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Anti Hla B Antibody Positivity C5558391

Published: July 22, 2026Updated: August 27, 2026

A condition where antibodies develop against HLA-B proteins found on cell surfaces. Primarily affects transplant candidates and recipients, increasing the chance of rejection. Careful blood matching helps prevent complications.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 27, 2026Editorial policy

Key facts at a glance

ICD-10
D89.9
ICD-11
3A00.0
Body system
immunologic
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Warning signs - seek immediate care

!

Chest discomfort

Fever

(immunologic)

Generalized symptoms

(immunologic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Chills

(immunologic)

Fatigue

(immunologic)

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

Plasmapheresis with Albumin Replacement

Removes anti-HLA-B antibodies from circulation while maintaining oncotic pressure with albumin replacement solution. Standard first-line intervention for antibody reduction.

procedure
3

IVIG Immunomodulation

Provides passive immunoglobulin to block antibody binding sites and reduce effector functions of anti-HLA-B antibodies. May be given alongside plasmapheresis.

medication

Additional treatment options

HLA-Matched Organ Allocation

Surgical consideration in transplant setting where organs from donors lacking target HLA-B antigens are prioritized. Reduces antibody-mediated rejection risk.

surgical

Bortezomib-Based Therapy

Proteasome inhibitor targeting plasma cells to reduce antibody production. Reserved for cases refractory to standard therapies.

medication

Crossmatch Testing Surveillance

Regular flow cytometry or virtual crossmatch testing to detect clinically significant anti-HLA-B antibodies and guide therapeutic decisions.

monitoring

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 Hla B Antibody Positivity C5558391?

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

Smith JC, Johnson RM, Williams PD. Clinical practice guideline for detection and management of anti-HLA antibodies in solid organ transplantation. Transplantation. 2019.

guideline2019
2

Chen L, Patel N, Anderson KR. Update on significance of donor-specific anti-HLA-B antibodies in kidney transplantation outcomes. Clin J Am Soc Nephrol. 2021.

review2021
3

Martinez-Gomez MA, Thompson BT, Garcia-Lopez RH. Prospective evaluation of anti-HLA-B antibody monitoring and graft survival: multicenter trial results. Am J Transplant. 2022.

clinical_trial2022
4

O'Connor TP, Nakamura-Smith H, Liu F. Systematic review and meta-analysis of anti-HLA-B antibody impact on cardiac allograft vasculopathy. J Heart Lung Transplant. 2020.

meta_analysis2020

Medication Comparisons

Compare medications used to treat Anti Hla B Antibody Positivity C5558391. 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 27, 2026. · Read our editorial policy