Addition of intravenous iron to epoetin beta increases hemoglobin response and decreases epoetin dose requirement in anemic patients with lymphoproliferative malignancies: a randomized multicenter study

Iron deficiency in patients with solid tumours: prevalence and management in clinical practice

PURPOSE

The objective of the present study was to describe the prevalence and management of anaemia and iron deficiency (ID) in treatment-naïve patients with solid tumours in Spain and the incidence of anaemia over 4 months of cancer treatment in clinical practice.

METHODS

Multicentre, prospective and observational study in newly diagnosed cancer patients. Data on anaemia and iron parameters and its management were collected prior to the initiation of chemotherapy, at each cycle of chemotherapy and after 4 months of treatment. The main outcomes of the study were the prevalence of anaemia at baseline, its incidence during cancer treatment and the prevalence of absolute ID (AID) and functional ID (FID) prior to chemotherapy initiation.

RESULTS

A total of 295 patients were included in the study. Anaemia was present at diagnosis in 38.6 % of patients and was treated only in 32.5 % of those. A total of 106 patients (60.2 %) without anaemia at baseline developed anaemia during cancer treatment. Serum ferritin and transferrin saturation data were available for 151 of the patients (51.2 %) included in the study. The overall prevalence of ID was 59 %: 48 patients (31.8 %) presented with AID and 41 patients (27.2 %) presented with FID before starting anti-cancer therapy. Thirty-three of 44 non-anaemic iron-deficient patients did not receive any type of iron supplementation before initiating cancer therapy.

CONCLUSIONS

Iron parameters are not commonly measured in newly diagnosed cancer patients. A correct evaluation and early management of ID could reduce the incidence of treatment-related anaemia in cancer patients.

Anemia of chronic disease: a unique defect of iron recycling for many different chronic diseases

Anemia of chronic disease (ACD) is frequently observed in patients with chronic diseases as a significant contributor to morbidity and mortality, which can aggravate the severity of symptoms of the underlying inflammatory status. The pathophysiology of ACD is multifactorial, including three mechanisms: shortened erythrocyte survival, impaired proliferation of erythroid progenitor cells, and abnormalities of iron metabolism. These mechanisms are "immune and inflammation"-driven, but several other factors, including chronic blood loss, hemolysis, or vitamin deficiencies, can aggravate anemia. All the abnormalities of iron metabolism observed in ACD can be explained by the effect of hepcidin upregulation. Hepcidin is a small liver peptide, that inhibits the cellular macrophage efflux of iron and intestinal iron absorption, binding to ferroportin and inducing its internalization and degradation. In ACD the synthesis of hepcidin is upregulated by increased inflammatory cytokines, causing the two main principal features: the macrophage iron sequestration and the iron-restricted erythropoiesis. ACD is the most complex anemia to treat. The recommended approach is the treatment of the underlying disease, which can lead to a major improvement or even resolution of ACD. Currently available treatments (transfusion, iron, and erythropoiesis-stimulating agents) can ameliorate anemia, but a considerable percentage of non-responders exist. On this evidence new treatment strategies might arise from the knowledge of the pathophysiology of ACD, in which hepcidin plays the central role. Prospective studies are needed to evaluate the safety and the efficacy of the new emerging treatments, which modulate hepcidin expression through different mechanisms.

Darbepoetin-alfa and intravenous iron administration after autologous hematopoietic stem cell transplantation: a prospective multicenter randomized trial

We conducted a randomized study analyzing the impact of darbepoetin alfa (DA) administration with or without intravenous (i.v.) iron on erythroid recovery after autologous hematopoietic cell transplantation (HCT). Patients were randomized between no DA (Arm 1), DA 300 μg every 2 weeks starting on Day 28 after HCT (Arm 2), or DA plus i.v. iron 200 mg on Days 28, 42, and 56 (Arm 3). The proportion achieving complete hemoglobin (Hb) response within 18 weeks (primary end point) was 21% in Arm 1 (n = 24), 79% in Arm 2 (n = 25), and 100% in Arm 3 (n = 23; P < 0.0001). Erythropoietic response was shown to be significantly higher in Arm 3 (n = 46) than in Arm 2 (n = 50; P = 0.008), resulting in lower DA use, reduced drug costs, and improved quality of life scores, but the effect on transfusions was not significant. In multivariate analysis, DA administration (P < 0.0001), i.v. iron administration (P = 0.0010), high baseline Hb (P < 0.0001), and low baseline creatinine (P = 0.0458) were independently associated with faster achievement of complete Hb response. In conclusion, DA is highly effective to ensure full erythroid reconstitution after autologous HCT when started on Day 28 post-transplant. I.v. iron sucrose further improves erythroid recovery.

