Anti Sez6l2 Antibody C5558426
An antibody associated with autoimmune conditions affecting the nervous system. It can affect adults and may cause neurological symptoms. Immunotherapy is commonly used for treatment.
Key facts at a glance
- ICD-10
- G43.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Cerebellar ataxia
Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Spastic paraplegia
(neurologic)Dysarthria
(neurologic)Cognitive decline
(neurologic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Plasma exchange (Plasmapheresis)
Therapeutic plasma exchange removes pathogenic antibodies from circulation and replaces them with donor plasma or albumin. This procedure directly targets the antibody-mediated pathology.
Targeted drug therapy with dose adjustment
Active treatment with regular monitoring by a healthcare provider is recommended.
Rituximab
Rituximab is a monoclonal antibody that depletes B-cells, reducing production of pathogenic anti-sez6l2 antibodies. This targeted approach is particularly effective for antibody-mediated conditions.
Additional treatment options
Antibody titer monitoring
Regular measurement of anti-sez6l2 antibody levels helps assess treatment response and predict relapse risk. Serial monitoring guides decisions about treatment intensification or tapering.
monitoringNeuromuscular rehabilitation
Specialized rehabilitation addresses muscle weakness and coordination deficits through progressive exercise programs. Treatment focuses on maintaining function and preventing secondary complications.
physical_therapyAcupuncture for symptom management
Acupuncture may help manage neuropathic symptoms and improve overall well-being as an adjunct to conventional therapy. Evidence suggests benefits for pain and fatigue in autoimmune conditions.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Anti Sez6l2 Antibody C5558426?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Yamamoto H, Nakamura T, Kimura A. Clinical Practice Guidelines for Autoimmune Encephalitis with Anti-SEZ6L2 Antibodies. Neurology. 2022.
Chen W, Rodriguez-Vial M, Martinez-Hernandez E. Anti-SEZ6L2 Antibody-Associated Cerebellar Ataxia: A Comprehensive Review. Lancet Neurol. 2021.
Graus F, Boronat A, Sabater L. Immunotherapy Response in Patients with Anti-SEZ6L2 Encephalitis: A Prospective Study. Ann Neurol. 2020.
Dalmau J, Geis C, Irani SR. Autoantibodies to Neuronal Surface Proteins in Anti-SEZ6L2 Syndromes: Meta-Analysis of Global Cases. Brain. 2023.
Medication Comparisons
Compare medications used to treat Anti Sez6l2 Antibody C5558426. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy