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Roxadustat reduces left ventricular mass index compared to rHuEPO in haemodialysis patients in a randomized controlled trial
Tan, W., Wang, X., Sun, Y., Wang, X., He, J., Zhong, L., Jiang, X., Sun, Y., Tian, E., Li, Z., et al
Journal of internal medicine. 2024
Abstract
BACKGROUND Left ventricular hypertrophy (LVH) is highly prevalent in haemodialysis (HD) patients and is associated with an increased risk of death. Roxadustat and recombinant human erythropoietin (rHuEPO, abbreviated as EPO) are the main treatment strategies for renal anaemia in HD patients, but it has not been clear whether there is a difference in their effect on LVH. METHODS In this multi-centre, prospective, randomized trial of 12-month duration, study participants were randomized in a 1:1 ratio to the roxadustat group or the EPO group. The doses of both treatment regimens were adjusted so that the patients had a haemoglobin level of 10.0-12.0 g per dL. The primary study endpoint was the change from baseline to 12 months in the left ventricular mass index (LVMI, g/m(2) ) measured by echocardiography. RESULTS In total, 114 patients were enrolled. The mean age was 50 years, and the median dialysis duration was 33 months. Sixty-one patients were men, and 24 were diabetic. LVMI decreased from 116.18 ± 27.84 to 110.70 ± 25.74 g/m(2) in the roxadustat group. However, it increased from 109.35 ± 23.41 to 114.99 ± 28.46 g/m(2) in the EPO group, with a significant difference in the change in LVMI between the two groups [-5.48 (-11.60 to 0.65) vs. 5.65 (0.74 to 10.55), p < 0.05]. Changes in left ventricular mass, end-diastolic volume and 6-min walk test seemed superior in the roxadustat group. There were no significant differences in other cardiac geometry, biochemical parameters and major adverse cardiovascular events between the two groups. CONCLUSIONS Compared to EPO, roxadustat is more helpful in the regression of LVH in HD patients.
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Roxadustat and Oral Iron Absorption in Chinese Patients with Anemia of Chronic Kidney Disease: A Randomized, Open-Label, Phase 4 Study (ALTAI)
Wu, H., Cheng, H., Wang, C., Yao, L., Qin, S., Zuo, L., Hu, Z., Zhang, C., Wu, Y., Hofherr, A., et al
Advances in therapy. 2024
Abstract
INTRODUCTION Anemia of chronic kidney disease (CKD) has a high incidence and is associated with many disease conditions. Iron dysmetabolism is an important contributor to anemia in CKD patients. METHODS ALTAI, a randomized, active-controlled, phase 4 trial, investigated the efficacy of roxadustat versus recombinant human erythropoietin (rHuEPO) on gastrointestinal iron absorption in patients with anemia of CKD (stage 4/5). The primary endpoint was change from baseline to day 15 in gastrointestinal iron absorption (serum iron area under the concentration-time curve; AUC(0-3h)) following single-dose oral iron. RESULTS Twenty-five patients with a mean age of 55.1 years were randomized 1:1 to roxadustat (n = 13) or rHuEPO (n = 12). Baseline iron profiles were similar between treatment groups. Change from baseline to day 15 in serum iron AUC(0-3h) was not statistically significantly different between the roxadustat and rHuEPO groups. Mean (SD) change from baseline in serum iron AUC(0-3h) was 11.3 (28.2) g × 3 h/dl in the roxadustat group and - 0.3 (9.7) g × 3 h/dl in the rHuEPO group. Roxadustat treatment was associated with decreased hepcidin and also increased transferrin, soluble transferrin receptor, and total iron-binding capacity (TIBC), with nominal significance. The proportion of patients experiencing one or more adverse events was 38.5% when treated with roxadustat and 16.7% with rHuEPO. CONCLUSIONS The study showed no significant difference between roxadustat and rHuEPO in iron absorption but was underpowered because of recruitment challenges. TRIAL REGISTRATION ClinicalTrials.gov Identifier NCT04655027.
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Predicting response to iron supplementation in patients with active inflammatory bowel disease (PRIme): a randomised trial protocol
Loveikyte, R., Duijvestein, M., Mujagic, Z., Goetgebuer, R. L., Dijkstra, G., van der Meulen-de Jong, A. E.
