Clinical trial NCT04356469: TCR Alpha Beta T-cell Depleted Haploidentical HCT in the Treatment of Non-Malignant Hematological Disorders in Children
Official title: Study of TCR Alpha Beta T-Cell and CD19 B-Cell Depletion for Hematopoietic Cell Transplantation From Haploidentical Donors in the Treatment of Non-Malignant Hematological Disorders in Children
Study type: INTERVENTIONAL
Overall status: RECRUITING
Phase: PHASE2
Conditions: Hemoglobinopathy (Disorder)
Severe Aplastic Anemia
Bone Marrow Failure Syndrome
Lead sponsor: Johns Hopkins All Children's Hospital
Sponsor class: OTHER
First posted: 2020-04-22
Enrollment: 17
Sex: ALL
Minimum age (years): 0
Maximum age (years): 21
Standard ages: CHILD
ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: This research is being done to learn if a new type of haploidentical transplantation using TCR alpha beta and CD19 depleted stem cell graft from the donor is safe and effective to treat the patient's underlying condition. This study will use stem cells obtained via peripheral blood or bone marrow from parent or other half-matched family member donor. These will be processed through a special device called CliniMACS, which is considered investigational.


Eligibility criteria: Inclusion Criteria:

1. Severe sickle cell disease (HbSS, HbSC, HbSB0, HbSB+, HbSD, HbSE) with at least one of the following criteria:

   1. Cerebrovascular accident lasting longer than 24 hours
   2. Impaired neuropsychological function with abnormal brain MRI/MRA
   3. Patients with frequent (≥ 3 per year for preceding 2 years) painful vaso-occlusive episodes
   4. Recurrent (≥ 3 in lifetime) acute chest syndrome events which have necessitated erythrocyte transfusion therapy
   5. Any combination of ≥ 3 acute chest syndrome episodes and vaso-occlusive pain episodes yearly for 3 years and have failed treatment with hydroxyurea (HU) (at least 6 months on maximum tolerated dose) or who are intolerant to HU therapy
2. Thalassemia major with at least one of the following criteria:

   1. Transfusion dependency defined as receiving 8 or more transfusions per year
   2. Thalassemia diagnosis documented by clinical assessment, laboratory evidence with microcytic anemia and absence of HbA (\< 10%) on electrophoresis and or confirmation by DNA analysis of alpha and beta gene loci
   3. Genotypically proven thalassemia major for children \< 2 years of age even in the absence of transfusion dependency
   4. Lucarelli class 1 or 2 risk status (i.e. with only 0-2 of the following factors: hepatomegaly, portal fibrosis, or poor response to chelation therapy)
3. Bone marrow failure syndromes and autoimmune cytopenias:

   1. Severe Aplastic Anemia refractory to immunosuppressive therapy
   2. Diamond Blackfan Anemia refractory to conventional therapy
   3. Inherited Bone Marrow Failure Syndromes such as Fanconi anemia and Shwachman-Diamond syndrome with progressive marrow failure (without cytogenetic evidence of MDS/AML)
   4. Severe Congenital Neutropenia
   5. Congenital Amegakaryocytic Thrombocytopenia
   6. Glanzmann Thrombasthenia
   7. Autoimmune Cytopenias refractory to conventional treatment (including Pure red cell aplasia, Evan's syndrome, Immune thrombocytopenia, autoimmune hemolytic anemia)
   8. Other marrow failure disorders not otherwise specified

Inclusion Criteria:

1. Patient has a suitable genotypic identical match of 5/10. The donor and recipient must be identical, as determined by high resolution typing, at least one allele of each of the following genetic loci: HLA-A, HLA-B, HLA-C, HLA-DRB1 and HLA-DQB1.
2. Patients must have adequate organ function measured by:

   1. Cardiac: asymptomatic or if symptomatic then LVEF at rest must be ≥ 40% or SF ≥ 26%
   2. Pulmonary: asymptomatic or if symptomatic DLCO ≥ 40% of predicted (corrected for hemoglobin) or pulse oximetry ≥ 92% on room air if the patient is unable to perform pulmonary function testing.
   3. Renal: Creatinine clearance (CrCl) or glomerular filtration rate (GFR) must be \> 50 mL/min/1.73 m2.
   4. Hepatic: Serum conjugated (direct) bilirubin \< 2.0 x ULN for age as per local laboratory unless attributable to Gilbert's syndrome; AST and ALT \< 5.0 x ULN for age as per local laboratory. Patients with hyperbilirubinemia as a consequence of hyperhemolysis, or a profound change in serum hemoglobin post blood transfusion, are not excluded.
   5. Karnofsky or Lansky (age-dependent) performance score ≥ 50
3. Signed written informed consent

Exclusion Criteria:

1. Participants who have an HLA-matched sibling who is able and willing to donate bone marrow. Patients with a HLA-matched unrelated donors are not excluded.
2. Pregnant or breastfeeding females.
3. Patient has HIV or uncontrolled fungal, bacterial or viral infections.
4. Patient has received prior solid organ transplant.
5. Patient has active GVHD (\> grade II) or chronic extensive GVHD due to a previous allograft at the time of inclusion.
6. For patients with hemoglobinopathy, liver biopsy is necessary if the patient has received chronic transfusions for over a year and has two ferritin levels of ≥ 1000 ng/ml. Patients with cirrhosis, extensive bridging hepatic fibrosis, or active hepatitis are excluded from enrollment.

Primary outcomes:
measure: Incidence of successful donor engraftment
timeFrame: Day 100 after transplantation
Secondary outcomes:
measure: Overall survival and Event-free survival
timeFrame: Up to 2 years post transplant
measure: Kinetics of neutrophil and platelet engraftment
timeFrame: Up to 42 days post transplant
measure: Transplant-related mortality
timeFrame: Up to 100 days post transplant
measure: Acute grade II-IV GvHD and Chronic GvHD
timeFrame: Up to 2 years post transplant
measure: Primary and secondary graft failure
timeFrame: Up to 2 years post transplant
measure: Transplant-related complications and infections
timeFrame: Up to 2 years post transplant
measure: Cellular and Immunological reconstitution by laboratory evaluations
timeFrame: Up to 2 years post transplant
Other outcomes:
Locations:
city: Saint Petersburg
country: United States
facility: Johns Hopkins All Children's Hospital
state: Florida
Study officials:
affiliation: Johns Hopkins All Children's Hospital
name: Deepak Chellapandian, MD
role: PRINCIPAL_INVESTIGATOR
References: