Available literature regarding the cumulative doses of rabbit antithymocyte globulin (rATG) is predominantly limited to retrospective analyses, with conflicting findings. rATG is commonly dosed as 1.5 mg/kg over the course of 4 to 7 days, with increases as needed based upon patient status and provider discretion. The most commonly identified maximum cumulative dose for rATG was ≥6 mg/kg. Low cumulative doses of rATG (2 to ≤5 mg/kg) demonstrated lower rates of acute rejection, decreased risk o...
A 2021 systematic review and meta-analysis examined the association between cumulative doses of rabbit antithymocyte globulin (rATG) and various outcomes in kidney transplant recipients.Data from 23 cohort studies involving 3,457 patients and three randomized controlled trials (RCTs) with 154 patients were identified. The primary endpoints included biopsy-proven acute rejection (BPAR), delayed graft function (DGF), patient mortality, and death-censored graft loss. The findings highlighted that rATG doses of 3–4.5 mg/kg yielded lower rates of BPAR, cytomegalovirus (CMV) and BK virus infections, and malignancies, while maintaining comparable outcomes in DGF, patient mortality, and graft survival relative to higher doses of 4.5–6 mg/kg or >6 mg/kg. Comprehensive dose-response analyses revealed a non-linear association whereby BPAR rates decreased with rATG doses up to 3–4 mg/kg, but increased with higher doses. Similarly, infection rates, particularly CMV and BK virus, rose with higher...
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A search of the published medical literature revealed
6 studies investigating the researchable question:
Is there literature on the cumulative dose of rATG for induction in kidney transplant patients and the risk of acute rejection? And if there is, how large are the sample size of these studies?
Level of evidence
C - Multiple studies with limitations or conflicting results
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[1] Mohammadi K, Khajeh B, Dashti-Khavidaki S, Shab-Bidar S. Association between cumulative rATG induction doses and kidney graft outcomes and adverse effects in kidney transplant patients: a systematic review and meta-analysis. Expert Opin Biol Ther. 2021;21(9):1265-1279. doi:10.1080/14712598.2021.1960978
[2] Alloway RR, Woodle ES, Abramowicz D, et al. Rabbit anti-thymocyte globulin for the prevention of acute rejection in kidney transplantation. Am J Transplant. 2019;19(8):2252-2261. doi:10.1111/ajt.15342