Use this URL to cite or link to this record in EThOS:
Title: Pentoxifylline in anaemia resistant to erythropoietin (PEAR) study : a double blind placebo controlled randomised trial
Author: Kaushik, Tarun
ISNI:       0000 0004 8503 8891
Awarding Body: Queen Mary University of London
Current Institution: Queen Mary, University of London
Date of Award: 2019
Availability of Full Text:
Access from EThOS:
Access from Institution:
Background Hyporesponsiveness to erythropoiesis-stimulating agents (ESA) and its association with adverse cardiovascular outcomes remains a considerable problem in patients with end-stage renal disease (ESRD) undergoing haemodialysis. Pentoxifylline has been shown to have some beneficial effect on ESA Hyporesponsiveness by reducing inflammation in ESRD patients. Methods We conducted a single centre, double-blind, placebo-controlled randomised trial to study the effect of Pentoxifylline on Erythropoietin stimulating agent (ESA) requirement of stable haemodialysis patients. Inclusion criteria were equivalent ESA dose of greater than or equal to 6000 International Units (I.U) per week or ESA resistance index greater than or equal to 6.5 I.U /kg/wk/Hb (g/dl) and stable Hb between 9 to 12 g/dl. The primary study endpoint was ESA requirement relative to Haemoglobin (Hb) level at the end of study period of 6 months. Secondary endpoints included safety analysis, Hb values, ESA dose and cardiovascular imaging biomarkers such as vascular PET CT and cardiac MRI scan. Cytokine profile was also analysed during the study. Results A total of 69 patients underwent randomisation. At the end of the study period, there was no statistically significant (p value= 0.26) difference in ESA /Hb ratio between pentoxifylline and placebo group (Mean (SD) 3.98 mcg/gm/dl (3.09) versus 4.91 mcg/gm/dl (3.49) respectively). The secondary outcomes did not show any statistically significant change between pentoxifylline and placebo group. There were no concerns regarding the safety of pentoxifylline in haemodialysis patients. The cytokine profile showed a reduction in inflammatory cytokines titres and rise in anti-inflammatory cytokines in the entoxifylline group analysed as slopes of cytokine variability longitudinally. Conclusions Pentoxifylline did not improve the ESA requirement in ESA hyporesponsive, stable haemodialysis patients over six months period. There was no statistically significant change in cardiovascular imaging biomarkers between Pentoxifylline and placebo group. Cytokine profile showed a favourable response to Pentoxifylline therapy.
Supervisor: Not available Sponsor: National Institute of Health Research
Qualification Name: Thesis (M.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Translational Medicine and Therapeutics ; Pentoxifylline ; erythropoiesis-stimulating agents ; end-stage renal disease ; Nephrology