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Driving excellence: The Centre for Blood Research and Canadian Blood Services renew collaboration to advance blood science education and training

Driving excellence: The Centre for Blood Research and Canadian Blood Services renew collaboration to advance blood science education and training


Tuesday, July 30, 2024 Kaitlyn Chuong

This blog was originally prepared by CBR communications and programs coordinator Kaitlyn Chuong and former Canadian Blood Services knowledge broker Dr. Travis Sztainert, with edits provided by Abby Wolfe. 

After more than 20 years, the Centre for Blood Research (CBR) and Canadian Blood Services are proud to share that they have renewed their collaboration agreement which supports education, training and knowledge mobilization for the next generation of trainees and researchers in blood science and transfusion at CBR.  

The collaboration agreement which is administered by Innovation and Portfolio Management at Canadian Blood Services has recently been extended for three more years to 2027. This agreement formalizes the next iteration of this long-standing partnership and is the result of continued commitment from both organizations to improve blood research.  

This partnership emerged in response to recommendations made following Canada’s public inquiry into the contaminated blood crisis of the 1980s and 1990s. Thus, to address a recognized gap in transfusion science knowledge, in 2002, a group of visionary blood researchers at the University of British Columbia (UBC) established Canada’s first interdisciplinary blood research centre — an entirely unique and valuable resource for established and emerging blood scientists. With its creation, the CBR brought together a wide range of multi-talented investigators to develop highly specialized labs to study blood and transfusion science. Since its inception, the CBR has grown to include more than 35 basic science, applied science, social science and clinical investigators in 12 departments, representing 6 faculties at UBC, with a focus on advancing knowledge of transfusion science and medicine in the lab and in the clinic.  

"We are delighted to extend our partnership with the Centre for Blood Research through 2027. This renewal highlights our shared commitment to advancing education, training, and research in transfusion science. Together, we aim to drive innovation and improve transfusion practices, ensuring a safer and more effective future for the Canadian blood system." 

Dr. Chantale Pambrun
Senior Medical Director, Innovation & Portfolio Management 

“The long-term relationship of Canadian Blood Services and the CBR has been nothing less than fantastic! By combining resources and sharing knowledge, education and research outputs, this unique partnership has resulted in more rapid and meaningful advances that are recognized locally, nationally and internationally. The entire transfusion medicine community has benefitted and will continue to do so.”  

Dr. Ed Conway
Director of the Centre for Blood Research

The partnership of Canadian Blood Services was integral to creating the Centre for Blood Research, providing essential start-up funding and continuing to support infrastructure for the centre and its training and education programs. Several Canadian Blood Services scientists are active members within the Centre for Blood Research including senior scientist Dr. Ed Pryzdial and adjunct scientists Dr. Ed Conway, Dr. Hongshen Ma and Dr. Jay Kizhakkedathu

Learn more about some of the research these scientists and members of their labs undertake in our previous R.E.D. blogs and videos:  

The CBR is grateful for Canadian Blood Services’ continuous support, without which its many educational, training and research programs would not be possible. This includes, for example, CBR’s Graduate Award Program and Summer Studentship Program, as well as the CBR's weekly seminar series and the annual Earl W. Davie and Norman Bethune symposia. 


Canadian Blood Services – Driving world-class innovation  

Through discovery, development and applied research, Canadian Blood Services drives world-class innovation in blood transfusion, cellular therapy and transplantation—bringing clarity and insight to an increasingly complex healthcare future. Our dedicated research team and extended network of partners engage in exploratory and applied research to create new knowledge, inform and enhance best practices, contribute to the development of new services and technologies, and build capacity through training and collaboration. Find out more about our research impact.   

The opinions reflected in this post are those of the author and do not necessarily reflect the opinions of Canadian Blood Services nor do they reflect the views of Health Canada or any other funding agency. 

Related blog posts


Tuesday, June 25, 2024
Guest Author

The Centre for Blood Research (CBR) Norman Bethune Symposium gathers scientists, clinicians, healthcare professionals, and trainees to discuss advancements in the field of blood research. The 12th Annual event, held in April 2024, consisted of expert talks on thalassemia, thrombocytopenia, sickle cell disease, and other bleeding disorders, demonstrating the breadth of ongoing research.


Tuesday, May 14, 2024
Abby Wolfe

The 2024 Canadian Blood Services’ Lay Science Writing Competition is open for submissions from research trainees in Canadian Blood Services’ research network until Friday, June 14, 2024. The theme this year is: “Connecting science with society”. Additional competition details available in this post!


Wednesday, February 21, 2024
Dr. Travis Sztainert

In this blog post, read about the 2023 Earl W. Davie Symposium held at the Centre for Blood Research (CBR) - a research event that brings together scientists, medical doctors, healthcare professionals, and trainees in the field of blood research and beyond.




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Canadian Blood Services discovery research lab contributes to new knowledge on neutrophils

Canadian Blood Services discovery research lab contributes to new knowledge on neutrophils


Thursday, August 29, 2024 Abby Wolfe

Dr. Donald R. Branch’s work as a discovery scientist at Canadian Blood Services focuses on immunotherapy, seeking to further enhance understanding of the cellular and molecular mechanisms involved in autoimmune diseases. Based in Toronto, Dr. Branch’s laboratory develops models of rheumatoid arthritis, Alzheimer’s disease, immune thrombocytopenia (ITP) and multiple sclerosis in mice. These models are particularly useful in examining how cells affected by these conditions respond to current therapeutic agents like intravenous immunoglobulin – a blood product made from human plasma commonly known as IVIg – and investigating potential alternative therapeutics.  

