Whole Blood Donation and Leukoreduction
Conditions
Keywords
Red Blood Cells
Brief summary
The primary goal of Hemanext. is to improve red cell storage through novel storage methods. Based on our review of the pertinent literature, there is substantial evidence suggesting that prolonged exposure to oxygen during storage results in oxidative damage to the red blood cells leading to decreased therapeutic potential. Therefore, removal of oxygen from red blood cell products prior to storage has potential to preserve the cells in a more physiologically relevant state. Currently, Hemanext has focused on the design and development of a dual compartment bag system designated as the Hemanext Red Blood Cell Processing System. After standard processing of donated whole blood units into leukoreduced packed red blood cells (LR-RBCs) with the appropriate additive solutions, the LR-RBCs would then be placed in the oxygen reduction bag (ORB) which allows for the rapid diffusion of oxygen out of the blood, through a sterile, oxygen-permeable membrane, and into iron-based oxygen sorbents. After processing, the blood is transferred again from the ORB into the Hemanext storage bag (HSB) which will preserve the anaerobic state of the LR-RBC product for the duration of cold storage. Hemanext has conducted preliminary storage tests to ascertain the effects of anaerobic storage on overall blood health in various storage solutions. The research team has focused primarily on percent hemolysis, which is mandated by the FDA to remain below 1% for the duration of storage, as well as ATP and 2,3-DPG levels.
Detailed description
In vitro and in vivo performance of O2/CO2 reduced red blood cells produced with the Hemanext System will be used to demonstrate the acceptability the final product for clearance. To accomplish this, the study will require a total of 100 studyevaluable donors. completing the study. The study entails a randomized, paired, 2-x-2 crossover design where every study donor (n = 10093) evaluable study donors who completes the study will donate a total of two whole blood units with individual units being donated at least 56 days (8 weeks) apart. One unit will be used as the test and the other unit will be used for the control. The order in which the IP and the CP will be used to collect, filter and store the whole blood and appropriate blood products (within the context of the crossover design) will be randomized.
Interventions
DEVICEHemanext Red Blood Cell Processing System
Leukoreduced red blood cell product from donors in the Investigational Product arm will be processed in the Hemanext Oxygen Reduction Bag for 3 hours and then transferred to the Hemanext Storage Bag and stored for 42 days at 1-6°C.
Sponsors
Hemanext
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Study donor must be ≥ 18 years of age. * Study donor must be ≥ 110 pounds. * Study donor's body temperature must be ≤ 37.5°C / 99.5°F (oral). * Study donor's hemoglobin must be ≥12.5 g/dL if female and ≥13.0 g/dL if male. * Study donor's hematocrit must be ≥ 38% if female and ≥39% if male.Study participants must meet EITHER hemoglobin or hematocrit criteria. * Study donor must meet all criteria per respective site's Research Blood Donation Record (BDR). * Study donor's most recent single RBC unit donation must have been ≥56 days prior to study donation. * Study donor's most recent double RBC unit donation must have been ≥ 112 days prior to study donation. * Study donor must have consented to study participation by reviewing and having expressed understanding the site-respective IRB-approved informed consent form prior to undergoing any study related procedures. 21 CFR 50 * Study donor's testing results from collected blood does not indicate a risk of transfusion-transmitted disease (TTD)\*. * Study donors must agree to report adverse events from the time of signing the informed consent to twenty-four hours following the end of their active study involvement. * Female study donors must not be pregnant, expected to be pregnant or breastfeeding. * Female donors who participate in the in vivo portion of the study: Women of child-bearing age must not be pregnant as determined by a negative pregnancy test prior to each re-infusion. If acceptable by local procedures, post-menopausal or surgically sterile women may be exempt from the pregnancy testing requirement.
