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the claim

TRALI is caused by an antibody response in the host to donor antibodies within a plasma product.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
3 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that TRALI is caused by an antibody response in the host to donor antibodies within a plasma product?

Yes. Transfusion-related acute lung injury (TRALI) is well-documented as being driven by an immune response involving donor antibodies (such as anti-HLA or anti-HNA) directed against recipient leukocyte and endothelial antigens.

Verdict: SUPPORTED · 3 sources for, 0 against · Last checked

The analysis

The retrieved papers consistently support the classic immunological mechanism of TRALI, wherein donor-derived antibodies react against recipient antigens, leading to severe acute lung injury. While rare reverse mechanisms (recipient antibodies against donor antigens) are also discussed in literature, the primary and well-established pathophysiology remains donor antibody-mediated TRALI.

Evidence for · 3
Antibody‐mediated (immune) transfusion‐related acute lung injury
2010
This paper highlights that antibody-mediated transfusion-related acute lung injury (immune TRALI), often caused by donor leukocyte antibodies such as anti-HLA and anti-HNA directed against the recipient, is the most common cause of major morbidity and mortality.
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Bux, J. (2010). Antibody‐mediated (immune) transfusion‐related acute lung injury. doi.org. https://doi.org/10.1111/j.1423-0410.2010.01392.x

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More for · 2
Transfusion-related acute lung injury (TRALI): Current understanding, challenges, and future directions.
2025
This review discusses antibody-dependent pathways and donor-specific factors, including transfused antibodies that drive TRALI pathogenesis.
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FA, K. (2025). Transfusion-related acute lung injury (TRALI): Current understanding, challenges, and future directions.. doi.org. https://doi.org/10.15537/smj.2025.46.8.20250233

Beyond histocompatibility: human leukocyte antigen as a cross-disciplinary platform for immune recognition and clinical decision-making.
2026
This review affirms that in transfusion medicine, donor antibodies contribute to transfusion-related acute lung injury by reacting with recipient cells.
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S, M., J, D., AK, M., S, S., M, M., S, H., FH, A., & A, D. (2026). Beyond histocompatibility: human leukocyte antigen as a cross-disciplinary platform for immune recognition and clinical decision-making.. doi.org. https://doi.org/10.3389/fimmu.2026.1931212

What does the evidence say?

The retrieved papers consistently support the classic immunological mechanism of TRALI, wherein donor-derived antibodies react against recipient antigens, leading to severe acute lung injury. While rare reverse mechanisms (recipient antibodies against donor antigens) are also discussed in literature, the primary and well-established pathophysiology remains donor antibody-mediated TRALI.

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