Epidemiological and nonclinical studies investigating effects of iron in carcinogenesis--a critical review

The efficacy and tolerability of intravenous (i.v.) iron in managing cancer-related anemia and iron deficiency has been clinically evaluated and reviewed recently. However, long-term data in cancer patients are not available; yet, long-term i.v. iron treatment in hemodialysis patients is not associated with increased cancer risk. This review summarizes epidemiological and nonclinical data on the role of iron in carcinogenesis. In humans, epidemiological data suggest correlations between certain cancers and increased iron exposure or iron overload. Nonclinical models that investigated whether iron can enhance carcinogenesis provide only limited evidence relevant for cancer patients since they were typically based on high iron doses as well as injection routes and iron formulations which are not used in the clinical setting. Nevertheless, in the absence of long-term outcome data from prospectively defined trials in i.v. iron-treated cancer patients, iron supplementation should be limited to periods of concomitant anti-tumor treatment.

Intravenous iron monotherapy for the treatment of non-iron-deficiency anemia in cancer patients undergoing chemotherapy: a pilot study

Background

Anemia in patients with cancer who are undergoing active therapy is commonly encountered and may worsen quality of life in these patients. The effect of blood transfusion is often temporary and may be associated with serious adverse events. Erythropoiesis-stimulating agents are not effective in 30%–50% of patients and may have a negative effect on overall survival.

Aims

To assess the efficacy and feasibility of intravenous iron therapy in patients with cancer who have non-iron-deficiency anemia and who are undergoing treatment with chemotherapy without the use of erythropoiesis-stimulating agents.

Methods

Adult patients with solid cancers and non-iron-deficiency anemia were included. Ferric sucrose at a dose of 200 mg was given in short intravenous infusions weekly for a total of 12 weeks. Hemoglobin level was measured at baseline, every 3 weeks, and 2 weeks after the last iron infusion (week 14). Adverse events related to intravenous iron were prospectively reported.

Results

Of 25 patients included, 19 (76.0%) completed at least three iron infusions and 14 (56.0%) finished the planned 12 weeks of therapy. The mean hemoglobin level of the 25 patients at baseline was 9.6 g/dL (median, 9.9 g/dL; range, 6.9 g/dL 10.9 g/dL). The mean change in hemoglobin level for the 15 patients who completed at least 9 treatments was 1.7 g/dL (median, 1.1 g/dL; range, −1.9 g/dL to 3.2 g/dL); it reached 2.1 g/dL (median, 1.3 g/dL; range, −0.2 g/dL to 4.6 g/dL; P = 0.0007) for the 14 patients who completed all 12 weekly treatments. Five (20.0%) patients were transfused and considered as treatment failures. No treatment-related adverse events were reported.

Conclusion

Intravenous iron treatment alone is safe and may reduce blood transfusion requirements and improve hemoglobin level in patients with cancer who are undergoing anticancer therapy. Further randomized studies are needed to confirm these findings.

Safety and efficacy of intravenous iron therapy in reducing requirement for allogeneic blood transfusion: systematic review and meta-analysis of randomised clinical trials

OBJECTIVES

To evaluate the efficacy and safety of intravenous iron, focusing primarily on its effects on haemoglobin, requirement for transfusion, and risk of infection.

DESIGN

Systematic review and meta-analysis of randomised controlled trials investigating the safety and efficacy of intravenous iron therapy.

DATA SOURCES

Randomised controlled trials from Medline, Embase, and the Cochrane Central Register of Controlled Trials from 1966 to June 2013, with no language restrictions.

ELIGIBILITY CRITERIA FOR SELECTING STUDIES

Eligible trials were randomised controlled trials of intravenous iron compared with either no iron or oral iron. Crossover and observational studies were excluded.

MAIN OUTCOME MEASURES

Change in haemoglobin concentration and risk of allogeneic red blood cell transfusion (efficacy) and risk of infection (safety).

RESULTS

Of the 75 trials meeting the inclusion criteria, 72 studies including 10 605 patients provided quantitative outcome data for meta-analysis. Intravenous iron was associated with an increase in haemoglobin concentration (standardised mean difference 6.5 g/L, 95% confidence interval 5.1 g/L to 7.9 g/L) and a reduced risk of requirement for red blood cell transfusion (risk ratio 0.74, 95% confidence interval 0.62 to 0.88), especially when intravenous iron was used with erythroid stimulating agents (ESAs) or in patients with a lower baseline plasma ferritin concentration. There were no significant interactions between the efficacy of intravenous iron and type or dose administered. Intravenous iron was, however, associated with a significant increase in risk of infection (relative risk 1.33, 95% confidence interval 1.10 to 1.64) compared with oral or no iron supplementation. The results remained similar when only high quality trials were analysed.

CONCLUSIONS

Intravenous iron therapy is effective in increasing haemoglobin concentration and reducing the risk of allogeneic red blood cell transfusion and could have broad applicability to a range of acute care settings. This potential benefit is counterbalanced by a potential increased risk of infection.

Chemotherapy-induced anemia: the story of darbepoetin alfa

BACKGROUND

Prior to the approval of the first erythropoiesis-stimulating agent (ESA) in the early 1990s, red blood cell transfusions were the primary means of treating severe chemotherapy-induced anemia (CIA), with little recourse for those with more mild forms of the condition. The introduction of the ESAs allowed treatment of mild-to-moderate CIA in patients with cancer. It has been a decade since darbepoetin alfa (DA), a second-generation ESA with a longer half-life, became available to patients with CIA.