Over the years, Dr. Branch’s lab research findings have included the discovery of a special reagent that makes identification of antibodies easier by “zapping" autoantibodies,answers around unexpected side effects of IVIg therapy, and insights around recipients’ responses to bone marrow transplantation. It has also earned him numerous awards and accolades, including four from AABB, the Association for the Advancement of Blood & Biotherapies.

Dr. Don Branch, Canadian Blood Services senior scientist

New knowledge about neutrophils

Recently, contributions from Dr. Branch’s lab helped a U.K.-based team of researchers discover new information about how neutrophil function and activity is regulated. Neutrophils are a type of white blood cell that are part of the body’s normal immune response. A person’s neutrophil levels may be affected by infections as well as chronic or acute illnesses. Patients who have very low neutrophil counts and/or persistent infections may receive a boost to their neutrophil levels via granulocyte transfusion therapy. However, in some diseases, overactivation of neutrophils can also create an inflammatory environment and harm healthy tissue.

The research has been published in the high-impact scientific journal, Nature. This publication has filled a gap in knowledge about the mechanisms involved in maintaining balance between neutrophils’ infection-fighting power and inflammation-causing potential. As Dr. Branch describes: “This research by Dr. Brown and team shows that the myeloid inhibitory C-type lectin enzyme, which is known as MICL, controls neutrophil activity in rheumatoid arthritis. It is likely that MICL also regulates neutrophil activity in general. This suggests that if therapeutics can be designed to target MICL, they may be useful in controlling inflammation and infection. It is a fundamental finding that will change our understanding of the biology of neutrophils.”  

Discovery research, like the study to which Don and Ruqayyah contributed, is essential to improving patient care in the long run. New biomedical insights are essential to crafting new drugs and new therapeutic approaches in a rational way.

Dr. William (Bill) Sheffield, Canadian Blood Services senior scientist and associate director of research

Discovery research expertise leads to new collaboration  

The special mouse model that Dr. Branch’s lab uses is known as K/BxN. In this model, two mouse populations are selectively bred to produce offspring whose genetic material carry an antibody that destroys bone cartilage. An arthritis-causing serum containing this destructive antibody can then be obtained from the mice for use as a reagent in research. This process is termed “serum-transfer arthritis” and has been used by many investigators in the study of treatments that may alleviate the condition. 

Knowledge of Dr. Branch’s lab’s expertise in this area prompted a connection to the team of researchers at the Universities of Exeter and Aberdeen in the U.K. for this study. Says Dr. Branch, “In 2021, I supported a successful application to Canadian Blood Services’ Blood Efficiency Accelerator Program (BEAP) by Dr. Maria Fernandes, a researcher from  Héma-Québec who works with neutrophils. Through this collaboration, Dr. Fernandes was aware that I work on rheumatoid arthritis with K/BxN mice, and she also knew that Dr. Gordon Brown in the U.K. was looking to collaborate with a researcher in this area for some planned neutrophil research. My lab, which included postdoctoral fellow Dr. Ruqayyah Almizraq at the time, contributed to Dr. Brown’s research by providing the sera from our K/BxN mice. With this sera, Dr. Brown and his collaborators were able to induce rheumatoid arthritis and show that it could be resolved by removing the inhibition of a specific enzyme.”  

Science that is never boring

The Branch lab is currently using these same mouse models to investigate whether a recombinant protein called IgG1 Fc hexamer could be an effective replacement for IVIg in the treatment of autoimmune conditions like rheumatoid arthritis and ITP. While early results are promising, continued work is needed. In fact, back in 2018, Dr. Branch was asked in a previous R.E.D. blog post to describe what he found to be the most exciting part of science. Reflecting on the same question now, he reiterates that his response still rings true after 50 years in the field:   

The most exciting part of science is that when you do good science, you get more questions than you get answers, which means it is never boring. There is no end to imagination; new ideas, theories, experiments and discoveries occur often and provide a level of excitement to which many other professions cannot attest.

Dr. Donald (Don) Branch, Canadian Blood Services senior scientist


Canadian Blood Services – Driving world-class innovation 

Through discovery, development and applied research, Canadian Blood Services drives world-class innovation in blood transfusion, cellular therapy and transplantation—bringing clarity and insight to an increasingly complex healthcare future. Our dedicated research team and extended network of partners engage in exploratory and applied research to create new knowledge, inform and enhance best practices, contribute to the development of new services and technologies, and build capacity through training and collaboration. Find out more about our research impact.   

The opinions reflected in this post are those of the author and do not necessarily reflect the opinions of Canadian Blood Services nor do they reflect the views of Health Canada or any other funding agency. 

Related blog posts


Tuesday, March 28, 2023
Aldis Brennan

Dr. Donald Branch, Canadian Blood Services senior scientist, has received the Dale A. Smith Memorial Award for his discovery of the ZZAP reagent. This award, from the Association for the Advancement of Blood & Biotherapies (AABB), recognizes the application of technology to the practice of transfusion medicine or biotherapies.


