Study of Propranolol as Anti-Adhesive Therapy in Sickle Cell Disease (SCD)

Status Completed

Clinical Trial Summary

An open label, prospective, randomized cross-over phase II study in up to 60 sickle cell patients who are either homozygous for Hb S or have HbSB0 thalassemia. Initially, each patient will be treated for 6 weeks with placebo or a standard dose of propranolol (40 mg) every 12 hrs. This will be followed by a 2-week washout period after which, patients will receive the other treatment modality (placebo or propranolol).

We Hypothesize that propranolol administered in vivo on a daily basis for 6 weeks (1) will decrease baseline adhesion to endothelial cells and will substantially abrogate epinephrine-stimulated adhesion to endothelial cells, as measured in vitro; (2) will improve biomarkers of endothelial activation and dysfunction; and (3) can be safely used in patients with SCD. Thus, the use of propranolol in SCD may represent a safe and effective means of anti-adhesive therapy in SCD.

Study Objectives:

Primary Objective:

• To establish the safety and efficacy of long-term therapy with propranolol as an anti-adhesive therapy for SCD.

Secondary Objective:

• To evaluate changes in soluble markers of endothelial activation and dysfunction.

Correlative Science Objective:

• To determine whether response to propranolol therapy is associated with polymorphisms in genes encoding the proteins involved in the upregulation of Sickle Red Blood Cell (SS RBC) adhesion by epinephrine.

Clinical Trial Description

n/a

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Caregiver, Investigator), Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT01077921
Study type	Interventional
Source	Duke University
Contact
Status	Completed
Phase	Phase 2
Start date	June 2010
Completion date	December 2013

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