BACKGROUND AND AIMS
Background: the roots of immune-related adverse events inequalities between female and male cancer patients
In patients with cancer, the increasing use of immunotherapic treatments is associated with immune-related adverse events (irAEs) caused by non-specific activation of the immune system. IrAEs usually develop within the first few weeks to 6 months after treatment initiation; however, they can also present after cessation of immunotherapic treatment. Sex influences the adaptive immunity, and may influence irAEs types, frequency and severity. Accumulating evidences support the existence of sex-driven differences in immune responses as potential factors contributing to disease outcome and response to therapy. Together with genetic and biological differences, the roots of irAEs inequalities between female and male patients could also be linked to psycho-social and behavioral determinants.
The study aims
This is a multicenter observational prospective clinical study aimed at investigating the inequalities between female (F) and male (M) cancer patients in the development of irAEs associated with immunotherapy treatment. The evaluation of the differences in terms of irAEs incidence concerning biological aspects will be integrated by the exploration of their gender dimension.
In common feeling, sex and gender represent the same concept, that is the traditional division of individuals into F and M defined by differential organization of chromosomes, reproductive organs, and sex steroid levels. Sex influences the adaptive immunity, and may influence irAEs types, frequency and severity. However, if we go beyond these aspects, which characterize “sex”, we can see that the differences between individuals are also characterized by behaviors and relationships that are the product of the culture and sociality. This is what is called “gender”, i.e. the process of social and cultural construction that determines the behaviors that give life to the status of an individual. Gender is therefore learned and not innate. Sex and gender do not constitute two opposing but interdependent dimensions: the process of determining gender identity is triggered on biological characters. Along with sex differences, the study will also explore the irAEs incidence in relation to psychosocial and behavioral determinants, such as: marital status, ethnicity, employment status, level of education, living arrangement, income, smoking condition, alcohol consumption, levels of physical activity, obesity, dietary habits, distress and health status (the latter measured by means of appropriate questionnaires).
The study will also perform gene-expression analysis (blood samples will be taken in order to identify immune-related genes associated with the development of irAEs), SNPs analysis (blood samples will be taken in order to perform a preliminary genome wide association study for the identification of germline variations associated with the development of irAEs. with the hypothesis that the individual’s genetic makeup may be related to irAEs), microbioma analysis (stool collection will be performed to analyze gut microbiota aiming at performing RNA/DNA sequencing analysis for identifying components associated with the development of irAEs).
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 741874.
More information on the http://gender-net-plus.eu/
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