Volume 203, Issue 3 pp. 460-467
ORIGINAL PAPER

Neurofilament light chain: A potential biomarker for cerebrovascular disease in children with sickle cell anaemia

Nancy S. Green

Corresponding Author

Nancy S. Green

Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA

Correspondence

Nancy S. Green, Department of Pediatrics, Columbia University Medical Center, New York, NY, USA.

Email: [email protected]

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Caterina Rosano

Caterina Rosano

Department of Epidemiology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA

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Paul Bangirana

Paul Bangirana

Department of Psychiatry, Makerere University College of Health Sciences, Kampala, Uganda

Global Health Uganda, Kampala, Uganda

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Robert Opoka

Robert Opoka

Department of Paediatrics and Child Health, Makerere University College of Health Sciences, Kampala, Uganda

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Deogratias Munube

Deogratias Munube

Department of Paediatrics and Child Health, Makerere University College of Health Sciences, Kampala, Uganda

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Philip Kasirye

Philip Kasirye

Department of Paediatrics and Child Health, Makerere University College of Health Sciences, Kampala, Uganda

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Michael Kawooya

Michael Kawooya

Department of Radiology, Makerere University College of Health Sciences, Kampala, Uganda

Ernest Cook Ultrasound Research and Education Institute (ECUREI), Mengo Hospital, Kampala, Uganda

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Samson K. Lubowa

Samson K. Lubowa

Department of Radiology, Makerere University College of Health Sciences, Kampala, Uganda

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Ezekiel Mupere

Ezekiel Mupere

Department of Paediatrics and Child Health, Makerere University College of Health Sciences, Kampala, Uganda

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Andrea Conroy

Andrea Conroy

Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana, USA

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Frank J. Minja

Frank J. Minja

Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Georgia, USA

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Amelia K. Boehme

Amelia K. Boehme

Department of Neurology, Columbia University Irving Medical Center, New York, New York, USA

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Min Suk Kang

Min Suk Kang

Department of Neurology, Columbia University Irving Medical Center, New York, New York, USA

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Lawrence S. Honig

Lawrence S. Honig

Department of Neurology, Columbia University Irving Medical Center, New York, New York, USA

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Richard Idro

Richard Idro

Department of Paediatrics and Child Health, Makerere University College of Health Sciences, Kampala, Uganda

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First published: 15 August 2023
Citations: 1

Summary

Cerebrovascular injury frequently occurs in children with sickle cell anaemia (SCA). Limited access to magnetic resonance imaging and angiography (MRI-MRA) in sub-Saharan Africa impedes detection of clinically unapparent cerebrovascular injury. Blood-based brain biomarkers of cerebral infarcts have been identified in non-SCA adults. Using plasma samples from a well-characterized cross-sectional sample of Ugandan children with SCA, we explored relationships between biomarker levels and MRI-detected cerebral infarcts and transcranial Doppler (TCD) arterial velocity. Testing was performed using a 4-plex panel of brain injury biomarkers, including neurofilament light chain (NfL), a central nervous system neuron-specific protein. Mean biomarker levels from the SCA group (n = 81) were similar to those from non-SCA sibling controls (n = 54). Within the SCA group, NfL levels were significantly higher in those with MRI-detected infarcts compared to no infarcts, and higher with elevated TCD velocity versus normal velocity. Elevated NfL remained strongly associated with MRI-detected infarcts after adjusting for sex and age. All non-SCA controls and SCA participants lacking MRI-detected infarcts had low NfL levels. These data suggest potential utility of plasma-based NfL levels to identify children with SCA cerebrovascular injury. Replication and prospective studies are needed to confirm these novel findings and the clinical utility of NfL versus MRI imaging.

Graphical Abstract

A sample of children with sickle cell anaemia (SCA) and sibling/family controls in Uganda were tested for four blood-based biomarkers. Neurofilament light chain (NfL) strongly correlated with SCA MRI-detected cerebral infarcts.

CONFLICT OF INTEREST STATEMENT

The authors have no relevant conflicts to disclose.

DATA AVAILABILITY STATEMENT

Data sharing is available upon request to the corresponding author, except where data access is restricted for protection of the privacy of research participants.

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