Thursday, March 16, 2023
Beth Binnington, Senior Research Assistant

Students from the Undergraduate Pathology Alliance at Western University posed insightful questions to researchers during an interactive visit to the research laboratory of Dr. Donald Branch, Canadian Blood Services senior scientist in February 2023.


Wednesday, February 28, 2018
Dr. Kendra Hodgkinson

For this instalment of “Meet the researcher”, we met with Dr. Donald Branch, a scientist at Canadian Blood Services who studies infectious diseases and immunology. How long have you been with Canadian Blood Services? I started with the Canadian Red Cross at the Edmonton Blood Centre in December 1985...




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And the winner of the first Canadian Blood Services Dana Devine Award is…

And the winner of the first Canadian Blood Services Dana Devine Award is…


Tuesday, September 17, 2024 Aldis Brennan


Dr. Melika Loriamini! 

This new award, in honour of Dr. Dana Devine, supports early career scientists in a field related to transfusion science and medicine, blood banking and blood biotherapies. It is awarded in collaboration with the Canadian Society for Transfusion Medicine’s at their annual conference. 

“I truly appreciate the Committee for the recognition and I'm so proud that I'm the first person to win the Dana Devine Award,” Dr. Loriamini says. “When I walked into the conference, I felt like I was famous because everyone knew who I was. It was a great feeling that all the work, all the hard work, during these years that I did, it's now acknowledged, and everyone knows it.” 

Dr. Loriamini began her career in medical laboratory science in Iran, obtaining a Bachelor of Science degree before immigrating to Canada. She completed a second Bachelor’s degree, this time in biomedical science from York University, and went on to enroll in the laboratory medicine and pathobiology PhD program at the University of Toronto. While completing her education, Dr. Loriamini worked as a Medical Laboratory Technologist at LifeLabs and the William Osler Hospital. 

As part of her PhD, Dr. Loriamini worked with Canadian Blood Services Senior Scientist Dr. Donald Branch which she says allowed her to “acquire expertise in the fields of transfusion medicine and immunology and we were able to publish various articles.” 

In fact, it was Dr. Branch who first sent her the application for the award and told her he thought she was a strong candidate. 

“I want to say thanks to Dr. Branch, who was my supervisor. Actually, thank you is not enough,” Dr. Loriamini says. “He taught me how to think as a scientist and how to become a scientist. I truly appreciate him. He always trusted me.” 

Dr. Loriamini’s research focused on developing a new drug to help people who have autoimmune cytopenias — a cluster of conditions which causes your immune system to attack your own healthy blood cells. She was able to identify a potential drug which is expected to undergo clinical trials in the future.

In addition to receiving the Canadian Blood Services Dana Devine Award, Dr. Loriamini has also been recognized with the Canadian Blood Services Graduate Fellowship Program award in 2019 and 2021, the AABB Outstanding Abstract Award for Trainees as a Fellow/Post-Doctoral Student in 2022, the SGS travel award from the University of Toronto in 2022, the Best Poster for Translation/Basic research award from Hematology Academic Day in 2023, and the Best Poster for Infectious Diseases, Inflammation, and Immunology award from the 2023-Laboratory Medicine & Pathobiology Research Conference. 

Dr. Loriamini is now a Clinical Practice Leader at Humber River Health in Toronto which allows her to bring her research to a clinical setting. Congratulations Dr. Melika Loriamini! 


Canadian Blood Services – Driving world-class innovation

Through discovery, development and applied research, Canadian Blood Services drives world-class innovation in blood transfusion, cellular therapy and transplantation—bringing clarity and insight to an increasingly complex healthcare future. Our dedicated research team and extended network of partners engage in exploratory and applied research to create new knowledge, inform and enhance best practices, contribute to the development of new services and technologies, and build capacity through training and collaboration. Find out more about our research impact.  

The opinions reflected in this post are those of the author and do not necessarily reflect the opinions of Canadian Blood Services nor do they reflect the views of Health Canada or any other funding agency.

Related blog posts


Wednesday, January 24, 2024
Dr. Travis Sztainert

Read about the new Canadian Blood Services Dana Devine Award program. This blog post, written by the Centre for Blood Research (CBR) includes reflections from individuals who worked with Dr. Devine.


Thursday, June 29, 2023
Abby Wolfe

Canadian Blood Services supports capacity building in transfusion medicine through the support of research and physician trainees. In this blog, trainees reflect on their experiences attending CSTM 2023 in Montreal.


Thursday, April 02, 2020
Dr. Geraldine Walsh

Congratulations to the recipients of funding recently awarded through the Centre for Innovation’s BloodTechNet Award Program and Graduate Fellowship Program. This funding supports innovators in education and graduate students conducting research in the field of transfusion science.




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Canadian Blood Services research engineer applies network modelling techniques and mentorship skills to benefit Canada’s Lifeline

Canadian Blood Services research engineer applies network modelling techniques and mentorship skills to benefit Canada’s Lifeline


Tuesday, October 22, 2024 Dr. Emily Freeman

Dr. John Blake is a research engineer at Canadian Blood Services and a Professor in the Department of Industrial Engineering at Dalhousie University. Based in Halifax, Nova Scotia, Dr. Blake and his trainees use engineering principles and various computer-based optimization techniques to inform large scale decisions at Canadian Blood Services.  

