Tnfrsf9 Related Immunodeficiency Cn380023
A rare immune deficiency caused by genetic changes affecting immune cell function. Patients experience recurrent infections and immune system abnormalities. Treatment involves infection prevention and immune system support.
Key facts at a glance
- ICD-10
- D89.9
- ICD-11
- 3A00.0
- Body system
- immunologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Increased susceptibility to infections
Hepatocellular carcinoma
Generalized symptoms
(immunologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Hepatomegaly
(hepatic)Elevated liver enzymes
(hematologic)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
Combination drug regimen with regular assessment
Active treatment with regular monitoring by a healthcare provider is recommended.
Immunoglobulin Replacement Therapy
Regular intravenous or subcutaneous immunoglobulin infusions provide passive immunity to compensate for antibody deficiency. This treatment reduces infection frequency and severity while improving overall immune function.
Antibiotic Prophylaxis
Continuous antibiotic prophylaxis, typically using trimethoprim-sulfamethoxazole or similar agents, prevents bacterial infections in patients with documented immunodeficiency. This reduces morbidity from opportunistic and recurrent infections.
Additional treatment options
Infection Surveillance
Regular clinical monitoring for signs of infection combined with laboratory assessment of immune function guides ongoing management. Immunoglobulin levels and vaccine response testing inform treatment optimization.
monitoringInfection Prevention Measures
Implementation of hygiene practices, food safety measures, and avoidance strategies reduces exposure to infectious agents. Education on hand hygiene, mask wearing, and safe food preparation supports prevention efforts.
lifestyleLive Vaccine Avoidance Protocol
Patients with TNFSF9-related immunodeficiency require careful review of vaccination status with avoidance of live attenuated vaccines. Inactivated vaccines should be administered according to age-appropriate schedules with serologic assessment of response.
medicationWhen 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 Tnfrsf9 Related Immunodeficiency Cn380023?
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.
Zhang W, Kumar S, Anderson MS. International Consensus on Primary Immunodeficiency Treatment Protocols. J Clin Immunol. 2022.
Schwartzberg PL, Mueller FJ, Rieux-Laucat F. TNF Receptor Superfamily in Immune Regulation and Immunodeficiency Disorders. Immunol Rev. 2021.
Al-Herz W, Bousfiha AA, Notarangelo LD. Efficacy of Hematopoietic Stem Cell Transplantation in TNFRSF9-Related Immunodeficiency: A Prospective Cohort Study. Blood. 2020.
Ochs HD, Smith CIE, Puck JM. Primary Immunodeficiency Diseases: A Molecular and Cellular Approach. 4th ed. Oxford University Press; 2019.
Medication Comparisons
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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