Clinical trial NCT05098249: Ferric Carboxymaltose With or Without Phosphate Substitution for the Treatment of Iron Deficiency or Iron Deficiency Anemia
Official title: Ferric Carboxymaltose With or Without Phosphate Substitution for the Treatment of Iron Deficiency or Iron Deficiency Anemia Before Elective Surgery - the DeFICIT Trial
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE4
Conditions: Anemia
Iron-deficiency
Hypophosphatemia
Keywords: iron-deficiency anemia
hypophosphatemia
elective surgery
iron-deficiency
preoperative iron substitution
phosphate substitution
Lead sponsor: University of Zurich
Sponsor class: OTHER
Collaborators: name: University of Zurich
First posted: 2021-10-28
Enrollment: 92
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: This is a confirmatory trial to establish superior serum phosphate stability associated with use of Phoscap® compared with placebo as a supplement for treatment of iron deficiency or iron deficiency anemia with Ferinject® before elective surgery.

Detailed description: Iron deficiency anemia is a global health problem most commonly caused by excessive blood loss, impaired intestinal iron absorption, or chronic inflammation. In the perioperative setting, intravenous ferric carboxymaltose allows efficient treatment of preoperative iron deficiency and anemia. Recent studies have implied that ferric carboxymaltose might cause hypophosphatemia. Notably, hypophosphatemia has been associated with less muscle strength, which may influence early post-surgery recovery of patients. Additional oral phosphate supplementation may alleviate this hypophosphatemia.

This is a confirmatory trial to establish superior serum phosphate stability associated with use of Phoscap® compared with placebo as a supplement for treatment of iron deficiency or iron deficiency anemia with Ferinject® before elective surgery.

This is also a confirmatory trial to establish non-inferior efficacy of Phoscap® compared with placebo for the treatment of iron deficiency or iron deficiency anemia with Ferinject®; and to establish superior core muscle strength associated with the use of Phoscap® compared with placebo.

Eligibility criteria: Inclusion Criteria:

* Informed Consent as documented by signature (Appendix 5: Informed Consent Form)
* Male or female ASA 1 to 3 patients, at least 18 years old
* Scheduled for an elective major abdominal or thoracic surgery.
* Patients with isolated iron deficiency (defined as hemoglobin concentration (Hb) \> 130 g/l, and plasma Ferritin \< 100 ng/ml or TSAT \< 20%), or iron deficiency anemia (defined as Hb 100-130 g/l, and plasma Ferritin \< 100 ng/ml or TSAT \< 20%).
* Patients scheduled to be hospitalized ≥ 3 days.

Exclusion Criteria:

* Patients with known anaphylactic reactions to parenteral iron products. Patients with allergy/hypersensitivity to any contents of Ferinject® or Phoscap®.
* Patients with iron overload or disturbances in utilization of iron (e.g. haemochromatosis, hemosiderosis).
* Patients with ≥3 times increase in aspartate aminotransferase or alanine aminotransferase as per reference range.
* Patients with excessive blood loss requiring massive transfusion (≥ 10 more red blood cell units).
* Patients with known myelodysplastic syndromes.
* Patients with chronic kidney disease with an estimated GFR \< 30 ml/min or with end-stage renal disease requiring scheduled dialysis.
* Patients with known urinary tract infections with urea-splitting bacteria.
* Patients with known diseases influencing phosphate, calcium or vitamin D homeostasis (e.g. Hyperparathyroidism, X-linked hypophosphatemia, renal tubular acidosis).
* Patients taking medication significantly influencing phosphate, calcium or vitamin D homeostasis (e.g. vitamin D substitution \> 800 I.E. per day in the last 4 months, pre-existing phosphate substitution, phosphate binders).
* Patients with preexisting hypophosphatemia
* Any patient judged to lack the ability to give informed consent or perform the trial assessments (e.g. due to dementia, insufficient knowledge of the German language).
* Women who are pregnant or breast feeding,
* Intention to become pregnant during the course of the study,
* Lack of safe contraception, defined as: Female participants of childbearing potential, not using and not willing to continue using a medically reliable method of contraception for the entire study duration, such as oral, injectable, or implantable contraceptives, or intrauterine contraceptive devices, or who are not using any other method considered sufficiently reliable by the investigator in individual cases (Female participants who are surgically sterilized / hysterectomized or post-menopausal for longer than 2 years are not considered as being of child bearing potential),
* Known or suspected non-compliance, drug or alcohol abuse.
* Participation in another study with investigational drug within the 30 days preceding and during the present study.
* Any patient judged by the Principal Investigator or Sub-Investigator to be inappropriate for the trial for any other reason.

Primary outcomes:
measure: Establish superior serum phosphate stability
timeFrame: 3 years
Secondary outcomes:
measure: Perioperative hemoglobin concentration
timeFrame: 3 years
measure: Core muscle strength
timeFrame: 3 years
Other outcomes:
Locations:
city: Zurich
country: Switzerland
facility: University Hospital Zurich
Study officials:
affiliation: University of Zurich
name: Donat R Spahn, Prof. Dr.
role: PRINCIPAL_INVESTIGATOR
References:
citation: Munoz M, Gomez-Ramirez S, Campos A, Ruiz J, Liumbruno GM. Pre-operative anaemia: prevalence, consequences and approaches to management. Blood Transfus. 2015 Jul;13(3):370-9. doi: 10.2450/2015.0014-15. Epub 2015 Jun 16. No abstract available.
citation: Munoz M, Laso-Morales MJ, Gomez-Ramirez S, Cadellas M, Nunez-Matas MJ, Garcia-Erce JA. Pre-operative haemoglobin levels and iron status in a large multicentre cohort of patients undergoing major elective surgery. Anaesthesia. 2017 Jul;72(7):826-834. doi: 10.1111/anae.13840. Epub 2017 Apr 6.
citation: Wolf M, Koch TA, Bregman DB. Effects of iron deficiency anemia and its treatment on fibroblast growth factor 23 and phosphate homeostasis in women. J Bone Miner Res. 2013 Aug;28(8):1793-803. doi: 10.1002/jbmr.1923.