Examining the effects of O blood products on patients with Myelodysplastic Syndrome

Revisiting the Universal Donor: Does Exposure to O Blood Products Affect Patient Outcomes

Not applicable Interventional McMaster University · NCT04859218

This study is testing if using O blood products for transfusions helps or harms patients with Myelodysplastic Syndrome who need regular blood transfusions.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment30 (estimated)
Ages18 Years to 120 Years
SexAll
SponsorMcMaster University Academic / other
Drugs / interventionschemotherapy
Locations1 site (Hamilton, Ontario)
Trial IDNCT04859218 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates whether transfusions of O blood products impact patient outcomes in individuals diagnosed with Myelodysplastic Syndrome (MDS). The study focuses on patients who require regular red blood cell transfusions and aims to determine if receiving ABO non-identical red blood cells leads to adverse effects compared to ABO identical transfusions. By analyzing patient data and outcomes, the researchers hope to clarify the safety and efficacy of current transfusion practices for MDS patients.

Who should consider this trial

Good fit: Ideal candidates for this study are adults aged 18 and older with a diagnosis of MDS who require regular red blood cell transfusions and have blood groups A, B, or AB.

Not a fit: Patients with blood group O or those requiring special transfusion products due to previous reactions may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved transfusion protocols that enhance survival and reduce complications for patients with Myelodysplastic Syndrome.

How similar studies have performed: Previous studies have indicated potential risks associated with ABO non-identical transfusions, suggesting that this approach may yield significant insights into transfusion safety.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Age ≥ 18 years of age
2. Diagnosis of MDS (Myelodysplastic syndrome ) without leukemia (IPSS-R classified or physician indicated either low-risk or intermediate-1)
3. Stable disease (as assessed by the patient's physician using MDS Stability Assessment Algorithm)
4. Blood group A, B, or AB
5. Requiring 2 RBC units at least every 6 weeks or less
6. Receiving transfusions in an outpatient setting

Exclusion Criteria:

1. Unable to provide informed consent
2. Blood group O
3. Clinical requirement for special products because of reactions (e.g. washed or volume-reduced)

Where this trial is running

Hamilton, Ontario

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Myelodysplastic SyndromeMDSmyeloid clonal disorder
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.