Kiadis Pharma announces abstracts and presentations for the 60th American Society of Hematology (ASH) Annual Meeting

Amsterdam, The Netherlands, November 7, 2018 - Kiadis Pharma N.V. ("Kiadis Pharma" or the "Company") (Euronext Amsterdam and Brussels: KDS), a clinical-stage biopharmaceutical company, today announces two data presentations at the 60th American Society of Hematology (ASH) Annual Meeting. The event will be held December 1-4, 2018, at the San Diego Convention Center in San Diego, CA.

Abstract 120: Efficacy and Safety of a Single Dose of Donor Lymphocytes Depleted of Alloreactive T-Cells (ATIR101) Following T-Cell-Depleted Haploidentical HSCT: A Pooled Analysis of Two Phase II Studies
Type: Oral
Session: 711. Cell Collection and Processing I

Authors: Denis-Claude Roy et al.

Date & Presentation time: Saturday, December 1, 2018, 10:45 AM

Location: Grand Hall A (Manchester Grand Hyatt San Diego)

Background: An ex vivo photodepletion method has been developed to produce ATIR101 (Kiadis Pharma), a donor lymphocyte infusion (2.0 million cells/kg) administered after haploidentical allogeneic hematopoietic stem cell transplantation (haplo-HSCT) to aid immune reconstitution. ATIR101 is depleted of alloreactive T-cells and early administration after T-cell-depleted haplo-HSCT has the potential to reduce serious complications resulting from delayed immune reconstitution, such as infections, malignant relapse, and severe graft-versus-host disease (GVHD) in the recipient. The safety and efficacy of a single dose of ATIR101 are presented here in a pooled analysis of two phase II clinical trials: CR-AIR-007 (NCT01794299) & CR-AIR-008 (NCT02500550).

Abstract 3474: Depletion of Alloreactive T Cells after Haploidentical HSCT: Comparison of Outcomes for Ex Vivo Versus In Vivo Treatment Strategies

Type: Poster
Session: 732. Clinical Allogeneic Transplantation

Authors: Steven Devine et al.

Date & Presentation time: Sunday, December 2, 2018, 6:00 PM-8:00 PM

Location: Hall GH (San Diego Convention Center)

Background: The use of haploidentical allogeneic hematopoietic stem cell transplantation (haplo-HSCT) has increased owing to therapeutic advances that have mitigated the main barriers such as high incidence of graft-versus-host disease (GVHD) and non-relapse mortality (NRM). Such T-cell depletion can be performed in vivo early after T-cell-replete haplo-HSCT using post-transplant cyclophosphamide (PTCy). Alternatively, T-cell-depleted haplo-HSCT can be supplemented with T-lymphocytes that are depleted ex vivo of their alloreactive component in the form of ATIR101 (Kiadis Pharma). Although ATIR101 requires cell manufacturing and is more expensive, it limits toxicity to the patient, enables haplo-HSCT without the use of immunosuppressants, and may reduce relapse rates. Both strategies are promising, but no attempt has yet been made to compare clinical results in similar patient populations to delineate key features of alloreactive T-cell depletion performed either ex vivo or in vivo.