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Verschoof MA, van Meenen LCC, Andriessen MVE, Brinkman DMC, Kamphuis S, Kuijpers TW, Leavis HL, Legger GE, Mulders-Manders CM, de Pagter APJ, Rutgers A, van Well GTJ, Coutinho JM, Hak AE, van Montfrans JM, Klouwer FCC. Neurological phenotype of adenosine deaminase 2 deficient patients: a cohort study. Eur J Neurol 2024; 31:e16043. [PMID: 37584090 DOI: 10.1111/ene.16043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/22/2023] [Accepted: 08/11/2023] [Indexed: 08/17/2023]
Abstract
BACKGROUND AND PURPOSE Patients with adenosine deaminase 2 (ADA2) deficiency can present with various neurological manifestations due to vasculopathies and autoinflammation. These include ischaemic and hemorrhagic stroke, but less clearly defined neurological symptoms have also been reported. METHODS In this cohort study, patients with confirmed ADA2 deficiency from seven university hospitals in the Netherlands were included. The frequency and recurrence rates of neurological manifestations before and after initiation of tumor necrosis factor α (TNF-α) inhibiting therapy were analyzed. RESULTS Twenty-nine patients were included with a median age at presentation of 5 years (interquartile range 1-17). Neurological manifestations occurred in 19/29 (66%) patients and were the presenting symptom in 9/29 (31%) patients. Transient ischaemic attack (TIA)/ischaemic stroke occurred in 12/29 (41%) patients and was the presenting symptom in 8/29 (28%) patients. In total, 25 TIAs/ischaemic strokes occurred in 12 patients, one after initiation of TNF-α inhibiting therapy and one whilst switching between TNF-α inhibitors. None was large-vessel occlusion stroke. Two hemorrhagic strokes occurred: one aneurysmatic subarachnoid hemorrhage and one spontaneous intracerebral hemorrhage. Most neurological symptoms, including cranial nerve deficits, vertigo, ataxia and seizures, were caused by TIAs/ischaemic strokes and seldom recurred after initiation of TNF-α inhibiting therapy. CONCLUSIONS Neurological manifestations, especially TIA/ischaemic stroke, are common in patients with ADA2 deficiency and frequently are the presenting symptom. Because it is a treatable cause of young stroke, for which antiplatelet and anticoagulant therapy are considered contraindicated, awareness amongst neurologists and pediatricians is important. Screening for ADA2 deficiency in young patients with small-vessel ischaemic stroke without an identified cause should be considered.
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Affiliation(s)
| | - Laura C C van Meenen
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - M Valérie E Andriessen
- Department of Pediatric Immunology and Infectious Diseases, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Daniëlle M C Brinkman
- Department of Pediatrics, Willem-Alexander Children's Hospital, Leiden University Medical Center, Leiden, The Netherlands
| | - Sylvia Kamphuis
- Department of Pediatric Rheumatology, Sophia Children's Hospital, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Taco W Kuijpers
- Department of Pediatric Immunology and Infectious Diseases, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Helen L Leavis
- Department of Rheumatology and Clinical Immunology, University Medical Center and Utrecht University, Utrecht, The Netherlands
| | - G Elizabeth Legger
- Department of Pediatric Rheumatology and Immunology, University Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Catharina M Mulders-Manders
- Department of Internal Medicine, Radboud Expertise Center for Immunodeficiency and Autoinflammation, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Anne P J de Pagter
- Department of Pediatrics, Willem-Alexander Children's Hospital, Leiden University Medical Center, Leiden, The Netherlands
| | - Abraham Rutgers
- Department of Rheumatology and Clinical Immunology, University Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Gijs T J van Well
- Division of Pediatric Infectious Diseases, Immunology & Rheumatology, Department of Pediatrics, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Jonathan M Coutinho
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - A Elisabeth Hak
- Departments of Internal Medicine and Rheumatology and Clinical Immunology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Joris M van Montfrans
- Department of Pediatric Immunology and Infectious Diseases, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Femke C C Klouwer
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Department of Pediatric Neurology, Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
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