Role of plasminogen activator inhibitor-1 (PAI-1) levels in the diagnosis of BMT-associated hepatic veno-occlusive disease and monitoring of subsequent therapy with defibrotide (DF).
Eaton, J D
Scarffe, J Howard
AffiliationDepartments of Medical Oncology and Haematology, Christie Hospital, Wilmslow Rd, Manchester, UK.
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AbstractHepatic veno-occlusive disease (VOD) is a common and potentially fatal complication of high dose chemotherapy with allogeneic/autologous stem cell transplant (SCT). The diagnosis and treatment of hepatic VOD is controversial. Clinical features are non-specific and may be mimicked by a number of other conditions causing hyperbilirubinaemia post-transplantation. Plasminogen activator inhibitor-1 (PAI-1) has been proposed as a specific marker of VOD . Defibrotide (DF) is a polydeoxyribonucleotide, which has been found to have anti-thrombotic, anti-ischaemic and thrombolytic properties without causing significant anti-coagulation. Recent evidence [2,3] suggests that use of DF in patients with severe VOD results in a promising response rate without attributable significant toxicity. Between January 1998 and July 1999, PAI-1 levels were measured serially in 16 patients undergoing SCT who had subsequently developed hyperbilirubinaemia. Diagnosis of VOD was made by established clinical criteria [4,5]. At the time of diagnosis, PAI-1 levels (mean+/-SD) were significantly elevated in patients with VOD (90.7+/-47 ng/ml, n=7) when compared with patients with jaundice from other causes post transplantation (12.1+/-6.4 ng/ml, n=9). Five of the patients with VOD received treatment with DF. Four out of five patients showed an initial response to DF (significant fall in bilirubin and improvement in other signs/symptoms) with one of these patients having a complete response (bilirubin < 2.0 mg/dl and full resolution of signs/symptoms and end-organ toxicity). Following treatment with DF, a corresponding fall in PAI-1 levels was noted in those responding, with non-responders maintaining raised levels. Conclusion: Raised PAI-1 levels post stem cell transplant are specific for VOD and a subsequent decrease in levels following treatment with DF may be associated with response to treatment.
CitationRole of plasminogen activator inhibitor-1 (PAI-1) levels in the diagnosis of BMT-associated hepatic veno-occlusive disease and monitoring of subsequent therapy with defibrotide (DF). 2003, 8 (2):91-5 Hematology
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