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06 September 2022 : Original article  

[In Press] Reduced Risk of Chronic Graft-Versus-Host Disease (cGVHD) by Rabbit Anti-Thymocyte Globulin (ATG) in Patients Undergoing Matched Sibling Donor Transplantation in Hematological Malignancies

Shu Fang12ABCDEF, Nan Wang23ABCF, Lili Wang2ABCD, Jishan Du23BCF, Jingjing Yang23BCF, Yanan Wen23BCF, Yan Wei23BCF, Kun Qian21BCD, Hao Wang23ABF, Yifan Jiao23BCF, Chunji Gao21ACEG, Liping Dou2ABDEG

DOI: 10.12659/AOT.937356

Ann Transplant In Press; DOI: 10.12659/AOT.937356  

Available online: 2022-09-06, In Press, Corrected Proof

Publication in the "In-Press" formula aims at speeding up the public availability of the pending manuscript while waiting for the final publication. The assigned DOI number is active and citable. The availability of the article in the Medline, PubMed and PMC databases as well as Web of Science will be obtained after the final publication according to the journal schedule

Abstract

BACKGROUND
With the addition of anti-thymocyte globulin (ATG) to GVHD prophylaxis in patients undergoing transplantation of peripheral blood stem cells (PBSCT), the incidence of cGVHD decreases. However, the optimal dose and timing of ATG remain undetermined.
MATERIAL AND METHODS
In this historical controlled trial, data from 85 patients who had hematological malignancies and underwent matched sibling donor (MSD)-PBSCT were used to analyze the effectiveness of rabbit ATG (rATG) for prophylaxis of GVHD. Forty patients received 5 mg/kg rATG used for days -5 to -2, and 45 patients did not receive ATG.
RESULTS
All patients had successful engraftment except for 2 in the non-ATG group, who had platelet engraftment failure. The 2-year cumulative incidence of chronic GVHD (cGVHD) in the ATG group versus non-ATG group was 19.3% (95% CI, 8.4-33.6%) versus 61.4% (95% CI, 45.4-73.9%) (P<0.001), and in those with moderate to severe cGVHD it was 11.0% (95% CI, 3.4-23.6%) versus 31.8% (95% CI, 18.8-45.6%) (P=0.029), respectively. The 2-year cumulative incidence of non-relapse mortality and relapse (CIR) were 0% versus 15.5% (95% CI, 6.8-27.5%) (P=0.018), and 53.3% (95% CI, 35.6-68.1%) versus 26.7% (95% CI, 14.9-40.0%) (P=0.019), respectively. No differences were found in other survival outcomes. In the multivariate analysis, ATG was an independent protective factor for moderate to severe cGVHD (HR=0.314, 95% CI, 0.103-0.958, P=0.042), and was an independent poor risk factor for CIR (HR=2.337, 95% CI, 1.133-4.822, P=0.022).
CONCLUSIONS
ATG in our strategy was effective for prophylaxis of cGVHD, whereas the relapse rate was increased in patients with rATG.

Keywords: Graft vs Host Disease; Peripheral Blood Stem Cell Transplantation; Recurrence; thymoglobulin

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Reduced Risk of Chronic Graft-Versus-Host Disease (cGVHD) by Rabbit Anti-Thymocyte Globulin (ATG) in Patien...

Ann Transplant In Press; DOI: 10.12659/AOT.937356  

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Annals of Transplantation eISSN: 2329-0358
Annals of Transplantation eISSN: 2329-0358