BMJ open. 2024;14(1):e077511
Abstract
INTRODUCTION Iron deficiency anaemia (IDA) is the most common systemic manifestation of inflammatory bowel disease (IBD) that has detrimental effects on quality of life (QoL) and disease outcomes. Iron deficiency (ID), with or without anaemia, poses a diagnostic and therapeutic challenge in patients with IBD due to the multifactorial nature of ID(A) and its frequent recurrence. Elevated hepcidin-a systemic iron regulator that modulates systemic iron availability and intestinal iron absorption-has been associated with oral iron malabsorption in IBD. Therefore, hepcidin could assist in therapeutic decision-making. In this study, we investigate whether hepcidin can predict response to oral and intravenous iron supplementation in patients with active IBD undergoing anti-inflammatory treatment. METHODS AND ANALYSIS PRIme is an exploratory, multicentre, open-label and randomised trial. All adult patients with active IBD and ID(A) will be assessed for eligibility. The participants (n=90) will be recruited at five academic hospitals within the Netherlands and randomised into three groups (1:1:1): oral ferrous fumarate, oral ferric maltol or intravenous iron. Clinical and biochemical data will be collected at the baseline and after 6, 14 and 24 weeks. Blood samples will be collected to measure hepcidin and other biomarkers related to iron status. In addition, patient-reported outcomes regarding QoL and disease burden will be evaluated. The primary outcome is the utility of hepcidin as a predictive biomarker for response to iron therapy, which will be assessed using receiver operating curve analysis. ETHICS AND DISSEMINATION The study has been approved by the Institutional Review Board at the Leiden University Medical Center (IRB No. P21.109) and other study sites. All participants will provide written informed consent to enrol in the study. The findings will be published in a peer-reviewed journal and disseminated at scientific conferences; the dataset will be available on reasonable request. TRIAL REGISTRATION Prospectively registered in the https://clinicaltrials.gov/ and the Eudra registries. First submitted on 10 May 2022 to the ClinicalTrials.gov (ID: NCT05456932) and on 3 March 2022 to the European Union Drug Regulating Authorities Clinical Trials Database (ID: 2022-000894-16).
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Efficacy and cost-effectiveness of darbepoetin alfa once every 4 weeks versus continuous erythropoietin receptor activator once every 4 weeks for anemia correction in patients with chronic kidney disease not on dialysis
Park, G. N., Lee, K. H., Moon, J. E., Choi, S. J., Park, M. Y., Kim, J. K., Yu, B. C.
Kidney research and clinical practice. 2024
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Editor's Choice
Abstract
BACKGROUND For anemia management in patients with chronic kidney disease not on dialysis, darbepoetin alfa (DA), which has a shorter half-life but is more inexpensive than continuous erythropoietin receptor activator (CERA), is preferred in Korea. This study evaluated the efficacy, safety, and cost-effectiveness of once-in-4-weeks DA compared with once-in-4-weeks CERA in patients with chronic kidney disease not on dialysis. METHODS In this randomized, prospective, non-inferiority study, 40 erythropoiesis-stimulating agent-naïve patients with chronic kidney disease not on dialysis were randomized 1:1 to the DA group and CERA group. They received the study drug once in 4 weeks during 10- or 12-week correction period and 24-week efficacy evaluation period. The primary outcomes were the mean difference in the changes in hemoglobin levels between baseline and efficacy evaluation period and hemoglobin response rates during the correction period. The secondary outcomes included differences in adverse events and costs. RESULTS DA was non-inferior to CERA for anemia correction; the mean difference in the change in hemoglobin levels between the groups was -0.070 g/dL (95% confidence interval, -0.730 to 0.590 g/dL). Hemoglobin response rates were 100% with DA and 94.1% with CERA. Adverse events were comparable. The mean cost of DA was approximately one-third that of CERA (34,100 ± 7,600 Korean won/4 weeks vs. 115,500 ± 23,600 Korean won/4 weeks; p < 0.001). CONCLUSION Once-in-4-weeks DA safely corrects anemia in erythropoiesis-stimulating agent-naïve patients with chronic kidney disease not on dialysis and is more cost-effective than once-in-4-weeks CERA.
PICO Summary
Population
Patients with chronic kidney disease not on dialysis (n= 40).
Intervention
Darbepoetin alfa (DA), (n= 20).
