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Oral Iron Supplementation in Pulmonary Hypertension

This study has been completed.
Information provided by (Responsible Party):
Samar Farha, MD, The Cleveland Clinic Identifier:
First received: October 3, 2011
Last updated: August 11, 2014
Last verified: August 2014
The purpose of this study is to investigate the effects of iron supplementation in patients with pulmonary arterial hypertension and iron deficiency.

Condition Intervention
Pulmonary Arterial Hypertension
Dietary Supplement: iron supplement

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Oral Iron Supplementation in Pulmonary Hypertension

Resource links provided by NLM:

Further study details as provided by The Cleveland Clinic:

Primary Outcome Measures:
  • Change in Zinc protoporphyrin from baseline [ Time Frame: 3 months ]
  • Change in serum ferritin from baseline [ Time Frame: 3 months ]

Secondary Outcome Measures:
  • Change in serum erythropoietin from baseline [ Time Frame: 3 months ]
  • Change in transferrin saturation from baseline [ Time Frame: 3 months ]
  • Change in %CD34+/133+ cells from baseline [ Time Frame: 3 months ]
  • Change in pulmonary arterial pressure from baseline [ Time Frame: 3 months ]
    estimated using echocardiogram

  • Change in six minute walk distance from baseline [ Time Frame: 3 months ]
  • NYHA/WHO classification [ Time Frame: 3 months ]
  • Side effects of iron supplementation [ Time Frame: 3 months ]
  • Deaths and hospitalizations greater than 24 hours [ Time Frame: 3 months ]

Enrollment: 6
Study Start Date: January 2012
Study Completion Date: August 2014
Primary Completion Date: August 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: iron supplement
open-label iron supplement intervention group
Dietary Supplement: iron supplement
325 mg tablets by mouth once a day for 1 week, then twice a day for 1 week, then three times daily for the remainder of the 3-month study period.
Other Name: ferrous sulfate tablets

Detailed Description:
Pulmonary arterial hypertension (PAH) is a chronic disease associated with upregulation of hypoxia inducible-factor-1alpha (HIF-1alpha) and functional iron deficiency. The investigators are proposing a prospective, single-arm, open-label intervention to determine whether oral iron supplementation in patients with pulmonary arterial hypertension reduces markers of HIF activation and improve clinical parameters of disease. After the baseline visit, patients will be given ferrous sulfate tablets to take orally for 3 months. Outcome data will be collected at the baseline visit and at the end of the 3-month study period.

Ages Eligible for Study:   21 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • age 21 and older
  • diagnosis of idiopathic pulmonary arterial hypertension
  • iron deficiency (transferrin saturation <20% and serum ferritin < 100 ug/l)

Exclusion Criteria:

  • active infection, malignancy, or bleeding
  • hemochromatosis
  • chronic inflammatory or autoimmune disease
  • currently taking experimental/study medications, erythropoietin, iron supplementation, or immunosuppressants
  • allergy to iron
  Contacts and Locations
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Please refer to this study by its identifier: NCT01446848

United States, Ohio
Cleveland Clinic Foundation
Cleveland, Ohio, United States, 44195
Sponsors and Collaborators
The Cleveland Clinic
Principal Investigator: Samar Farha, MD The Cleveland Clinic
  More Information

Responsible Party: Samar Farha, MD, Staff Pulmonologist, The Cleveland Clinic Identifier: NCT01446848     History of Changes
Other Study ID Numbers: RPC-2011-1026
Study First Received: October 3, 2011
Last Updated: August 11, 2014

Keywords provided by The Cleveland Clinic:
iron deficiency
pulmonary hypertension
iron supplements
ferrous sulfate

Additional relevant MeSH terms:
Hypertension, Pulmonary
Familial Primary Pulmonary Hypertension
Vascular Diseases
Cardiovascular Diseases
Lung Diseases
Respiratory Tract Diseases
Trace Elements
Growth Substances
Physiological Effects of Drugs processed this record on May 25, 2017