Applying network modelling to biologics  

To some, it may be surprising to learn that there is such opportunity to integrate engineering into the health-care focused setting of Canadian Blood Services. However, as Dr. Blake explains, the same engineering principles that apply to the development and quality assurance of other products also apply to biologics such as blood, stem cells and organs. One of these classic engineering approaches currently applied to improving operations at Canadian Blood Services is network modelling.  

Network modelling is a computer-based method that creates a virtual representation of objects and their relation to each other. The resulting models are particularly useful for maintaining adaptability in the collection of blood donations, as well as the distribution and inventory management strategies that allow Canadian Blood Services to remain a safe and reliable provider of life-saving products. 

Dr. Blake making friends while walking the Camino de Santiago in Spain

Contributing to efficiency and sustainability in Canada’s Lifeline  

For Dr. Blake’s team, modelling is not about the data acquired but rather how they can turn existing data into real life change. Part of this approach is ensuring that Canadian Blood Services is asking the right questions when it comes to allocating resources. For example, Dr. Blake has worked on models to assess how changing stem cell donor recruitment will affect the number of matches for Canadian patients. By modelling things such as recruitment approaches, Dr. Blake’s work assists Canadian Blood Services to consistently identify ways to improve Canada’s Lifeline.

Recently, Dr. Blake has also been applying this method to optimize the number and location of mobile and permanent donor facilities across the nation. This redesign of the donation facility network will address the growing demand for donations by bringing Canadian Blood Services’ facilities closer to the donors. 

“I have waited my entire career for a problem of this type – it is truly a once in a lifetime opportunity.”

Dr. John Blake, Canadian Blood Services Research Engineer

Securing the future of Canada’s Lifeline  

To sustain a safe and effective blood system in Canada for years to come, network modelling and optimization is a never-ending process. This is one of the reasons that Dr. Blake is committed to securing the future of transfusion and transplantation systems by training and mentoring the next generation of engineers. In fact, seeing his former students join Canadian Blood Services and dedicate their talents to improving the future of Canada’s Lifeline is one of Dr. Blake’s proudest achievements.  

One of Dr. Blake’s former students, Matt Nelson, is now an industrial engineer at Canadian Blood Services.  

“In my role, I use systematic thinking to build and run complex models; collect and analyze the required data; produce useful results; and explain these results to non-technical leaders on a regular basis,” Matt says. Recently, Matt contributed to the launch and expansion of pathogen-reduced platelets, a new product that was implemented across Canadian Blood Services production sites starting in 2022. The implementation of pathogen-reduced platelets has provided an additional layer of safety for recipients by reducing the risk of potential transfusion-transmitted pathogens without compromising the quality of the component. Matt credited Dr. Blake in helping him develop the necessary skills he now dedicates to safeguarding Canada’s Lifeline:  

“Dr. Blake was the professor who introduced me to the uses of simulation to understand complex non-linear systems. This type of system is very common in situations that have a lot of variability – like the blood system – and simulation allows for exploration of the response of the system to changes.” 

Matt Nelson, Canadian Blood Services Industrial Engineer

Over the years, Dr. Blake’s ongoing modelling work and mentorship activities have also led to many recognitions and awards, but he is most proud of being recognized as Professor of the Year by Dalhousie Undergraduate students, and with awards for his contributions to the Canadian Operational Research Society. He has even the earned the distinction of being Dalhousie’s first engineer to be awarded grant funding from the tri-council agency, Social Sciences and Humanities Research Council (SSHRC). 

“I am proud to work on projects that have a measurable impact on people’s health and well-being,” Dr. Blake says. “I am forever grateful to Dr. Dana Devine for first giving me the opportunity to serve Canadians in this role at Canadian Blood Services.” 


Canadian Blood Services – Driving world-class innovation

Through discovery, development and applied research, Canadian Blood Services drives world-class innovation in blood transfusion, cellular therapy and transplantation—bringing clarity and insight to an increasingly complex healthcare future. Our dedicated research team and extended network of partners engage in exploratory and applied research to create new knowledge, inform and enhance best practices, contribute to the development of new services and technologies, and build capacity through training and collaboration. Find out more about our research impact.   

The opinions reflected in this post are those of the author and do not necessarily reflect the opinions of Canadian Blood Services nor do they reflect the views of Health Canada or any other funding agency.  

Related blog posts


Tuesday, March 29, 2022
Marie-Soleil Smith

This post was written by Marie-Soleil Smith, PhD Candidate in Dr. Hélène Côté’s Lab at the University of British Columbia, and edited by Dr. Geraldine Walsh, knowledge broker at Canadian Blood Services. It originally appeared on the Centre for Blood Research blog in March 2022.


Monday, January 22, 2018
Dr. Geraldine Walsh

For the latest instalment of “Meet the researcher” we chatted with Dr. John Blake, Canadian Blood Services’ research engineer and also known as “the numbers guy”.


Wednesday, June 13, 2018
Jenny Ryan

On June 5, Canadian Blood Services was honoured to accept the Canadian Operational Research Society's Omandt Solandt Award at a reception in Halifax, Nova Scotia. Michelle Rogerson, Director, Supply Chain (Atlantic), Canadian Blood Services, accepted the award on behalf of the organization. About...




