Biological Bank for the Patients Followed in a Constitutive Reference Center for Autoimmune Cytopenia
Biological Bank for the Patients Followed in a Constitutive Reference Center for Autoimmune Cytopenia
The Internal Medicine Department of Haut-Lévêque Hospital (Pr E LAZARO, Pr JL PELLEGRIN, Pr
 JF VIALLARD) was accredited in 2017 by the Ministry of Health as a Constitutive Reference
 Center for Autoimmune Cytopenia. The investigators wish to launch new research projects in
 autoimmune cytopenia and propose a translational and fundamental research based on
 collaboration between the clinical department, the biological resource center and the CNRS
 and INSERM research units ("Bedside to the Bench Strategy"). Thus, in the perspective of
 future research work, it seems imperative to set up a biological bank for the patients
 followed in our Reference Center.
Our department follows about 350 patients with immune thrombocytopenia (ITP), 50 with
 autoimmune hemolytic anemia (AHA), and about thirty patients for autoimmune neutropenia and
 erythroblastopenia. The number of new patients per year is about 50. The investigators are
 working since several years on different research topics concerning ITP and AHA.

 In the field of ITP, the investigators are working on abnormalities of megakaryopoiesis
 present in a particular subgroup of patients. The investigators seek to identify the
 molecular mechanisms underlying this platelet-forming disorder. This research is done within
 the INSERM U1034 unit of the University of Bordeaux.

 In AHA, The investigators are working on the role of regulatory CD8+ T lymphocytes and the
 interest of low doses of Interleukin-2 in their treatment. This part is carried out within
 the CNRS unit UMR 5164 ImmunoConcept. The biological collection the investigators wish to
 create will be available for basic research projects and may be available to the
 pharmaceutical industry as part of the development of new molecules.
Inclusion Criteria:

 -  Patients over 16 years old.

 -  Patients with autoimmune cytopenia according to the definitions reported in the latest
 update of the French National Care Protocol (PNDS 2017).

 -  Affiliated person or beneficiary of a social security scheme.

 -  Free, informed and written consent signed by the participant and the investigator (at
 the latest on the day of inclusion and before any examination required by the
 research).

 Exclusion Criteria:

 -  Positivity for HIV, Hepatitis C or B virus.

 -  Pregnant or lactating woman.

 -  Patient undergoing treatment for autoimmune cytopenia