Diagnostic algorithm for relapsing acquired demyelinating syndromes in children

Yael Hacohen, Kshitij Mankad, W K Chong, Frederik Barkhof, Angela Vincent, Ming Lim, Evangeline Wassmer, Olga Ciccarelli, Cheryl Hemingway

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

OBJECTIVE: To establish whether children with relapsing acquired demyelinating syndromes (RDS) and myelin oligodendrocyte glycoprotein antibodies (MOG-Ab) show distinctive clinical and radiologic features and to generate a diagnostic algorithm for the main RDS for clinical use.

METHODS: A panel reviewed the clinical characteristics, MOG-Ab and aquaporin-4 (AQP4) Ab, intrathecal oligoclonal bands, and Epstein-Barr virus serology results of 110 children with RDS. A neuroradiologist blinded to the diagnosis scored the MRI scans. Clinical, radiologic, and serologic tests results were compared.

RESULTS: The findings showed that 56.4% of children were diagnosed with multiple sclerosis (MS), 25.4% with neuromyelitis optica spectrum disorder (NMOSD), 12.7% with multiphasic disseminated encephalomyelitis (MDEM), and 5.5% with relapsing optic neuritis (RON). Blinded analysis defined baseline MRI as typical of MS in 93.5% of children with MS. Acute disseminated encephalomyelitis presentation was seen only in the non-MS group. Of NMOSD cases, 30.7% were AQP4-Ab positive. MOG-Ab were found in 83.3% of AQP4-Ab-negative NMOSD, 100% of MDEM, and 33.3% of RON. Children with MOG-Ab were younger, were less likely to present with area postrema syndrome, and had lower disability, longer time to relapse, and more cerebellar peduncle lesions than children with AQP4-Ab NMOSD. A diagnostic algorithm applicable to any episode of CNS demyelination leads to 4 main phenotypes: MS, AQP4-Ab NMOSD, MOG-Ab-associated disease, and antibody-negative RDS.

CONCLUSIONS: Children with MS and AQP4-Ab NMOSD showed features typical of adult cases. Because MOG-Ab-positive children showed notable and distinctive clinical and MRI features, they were grouped into a unified phenotype (MOG-Ab-associated disease), included in a new diagnostic algorithm.

Original languageEnglish
Pages (from-to)269-278
Number of pages10
JournalNeurology
Volume89
Issue number3
DOIs
Publication statusPublished - 18 Jul 2017

Cite this

Hacohen, Y., Mankad, K., Chong, W. K., Barkhof, F., Vincent, A., Lim, M., ... Hemingway, C. (2017). Diagnostic algorithm for relapsing acquired demyelinating syndromes in children. Neurology, 89(3), 269-278. https://doi.org/10.1212/WNL.0000000000004117