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Perseverance and collaboration: How a new clinical trial aims to determine whether sex matters when matching blood products to patients

Perseverance and collaboration: How a new clinical trial aims to determine whether sex matters when matching blood products to patients


Thursday, October 31, 2024 Abby Wolfe

As the Principal Investigator for the SexMatters trial described in this blog, Dr. Mickey Zeller is an Associate Professor in the Department of Medicine at McMaster University. She is also a Medical Officer at Canadian Blood Services. 

Around 2018, Dr. Mickey Zeller's grandmother asked her a question that she couldn’t fully answer at the time. It’s a question that Dr. Zeller continues to keep top-of-mind in her roles as an Associate Professor at McMaster University and a Medical Officer at Canadian Blood Services. Having sustained a pelvic fracture at the age of 94, she asked her granddaughter, “If I need a blood transfusion, could it come from a man... and if it does, would that be safe?”. As Dr. Zeller describes, “I looked at her and, in that moment, I said, ‘Grandma, no one knows! But it’s on my list to find out!’.” 

In fact, questions about whether selecting products based on the sex of donor and recipient could improve outcomes following blood transfusions have been around for years. However, there is not yet been enough evidence to definitively answer whether this strategy would help optimize hospital and blood operator practices.

After much perseverance, collaboration with researchers across Canadian Blood Services’ extended research network, and a successful bid for CIHR funding, a research team led by Dr. Zeller is embarking on a new research journey they hope will finally provide the evidence to answer questions about whether sex matters in red blood cell transfusion.

What will the study focus on and why is it needed?

When a patient requires a transfusion of red blood cells (RBCs), the matching of product to patient is based on compatibility testing that looks at whether the blood is group A, B, AB or O, whether it is Rh positive or negative, and what other antibodies are present. Canadian Blood Services’ Rare Blood Program also helps ensure patients with specific combinations of antigens – proteins that appear on the surface of red blood cells – can be matched with appropriate blood components. Laboratory studies on donor factors such as age and sex have looked at their impact on characteristics of RBCs in terms of hematocrit, cell volume, hemoglobin content, and deformability – that is, the flexibility or “squeeze-ability” of the cells. However, currently available evidence has not demonstrated a need for red blood cells for transfusion to be matched based on the sex of either donor or recipient. 

The principal research question being posed by this study is: In adults admitted to the ICU who require RBC transfusions, do donor-recipient sex-matched RBC transfusions result in improved 30-day mortality compared with sex-mismatched RBC transfusions? Answering this question has a large potential for impact because of the substantial number of blood transfusions that occur throughout Canada every year.  

“If there was a risk identified [from the sex of the donor and recipient], even moving the needle a little bit to improve the matching of blood product to recipient could add another layer of safety to current practices,” Dr. Zeller explains.  

What had to happen to make this study possible?

While it seems like a basic question to remain unanswered, Dr. Zeller acknowledges the investments of energy, expertise, and funding to get the study to this point.  

“Sometimes these basic questions remain for a long time because it is challenging to get the funding and infrastructure in place to be able to answer them in a scientifically rigorous way; even if they’re basic-level questions, it’s only by investing that you are able to gather the evidence to answer the question.” Dr. Zeller says.

That’s part of the reason why Canadian Blood Services’ investments in networks like CTTG are important. The Canadian Transfusion Trials Group (CTTG) is funded by Canadian Blood Services with the aim of supporting and accelerating clinical trials that can inform best practices in transfusion medicine in Canada. CTTG reviewed and endorsed this SexMatters study and provided support through its development, making it the second RCT since CTTG’s inception to earn CIHR funding following participation in their review process.

"I had the opportunity to present to CTTG twice and receive feedback that improved this study design and my application to CIHR for its funding. Having it reviewed by people like Dr. Donald Arnold, Dr. Jeannie Callum, Dr. Nadine Shehata – people with world-recognized expertise in this area – really led to the success of this application,” Dr. Zeller says. “We were able to have really rich discussions on tough questions about study design and impact, including details like how we would account for patients that are pre-transfused entering the study.”

Dr. Mickey Zeller, Principal Investigator for the SexMatters clinical trial, and Dr. Donald Arnold, Co-Director of the CTTG network, discuss aspects of the newly funded clinical trial. 

Says Dr. Zeller, “Each time the application went through reviews, I could present to these colleagues to essentially say, 'Here are the criticisms it has received and here’s how I’ve handled them.' And they would provide me advice and encouragement to resubmit. It is really valuable having people across the country who are cheering for you, and who are hand-in-hand with you to celebrate your success!”

“It’s an absolute privilege to do high quality research because you have to be surrounded by an incredible group of humans. Academic curiosity and commitment by those that have mentored me have enabled me to do this work. It’s out of a generosity of spirit that people have shared their expertise with me for this work, and it takes a lot of time and effort.”

Dr. Mickey Zeller, Principal Investigator for the SexMatters trial

What other research has informed this study? 

Before this study received CIHR support, the research team undertook an exploratory analysis, a systematic review and meta-analysis, and a pilot trial which took place in 2022 across five Ontario-based hospitals to establish feasibility of the randomized controlled trial. Findings of retrospective observational studies indicated potential association between sex-mismatched transfusions and mortality, but some aspects remained unclear due to low certainty of evidence, inconsistencies or contradictory subgroup analyses in the available literature.  

