Neutrophil defects and deficiencies

On 5 November 2020 Annemarie van de Geer will defend her PhD thesis  'Neutrophil defects and deficiencies'. She investigated both inborn and acquired neutrophil defects, as well as the functionality of and indications for granulocyte transfusions, used as a last resort treatment in patients with refractory infections and neutropenia or neutrophil dysfunction.

Neutrophilic granulocytes (neutrophils) are major players in the innate immune system, especially in the defense against bacteria and fungi. Neutrophils are the most abundant white blood cell (leukocyte) in the circulation and are typically the first leukocyte to be recruited to the site of infection or inflammation.

In this thesis we have investigated both inborn and acquired neutrophil defects, which still cause considerable morbidity and mortality despite advances in medical care. We have tried to gain more insight in characteristics of one specific inborn neutrophil functional disorder, named p40^phox deficient chronic granulomatous disease (CGD), as well as in the pathophysiology of the autoreactivity observed frequently in CGD. We have also investigated the functionality of and indications for granulocyte transfusions (GTX), used as a last resort treatment in patients with refractory infections and neutropenia or neutrophil dysfunction.

Finally, we have conducted a clinical study in patients with severe neutropenia as a result of chemotherapy. We assessed the value of different laboratory biomarkers for early identification of patients with febrile neutropenia and a high risk for infection-related IC admission and death.

Promotores:
Prof TW Kuijpers MD PhD and prof SS Zeerleder MD PhD

Venue:
Universiteit van Amsterdam, Agnietenkapel and online