Exclusion criteria
* Study donor is \< 18 years of age. * Study donor \< 110 pounds. * Study donor's body temperature is \> 37.5°C / 99.5°F (oral). * Study donor's hemoglobin is \< 12.5 g/dL if female and \< 13.0 g/dL if male. * Study donor's hematocrit is \< 38% if female and \< 39% if male. * Study donor does not meet all criteria per respective site's Research Blood Donation Record (BDR). * Study donor's most recent single RBC unit donation was \< 56 days prior to study donation. * Study donor's most recent double RBC unit donation was \< 112 days prior to study donation. * Study donor has not consented to study participation. * Study donor's testing results from collected blood does indicate a risk of transfusion-transmitted disease (TTD)\*. * Female donors who participate in the in vivo portion of the study: study donor is pregnant, expected to be pregnant or breastfeeding.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| % of Red Blood Cells With Hemolysis | On day 42 of storage | Percentage of packed Red Blood Cell units with hemolysis at day 42 of storage. |
| Dual Label 24 Hour In Vivo % Recovery of Red Blood Cells | Day 42 of storage | The mean 24-hour, post-transfusion, in vivo red blood cell recovery. |
| % Red Blood Cells Recovered Post-Filtration | Post-Filtration on Day 0 | Percentage of red blood cells recovered after the filtration process. |
Countries
United States
Participant flow
Pre-assignment details
Participants were immediately assigned to a group upon enrollment.
Participants by arm
| Arm | Count |
|---|---|
| All Study Donors This study was a crossover design and all Donors donated units to both the Investigation and Control arms so the Baseline Measures for all donors are combined here irrespective of their randomization. | 100 |
| Total | 100 |
Baseline characteristics
| Characteristic | All Study Donors |
|---|---|
| Age, Continuous | 47.0 years STANDARD_DEVIATION 15 |
| Ethnicity (NIH/OMB) Hispanic or Latino | 2 Participants |
| Ethnicity (NIH/OMB) Not Hispanic or Latino | 98 Participants |
| Ethnicity (NIH/OMB) Unknown or Not Reported | 0 Participants |
| Race (NIH/OMB) American Indian or Alaska Native | 0 Participants |
| Race (NIH/OMB) Asian | 1 Participants |
| Race (NIH/OMB) Black or African American | 10 Participants |
| Race (NIH/OMB) More than one race | 0 Participants |
| Race (NIH/OMB) Native Hawaiian or Other Pacific Islander | 1 Participants |
| Race (NIH/OMB) Unknown or Not Reported | 0 Participants |
| Race (NIH/OMB) White | 88 Participants |
| Sex: Female, Male Female | 47 Participants |
| Sex: Female, Male Male | 53 Participants |
Adverse events
| Event type | EG000 affected / at risk | EG001 affected / at risk |
|---|---|---|
| deaths Total, all-cause mortality | 0 / 100 | 0 / 100 |
| other Total, other adverse events | 9 / 100 | 9 / 100 |
| serious Total, serious adverse events | 1 / 100 | 1 / 100 |
Outcome results
Primary
Dual Label 24 Hour In Vivo % Recovery of Red Blood Cells
The mean 24-hour, post-transfusion, in vivo red blood cell recovery.
Time frame: Day 42 of storage
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Investigational Product | Dual Label 24 Hour In Vivo % Recovery of Red Blood Cells | 89.3 % Recovery of Red Blood Cells | Standard Deviation 5.81 |
| Control Product | Dual Label 24 Hour In Vivo % Recovery of Red Blood Cells | 85.8 % Recovery of Red Blood Cells | Standard Deviation 6.12 |
Primary
% of Red Blood Cells With Hemolysis
Percentage of packed Red Blood Cell units with hemolysis at day 42 of storage.
Time frame: On day 42 of storage
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Investigational Product | % of Red Blood Cells With Hemolysis | 0.29 % of Red Blood Cells with Hemolysis | Standard Deviation 0.168 |
| Control Product | % of Red Blood Cells With Hemolysis | 0.29 % of Red Blood Cells with Hemolysis | Standard Deviation 0.152 |
Primary
% Red Blood Cells Recovered Post-Filtration
Percentage of red blood cells recovered after the filtration process.
Time frame: Post-Filtration on Day 0
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Investigational Product | % Red Blood Cells Recovered Post-Filtration | 92.3 % of Red Blood Cells Recovered | Standard Deviation 1.9 |
| Control Product | % Red Blood Cells Recovered Post-Filtration | 91.1 % of Red Blood Cells Recovered | Standard Deviation 4.31 |