OBJECTIVE AND METHODS

We present a review of studies on DA in CIA, from its development through to the present day. Medline was searched for randomized clinical trials on DA. Additional trials and meta-analyses on ESAs were incorporated into this review when relevant.

RESULTS

The first publications on DA generally focused on optimal dosing, efficacy and tolerability. In these, it was shown that DA is an effective and well tolerated treatment option to achieve hematopoietic response, regardless of dosing interval. Subsequently, the focus shifted towards meta-analyses on survival data of all ESAs. These reported conflicting results regarding mortality and/or disease progression. However, guidelines for ESA use were updated and, when followed, these make ESAs a well tolerated and effective tool for managing CIA.

CONCLUSIONS

As the past decade has broadened our knowledge on the benefits and risks of CIA management, continued high-quality studies will help to optimize treatment with ESAs in order to maximize quality of life for these patients. The limitation of a literature review of this nature is the complete reliance on previously published research and the availability of these studies using the methodology outlined above.

Patients with Waldenström macroglobulinemia commonly present with iron deficiency and those with severely depressed transferrin saturation levels show response to parenteral iron administration

Anemia often prompts therapy in Waldenström macroglobulinemia (WM), although is not fully explained by bone marrow disease involvement in many patients. Hepcidin regulates gut absorption and distribution of iron and is elevated and associated with anemia in WM. Since hepcidin evaluation remains experimental, we initiated an American Board of Internal Medicine (ABIM) practice improvement project to determine baseline transferrin saturation (TSAT) levels in untreated anemic patients with WM. Among 108 patients with WM evaluated, 56 (52%) had a TSAT level ≤ 20%, which included 25 (23%) patients with severely depressed TSAT levels (≤ 10%). Sixteen patients with TSAT levels ≤ 10% received parenteral iron, and 14 of these patients showed improved hematocrit values (28.75% to 32.75%; P < .0001), mean corpuscular volume (MCV) (84.7 to 89.9; P = .006), and TSAT levels (8.1% to 21.2%; P < .0001). Anemia in 8 of these patients was previously refractory to oral iron therapy. Routine screening of iron saturation levels may therefore identify patients with WM and severe iron deficiency who may be candidates for parenteral iron therapy.

[The 2013 Seville Consensus Document on alternatives to allogenic blood transfusion. An update on the Seville Document]

Since allogeneic blood transfusion (ABT) is not harmless, multiple alternatives to ABT (AABT) have emerged, though there is great variability in their indications and appropriate use. This variability results from the interaction of a number of factors, including the specialty of the physician, knowledge and preferences, the degree of anemia, transfusion policy, and AABT availability. Since AABTs are not harmless and may not meet cost-effectiveness criteria, such variability is unacceptable. The Spanish Societies of Anesthesiology (SEDAR), Hematology and Hemotherapy (SEHH), Hospital Pharmacy (SEFH), Critical Care Medicine (SEMICYUC), Thrombosis and Hemostasis (SETH) and Blood Transfusion (SETS) have developed a Consensus Document for the proper use of AABTs. A panel of experts convened by these 6 Societies have conducted a systematic review of the medical literature and have developed the 2013 Seville Consensus Document on Alternatives to Allogeneic Blood Transfusion, which only considers those AABT aimed at decreasing the transfusion of packed red cells. AABTs are defined as any pharmacological or non-pharmacological measure aimed at decreasing the transfusion of red blood cell concentrates, while preserving patient safety. For each AABT, the main question formulated, positively or negatively, is: « Does this particular AABT reduce the transfusion rate or not?» All the recommendations on the use of AABTs were formulated according to the Grades of Recommendation Assessment, Development and Evaluation (GRADE) methodology.

Anemia treatment of lymphoproliferative malignancies with erypoiesis: an overview of state of the art

Anemia is a common comorbidity of lymphoproliferative malignancies, especially in multiple myeloma. Blood transfusions and ESAs (erythropoiesis stimulating agents) are both possible treatment options, but the latter is often preferred because of the potential risks of unwanted side effects related to blood transfusions. Evidence is accumulating that the use of ESAs in above clinical conditions is safe and effective and not associated with an increase in mortality or serious adverse events. 69.1% of patients achieved a hemoglobin response defined as an increase in hemoglobin of>2g/dl while receiving ESAs and concomitant chemotherapy. If supplemented with iron the hemoglobin response rate can be increased and hence the total dosage and financial cost reduced. A hemoglobin response is often accompanied by an increase in quality of life. HYPO% (hypochromic erythrocytes<5%) is believed to be both a significant positive predictor for the Hb response and also an indicator for iron supplementation if⩾5%. Conventional biochemical markers like serum ferritin concentration and transferrin saturation are not reliable for this use. The effect of EPO stimulating agents as the predictor of the Hb response, quality of life, mortality and the potential adverse events are discussed.