Much previous research involving Canadian Blood Services researchers has also supported the need for this randomized controlled trial. This includes: 

Read the Research Unit summarizing some of MCTR’s research on blood.ca (2019)Sex-mismatched red blood cell transfusions and mortality | Canadian Blood Services

Earlier publications involving these and other researchers have also investigated the impact that blood donor age and sex have on outcomes for transfusion recipients, summarized evidence related to sex-matched versus mismatched transfusions and mortality, and the biological mechanisms implicated in adverse outcomes of sex-mismatched transfusions. There is still room for more investigation to build on this previously completed research, and that aligns with Canadian Blood Services' emphasis on the importance of research that spans the continuum from bench-to-bedside to continuously improve our processes, products and services. As Dr. Zeller describes: “There are biological studies and retrospective data, but we only have one existing RCT. There’s a real importance to pursue a prospective, RCT so we can look forward as opposed to looking back.”

“As every blood donor is unique, the challenge we have is to understand which donor-specific factors can be better matched to improve patient outcomes.  Differences in the biology of blood cells from male and female blood donors are well defined, but what we do not understand is if these differences affect health outcomes in transfused patients.  This is very important question that the SexMatters clinical trial is proposing to address.”

Dr. Jason Acker, Co-Investigator in the SexMatters trial

How will the study work and why the focus on transfusions in the ICU?  

Focusing on transfusions in the ICU is a significant distinguishing feature of this study. The iTADS trial was completed as a multicentre, double-blind trial, but it looked at mortality rates across the whole hospital. This new trial will look at transfusions received by patients in the intensive care unit (ICU) specifically. 

“In the hospital, we know that mortality rate is much higher in a transfused ICU patient compared to a patient in another part of the hospital,” Dr. Zeller says. “We’ve chosen to focus this study on the sickest population of patients – those in the ICU – with the idea that any impact will be seen most prominently in this group. The analysis will include consideration to dosage so we can adjust for the specific number of units transfused to each patient.” 

The study is also designed so that participants will not know whether a blood transfusion is matched or mismatched based on the sex of donor or recipient – a method used to prevent potential bias in the trial. 

“At the hospital, you always get a list with each shipment of blood product that says what units you have received from the blood operator”, Dr. Zeller explains. “As part of this study’s protocol, participating hospitals will see an additional colour-coding noted on this inventory, and this is what will be used when it comes time for us to do our analysis.”  

Who could benefit from this knowledge and what are the next steps?  

Dr. Zeller is glad to have Canadian Blood Services involved in this research, acknowledging that changing policy related to matching of blood products would be a significant change for hospitals and blood suppliers, requiring strong evidence from RCTs like this one.  

“This study will help to inform health-care professionals who prescribe and administer blood products, along with patients, donors, and the blood operator, too. One of the important questions if it does turn out to have a significant difference is ‘Then what?’ We already divide our inventory by group (ABO) and by Rh status (+/-). Would the need to be matching by sex further impact inventory? We don’t know yet, but that’s why it’s important to have the blood supplier involved,” Dr. Zeller says. 

The study will require a total sample size of approximately 11,000 patients across an expected nine hospital sites in Ontario.  

“We’ve designed this study to be very efficient; it’s got components of what would be considered a pragmatic study design,” Dr. Zeller says. “In terms of the products, Canadian Blood Services does not have to provide anything different than they already do for this study (other than the colour-coded markers) and we will use electronic capture to pull data, so we don’t need to collect study information at bedside. These were processes leveraged from the earlier iTADS study as the iTADS research team was very supportive of us learning from what they did.”  

“Whether transfusions should be matched for donor sex is a question that has been percolating in people’s minds for many years. Dr. Zeller has had the courage and perseverance to tackle this important question, which could have important policy implications.  I’m excited for Dr. Zeller to embark on this journey and advance knowledge on best transfusion practices.”  

Dr. Donald Arnold, Co-Director of CTTG and Co-Investigator in the SexMatters trial 


Canadian Blood Services – Driving world-class innovation 

Through discovery, development and applied research, Canadian Blood Services drives world-class innovation in blood transfusion, cellular therapy and transplantation—bringing clarity and insight to an increasingly complex healthcare future. Our dedicated research team and extended network of partners engage in exploratory and applied research to create new knowledge, inform and enhance best practices, contribute to the development of new services and technologies, and build capacity through training and collaboration. Find out more about our research impact.   

The opinions reflected in this post are those of the author and do not necessarily reflect the opinions of Canadian Blood Services nor do they reflect the views of Health Canada or any other funding agency.  

Related blog posts


Monday, December 23, 2019
Tricia Abe

When doctors select compatible red blood cell units for transfusion into a patient, they don’t consider the sex of the patient and whether the donor is the same (sex-matched) or opposite sex (sex-mismatched). But a study led by Dr. Michelle Zeller, Canadian Blood Services medical officer and assistant professor in the department of medicine at McMaster University, suggests that the role of donor sex in red blood cell compatibility may be worth a closer look.


Wednesday, October 04, 2017
Dr. Jeannie Callum

In this six-part series, Dr. Jeannie Callum, a hospital-based transfusion specialist, shares her real-life experience witnessing the impact of blood donation on patient lives. She provides some fascinating insight into blood transfusion, past and present, and emphasizes the need for male donors and why some donors may be safer for patients. Read the complete series here.


