Intravenous Ferric Carboxymaltose (Ferinject®) With or Without Erythropoietin in Patients Undergoing Orthopaedic Surgery

NCT ID: NCT00706667

Last Updated: 2013-06-20

Basic Information

• Recruitment Status: TERMINATED
• Clinical Phase: PHASE4
• Total Enrollment: 75 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2008-05-31
• Study Completion Date: 2012-12-31

Brief Summary

Study Design: Single-centre, block randomised, blinded, controlled, phase IIIb, parallel group pilot study.

Primary Objective:

• To evaluate the effect of the administration of ferric carboxymaltose (Ferinject®) with or without erythropoietin vs. no treatment (standard therapy) on the preoperative anaemia status in patients undergoing orthopaedic surgery

Secondary Objective:

• To gain informations for the design of a possible follow-up study
• To evaluate the effect of the administration of ferric carboxymaltose (Ferinject®) with or without erythropoietin vs. no treatment (standard therapy) on pre- and postoperative Hb levels, iron status, transfusion rate, days until discharge.
• To evaluate the tolerability and safety of Ferinject®

Study Centres:

This is a single centre study

Patients:

A total of 75 completed patients (50 patients in the intravenous iron treatment groups and 25 patients in the no treatment group will be recruited.

Detailed Description

TREATMENT:

Patients will be randomised 1:1:1 to one of the following groups:

Group I - Ferinject ® and EPO treatment group 25 patients will be randomised to the Ferinject and EPO treatment group.

For each patient, the cumulative total iron requirement will be calculated using the formula of Ganzoni [Ganzoni et al, 1970]:

Iron deficit [mg] = b.w. [kg]† x (target Hb - actual Hb) [g/L] x 0.24†† + depot iron [mg]

† In patients with a body mass index (BMI = weight [kg] / (height [m] x height [m])) >25, a normalised weight will be used to calculate the iron deficit. Normalised weight [kg] = 25 x height [m] x height [m].

†† Factor 0.24 = 0.0034 (iron content Hb = 0.34%) * 0.07 (blood volume = 7% of b.w.) * 1000 (conversion g to mg) Target Hb: 150 g/L Actual Hb: Value obtained at screening visit Depot iron: 500 mg

Patients will receive a first dose of 1000 mg iron as Ferinject® 21 days prior to the scheduled surgery. Patients will receive Ferinject® once weekly for up to two occasions (Day -21 and Day -14) until the calculated cumulative dose is reached for that individual. The Day -14 infusion may not be necessary, depending on the calculated total iron requirement for each patient. Patients in treatment group 1 will get additionally a single 10000 IU dose of EPO together on treatment day -14.

Group II - Ferinject ® treatment group 25 patients will be randomised to the Ferinject without EPO.

For each patient, the cumulative total iron requirement will be calculated using the formula of Ganzoni [Ganzoni et al, 1970]:

Iron deficit [mg] = b.w. [kg]† x (target Hb - actual Hb) [g/L] x 0.24†† + depot iron [mg]

† In patients with a body mass index (BMI = weight [kg] / (height [m] x height [m])) >25, a normalised weight will be used to calculate the iron deficit. Normalised weight [kg] = 25 x height [m] x height [m].

†† Factor 0.24 = 0.0034 (iron content Hb = 0.34%) * 0.07 (blood volume = 7% of b.w.) *1000 (conversion g to mg) Target Hb: 150 g/L Actual Hb: Value obtained at screening visit Depot iron: 500 mg

Patients will receive a first dose of 1000 mg iron as Ferinject 21 days prior to the scheduled surgery. Patients will receive Ferinject® once weekly for up to two occasions (Day -21 and Day -14) until the calculated cumulative dose is reached for that individual. The Day -14 infusion may not be necessary, depending on the calculated total iron requirement for each patient.

Group III - Control group 25 patients will receive the standard treatment for this patient population (no anaemia treatment).

Primary Efficacy Endpoints

• Hb increase from baseline till day of surgery

Secondary Efficacy Endpoints

• Percentage of patients reaching an Hb of > 12 g/dl (women) or of > 13 g/dl (men) at any point in time during the study
• Change in Hb level from baseline to highest Hb level during the study
• Change in Ferritin value from baseline to highest ferritin value during the study
• Change in Tsat value from baseline to highest Tsat value during the study
• Transfusion rate
• Infection rate
• Days until discharge from hospital
• Days until rehabilitation therapy

Secondary Safety Endpoints:

• Adverse events: type, nature, incidence and outcome
• Vital signs (temperature, blood pressure and heart rate)
• Clinical laboratory panels (haematology/coagulation, clinical chemistry, except Hb and iron status, which are considered to be efficacy endpoints)

Laboratory parameters:

Hematology/coagulation parameters to be analysed are Hb, haematocrit (Hct), red blood cell count (RBC), white blood cell count (WBC) with differential and platelet count, mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH), mean corpuscular haemoglobin concentration (MCHC).

