PMID- 22499411 OWN - NLM STAT- MEDLINE DCOM- 20120917 LR - 20131121 IS - 1875-9114 (Electronic) IS - 0277-0008 (Linking) VI - 32 IP - 5 DP - 2012 May TI - Possible correlation of sirolimus plasma concentration with sinusoidal obstructive syndrome of the liver in patients undergoing myeloablative allogeneic hematopoietic cell transplantation. PG - 441-5 LID - 10.1002/j.1875-9114.2012.01034.x [doi] AB - STUDY OBJECTIVES: To determine the frequency of sinusoidal obstructive syndrome (SOS) in patients undergoing allogeneic hematopoietic cell transplantation who received graft-versus-host disease (GVHD) prophylaxis with sirolimus and tacrolimus, and to assess whether the occurrence of SOS correlates with immunosuppressant levels. DESIGN: Retrospective cohort study. SETTING: Hematopoietic cell transplant unit at an academic medical center. PATIENTS: Fifty-nine adults who received myeloablative preparative regimens for transplantation of any hematologic malignancy and received sirolimus and tacrolimus for GVHD prophylaxis between January 1, 2007, and May 1, 2009; all donors and transplant recipients were human leukocyte antigen (HLA) matched for at least HLA-A, -B, -C, and -DRB1. MEASUREMENTS AND MAIN RESULTS: The primary outcome was the occurrence of SOS after hematopoietic cell transplantation. Plasma concentrations of sirolimus and tacrolimus and the summative levels of sirolimus and tacrolimus were then compared in patients who developed SOS with those who did not develop SOS. Trough levels were measured from blood samples collected 30-60 minutes before the morning doses of sirolimus and tacrolimus on days 0-35, or until the development of SOS. Of the 59 patients, 12 (20%) developed SOS. The mean sirolimus level was significantly higher in patients who developed SOS relative to those who did not develop SOS (10.5 vs 8.7 ng/ml, p=0.003). The mean summative trough level of sirolimus and tacrolimus was also significantly higher in those who developed SOS compared with those who did not (19.7 vs 17.1 ng/ml, p=0.003). The mean +/- SD time to the occurrence of SOS was 28 +/- 8.7 days. The median time to death was 101 days for patients who developed SOS compared with 433 days for patients who did not develop SOS (p=0.002). CONCLUSION: Sirolimus plasma concentration may correlate with the development of delayed SOS; however, further research is needed to prospectively evaluate the role of sirolimus exposure in the pathogenesis of SOS. CI - (c) 2012 Pharmacotherapy Publications, Inc. FAU - Kiel, Patrick J AU - Kiel PJ AD - Department of Pharmacy, Indiana University Simon Cancer Center, Indianapolis, Indiana 46202, USA. pkiel@iuhealth.org FAU - Vargo, Craig A AU - Vargo CA FAU - Patel, Gourang P AU - Patel GP FAU - Rosenbeck, Lindsay L AU - Rosenbeck LL FAU - Srivastava, Shivani AU - Srivastava S LA - eng PT - Journal Article DEP - 20120412 PL - United States TA - Pharmacotherapy JT - Pharmacotherapy JID - 8111305 RN - 0 (Immunosuppressive Agents) RN - W36ZG6FT64 (Sirolimus) SB - IM MH - Adult MH - Cohort Studies MH - Female MH - Graft vs Host Disease/*prevention & control MH - *Hematopoietic Stem Cell Transplantation MH - Hepatic Veno-Occlusive Disease/blood/*chemically induced/epidemiology MH - Humans MH - Immunosuppressive Agents/administration & dosage/adverse effects/*blood/therapeutic use MH - Male MH - Middle Aged MH - Retrospective Studies MH - Sirolimus/administration & dosage/adverse effects/*blood/therapeutic use MH - Transplantation Conditioning/*methods MH - Transplantation, Homologous MH - Treatment Outcome EDAT- 2012/04/14 06:00 MHDA- 2012/09/18 06:00 CRDT- 2012/04/14 06:00 PHST- 2012/04/14 06:00 [entrez] PHST- 2012/04/14 06:00 [pubmed] PHST- 2012/09/18 06:00 [medline] AID - 10.1002/j.1875-9114.2012.01034.x [doi] PST - ppublish SO - Pharmacotherapy. 2012 May;32(5):441-5. doi: 10.1002/j.1875-9114.2012.01034.x. Epub 2012 Apr 12.