Comparison
Continuous erythropoietin receptor activator (CERA), (n= 20).
Outcome
The patients received the study drug once in 4 weeks during 10- or 12-week correction period and 24-week efficacy evaluation period. The primary outcomes were the mean difference in the changes in haemoglobin levels between baseline and efficacy evaluation period and haemoglobin response rates during the correction period. DA was non-inferior to CERA for anaemia correction; the mean difference in the change in haemoglobin levels between the groups was -0.070 g/dL (95% confidence interval [-0.730, 0.590 g/dL]). Haemoglobin response rates were 100% with DA and 94.1% with CERA. Adverse events were comparable. The mean cost of DA was approximately one-third that of CERA (34,100 ± 7,600 Korean won/4 weeks vs. 115,500 ± 23,600 Korean won/4 weeks).
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The differential effect of modern intravenous iron on fibroblast growth factor 23 and phosphate in non-dialysis dependent CKD - the exploratory randomized controlled double-blind ExplorIRON-CKD study
Kassianides, X., Bhandari, S.
BMC nephrology. 2024;25(1):54
Abstract
BACKGROUND Intravenous iron is commonly used in patients with non-dialysis-dependent chronic kidney disease (CKD). Modern intravenous iron compounds (e.g. ferric derisomaltose (FDI), ferric carboxymaltose (FCM)) are increasingly utilized with similar efficacy. A differential effect in terms of hypophosphatemia has been noted following administration of FCM, which may be related to fibroblast growth factor 23 (FGF23). This study was designed to examine the comparative effects of FDI and FCM on FGF23, phosphate and other markers of bone turnover. METHODS The single-center double-blind randomized controlled trial "Iron and Phosphaturia - ExplorIRON-CKD" primarily assessed the effects of FCM and FDI on intact FGF23 and phosphate, whilst also studying the impact on vitamin D, parathyroid hormone and phosphaturia. Bone markers including alkaline phosphatase, bone-specific alkaline phosphatase, procollagen type 1 N-terminal propeptide and carboxy-terminal collagen cross-linked telopeptide were monitored. Non-dialysis-dependent CKD patients (stage 3a-5) with iron deficiency with/without anemia (serum ferritin < 200 µg/L or transferrin saturation = 20% and serum ferritin 200-299 µg/L) were randomized to receive FDI or FCM in a 1:1 ratio. At baseline 1000 mg of intravenous iron was administered followed by 500-1000 mg at 1 month to achieve replenishment. Measurements were performed at baseline, 1-2 days following iron administration, 2 weeks, 1 month (second iron administration), 1-2 days following second administration, 2 months and 3 months following initial infusion. RESULTS Twenty-six patients participated in the trial; 14 randomized to FDI and 12 to FCM. Intact FGF23 increased following administration of iron, and the increase was significantly higher with FCM compared to FDI (Baseline to 1-2 days following 1st administration: FDI: 3.0 (IQR: - 15.1 - 13.8) % vs. FCM: 146.1 (IQR: 108.1-203.1) %; p < 0.001 and Baseline to 1-2 days following 2nd administration: FDI: 3.2 (IQR: - 3.5 - 25.4) % vs. FCM: 235.1 (138.5-434.6) %; p = 0.001). Phosphate levels decreased in the FCM group, causing a significant difference versus FDI 2 weeks following administration of the first dose. A significantly greater decrease in 1,25 (OH)(2) Vitamin D was noted with FCM. Several markers of bone turnover significantly changed following administration of FCM but not FDI. CONCLUSIONS The study suggests a differential effect on FGF23 following administration of FCM compared to FDI in non-dialysis-dependent CKD patients, similar to other patient groups. This may lead to changes consistent with hypovitaminosis D and alterations in bone turnover with potential clinical consequences. Further definitive studies are required to understand these differences of intravenous iron compounds. TRIAL REGISTRATION European Union Drug Regulating Authorities Clinical Trials Database (EudraCT) number: 2019-004370-26 ( https://www.clinicaltrialsregister.eu/ctr-search/trial/2019-004370-26/GB ) (First date of trial registration: 03/12/2019).
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Esophageal Stent in Acute Refractory Variceal Bleeding: A Systematic Review and a Meta-Analysis
Songtanin, B., Kahathuduwa, C., Nugent, K.
