Clinical Grade Adenovirus Specific T Cells for Immunotherapy After Allogeneic Stem Cell Transplantation (CTL-ADV)

2016-08-02 05:53:23 | BioPortfolio


Fourteen patients will be included for infusion of adenovirus-specific T-cells generated by a clinical grade IFN-γ based immunomagnetic isolation from a leukapheresis from their original donor or a haploidentical donor, in case of Umbilical cord blood transplantation, in the event of refractory ADV infection or disease.


Allogeneic Hematopoietic Stem Cell Transplantation (HSCT) has improved over the last decades. However, after HSCT and especially with matched unrelated, cord blood or haploidentical donors, patients often experience a deep immunodeficiency, increasing susceptibility to viral infections. Among them, adenovirus (ADV) systemic infection, often refractory to antiviral treatment, is associated with a high mortality rate up to 50% (even more in children). Viremia monitoring after HSCT has contributed to improve survival allowing the implementation of a pre-emptive anti-viral treatment before any appearance of clinical signs of ADV disease. Nevertheless, no anti-viral drug is authorized for ADV infections, although intravenous (IV) cidofovir seemed to be, up to now, the most efficient. However, nephrotoxicity, especially tubular dysfunction, is often described, requiring hydratation and uroprotection with probenecid and limiting the treatment period.

Meanwhile, adoptive transfer of ADV-specific T cells, prepared with an immunomagnetic clinical grade technology, is becoming an alternative treatment that has already proved feasible, safe and helpful in viral clearance and immune reconstitution related to an in vivo expansion of ADV-specific T cells leading to clinical improvement (Feuchtinger et al, 2006, 2015; Qazim et al, 2013). Our team proposes a multicenter Phase I/II clinical trial with ADV-specific T cells where 14 patients, with refractory ADV infection or disease after unrelated Peripheral blood or umbilical cord blood HSCT, are included.

Study Design

Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment


Adenovirus Infection


Infusion of ADV specific T cells


Centre Hospitalier Universitaire de Nancy




Central Hospital, Nancy, France

Results (where available)

View Results


Published on BioPortfolio: 2016-08-02T05:53:23-0400

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Medical and Biotech [MESH] Definitions

The very first viral gene products synthesized after cells are infected with adenovirus. The E1 region of the genome has been divided into two major transcriptional units, E1A and E1B, each expressing proteins of the same name (ADENOVIRUS E1A PROTEINS and ADENOVIRUS E1B PROTEINS).

An Ig superfamily transmembrane protein that localizes to junctional complexes that occur between ENDOTHELIAL CELLS and EPTHELIAL CELLS. The protein may play a role in cell-cell adhesion and is the primary site for the attachment of ADENOVIRUSES during infection.

Proteins transcribed from the E3 region of ADENOVIRUSES but not essential for viral replication. The E3 19K protein mediates adenovirus persistence by reducing the expression of class I major histocompatibility complex antigens on the surface of infected cells.

Vaccines used to prevent infection by any virus from the family ADENOVIRIDAE.

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