Lack of progressive hepatic fibrosis during long-term therapy with deferiprone in subjects with transfusion-dependent beta-thalassemia.
Patients with thalassemia major require lifelong chelation therapy to prevent iron-induced organ damage. The orally active chelator deferiprone has been proposed as an alternative for patients unable or unwilling to use deferoxamine. One report has concluded that deferiprone may worsen hepatic fibrosis in patients with thalassemia, whereas others have found no detrimental effect. A panel of 3 pathologists evaluated 112 coded liver biopsies obtained from 56 patients before and after deferiprone therapy. Fibrosis was scored with the Laennec and Ishak systems. The mean interval between liver biopsies was 3.1 years (range, 1.2-4.9 years). In 11 patients seronegative for hepatitis C, fibrosis scores before and after therapy were 1.12 +/- 1.07 and 0.97 +/- 0.84 (P =.42) with the use of the Ishak system, and 0.71 +/- 0.65 and 0.70 +/- 0.53 (P =.91) with the Laennec system. Among 45 patients seropositive for hepatitis C, fibrosis scores before and after therapy were 1.91 +/- 1.13 and 2.04 +/- 1.30 (P =.43) with the use of the Ishak system and 1.26 +/- 0.73 and 1.35 +/- 0.90 (P =.41) with the Laennec system. When the data set was limited to biopsies that each contained 6 or more portal tracts (31 patients), analysis still showed no significant change in fibrosis with time. With the use of the Laennec system, the fibrosis score did not increase by more than one level in any patients without hepatitis C; it increased by more than one level in 1 patient with hepatitis C; and it did not decrease by more than one level in any of the 56 patients. This analysis of the largest collection of liver biopsies reported to date in patients receiving deferiprone demonstrates no evidence of deferiprone-induced progression of hepatic fibrosis during long-term therapy.
Wanless
Ian R
IR
Department of Laboratory Medicine and Pathobiology, Toronto General Hospital and University of Toronto, ON, Canada. ian.wanless@utoronto.ca
Sweeney
George
G
Dhillon
Amar P
AP
Guido
Maria
M
Piga
Antonio
A
Galanello
Renzo
R
Gamberini
M Rita
MR
Schwartz
Elias
E
Cohen
Alan R
AR
D000293:Adolescent; D000328:Adult; D001706:Biopsy; D001803:Blood Transfusion; D002648:Child; D000077543:Deferiprone; D005260:Female; D006801:Humans; D007502:Iron Chelating Agents / Q000008:administration & dosage* / Q000009:adverse effects; D008103:Liver Cirrhosis / Q000150:complications* / Q000473:pathology / Q000503:physiopathology*; D008297:Male; D011728:Pyridones / Q000008:administration & dosage* / Q000009:adverse effects; D013997:Time Factors; D017086:beta-Thalassemia / Q000150:complications* / Q000503:physiopathology / Q000628:therapy*
D007502:Iron Chelating Agents; D011728:Pyridones; D000077543:Deferiprone