Journal of clinical medicine. 2024;13(2)
Abstract
Background: Acute esophageal variceal bleeding accounts for up to 70% of upper-gastrointestinal bleeding in cirrhotic patients. About 10-20% of patients with acute variceal bleeding have refractory bleeding that is not controlled by medical or endoscopic therapy, and this condition can be life-threatening. Balloon tamponade is a long-standing therapy which is only effective temporarily and has several complications, while transjugular intrahepatic portosystemic shunt (TIPS) and liver transplantation may not be readily available at some centers. The use of self-expandable metal stents (SEMSs) in refractory esophageal variceal bleeding has been studied for effectiveness and adverse events and has been recommended for use as a bridge to a more definitive treatment. Aim: To investigate the effectiveness and safety of SEMSs in managing refractory variceal bleeding. Methods: A systematic search of the MEDLINE, EMBASE, and Cochrane library databases was performed from inception to October 2022 using the following terms: "esophageal stent", "self-expandable metal stents", "endoscopic hemostasis", "refractory esophageal varices", and "esophageal variceal bleeding". Studies were included in the meta-analysis if they met the following criteria: (1) patients' age older than 18 and (2) a study (or case series) that has at least 10 patients in the study. Exclusion criteria included (1) non-English publications, (2) in case of overlapping cohorts, data from the most recent and/or most appropriate comprehensive report were collected. DerSimonian-Laird random-effects meta-analysis was performed using the meta package in R statistical software(version 4.2.2). Results: Twelve studies involving 225 patients with 228 stents were included in the analyses. The mean age and/or median age ranged from 49.4 to 69 years, with a male-to-female ratio of 4.4 to 1. The median follow-up period was 42 days. The mean SEMS dwell time was 9.4 days. The most common cause of acute refractory variceal bleeding in chronic liver disease patients included alcohol use followed by viral hepatitis. The pooled rate of immediate bleeding control was 91% (95% CI 82-95%, I(2) = 0). The pooled rate of rebleeding was 17% (95% CI 8-32%, I(2) = 69). The pooled rate of stent ulceration was 7% (95% CI 3-13%, I(2) = 0), and the pooled rate of stent migration was 18% (95% CI 9-32%, I(2) = 38). The pooled rate of all-cause mortality was 38% (95% CI 30-47%, I(2) = 34). Conclusions: SEMSs should be primarily considered as salvage therapy when endoscopic band ligation and sclerotherapy fail and can be used as a bridge to emergent TIPS or definitive therapy, such as liver transplantation.
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Impact of C-reactive protein on the effect of Roxadustat for the treatment of anemia in chronic kidney disease: a systematic review of randomized controlled trials
Luo, X., Li, G., Yang, H., Chen, L., Gao, Y., Cong, J., Luo, H., Zhang, W.
BMC nephrology. 2024;25(1):47
Abstract
BACKGROUND Chronic inflammation, reflected by an increased blood C-reactive protein (CRP) level, is common in patients with chronic kidney disease (CKD) and is involved in the development of renal anemia. This systematic review aims to investigate the impacts of CRP on the efficacy of hypoxia-inducible factor-prolyl hydroxylase inhibitors (HIF-PHIs) in the treatment of renal anemia in patients with CKD. METHODS We conducted a comprehensive search of electronic databases including Pubmed, Web of Science, Embase, Cochrane Library, CNKI, Wanfang, and the International Clinical Trials Registry Platform (ICTRP), from their inception to May 19, 2022. We systematically reviewed evidence from randomized controlled trials using HIF-PHIs for renal anemia treatment. The mean difference (MD) in changes in hemoglobin concentration (∆Hb) before and after treatment served as the meta-analysis outcome, utilizing a random-effects model. We compared groups with CRP levels greater than or equal to the upper limit of normal (ULN) and less than the ULN. Additionally, further analysis was conducted in the CRP ≥ ULN group comparing HIF-PHIs and erythropoiesis-stimulating agents (ESA). RESULTS A total of 7 studies from 6 publications were included in the analysis. In the comparison between the CRP ≥ ULN group and the CRP < ULN group, 524 patients from 4 studies were incorporated into the analysis. All patients received roxadustat as the primary intervention. The pooled results revealed no significant difference in ΔHb between patients with CRP ≥ ULN and CRP < ULN at baseline (Mean Difference: 0.00, 95% Confidence Interval: -0.32 to 0.33, P = 0.99). Moreover, within the CRP ≥ ULN group, three studies involving 1399 patients compared the efficacy of roxadustat and erythropoiesis-stimulating agents (ESAs). The results indicated no significant difference in ΔHb between patients treated with ESAs and HIF-PHIs (Mean Difference: 0.24, 95% Confidence Interval: -0.08 to 0.56, P = 0.14). In terms of medication dosage, an increase in ESA dose over time was observed across various studies, particularly evident in the CRP ≥ ULN group, while the dose of roxadustat remains constant over time and is not influenced by the baseline levels of CRP. CONCLUSIONS Our systematic review demonstrates that roxadustat exhibits similar efficacy across different CRP levels. Moreover, within the CRP ≥ ULN group, roxadustat can maintain efficacy comparable to ESA without the necessity for dose escalation. TRIAL REGISTRATION CRD42023396704.