Tuesday, September 26, 2023
Dr. Travis Sztainert

Recent research involving Canadian Blood Services researchers highlights the relationship between donor age and the quality of blood products like red blood cells, while considering the complex interplay between storage conditions, oxidative stress, and genetic factors. Though the clinical implications remain uncertain, these findings underscore the importance of ongoing research in optimizing blood storage practices and continuing to improve the efficacy of blood transfusions for patients in need.




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Maple Helps Hiab Simplify Their Crane Operation

Hiab recently used Maple to improve safety measures and ease burden on crane operators




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Electric Potential Near a Lightning Rod

The electric field around a narrow conical point can be very high, and such a behavior is the reason for the effectiveness of lightning rods. We use Maple's LegendreP function to visualize the electric potential near a lightning rod.




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U.S. OKs $425 Million In More Weapons For Ukraine, As North Korea Sends Troops To Support Russia

The Biden administration has approved a new $425 million weapons aid package for Ukraine, which includes providing Kyiv with additional munitions, counter-drone equipment and Stryker vehicles.  The new security assistance […]




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Australia Cancels Satellite Effort With Lockheed Martin As Space Tech Advances

The Australian Ministry of Defence on Nov. 4 terminated its procurement activity with Lockheed Martin [LMT] for a single communications satellite in favor of pursuing multiple spacecraft that could provide […]




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Top Defense Appropriators, NatSec Lawmakers Locked In Key Races Heading Into Election Day

The Senate and House’s top defense appropriators are both facing tough election day matchups that could help determine the majority in either chamber and potentially reshape key “cardinal” spots atop […]




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BWX Technologies To Acquire Specialty Materials Business From L3Harris Technologies

BWX Technologies [BWXT] has agreed to acquire a specialty materials and manufacturing business from L3Harris Technologies ’ [LHX] Aerojet Rocketdyne segment for $100 million. The Aerojet Ordnance Tennessee, Inc. (AOT) […]




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Kongsberg Nabs Potential $329 Million Award To Build Turrets For Marines’ ACV-30

The Marine Corps has awarded Norway’s Kongsberg Defence & Aerospace a contract worth up to $329 million to build medium caliber remotely-operated weapon systems for the turreted variant of the […]




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U.S. Space Command’s Commercial Integration Cell to Grow Beyond 17 Companies

The U.S. Space Force said on Wednesday that it has added five companies to the U.S. Space Command Combined Space Operations Center’s (CSpOC) Commercial Integration Cell (CIC) at Vandenberg Space […]




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Army Awards Repkon USA Potential $435 Million Deal To Build New TNT Factory In Kentucky

The Army has awarded Repkon USA a contract worth up to $435 million to build a new TNT production facility in Graham, Kentucky, the service said on Friday. The contract […]




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India’s JSW Group To Invest $90 Million In Shield AI, Manufacture V-BATs

Indian conglomerate JSW Group will invest $90 million in U.S. startup Shield AI over the next two years to license and manufacture the small company’s V-BAT unmanned aircraft system (UAS) […]




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House’s Top Defense Appropriator Calvert Projected To Win Reelection

Rep. Ken Calvert, the House’s top defense appropriator, is projected to narrowly win his reelection bid following a competitive race. While final control of the House in the next Congress […]




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Nov 18 - JALT2024: 50th Annual International Conference on Language Teaching and Learning and Educational Materials Exhibition

JALT (The Annual International Conference of the Japan Association for Language Teaching). November 18 (Mon), 9:00-16:00 in Shizuoka. Call for proposals ends March 10th, 2024.




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Nov 17 - JALT2024: 50th Annual International Conference on Language Teaching and Learning and Educational Materials Exhibition

JALT (The Annual International Conference of the Japan Association for Language Teaching). November 17 (Sun), 9:00-19:00 in Shizuoka. Call for proposals ends March 10th, 2024.




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Nov 16 - JALT2024: 50th Annual International Conference on Language Teaching and Learning and Educational Materials Exhibition

JALT (The Annual International Conference of the Japan Association for Language Teaching). November 16 (Sat), 9:00-19:00 in Shizuoka. Call for proposals ends March 10th, 2024.




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Asian Conference for Innovation in Education (ACIE 2025)

ACIE (Asian Conference for Innovation in Education). March 3 (Mon) - 4 (Tue) 2025, at Osaka Central Public Hall, Osaka.





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TH10 - Respiratory Movements and the Diaphragm

The tenth in our series on the thorax describes the Respiratory Movements and the Diaphragm.
See our website for accompanying diagrams




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Hunter Industrial Unveils New Website

NASHVILLE, Tenn. — Hunter Industrial Fans, the industrial division of Hunter Fan Company, has launched a new website designed to enhance the online consumer experience. Hunter’s revamped website includes new features designed to make all product information readily available to both consumers and distributors.  




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California Details Decarbonization Plan

California is usually at the forefront of most environmental movements in the U.S., and its plan to aggressively reduce — and ultimately eliminate — carbon emissions is no different.




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Green Builder Media Names Trane as 2022 HVAC Brand Leader

Trane has been named Green Builder Media’s prestigious HVAC Brand Leader for 2022 and was recognized for its sustainable solutions and focus on efficient indoor comfort.