[The 2013 Seville Consensus Document on alternatives to allogenic blood transfusion. An update on the Seville Document]

Since allogeneic blood transfusion (ABT) is not harmless, multiple alternatives to ABT (AABT) have emerged, though there is great variability in their indications and appropriate use. This variability results from the interaction of a number of factors, including the specialty of the physician, knowledge and preferences, the degree of anemia, transfusion policy, and AABT availability. Since AABTs are not harmless and may not meet cost-effectiveness criteria, such variability is unacceptable. The Spanish Societies of Anesthesiology (SEDAR), Hematology and Hemotherapy (SEHH), Hospital Pharmacy (SEFH), Critical Care Medicine (SEMICYUC), Thrombosis and Hemostasis (SETH) and Blood Transfusion (SETS) have developed a Consensus Document for the proper use of AABTs. A panel of experts convened by these 6 Societies have conducted a systematic review of the medical literature and have developed the 2013 Seville Consensus Document on Alternatives to Allogeneic Blood Transfusion, which only considers those AABT aimed at decreasing the transfusion of packed red cells. AABTs are defined as any pharmacological or non-pharmacological measure aimed at decreasing the transfusion of red blood cell concentrates, while preserving patient safety. For each AABT, the main question formulated, positively or negatively, is: "Does this particular AABT reduce the transfusion rate or not?" All the recommendations on the use of AABTs were formulated according to the Grades of Recommendation Assessment, Development and Evaluation (GRADE) methodology.

Intravenous iron supplementation for the treatment of chemotherapy-induced anaemia - systematic review and meta-analysis of randomised controlled trials

BACKGROUND

Current guidelines are inconclusive regarding intravenous (IV) iron for treatment of chemotherapy-induced anaemia (CIA).

MATERIAL AND METHODS

Systematic review and meta-analysis of randomised controlled trials comparing IV iron with no iron or oral iron for treatment of chemotherapy induced anaemia (CIA).

PRIMARY OUTCOMES

haematopoietic response and red blood cell (RBC) transfusion requirements. For dichotomous data, relative risks (RR) with 95% confidence intervals (CIs) were estimated and pooled. For continuous data, weighted mean differences were calculated.

RESULTS

Eleven trials included 1681 patients, the majority examining the addition of IV iron to erythropoiesis stimulating agents (ESA) (1562 patients, 92.9%). IV iron significantly increased haematopoietic response rate [RR 1.28 (95% CI 1.125-1.45), seven trials with ESA] and decreased the rate of blood transfusions both in trials with ESA [RR 0.76 (95% CI 0.61-0.95), seven trials] and without ESA [RR 0.52 (95% CI 0.34-0.80)]. The increase in haematopoietic response rate correlated with total IV iron dose, regardless of baseline iron status. Mortality and safety profile was comparable between groups.

CONCLUSIONS

IV iron added to ESA results in an increase in haematopoietic response and reduction in the need for RBC transfusions, with no difference in mortality or adverse events.

Current status of pharmacologic therapies in patient blood management

Patient blood management(1,2) incorporates patient-centered, evidence-based medical and surgical approaches to improve patient outcomes by relying on the patient's own (autologous) blood rather than allogeneic blood. Particular attention is paid to preemptive measures such as anemia management. The emphasis on the approaches being "patient-centered" is to distinguish them from previous approaches in transfusion medicine, which have been "product-centered" and focused on blood risks, costs, and inventory concerns rather than on patient outcomes. Patient blood management(3) structures its goals by avoiding blood transfusion(4) with effective use of alternatives to allogeneic blood transfusion.(5) These alternatives include autologous blood procurement, preoperative autologous blood donation, acute normovolemic hemodilution, and intra/postoperative red blood cell (RBC) salvage and reinfusion. Reviewed here are the available pharmacologic tools for anemia and blood management: erythropoiesis-stimulating agents (ESAs), iron therapy, hemostatic agents, and potentially, artificial oxygen carriers.

Comparative cost efficiency across the European G5 countries of originators and a biosimilar erythropoiesis-stimulating agent to manage chemotherapy-induced anemia in patients with cancer

OBJECTIVES

To evaluate the comparative cost efficiency across the European Union G5 countries of the erythropoiesis-stimulating agents (ESAs) epoetin α (originator [Eprex®] and biosimilar [Binocrit®]; once weekly), epoetin β (NeoRecormon®; once weekly), and darbepoetin α (Aranesp®; once weekly or once every 3 weeks) under different scenarios of fixed and weight-based dosing in the management of chemotherapy-induced anemia.

METHODS

Direct costs of ESA treatment were calculated for one patient with cancer undergoing chemotherapy (six cycles at 3-week intervals) with ESA initiated at week 4 and continued for 15 weeks. Five scenarios were developed under fixed and weight-based dosing: continuous standard dose for 15 weeks; sustained dose escalation to 1.5× or double the standard dose at week 7, continued for 12 weeks; and discontinued dose escalation to 1.5× or double the standard dose at week 7 for a 3-week period, then 9 weeks of standard dose.

RESULTS

Under fixed dosing, the average cost of biosimilar epoetin α treatment across scenarios was €4643 (30,000 IU) or €6178 (40,000 IU). Corresponding estimates were €7168 for originator epoetin α, €7389 for epoetin β, €8299 for darbepoetin α once weekly, and €9221 for darbepoetin α once every 3 weeks. Under weight-based dosing, the average cost of biosimilar epoetin α treatment across scenarios was €4726. Corresponding estimates were €5484 for originator epoetin α, €5652 for epoetin β, and €8465 for both darbepoetin α once weekly and once every three weeks.