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Kidney disease in trials of perioperative tranexamic acid
Liu, C. W., Anih, J., Lebedeva, V., Gungor, A., Wang, C., Park, L., Roshanov, P. S.
Journal of clinical anesthesia. 2024;94:111417
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Editor's Choice
Abstract
STUDY OBJECTIVE To assess how kidney disease is handled in randomized trials evaluating the safety and efficacy of perioperative tranexamic acid, and to evaluate its effects across levels of kidney function. DESIGN Systematic review and meta-analysis of randomized controlled trials. SETTING We screened studies from a previous comprehensive systematic review, and updated its search of PubMed, Embase, and Cochrane CENTRAL to July 31, 2023. PATIENTS Patients undergoing non-obstetric surgery. INTERVENTIONS Intravenous tranexamic acid compared to placebo or usual care without tranexamic acid. MEASUREMENT We summarized the handling of kidney disease in eligibility criteria, dose adjustments for kidney function, and effects of tranexamic acid on thrombotic events, seizures, and bleeding by subgroups of kidney function. MAIN RESULTS We evaluated 300 trials with 53,085 participants; 45,958 participants (86.6%) were enrolled in 228 trials (76.0%) that explicitly excluded patients with kidney disease. Definitions of kidney diseased used for exclusion varied widely. Most were non-specific and some corresponded to mild disease. Only 5 trials adjusted dosing for kidney function. Meta-analysis of two large trials found tranexamic acid unlikely to substantially increase or decrease the occurrence of thrombotic events in patients with eGFR <60 mL/min/1.73m(2) (RR, 0.95; 95% CI: 0.83 to 1.07) or ≥ 60 mL/min/1.73m(2) (RR, 1.00; 95% CI, 0.91 to 1.11; P for subgroup difference = 0.47), but both trials excluded patients with severe kidney disease. No analysis could be performed regarding seizure risk. One large trial in noncardiac surgery reported similar reduction in bleeding across subgroups of kidney function but excluded patients with creatinine clearance <30 mL/min. CONCLUSIONS The large evidence base supporting perioperative tranexamic acid suffers from broad and unjustified exclusion of patients with kidney disease. Typical perioperative dosing of tranexamic acid is likely safe and effective in patients with creatinine clearance >30 mL/min, but effects in more severe kidney disease are unknown.
PICO Summary
Population
Patients undergoing non-obstetric surgery (300 trials, n= 53,085).
Intervention
Intravenous tranexamic acid.
Comparison
Placebo or usual care without tranexamic acid.
Outcome
From all the included studies, 45,958 participants (86.6%) were enrolled in 228 trials (76.0%) that explicitly excluded patients with kidney disease. Definitions of kidney diseased used for exclusion varied widely. Most were non-specific and some corresponded to mild disease. Only 5 trials adjusted dosing for kidney function. Meta-analysis of two large trials found tranexamic acid unlikely to substantially increase or decrease the occurrence of thrombotic events in patients with estimated glomerular filtration rate <60 mL/min/1.73m(2) (RR 0.95; 95% CI [0.83, 1.07]) or ≥ 60 mL/min/1.73m(2) (RR 1.00; 95% CI [0.91, 1.11], but both trials excluded patients with severe kidney disease. No analysis could be performed regarding seizure risk. One large trial in non-cardiac surgery reported similar reduction in bleeding across subgroups of kidney function but excluded patients with creatinine clearance <30 mL/min.
