allogeneic haematopoietic cell transplantation
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2022 ◽  
Vol 9 ◽  
Author(s):  
Asaf Yanir ◽  
Ansgar Schulz ◽  
Anita Lawitschka ◽  
Stefan Nierkens ◽  
Matthias Eyrich

Immune reconstitution (IR) after allogeneic haematopoietic cell transplantation (HCT) represents a central determinant of the clinical post-transplant course, since the majority of transplant-related outcome parameters such as graft-vs.-host disease (GvHD), infectious complications, and relapse are related to the velocity, quantity and quality of immune cell recovery. Younger age at transplant has been identified as the most important positive prognostic factor for favourable IR post-transplant and, indeed, accelerated immune cell recovery in children is most likely the pivotal contributing factor to lower incidences of GvHD and infectious complications in paediatric allogeneic HCT. Although our knowledge about the mechanisms of IR has significantly increased over the recent years, strategies to influence IR are just evolving. In this review, we will discuss different patterns of IR during various time points post-transplant and their impact on outcome. Besides IR patterns and cellular phenotypes, recovery of antigen-specific immune cells, for example virus-specific T cells, has recently gained increasing interest, as certain threshold levels of antigen-specific T cells seem to confer protection against severe viral disease courses. In contrast, the association between IR and a possible graft-vs. leukaemia effect is less well-understood. Finally, we will present current concepts of how to improve IR and how this could change transplant procedures in the near future.


2021 ◽  
pp. 94-104
Author(s):  
Livia Giannoni ◽  
Emanuele Angelucci

This article will review recent and forthcoming advances in the treatment of thalassaemia. Prognosis of thalassaemia has dramatically improved in the last 50 years with the development of regular and safe blood transfusions and iron chelation. Almost 20 years ago, development of oral chelators, and more recently the improvement in the knowledge and understanding of iron pathophysiology, have led to optimal iron toxicity prevention and treatment. These considerable advancements in medical therapy have transformed transfusion-dependent thalassaemia from a lethal childhood disease to a chronic disease with an open prognosis, even in those individuals over 50 years of age, and with the disease being, in some instances, curable. In the 1980s, the introduction of allogeneic haematopoietic cell transplantation provided the possibility of curing the congenital disease for the first time. More recent developments include an improved understanding of erythropoiesis, which led to the development of new erythroid-stimulating factors effective in thalassaemia, an expansion of donor pull for transplantation, and the approach of the long-term promised gene therapy in clinical practice. Moreover, ongoing trials of gene editing and agents modulating iron metabolism promise new improvements. Today, patients with thalassaemia have several weapons in their therapeutic arsenal and, hopefully, will have much more to come. As usual in medical practice, new advancements provide new challenges for the medical community, and it is the duty of this community to clearly understand the benefits and challenges of any new approach in order to provide the highest clinical benefit to patients.


Author(s):  
Malvi Savani ◽  
Rémy Dulery ◽  
Abdul Hamid Bazarbachi ◽  
Razan Mohty ◽  
Eolia Brissot ◽  
...  

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