Safety and Efficacy of Donor T-lymphocytes Depleted ex Vivo of Host Alloreactive T-cells (ATIR) in Patients With a Hematologic Malignancy Who Received a Hematopoietic Stem Cell Transplantation From a Haploidentical Donor

Kiadis Pharma

Status and phase

Completed

Phase 2

Conditions

Acute Lymphoblastic Leukemia

Myelodysplastic Syndrome

Acute Myeloid Leukemia

Treatments

Biological: ATIR

Study type

Interventional

Funder types

Industry

Identifiers

NCT01794299

2012-004461-41 (EudraCT Number)

File # 9427-K0980\1-21C (Other Identifier)

CR-AIR-007

Details and patient eligibility

About

The purpose of this study is to determine whether ATIR is safe and effective in reducing transplant-related mortality and improving overall survival, when infused in patients with a hematologic malignancy following a T-cell depleted stem cell graft from a related haploidentical donor.

Full description

Study CR-AIR-007 is an exploratory, open-label, multicenter study. After signing informed consent, patients will receive a hematopoietic stem cell transplantation (HSCT) from a related, haploidentical donor, followed by infusion with ATIR between 28 and 32 days after the HSCT (or later if required by the patient's medical condition). Patients will receive ATIR as a single infusion at a dose of 2x10E6 viable T-cells/kg. All patients treated with ATIR will be followed up until 12 months after the HSCT. Assessments will be performed at weekly visits from the day of ATIR infusion until 8 weeks after ATIR infusion, at monthly visits from 3 until 6 months after the HSCT, every 2 months from 6 until 12 months after the HSCT, and every 6 months from 12 until 24 months after the HSCT.

Enrollment

31 patients

Sex

All

Ages

18 to 65 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Any of the following hematologic malignancies: a) Acute myeloid leukemia (AML) in first remission with high-risk features or in second or higher remission b) Acute lymphoblastic leukemia (ALL) in first remission with high-risk features or in second or higher remission c) Myelodysplastic syndrome (MDS): transfusion-dependent, or intermediate or higher Revised International Prognostic Scoring System (IPSS-R) risk group
Eligible for haploidentical stem cell transplantation according to the investigator

Exclusion criteria

Availability of a suitable matched related or unrelated donor following a donor search
In second or higher remission with the previous remission having lasted less than 6 months
Diffusing capacity for carbon monoxide (DLCO) < 50% predicted
Left ventricular ejection fraction < 50% (evaluated by echocardiogram or multiple gated acquisition [MUGA])
Aspartate aminotransferase (AST) > 2.5 x upper limit of normal (ULN)(CTCAE grade 2)
Bilirubin > 1.5 x ULN (CTCAE grade 2)
Creatinine clearance < 50 mL/min (calculated or measured)
Positive test for human immunodeficiency virus (HIV)
Positive pregnancy test (women of childbearing age only)
Prior allogeneic stem cell transplantation using stem cells from a matched sibling donor, a matched unrelated donor, a haploidentical donor, or a cord blood donor
Prior autologous stem cell transplantation
Stay at intensive care unit for more than 2 months in the preceding 12 months
Estimated probability of surviving less than 3 months
Known allergy to any of the components of ATIR (e.g., dimethyl sulfoxide)
Any other condition which, in the opinion of the investigator, makes the patient ineligible for the study

Donor inclusion criteria

Haploidentical family donor with 2 to 3 mismatches at the human leukocyte antigen (HLA)-A, -B and/or -DR loci of the unshared haplotype
Male or female, age ≥ 16 and ≤ 75 years
Eligible for donation according to the transplantation center

Donor exclusion criteria

Positive viral test for HIV-1, HIV-2, hepatitis B virus (HBV), hepatitis C virus (HCV), Treponema pallidum, human T-lymphotropic virus (HTLV)-1*, HTLV-2*, or West Nile virus (WNV)* (if tested) (* at Canadian centers only)
Positive pregnancy test or nursing (women of childbearing age only)