CONCLUSION

Managing chemotherapy-induced anemia with biosimilar epoetin α is consistently cost efficient over treatment with originator epoetin α, epoetin β, and darbepoetin α under both fixed and weight-based dosing scenarios.

Prevalence and management of cancer-related anaemia, iron deficiency and the specific role of i.v. iron

BACKGROUND

Chronic diseases reduce the availability of iron for effective erythropoiesis. This review summarises clinical consequences of iron deficiency (ID) and anaemia in cancer patients, mechanisms how impaired iron homeostasis affects diagnosis and treatment of ID, and data from clinical trials evaluating i.v. iron with or without concomitant erythropoiesis-stimulating agents (ESAs).

DESIGN

Clinical trial reports were identified in PubMed and abstracts at relevant major congresses.

RESULTS

Reported prevalence of ID in cancer patients ranges from 32 to 60% and most iron-deficient patients are also anaemic. Randomised clinical trials have shown superior efficacy of i.v. iron over oral or no iron in reducing blood transfusions, increasing haemoglobin, and improving quality of life in ESA-treated anaemic cancer patients. Furthermore, i.v. iron without additional ESA should be evaluated as potential treatment in patients with chemotherapy-induced anaemia. At recommended doses, i.v. iron is well tolerated, particularly compared with oral iron. No serious drug-related adverse effects were seen during long-term use in renal disease and no effect on tumour growth has been observed in trials with anaemic cancer patients.

CONCLUSIONS

Reliable diagnosis and treatment of ID are recommended key steps in modern cancer patient management to minimise impact on quality of life and performance status.

Overview of supportive care in patients receiving chemotherapy: antiemetics, pain management, anemia, and neutropenia

With advancements in the field of oncology, more and more people are living with cancer. The prevalence of invasive cancer in the United States is estimated to be almost 12 million. The treatment of cancer as well as the malignancy itself can cause an immense number of side effects and other complications. This article explores the fundamentals of supportive care in patients receiving chemotherapy and radiation treatment including prevention of nausea and vomiting, pain management, treatment of anemia and neutropenia. Proper supportive care can help improve clinical outcomes, reduce medical costs, and help patients with cancer live longer, happier, and healthier lives. For these reasons, it is important for pharmacists to possess a solid understanding of how to prevent and treat the adverse effects of chemotherapy and radiation treatment.

The role of intravenous iron in the treatment of anemia in cancer patients

Anemia is a major cause of morbidity in cancer patients resulting in poor physical performance, prognosis and therapy outcome. Initially, erythropoietin-stimulating agents (ESAs) were supposed to be the treatment of choice but about one third of patients turned out to be nonresponders and meta-analyses provided evidence of an increased risk of mortality if used excessively. This along with the successful use of intravenous iron for anemia in patients with chronic kidney disease prompted seven clinical studies evaluating the efficacy of intravenous iron as an adjunct to ESAs and four additional studies using intravenous iron only for anemia in cancer patients. These studies confirmed a superior response if ESAs are combined with intravenous iron and revealed iron only to be a useful option in patients with mild and absolute iron deficiency (AID). Currently, best treatment decisions for anemia in cancer might be based on measurements of serum ferritin (SF), transferrin saturation (TSAT), soluble transferrin receptor (sTfR), ferritin index (FI = sTfR/log SF), hypochromic reticulocytes (CHR) and C-reactive protein (CRP). However, there is still an urgent need for trials investigating diagnostic approaches to optimize therapy of anemia in cancer patients with iron and/or ESAs.

Use of biosimilar epoetin to increase hemoglobin levels in patients with chemotherapy-induced anemia: real-life clinical experience

Aim: To evaluate the effectiveness of a biosimilar erythropoiesis-stimulating agent (Binocrit®) for the treatment of patients with cancer and chemotherapy-induced anemia in real-life clinical practice. Materials & methods: Data were collected retrospectively from patients at five European centers (in France, Italy, The Netherlands, Romania and Spain) who received treatment with Binocrit. Hemoglobin (Hb) levels were recorded at regular intervals during Binocrit therapy for up to 26 weeks. Hb response (an increase of ≥1 g/dl in 4 weeks or a Hb level in the range 10–12 g/dl during the study) was assessed in patients with a Hb level ≥8.5 g/dl at the start of therapy who received treatment for at least 6 weeks. Hb response rates in patients who did and did not receive intravenous (iv.) iron were also assessed, and data on any serious unexpected adverse events were collected. Results: Among evaluable patients (n = 113), 79% achieved a Hb response. Response rates were similar among evaluable patients who received an initial Binocrit dose of 30,000 or 40,000 IU/week (81 vs 78%; p = not significant). The Hb response rate was significantly greater in patients who received iv. iron than in patients who did not receive iv. iron (93 vs 77%; p < 0.05). No serious unexpected adverse events were reported. Conclusion: Use of the biosimilar erythropoiesis-stimulating agent Binocrit is effective and safe for the treatment of patients with cancer and chemotherapy-induced anemia. Supplementation with iv. iron increases the response rate compared with oral or no iron supplementation.

