Quantitation of alloantibody concentration can predict patient sensitivity to intravenous immunoglobulin desensitization.

Quantitation of alloantibody concentration can predict patient sensitivity to intravenous immunoglobulin desensitization. Research Abstract Details 

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Quantitation of alloantibody concentration can predict patient sensitivity to intravenous immunoglobulin desensitization. Abstract Text:

Pamela M Kimball,Angela Owens,Eric Gibney,Pamela M Kimball,Angela Owens,Eric Gibney,Pamela M Kimball,Angela Owens,Eric Gibney,

Despite the success of intravenous immunoglobulin (IVIg) desensitization to reduce anti-human leukocyte antigen antibodies, its high failure rate and expense limit its usefulness. We speculated that quantitation of alloantibody concentration could allow early identification of IVIg resistant patients. Patients were described as nonresponders (n=3) or responders (n=8). Panel reactive antibodies (PRA) were determined using Flowbeads and concentration calculated as molecules of equivalent soluble fluorochrome (MESF). PRA was equivalent between nonresponders and responders before (97+/-3% vs. 76+/-20%, P=NS) and after 3 IVIg/plasmapheresis (PP) treatments but lower among responders at end-of-treatment (76+/-20% vs. 44+/-15%, P<0.01). In contrast, pretreatment MESFs were higher (333,640+/-241,352 vs. 38,741+/-5,133, P=0.006) among nonresponders than responders. During treatment, MESFs decreased (P<0.05) in 0 of 3 nonresponders vs. 8 of 8 responders. Final MESFs were higher among nonresponders than responders. We report that quantitation of MESFs allows early identification of IVIg/PP resistant patients. This sensitive and inexpensive technique should allow more effective patient selection and reduce the costs associated with desensitization.

Quantitation of alloantibody concentration can predict patient sensitivity to intravenous immunoglobulin desensitization. Publishing Authors By Initials

PM Kimball,A Owens,E Gibney,PM Kimball,A Owens,E Gibney,PM Kimball,A Owens,E Gibney,

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Quantitation of alloantibody concentration can predict patient sensitivity to intravenous immunoglobulin desensitization. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Transplantation

VOLUME: 84

Page Numbers: 1540-3

Journal Abbreviation: Transplantation

ISSN: 0041-1337

DAY: 15

MONTH: Dec

YEAR: 2007

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LANGUAGE: eng

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AFFILIATION: Department of Transplant Surgery, Virginia Commonwealth University Hospital, Richmond, VA.

Country: United States

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MEDLINETA: Transplantation

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