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. 2014 Aug 27;98(4):470-4.
doi: 10.1097/TP.0000000000000182.

Anti-Angiotensin type 1 receptor antibodies in chronic graft-versus-host disease

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Anti-Angiotensin type 1 receptor antibodies in chronic graft-versus-host disease

Andrada Chiron et al. Transplantation. .

Abstract

Background: Activating anti-angiotensin type 1 receptor antibodies (AT1R-AA) have been described in patients with systemic scleroderma, an auto-immune disorder with clinical fibrotic features. Chronic graft-versus-host disease (cGvHD) after hematopoietic stem cell transplantation may have clinical fibrotic features, whose pathogenesis may be similar with systemic sclerosis.

Objective: To evaluate the presence of AT1R-AA and their association with clinical and biological symptoms in cGvHD patients.

Material and methods: Sera from 87 patients including 45 extensive cGvHD and 42 hematopoietic stem cell transplantation patients without cGvHD were retrospectively analyzed for the presence of AT1R-AA using an enzymatic immunoassay.

Results: The frequency of AT1R-AA was significantly increased (odds ratio [OR]=3.4, P=0.04) in the cGvHD group (24.4%) compared with the non-cGvHD group (7.1%). In the cGvHD group the positivity of AT1R-AA was significantly associated with: i/ the presence of antinuclear antibodies (OR=5.9, P=0.04) ii/ a more severe global and organ-specific cGvHD scoring (P<0.05), iii/ the presence of active skin or mucosal erosions (OR=19.2, P<0.01). There was no difference between the number and the types of organs involved by the cGvHD between the AT1R-AA-positive versus AT1R-AA-negative subgroups.

Conclusion: This preliminary study suggests a potential role and prognostic value of AT1R-AA in cGvHD.

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