Hepcidin expression in patients with acute leukaemia

BACKGROUND

Hepcidin plays a central role in iron homeostasis, which is regulated by iron stores, the rate of erythropoiesis, inflammation, and hypoxia. Aberrant expression of hepcidin was found in many diseases, however, there is scant information on hepcidin expression in acute leukemia (AL).

MATERIALS AND METHODS

32 patients with AL which diagnosis according to FAB criteria were studied. Serum hepcidin levels, erythropoietin (EPO), interleukin-6 (IL-6), hematological parameters, intracellular and extracellular iron store were evaluated.

RESULTS

Hepcidin was elevated significantly with increased iron storage in patients at onset of AL when erythropoiesis was depressed by blast cells, then decreased significantly with AL remission, while soluble transferrin receptor (sTfR) concentration was elevated. Negative correlations were found between serum hepcidin and erythropoietic markers including RBC, Hb, Ret and sTfR. Positive correlations were shown between hepcidin and ferritin, between hepcidin and ratio of sideroblasts, as well as between hepcidin and IL-6.

CONCLUSIONS

Hepcidin production was regulated by iron stores, inflammation and erythropoietic activity in AL patients. Erythropoietic activity may play the main role among the regulators of hepcidin expresssion.

Targeting the hepcidin-ferroportin axis to develop new treatment strategies for anemia of chronic disease and anemia of inflammation

Anemia of chronic disease (ACD) or anemia of inflammation is prevalent in patients with chronic infection, autoimmune disease, cancer, and chronic kidney disease. ACD is associated with poor prognosis and lower quality of life. Management of ACD using intravenous iron and erythropoiesis stimulating agents are ineffective for some patients and are not without adverse effects, driving the need for new alternative therapies. Recent advances in our understanding of the molecular mechanisms of iron regulation reveal that increased hepcidin, the iron regulatory hormone, is a key factor in the development of ACD. In this review, we will summarize the role of hepcidin in iron homeostasis, its contribution to the pathophysiology of ACD, and novel strategies that modulate hepcidin and its target ferroportin for the treatment of ACD.

Evaluation of cost savings with ferric carboxymaltose in anemia treatment through its impact on erythropoiesis-stimulating agents and blood transfusion: French healthcare payer perspective

OBJECTIVE

To evaluate the economic impact of intravenous iron (in the form of intravenous iron preparation of ferric carboxymaltose) in three different clinical settings of iron deficiency anemia: chemotherapy-induced anemia in breast cancer, chemotherapy-induced anemia in digestive cancer, and perioperative anemia in knee and hip surgery.

METHODS

The economic model compared the usual therapeutic strategies of anemia without intravenous iron and strategies including intravenous iron, in each of the three clinical settings selected. Costs related to anemia treatment by erythropoiesis-stimulating agents (ESA), blood transfusion, and intravenous iron were estimated and compared inside each setting. Cost savings were calculated from the French healthcare payer perspective. Data included in the economic model were obtained from scientific literature, public health agencies, and medical experts.

RESULTS

The most prominent annual cost savings were observed in chemotherapy-induced anemia in breast cancer (€997 and €360 per patient for metastatic and non-metastatic breast cancers, respectively; global cost saving, €33.6 million). This large impact of intravenous iron on costs was mainly explained by both a lower number of women treated and lower ESA dosing. Mean annual cost saving in digestive cancers and knee and hip surgery were estimated to €168 and €216 per patient and global cost savings of €7.5 and €12.1 million, respectively. Overall, annual cost savings in these three settings were estimated to €53 million including €39 million for ESA cost savings. Sensitivity analysis showed that strategies including intravenous iron remained cost-effective even with wide variations in the assumptions, particularly for cost savings on ESA.

LIMITATIONS

Economic model based on literature data and expert opinions.

CONCLUSIONS

The present economic model suggests that use of intravenous iron, according to recommendations of international guidelines, is cost saving, particularly in chemotherapy-induced anemia in breast cancers.

The investigation and treatment of secondary anaemia

Secondary anaemia or the anaemia of chronic disease (ACD) is the commonest form of anaemia in hospitalised patients and the second most prevalent anaemia worldwide after iron deficiency. It is characterised by defective iron incorporation in erythropoiesis, an impaired response to erythropoietin, a decrease in erythropoietin production and cytokine induced shortening of red cell survival. For many patients with ACD the cause is apparent but for many others the underlying disease needs to be determined and such patients are often referred to haematologists for investigation. The search for the cause can be a fascinating exercise in good history taking, examination skills and performing and interpreting appropriate investigations. This review covers the pathogenesis and causes of ACD and then discusses the clinical and laboratory investigation of a patient with suspected ACD. Finally, the management of a patient with ACD is discussed including erythropoiesis stimulating agents (ESAs), intravenous iron and future therapies.

Diagnosis and management of anaemia and iron deficiency in patients with haematological malignancies or solid tumours in France in 2009-2010: the AnemOnHe study

OBJECTIVE

To describe the management of anaemia in 2009-2010 in France in patients with haematological malignancies (HM) or solid tumours (ST).