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California Launches IRA Rebate Program

Owners and agents of multifamily buildings in California may apply now for rebates on heat-pump heating and cooling units. The owners of single-family homes in the state will be able to apply for rebates for new heat pumps for space heating and cooling within the next several weeks.




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New CEO Named at Commercial HVACR Maintenance Firm

Jason Cocco, formerly the president and chief revenue officer at BFC Solutions, succeeded Phil Whitaker as CEO last month.




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Lennox Commercial: Renewable Energy for Commercial HVAC

The SunSource® Commercial Energy System is the only commercial HVAC system to integrate directly with solar power by collecting free, clean energy from the sun and sending it directly to Lennox’ Energence® rooftop unit.




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Automation Components Inc.: Low Differential Pressure Transmitter

ACI’s compact sized, A/MLP Series Pressure Transmitter is designed specifically for panel mount, duct and OEM installations. Pressure ranges from +/- 0.5 inch to +/- 20 inches of water column.




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Allied Commercial: Rooftop Matchup App

With instant access to over 4,000 light commercial RTU’s, the Allied Crossover App quickly identifies the best Allied Commercial™ matchup for your equipment replacement needs.




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GreenStar Energy Systems – serving YOU: America’s HVAC Installers, Contractors, Technicians and Dealers

We guarantee we’ll save GreenStar Alliance members thousands on equipment costs. We are also here to help streamline your business, taking care of documentation and shipping for you as well! Learn more by calling 888-249-HVAC, or go to www.GreenStarAlliance.com!




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Cooper Oates Air Conditioning Names Biagioni General Manager of Service Division

Cooper Oates Air Conditioning (COAC), a mechanical contractor serving northern California, has announced the appointment of James Biagioni as general manager, Service Division. Biagioni will be responsible for all operational aspects of the Service Division.




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Hawaiian Association Opens Scholarship Applications

The Contractors Association of Kauai (CAK is offering multiple scholarships to Kauai residents seeking a career in a construction-related field of study.




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Customer Service Lessons a Veterinarian Taught Me

It’s easy to forget that what is a regular day on the job for you is a significant event in the life of your customer.




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How to Diagnose a Thermostatic Expansion Valve Failure

This article will hopefully save the lives of a few TXVs and the pocketbooks of some customers.




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The Beneficial Properties of Small Diameter Copper Tube for Heat Exchangers

Manufacturers are designing a new generation of heat exchangers with more advantages over present designs.




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Net-Zero Prefab Homes Feature Radiant Systems, High-Efficiency HVAC

Transcend Communities are net zero, all-electric, healthy, resilient, connected, solar-powered, and cost-effective homes located in mixed-use communities — and an in-floor radiant system that will heat and cool both air and water is pivotal to this.




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Project Files: Episode 42 — Amalie Arena IAQ Update

Pure Air Control Services recently completed an IAQ project that helped fans and hockey players at the Stanley Cup Playoffs breathe easy at Tampa Bay’s Amalie Arena.




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Experts Expect Interest in IAQ to Continue after COVID

The coronavirus pandemic increased consumer awareness of IAQ to its highest level. The question now is, will this elevated interest in IAQ continue after the pandemic ends?




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RGF Global Campaign Encourages IAQ Awareness

Although RGF manufactures air, food, and water purification systems, the company’s primary focus for this year’s Expo is air, especially given the recent increase in IAQ awareness.




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UVDI Awarded Agreement for UV-C IAQ Technology with Premier Inc.

UltraViolet Devices Inc. announced that it has been awarded a group purchasing agreement with Premier Inc. in the category of Indoor Air Quality products.




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Pandemic Drives Era of Residential IAQ Awareness

The global pandemic caused many people to reevaluate how they had been living their lives, and when it came to life at home, indoor air quality (IAQ) became a top priority.




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Modine Offers Free IAQ Upgrades to Schools

Modine's offer to schools of Needlepoint Bipolar Ionization Technology was prompted by recent Canadian wildfires, which have created smoke that has blanketed significant portions of the U.S.




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Trane to Adjust Prices on Residential HVAC Equipment

The residential division at Trane Technologies announced that some prices will go up by as much as 5% while others will decrease or remain unchanged. The adjustments take effect in January.




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RenewAire Wins Brilliance Award for its ERVs

The innovations of the hard-wired EV Premium Series align with the Brilliance Awards’ theme of automation technology.




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WaterFurnace to Hike Prices of Commercial Equipment

The move is a reaction to rising refrigerant and overall logistical costs, and the increases will take effect Jan. 1, 2024, a press release from WaterFurnace said.




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Lennox to Increase Prices on Residential Equipment

Lennox Industries plans to increase prices on residential equipment and accessories by up to 10% beginning Monday, Feb. 5.





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Report: Commercial Contractor Confidence Nearly Doubled Since 2023

Just 3% of commercial contractors were pessimistic about the upcoming year in 2024, compared to 22% in 2023.




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Dehumidification Plays a Crucial Role in Cannabis Crop Production

Grow rooms are a prominent example of the potential and the challenges of indoor agriculture.




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Humidification Control Is Critical in Residential, Commercial Settings

Humidity control makes up an important facet of indoor air quality, a facet that includes reducing airborne viruses but extends far beyond it.