Clinical chemistry parameters to be analysed are alkaline phosphatase (AP), gamma-glutamyl transpeptidase (GGT), aspartate aminotransferase (AST), alanine aminotransferase (ALT), C-reactive protein (CRP), endogenous erythropoietin.

Iron status parameters include serum iron, serum ferritin, serum transferrin and TSAT.

Additional parameters - folic acid, vitamin B12 and beta-HCG will be analysed at baseline only, creatinin, soluble transferrin receptor and total bilirubin will be analysed at all visits.

Statistical Methods:

Summary statistics will be provided for safety and efficacy parameters as well as for the patients' demographic characteristics. Data will be presented per visit, if appropriate. The test for the primary endpoint is confirmative. Statistical tests of secondary endpoints will be employed for exploratory purposes to highlight interesting comparisons (e.g., baseline versus end of study) that may warrant further consideration. Unless otherwise specified, the significance level of all statistical tests will be 5% with a two-sided alternative. If appropriate, corresponding 95%-confidence intervals will be calculated. The sample size estimation is based on t-test calculation.

Continuous variables will be summarized as mean +/- SD and median with range where appropriate. Continuous variables will be compared using the Kruskal-Wallis test followed by pairwise Mann-Whitney tests with Bonferroni-correction. Nominal variables will be compared using the chi-square test or Fisher's exact test where appropriate. Changes within groups of nominal variables will be analyzed using McNemar test.

Changes within groups of continuous variables will be analyzed using the Friedman test followed by pairwise post hoc comparisons using the Wilcoxon signed rank test with Bonferroni correction. Prevalence of anaemia will be presented with exact confidence interval (CI). Continuous variables will be transformed to normal distribution, and CIs for the mean will be computed. The limits of these CIs then will be retransformed to the original units and interpreted as CIs for the median.

Conditions

Iron Deficiency Anemia

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Study Groups

1

Placebo for EPO and for Ferinject ®

Group Type: PLACEBO_COMPARATOR

Ferinject ®

Intervention Type: DRUG

iv administration in Arm 1 placebo NaCl 0.9% In arm 2 iv administration of Ferinject ® and subcutaneous NaCl 0.9 % as an EPO placebo In arm 3 iv administration of Ferinject ® and subcutaneous EPO

2

Only Ferinject ® , Placebo for EPO

Group Type: ACTIVE_COMPARATOR

Ferinject ®

Intervention Type: DRUG

iv administration in Arm 1 placebo NaCl 0.9% In arm 2 iv administration of Ferinject ® and subcutaneous NaCl 0.9 % as an EPO placebo In arm 3 iv administration of Ferinject ® and subcutaneous EPO

3

Ferinject ® + EPO

Group Type: ACTIVE_COMPARATOR

Ferinject ®

Intervention Type: DRUG

iv administration in Arm 1 placebo NaCl 0.9% In arm 2 iv administration of Ferinject ® and subcutaneous NaCl 0.9 % as an EPO placebo In arm 3 iv administration of Ferinject ® and subcutaneous EPO

Interventions

Ferinject ®

iv administration in Arm 1 placebo NaCl 0.9% In arm 2 iv administration of Ferinject ® and subcutaneous NaCl 0.9 % as an EPO placebo In arm 3 iv administration of Ferinject ® and subcutaneous EPO

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• > 18 years of age and signed written informed consent
• Patients scheduled to undergo major orthopaedic surgery (hip or knee arthroplasty or back surgery)
• 10 g/dl < Hb < 13.0 g/dl for men and 10 g/dl < Hb < 12.0 g/dl for women, at screening ( 3 weeks prior to surgery)
• Ferritin < 100 μg/l or 100-300 with TSat < 20%

Exclusion Criteria

• Suspicion of iron overload (Ferritin >300 μg/l or/and TSAT>50%)
• Active severe infection/inflammation (defined as serum CRP > 20 mg/l) or diagnosed malignancy
• Folate-and/or Vitamin B12 deficiency (according to local lab reference range)
• Known history of hepatitis B/C or HIV-positive
• Liver values 3 times higher than normal
• Immunosuppressive or myelosuppressive therapy
• A concurrent medical condition(s) that, in the view of the investigator, would prevent compliance or participation or jeopardize the health of the patients.
• Pregnancy or lactation
• Transfusion within 1 month prior to study inclusion, EPO treatment with in the last 4 weeks, any iron treatment within 4 weeks prior to the inclusion in the trail
• Participation in any other therapeutic trial within the previous month
• History of thromboembolic events in the family or the patient
• Severe peripheral, coronary or carotid artery disease
• Bodyweight < 50 kg
• Patients not able to understand the German language

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Vifor Pharma

INDUSTRY

Sponsor Role: collaborator

University of Zurich

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Oliver Theusinger, MD

Role: PRINCIPAL_INVESTIGATOR

University Hospital Zurich, Division of Anaesthesiology

Locations

University Hospital Zurich, Division of Anaesthesiology

Zurich, Canton of Zurich, Switzerland

Countries

Switzerland

Other Identifiers

StV 07-2008

Identifier Type: -

Identifier Source: org_study_id