METHODS

Retrospective observational study in 57 centres, enrolling adult patients with HM or ST treated for an episode of anaemia (duration of the episode ≥ 3 months occurring in the last 12 months).

RESULTS

220 patients with ST (breast, 18%; lung, 18%) and 56 with HM (lymphoma, 60%) were included (median age, 68 years; female, 53%). Mean haemoglobin level at anaemia diagnosis was 9.3 ± 1.4 g/dL (<8 g/dL for 16%) and 9.8 ± 1.1g/dL (<8 g/dL for 6%) in HM and ST patients, respectively. At least one parameter of iron deficiency (ferritin, transferrin saturation) was assessed in 26% of HM and 19% of ST patients. Treatment of anaemia included erythropoiesis-stimulating agents (ESA) for 98% of HM and 89% of ST patients. Iron was prescribed to 14% (oral, 12%; intravenous, 2%) of HM patients and to 42% (oral, 17%; intravenous, 25%) of ST patients. The rates of blood transfusions were high: 70% in HM and 46% in ST patients; transfusions alone or administrated with ESA were more frequent in patients with Hb <8 g/dL.

CONCLUSION

Although recent guidelines recommend evaluating iron deficiency and correcting anaemia by using intravenous iron, our study in cancer patients evidenced that ESA and blood transfusions are still frequently used as the treatment of anaemia in cancer patients. Iron deficiency is insufficiently assessed (only one patient among five) and as a consequence iron deficiency is most likely insufficiently treated.

Effects of iron supplementation on erythropoietic response in patients with cancer-associated anemia treated by means of erythropoietic stimulating agents

During the past decade, intravenous iron supplementation to ESA (erythropoiesis-stimulating agent) therapy has emerged as an option to augment hemoglobin response in anemic cancer patients. In this paper, the results of seven published randomized clinical trials assessing the role of iron supplementation to ESA therapy in the hematology/oncology setting will be discussed. The pathogenetic mechanisms behind functional iron deficiency, a major reason for ESA hyporesponsiveness in cancer, will also be described.

Potential health economic impact of intravenous iron supplementation to erythropoiesis-stimulating agent treatment in patients with cancer- or chemotherapy-induced anemia

BACKGROUND

Intravenous (i.v.) iron supplementation significantly improves the response to erythropoiesis-stimulating agent (ESA)-based therapies in patients with cancer- or chemotherapy-induced anemia. The economic implications of adding i.v. iron to ESA treatment are less well investigated. Published randomized controlled trials do not provide sufficient data for a comprehensive cost-effectiveness analysis.

METHODS

Preliminary cost calculations from the Swiss health care system perspective based on a meta-analysis and published results of eight randomized controlled trials without correction for decreased ESA need provide a conservative cost-effectiveness estimate.

RESULTS

The additional total cost of i.v. iron supplementation ranged from EUR 417 to EUR 901 per patient depending on the evaluated iron-carbohydrate complex. Considering a 24% absolute increase in the proportion of ESA responders, the incremental cost-effectiveness ratios per additional responder are EUR 1,704-3,686. In routine practice, better values may be achieved due to ESA dose savings.

CONCLUSION

Supplementation of ESAs with i.v. iron appears to be an economically viable treatment option in anemic cancer patients. Additional research on ESA dose savings and cost-effectiveness is required.

Iron replacement therapy in cancer-related anemia

PURPOSE

The incidence, etiology, and management of cancer-related anemia is reviewed and the role of i.v. iron therapy in its treatment is described.

SUMMARY

Between 30% and 90% of patients with cancer develop anemia due to direct effects of the disease, its treatment, underlying nutritional deficiencies, and the inflammation that characterizes chronic disease. Although the use of erythropoiesis-stimulating agents (ESAs) increases hemoglobin levels and decreases the need for transfusions, up to 50% of patients do not to respond to these drugs, usually due to the presence of absolute or functional iron deficiency. Multiple clinical trials have demonstrated that i.v. iron supplementation in patients with cancer-related anemia improves the response rate to ESAs, reduces the time to target hemoglobin levels, decreases ESA requirements, reduces costs, and is more efficacious than oral iron. These benefits are seen without increased toxicity. Nonetheless, i.v. iron remains underused in patients with cancer, partly due to misinformation and misinterpretation of the clinical nature of adverse events.

CONCLUSION

Intravenous iron is underutilized in patients with cancer-related anemia. Based on published evidence, i.v. iron supplementation in patients with absolute or functional iron deficiency can improve patient responses to ESAs and reduce ESA requirements and may also reduce the need for transfusions and improve quality of life.

Erythropoiesis-stimulating agents for anemic patients with cancer

Anemia in cancer patients is common and often associated with decreased survival and quality-of-life scores. The introduction of erythropoiesis-stimulating agents (ESAs) for the treatment of anemia in patients with solid tumors and nonmyeloid malignancies in the 1990s has proved an important alternative to red blood cell transfusions. ESAs have been consistently shown to increase hemoglobin levels and reduce transfusion requirements in anemic cancer patients whilst also being associated with improvements in quality of life. Several recent studies, however, have raised concerns about the safety of ESAs with regards to an increased number of thrombo-embolic events, decreased on-study survival and possible effects of ESAs on tumor progression. This has led to a reappraisal of the role of ESAs in the treatment of anemic cancer patients. It remains generally accepted that, if used within current guidelines and labeling recommendations, ESAs can still be considered safe in patients receiving chemotherapy once individual risks are balanced against possible benefits.

