BioRBC Survival in Adults With Prior Antibody Response to BioRBCs

This study is currently recruiting participants. (see Contacts and Locations)
Verified December 2014 by University of Iowa
National Heart, Lung, and Blood Institute (NHLBI)
Information provided by (Responsible Party):
University of Iowa Identifier:
First received: February 27, 2014
Last updated: December 23, 2014
Last verified: December 2014

Objective: To gather safety and efficacy BioRBC data from adult subjects who previously developed transient BioRBC antibody responses by redosing them and observing for adverse clinical or laboratory (i.e., a positive BioRBC antibody titer) outcomes to determine if RBC kinetic study results differ from the previous study.

Hypothesis: BioRBC survival studies performed in adult subjects who previously developed a transient BioRBC antibody response will: 1) be associated with no adverse clinical or laboratory events; 2) experience a second transient, BioRBC antibody response; and 3) display a pattern of RBC survival that is identical to their prior dosing with BioRBCs at the same dose.

Condition Intervention Phase
Drug: biotin labelled RBCs
Phase 1

Study Type: Interventional
Study Design: Endpoint Classification: Safety Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Diagnostic
Official Title: BioRBC Survival in Adults With Prior Antibody Response to BioRBCs

Resource links provided by NLM:

Further study details as provided by University of Iowa:

Primary Outcome Measures:
  • Presence of biotin antibody in blood sample after transfusion of biotinylated RBCs [ Time Frame: 10 min to day when antibody is no longer detected, typically 6 months. ] [ Designated as safety issue: Yes ]

Estimated Enrollment: 4
Study Start Date: May 2013
Estimated Study Completion Date: June 2017
Estimated Primary Completion Date: June 2017 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Biotin labelled RBCs
Subjects receive biotin labelled autologous red blood cells.
Drug: biotin labelled RBCs
Autologous red blood cells are biotin labelled and transfused to the subject. Survival of these red blood cells is tracked through examination of blood samples until no biotin labelled red blood cells remain.
Other Name: biotinylated RBCs

  Show Detailed Description


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Female and male subjects
  • Age 18 years or older
  • Normal with respect to serum chemistry, and hematology panels. Values outside the normal range, but not considered to be a health risk by the investigator will not exclude a subject
  • Consented for the study and have signed an IRB-approved Informed Consent

Exclusion Criteria:

Subjects who had any of the following criteria were excluded from the study:

  • History of a clinically significant acute or chronic disease process
  • Evidence of previous or current significant cardiovascular (including uncontrolled hypertension), hematologic, gastrointestinal (including hepatic), renal, metabolic, or neurological disorders or clinically significant allergies
  • History of autoimmune haemolytic anemia, RBC autoantibodies or alloantibodies, or autoimmune disease
  • History of congenital red cell disorders including glucose-6-phosphate dehydrogenase (G-6PD) deficiency
  • Positive pregnancy test result
  • Whole blood donation within 8 weeks or 2-unit RBC collection within 16 weeks of planned study whole blood donation
  • Inability of subject to comply with the protocol in the Investigator's opinion.
  • A female who was breast-feeding an infant or child
  • Positive Direct or Indirect Antiglobulin Test result
  • Immunosuppressive therapy (e.g., oral or intravenous prednisone) within the preceding 28 days
  • Subjects who participated in another clinical study concurrently or within 28 days prior to starting the study
  • Presence of plasma or serum anti-biotin antibodies to biotinylated RBCs (i.e., RBC labelled at a density of 54 μg/mL when tested using IgG gel card method)
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT02077751

Contact: Gretchen Cress, BS 319-356-2151

United States, Iowa
University of Iowa Recruiting
Iowa City, Iowa, United States, 52242
Contact: John A Widness, M.D.    319-356-8102   
Contact: Gretchen A Cress, B.S.N.    319-356-2151   
Principal Investigator: John A Widness, M.D.         
Sponsors and Collaborators
University of Iowa
National Heart, Lung, and Blood Institute (NHLBI)
Principal Investigator: John A Widness, MD University of Iowa
  More Information

No publications provided

Responsible Party: University of Iowa Identifier: NCT02077751     History of Changes
Other Study ID Numbers: 201212345, 2P01HL046925-16A1
Study First Received: February 27, 2014
Last Updated: December 23, 2014
Health Authority: United States: Food and Drug Administration

Additional relevant MeSH terms:
Growth Substances
Pharmacologic Actions
Physiological Effects of Drugs
Vitamin B Complex
Vitamins processed this record on November 25, 2015