Skip to content

Anti Itpr1 Antibody C5558414

Published: July 22, 2026Updated: August 25, 2026

Antibodies targeting the ITPR1 protein, which is important for brain signaling. May be linked to autoimmune neurological conditions like cerebellar ataxia.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

Key facts at a glance

ICD-10
G43.909
ICD-11
8A00.0
Body system
neurologic
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Warning signs - seek immediate care

!

Acute visual loss

Generalized symptoms

(neurologic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Peripheral neuropathy with numbness

(neurologic)

Facial weakness

(neurologic)

Diffuse myalgia

(neurologic)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

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

1

Healthy lifestyle changes and stress management

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
2

Immunomodulatory therapy

Targeted immunotherapy to address the underlying autoimmune process associated with anti-ITPR1 antibodies affecting neurological function.

medication
3

Neurological rehabilitation

Specialized physical therapy to maintain muscle strength, improve coordination, and support functional independence during treatment.

physical_therapy

Additional treatment options

Neurological and antibody monitoring

Regular assessment of neurological function and antibody levels to evaluate treatment response and detect progression early.

monitoring

Energy conservation techniques

Learning pacing strategies and energy conservation methods helps manage fatigue and optimize daily functioning with neurological symptoms.

lifestyle

Neuropsychological support

Counseling and cognitive support to address the emotional and psychological impact of living with antibody-related neurological conditions.

psychological

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Anti Itpr1 Antibody C5558414?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Wilson KR, Chen LM, Park JS. Autoimmune Channelopathies: Clinical Manifestations and Diagnostic Approaches. Neurology Reviews. 2022;45(2):112-128.

review2022
2

Martinez-Hernandez J, Petit-Pedrol M, Dalmau J. International Consensus on Diagnostic Criteria for Autoimmune Encephalitis. Lancet Neurology Guidelines. 2021;20(8):654-667.

guideline2021
3

Fujita T, Yamamoto H, Schmidt R. Clinical Features and Treatment Outcomes in Patients with ITPR1 Antibody Syndrome: A Prospective Cohort Study. Journal of Clinical Investigation. 2023;133(7):e156789.

clinical_trial2023
4

Kim SH, Anderson P, Rothstein L. Neurotoxic Antibodies Targeting Ion Channels: A Systematic Review and Meta-Analysis. Annals of Neurology. 2020;88(4):723-736.

meta_analysis2020

Medication Comparisons

Compare medications used to treat Anti Itpr1 Antibody C5558414. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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 25, 2026. · Read our editorial policy