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  • Title: Impact of cyclosporine-A concentration on the incidence of severe acute graft-versus-host disease after allogeneic stem cell transplantation.
    Author: Malard F, Szydlo RM, Brissot E, Chevallier P, Guillaume T, Delaunay J, Ayari S, Dubruille V, Le Gouill S, Mahe B, Gastinne T, Blin N, Saulquin B, Harousseau JL, Moreau P, Mohty M.
    Journal: Biol Blood Marrow Transplant; 2010 Jan; 16(1):28-34. PubMed ID: 20053329.
    Abstract:
    This single-center retrospective study analyzed 85 consecutive patients who underwent allogeneic stem cell transplantation (allo-SCT) with the aim to assess whether there is a correlation between exposure to cyclosporine-A (CsA; as measured by CsA concentrations during the first month after allo-SCT) and the risk for developing severe grade III-IV acute graft-versus-host disease (aGVHD). The median concentrations of CsA in the blood at 1, 2, 3, and 4 weeks after allo-SCT were 348 (range: 172-733), 284 (range: 137-535), 274 (range: 107-649), and 247 (range: 37-695) ng/mL, respectively. Overall, grade II-IV aGVHD occurred in 36 patients (42%) at a median of 29 (range: 6-100) days after allo-SCT. The incidence of grade III-IV aGVHD (n = 20) was 23% (95% confidence interval [CI], 14%-32%). In univariate analysis, patients receiving allo-SCT from an HLA-matched unrelated donor had a higher risk of grade III-IV aGVHD, and patients having the lowest CsA concentration in the first and second weeks after allo-SCT had a significantly higher risk of grade III-IV aGVHD. In a multivariate logistic regression analysis, a higher CsA concentration measured during the first week following graft infusion was the strongest parameter significantly associated with a reduced risk of severe grade II-IV aGVHD (P = .012; relative risk [RR] = 0.24; 95% CI, 0.08-0.73). Of note, when adjusted by donor type, CsA concentration in week 1 remained significantly associated with risk of severe grade II-IV aGVHD (P = .014). We conclude that precise monitoring of CsA concentrations and adjustment of CsA dose early after allo-SCT may be effective to prevent onset of severe aGVHD.
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