Management of anemia in cancer patients

Cancer-related anemia adversely affects quality of life and is associated with reduced overall survival. The correction of anemia in cancer patients has the potential to improve treatment efficacy and increase survival. A large number of studies demonstrate that treatment of anemia in cancer patients using erythropoiesis-stimulating agents (ESAs) significantly increases hemoglobin levels, decreases transfusion requirements and improves quality of life, predominantly by reducing fatigue. Some data on the use of ESAs in cancer patients indicate an increased risk of thromboembolic events and a possibly increased risk of mortality. However, there is ample evidence that when ESAs are used within current guidelines, they are valuable and safe drugs for the treatment of anemia in patients receiving radiotherapy and/or chemotherapy. There are increasing data from prospective, randomized trials demonstrating better responses to ESAs with the concurrent use of iron. Blood transfusions are also helpful in the management of anemia in cancer patients, especially when there is a need for immediate increases in hemoglobin levels. In this article, we discuss recent aspects relating to treatment modalities for anemia in cancer patients.

Phase III, randomized study of the effects of parenteral iron, oral iron, or no iron supplementation on the erythropoietic response to darbepoetin alfa for patients with chemotherapy-associated anemia

PURPOSE

Functional iron deficiency may impair response to erythropoiesis-stimulating agents (ESAs) in iron-replete patients with chemotherapy-associated anemia (CAA). This study evaluated whether coadministration of parenteral iron improves ESA efficacy in patients with CAA.

PATIENTS AND METHODS

This prospective, multicenter, randomized trial enrolled 502 patients with hemoglobin (Hb) less than 11 g/dL who were undergoing chemotherapy for nonmyeloid malignancies. All patients received darbepoetin alfa once every 3 weeks and were randomly assigned to receive either ferric gluconate 187.5 mg intravenously (IV) every 3 weeks, oral daily ferrous sulfate 325 mg, or oral placebo for 16 weeks.

RESULTS

There was no difference in the erythropoietic response rate (ie, proportion of patients achieving Hb ≥ 12 g/dL or Hb increase ≥ 2 g/dL from baseline): 69.5% (95% CI, 61.9% to 76.5%) of IV iron-treated patients achieved an erythropoietic response compared with 66.9% (95% CI, 59.1% to 74.0%) who received oral iron and 65.0% (95% CI, 57.2% to 72.3%) who received oral placebo (P = .75). There were also no differences in the proportion of patients requiring red cell transfusions, changes in quality of life, or the dose of darbepoetin administered. Adverse events (AEs) tended to be more common in the IV iron arm: grade 3 or higher AEs occurred in 54% (95% CI, 46% to 61%) of patients receiving IV iron compared with 44% (95% CI, 36% to 52%) who received oral iron and 46% (95% CI, 38% to 54%) who received oral placebo (P = .16).

CONCLUSION

In patients with CAA, addition of IV ferric gluconate to darbepoetin failed to provide additional benefit compared with oral iron or oral placebo.

American Society of Clinical Oncology/American Society of Hematology clinical practice guideline update on the use of epoetin and darbepoetin in adult patients with cancer

PURPOSE

To update American Society of Clinical Oncology/American Society of Hematology recommendations for use of erythropoiesis-stimulating agents (ESAs) in patients with cancer.

METHODS

An Update Committee reviewed data published between January 2007 and January 2010. MEDLINE and the Cochrane Library were searched.

RESULTS

The literature search yielded one new individual patient data analysis and four literature-based meta-analyses, two systematic reviews, and 13 publications reporting new results from randomized controlled trials not included in prior or new reviews.

RECOMMENDATIONS

For patients undergoing myelosuppressive chemotherapy who have a hemoglobin (Hb) level less than 10 g/dL, the Update Committee recommends that clinicians discuss potential harms (eg, thromboembolism, shorter survival) and benefits (eg, decreased transfusions) of ESAs and compare these with potential harms (eg, serious infections, immune-mediated adverse reactions) and benefits (eg, rapid Hb improvement) of RBC transfusions. Individual preferences for assumed risk should contribute to shared decisions on managing chemotherapy-induced anemia. The Committee cautions against ESA use under other circumstances. If used, ESAs should be administered at the lowest dose possible and should increase Hb to the lowest concentration possible to avoid transfusions. Available evidence does not identify Hb levels ≥ 10 g/dL either as thresholds for initiating treatment or as targets for ESA therapy. Starting doses and dose modifications after response or nonresponse should follow US Food and Drug Administration-approved labeling. ESAs should be discontinued after 6 to 8 weeks in nonresponders. ESAs should be avoided in patients with cancer not receiving concurrent chemotherapy, except for those with lower risk myelodysplastic syndromes. Caution should be exercised when using ESAs with chemotherapeutic agents in diseases associated with increased risk of thromboembolic complications. Table 1 lists detailed recommendations.