Radiological differentiation of optic neuritis with myelin oligodendrocyte glycoprotein antibodies, aquaporin-4 antibodies, and multiple sclerosis

Author:

Ramanathan Sudarshini1,Prelog Kristina2,Barnes Elizabeth H3,Tantsis Esther M4,Reddel Stephen W5,Henderson Andrew PD6,Vucic Steve7,Gorman Mark P8,Benson Leslie A8,Alper Gulay9,Riney Catherine J10,Barnett Michael11,Parratt John DE12,Hardy Todd A13,Leventer Richard J14,Merheb Vera4,Nosadini Margherita4,Fung Victor SC15,Brilot Fabienne4,Dale Russell C4

Affiliation:

1. Neuroimmunology group, Institute for Neuroscience and Muscle Research, The Kids Research Institute at the Children’s Hospital at Westmead, Sydney Medical School, University of Sydney, Sydney, Australia/Department of Neurology, Westmead Hospital, and Sydney Medical School, University of Sydney, Sydney, Australia

2. Department of Medical Imaging, the Children’s Hospital at Westmead, Sydney, Australia

3. NHMRC Clinical Trials Centre, University of Sydney, Sydney, Australia

4. Neuroimmunology group, Institute for Neuroscience and Muscle Research, The Kids Research Institute at the Children’s Hospital at Westmead, Sydney Medical School, University of Sydney, Sydney, Australia

5. Department of Neurology, Concord Repatriation General Hospital, Sydney, Australia/Brain and Mind Research Institute, University of Sydney, Sydney, Australia

6. Department of Neurology, Westmead Hospital, and Sydney Medical School, University of Sydney, Sydney, Australia/Department of Ophthalmology, Westmead Hospital, Sydney, Australia

7. Department of Neurology, Westmead Hospital, and Sydney Medical School, University of Sydney, Sydney, Australia/Western Clinical School, University of Sydney, Sydney, Australia

8. Boston Children’s Hospital, Boston, United States of America

9. Children’s Hospital of Pittsburgh, Department of Pediatrics, University of Pittsburgh, School of Medicine, Pittsburgh, United States of America

10. Neurosciences Unit, Lady Cilento Children’s Hospital, Brisbane, Australia; School of Medicine, University of Queensland, Brisbane, Australia

11. Brain and Mind Research Institute, University of Sydney, Sydney, Australia/Department of Neurology, Royal Prince Alfred Hospital, Sydney, Australia

12. Department of Neurology, Royal North Shore Hospital, Central Clinical School, University of Sydney, Sydney, Australia

13. Brain and Mind Research Institute, University of Sydney, Sydney, Australia/Department of Neurology, Concord Repatriation General Hospital, Sydney, Australia

14. Department of Neurology, University of Melbourne Department of Paediatrics, Murdoch Children’s Research Institute, The Royal Children’s Hospital, Melbourne, Australia

15. Department of Neurology, Westmead Hospital, and Sydney Medical School, University of Sydney, Sydney, Australia

Abstract

Background: Recognizing the cause of optic neuritis (ON) affects treatment decisions and visual outcomes. Objective: We aimed to define radiological features of first-episode demyelinating ON. Methods: We performed blinded radiological assessment of 50 patients presenting with first-episode myelin oligodendrocyte glycoprotein (MOG) antibody-associated ON (MOG-ON; n=19), aquaporin-4 (AQP4) antibody-associated ON (AQP4-ON; n=11), multiple sclerosis (MS)-associated ON (MS-ON; n=13), and unclassified ON ( n=7). Results: Bilateral involvement was more common in MOG-ON and AQP4-ON than MS-ON (84% vs. 82% vs. 23%), optic nerve head swelling was more common in MOG-ON (53% vs. 9% vs. 0%), chiasmal involvement was more common in AQP4-ON (5% vs. 64% vs. 15%), and bilateral optic tract involvement was more common in AQP4-ON (0% vs. 45% vs. 0%). Retrobulbar involvement was more common in MOG-ON, whereas intracranial involvement was more common in AQP4-ON. MOG-ON and AQP4-ON had longer lesion lengths than MS-ON. The combination of two predictors, the absence of magnetic resonance imaging brain abnormalities and a higher lesion extent score, showed a good ability to discriminate between an autoantibody-associated ON (MOG or AQP4) and MS. AQP4-ON more frequently had severe and sustained visual impairment. Conclusion: MOG-ON and AQP4-ON are more commonly bilateral and longitudinally extensive. MOG-ON tends to involve the anterior optic pathway, whereas AQP4-ON the posterior optic pathway.

Publisher

SAGE Publications

Subject

Clinical Neurology,Neurology

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