723–729 (2017). https://doi.org/10.1007/s00431-017-2905-0
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DOI: https://doi.org/10.1007/s00431-017-2905-0