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Bone Marrow Transplant ; 51(4): 568-72, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26691423

RESUMO

There is significant variability in the serum concentrations of tacrolimus attained early post transplant due to drug interactions and genomic variation. We evaluated whether tacrolimus concentrations early post transplant correlated with incidence of acute GvHD in 120 consecutive patients allografted with a uniform reduced-intensity conditioning regimen. All patients received standard prophylaxis with oral tacrolimus and IV methotrexate. The primary variable of interest was mean weekly tacrolimus concentrations in the initial 4 weeks post transplant. In multivariate analysis, week 1 tacrolimus concentration was an independent predictor of acute grade 2-4 GvHD (hazard ratio (HR), 0.90; 95% confidence interval (CI), 0.84-0.97; P<0.01). This association was driven by a lower risk of acute grade 2-4 GvHD in patients with week 1 tacrolimus concentrations >12 ng/mL (HR, 0.47; 95% CI, 0.25-0.88; P=0.02). Week 1 tacrolimus concentrations were not associated with chronic GvHD, relapse or overall survival. Lower tacrolimus concentrations at weeks 2, 3 and 4 were not associated with a higher incidence of GvHD. In summary, we found that higher tacrolimus concentrations during the first week after allografting with a reduced-intensity conditioning regimen were associated with significantly reduced risk of acute grade 2-4 GvHD without increasing risk of relapse.


Assuntos
Doença Enxerto-Hospedeiro , Doenças Hematológicas , Transplante de Células-Tronco , Tacrolimo , Condicionamento Pré-Transplante , Doença Aguda , Administração Oral , Adulto , Idoso , Aloenxertos , Feminino , Doença Enxerto-Hospedeiro/sangue , Doença Enxerto-Hospedeiro/mortalidade , Doença Enxerto-Hospedeiro/prevenção & controle , Doenças Hematológicas/sangue , Doenças Hematológicas/mortalidade , Doenças Hematológicas/terapia , Humanos , Masculino , Metotrexato/administração & dosagem , Metotrexato/farmacocinética , Pessoa de Meia-Idade , Tacrolimo/administração & dosagem , Tacrolimo/farmacocinética , Fatores de Tempo
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