Mortality After Transfusion of Ever-pregnant Donor Red Blood Cells

Anemia Clinical Trial

— MATER  

Official title:

Mortality After Transfusion of Ever-pregnant Donor Red Blood Cells

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT06176105
• Other study ID #: PPOC 18-03
• Status: Completed
• Start date: October 1, 2019
• Est. completion date: October 1, 2020

Study information

• Verified date: March 2019
• Source: Sanquin-LUMC J.J van Rood Center for Clinical Transfusion Research
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

The MATER study is an observational cohort study on first ever transfusion recipients in six hospitals in the Netherlands, with information collected on both donor and patient characteristics. We aim to further specify which combination of characteristics of both donors and patients determine the increased risk of mortality after blood transfusions.

Description:

Background In 2011, a link between donor sex and death of transfusion recipients was observed in red blood cell transfusions (Middelburg et al., Vox Sanquinis, 2011). This was further investigated by Caram-Deelder et al., who showed the transfusion of red blood cells from ever-pregnant donors was associated with higher mortality in young men (with age up to 50 years) (Caram-Deelder et al., JAMA, 2017). However, the biological mechanisms explaining this association remained unclear. More data is needed to be able to specify which combination of characteristics of both donors and patients determines this increased risk of mortality after red blood cell transfusions. Therefore, the MATER study was initiated: 'Mortality After Transfusion of Ever-pregnant donor Red blood cells'. Here, we aim to validate previous research on the association between donor pregnancy history and transfusion recipient mortality.

Rationale Red blood cells constitute the biggest part of the blood supply. They are currently transfused without consideration of the sex of the blood donor and the recipient. Recent evidence shows such a policy to be associated with increased mortality in male recipients of red blood cells from female donors with a history of pregnancy. This project aims to find clues for the biological mechanism behind this association. This knowledge will allow for more personalized future transfusion strategies that will minimize both side effects and associated mortality of recipients of red blood cell transfusions.

Methodology First-ever transfusion recipients in the Netherlands between 2005 and 2018 which were performed in the hospitals participating in the R-FACT study will be included in this study. All blood donations and the corresponding donors linked to these recipients will be included in this study. Cox regression analysis will be used to assess the effect of donor pregnancy on transfusion recipient mortality. This analysis method allows modelling the relation between exposure (donor pregnancy history), outcome (mortality), and confounders (e.g. total number of transfusions, year of transfusion, ABO and Rh blood type, sex of the patient, and hospital) taking into account that exposure and confounders vary over time. Pregnancy history will be investigated as number of pregnancies, time since last pregnancy, different partners and type of pregnancy (i.e. boy versus girl pregnancies, outcome of pregnancy). The hazard ratio will be presented for exposure to blood products with different characteristics, stratified by patient age, sex and (if possible) transfusion indication. Effect modification by storage time will also be investigated.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 101000
• Est. completion date: October 1, 2020
• Est. primary completion date: October 1, 2020
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: N/A and older

Eligibility

Inclusion Criteria:

• have received a first transfusion between 20-03-2004 and 31-12-2018 in one of the hospitals participating in the R-FACT study OR

• have donated blood for a blood product which was used in one of the hospitals participating in the R-FACT study between 20-03-2004 and 31-12-2018

Exclusion Criteria:

• N.A.

Related Conditions & MeSH terms

• Anemia

Locations

Country	Name	City	State
Netherlands	Sanquin blood bank	Amsterdam

Sponsors (1)

Lead Sponsor	Collaborator
Sanquin-LUMC J.J van Rood Center for Clinical Transfusion Research

Country where clinical trial is conducted

Netherlands, 

References & Publications (2)

Caram-Deelder C, Kreuger AL, Evers D, de Vooght KMK, van de Kerkhof D, Visser O, Pequeriaux NCV, Hudig F, Zwaginga JJ, van der Bom JG, Middelburg RA. Association of Blood Transfusion From Female Donors With and Without a History of Pregnancy With Mortality Among Male and Female Transfusion Recipients. JAMA. 2017 Oct 17;318(15):1471-1478. doi: 10.1001/jama.2017.14825. Erratum In: JAMA. 2018 Feb 20;319(7):724. — View Citation

Middelburg RA, Briet E, van der Bom JG. Mortality after transfusions, relation to donor sex. Vox Sang. 2011 Oct;101(3):221-9. doi: 10.1111/j.1423-0410.2011.01487.x. Epub 2011 Apr 8. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Mortality	In total, this cohort contains data on over 100,000 first-ever transfusion recipients and their received transfusions from six hospitals in the Netherlands, with information collected on both donor and patient characteristics.	2015-2018