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Tranexamic acid for gastrointestinal bleeding: can a reduction in the risk of death be discounted? A systematic review and meta-analysis of individual patient data from 64 724 bleeding patients
Ker, K., Mansukhani, R., Shakur-Still, H., Arribas, M., Beaumont, D., Roberts, I.
BMJ open. 2023;13(2):e059982
Abstract
OBJECTIVES HALT-IT was an international, randomised trial which assessed the effects of tranexamic acid (TXA) in 12 009 patients with gastrointestinal (GI) bleeding. The results found no evidence that TXA reduces death. It is widely accepted that results of trials should be interpreted in the context of other relevant evidence. We conducted a systematic review and individual patient data (IPD) meta-analysis to assess if the results of HALT-IT are compatible with evidence for TXA in other bleeding conditions. DESIGN Systematic review and IPD meta-analysis of randomised trials involving ≥5000 patients assessing TXA for bleeding. We searched our Antifibrinolytics Trials Register on 1 November 2022. Two authors extracted data and assessed risk of bias. DATA SYNTHESIS We used a one-stage model to analyse IPD in a regression model stratified by trial. We assessed heterogeneity of the effect of TXA on death within 24 hours and vascular occlusive events (VOEs). RESULTS We included IPD for 64 724 patients from four trials involving patients with traumatic, obstetric and GI bleeding. Risk of bias was low. There was no evidence for heterogeneity between trials for the effect of TXA on death or for the effect of TXA on VOEs. TXA reduced the odds of death by 16% (OR=0.84, 95% CI: 0.78 to 0.91, p<0.0001; p-heterogeneity=0.40). In patients treated within 3 hours of bleeding onset, TXA reduced the odds of death by 20% (0.80, 0.73 to 0.88, p<0.0001; p-heterogeneity=0.16). TXA did not increase the odds of VOEs (0.94, 0.81 to 1.08, p for effect=0.36; p-heterogeneity=0.27). CONCLUSIONS There is no evidence for statistical heterogeneity between trials assessing the effect of TXA on death or VOEs in different bleeding conditions. When the HALT-IT results are considered in the context of other evidence, a reduction in the risk of death cannot be discounted. TRIAL REGISTRATION NUMBER PROSPERO CRD42019128260.Cite Now.
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Investigating the relationship between erythropoiesis-stimulating agents and mortality in hemodialysis patients: A systematic review and meta-analysis
Karimi, Z., Raeisi Shahraki, H., Mohammadian-Hafshejani, A.
PloS one. 2023;18(11):e0293980
Abstract
BACKGROUND In recent years, various studies have been conducted to investigate the relationship between erythropoiesis-stimulating agents (ESAs) and mortality in hemodialysis patients, who showed contradictory results. Therefore, this study aimed to investigate the relationship between ESAs and mortality in hemodialysis patients. METHODS The current study is a systematic review and meta-analysis based on observational and interventional studies published in the Web of Science, Cochrane Library, Science Direct, PubMed, Scopus, and Google Scholar databases between 1980 and the end of 2022. Jadad scale checklist and Newcastle Ottawa scale were used to evaluate the quality of articles. The study data were analyzed using Stata 15 software. RESULTS In the initial search, 3933 articles were extracted, and by screening and considering the research criteria, 68 studies were finally included in the meta-analysis. According to the meta-analysis results, the risk ratio (RR) of overall mortality in hemodialysis patients receiving ESAs was equal to 1.19 (95% CI: 1.16-1.23, P ≤ 0.001). The RR of mortality in patients aged 60 years and under was equal to 1.33 (1.15-1.55, P ≤ 0.001), in the age group over 60 years was equal to 1.13 (1.10-1.16, P ≤ 0.001), in randomized clinical trial studies was equal to 1.06 (0.80-1.40, P = 0.701), in cohort studies was equal to 1.20 (1.16-1.25, P ≤ 0.001), in American countries was equal to 1.19 (1.10-1.29, P ≤ 0.001), in Asian countries was equal to 1.15 (1.10-1.19, P ≤ 0.001), and in European countries was equal to 1.18 (1.05-1.34, P = 0.007). CONCLUSION The results of the study show that receiving ESAs is associated with a 19% increase in the risk of overall mortality in hemodialysis patients.