Allogeneic Mixed Chimerism Stem Cell Transplant Using Campath for Hemoglobinopathies & Bone Marrow Failure Syndromes

Phase 2

Completed

Conditions: Sickle Cell Anemia
Severe Aplastic Anemia
Paroxysmal Nocturnal Hemoglobinuria (PNH)
Pure Red Cell Aplasia

Interventions: Drug: Campath, Chemo and/or TBI Allo SCT

Registration Number: NCT00004143

Lead Sponsor: David Rizzieri, MD

Brief Summary: RATIONALE: Although used primarily to treat malignant disorders of the blood, allogeneic stem cell transplantation can also cure a variety of non-cancerous, inherited or acquired disorders of the blood. Unfortunately, the conventional approach to allogeneic stem cell transplantation is a risky procedure. For some non-cancerous conditions, the risks of this procedure outweigh the potential benefits. This protocol is designed to test a new approach to allogeneic stem cell transplantation. It is hoped that this approach will be better suited for patients with non-cancerous blood and bone marrow disorders.

Detailed Description: OBJECTIVES:

Primary Objective(s):

1. Evaluate the feasibility in terms of mortality, occurrence of acute graft versus host disease, and grades 3-4/4 toxicity of in vivo and in vitro Campath coupled with concomitantly administered nonmyeloablative fludarabine, cyclophosphamide and total body irradiation (TBI) followed by Human Leukocyte Antigen (HLA) 5-6/6 matched family member allo peripheral blood stem cell transplant (PBSCT).

2. Evaluate the engraftment rate of HLA 5-6/6 matched family member patients who receive in vivo Campath followed by concomitantly administered fludarabine, cyclophosphamide and total body irradiation (TBI) as a conditioning regimen with Campath-treated peripheral blood stem cells (in vitro and in vivo exposure).

Secondary Objective(s):

1. Evaluate the response rate and survival of patients who receive a non-myeloablative conditioning regimen of in vivo Campath followed by concomitantly administered fludarabine, cyclophosphamide and total body irradiation (TBI) with Campath-treated peripheral blood stem cells.

2. Evaluate the recovery of immune function post engraftment with this regimen.

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 2

Inclusion Criteria

Patients must have their clinical material reviewed at the transplanting institution and the diagnosis confirmed
Performance status must be Cancer and Leukemia Group B (CALGB) Performance Status (PS) 0, 1, or 2.
Patients must have a 5/6 to 6/6 HLA matched family member donor who is evaluated and deemed able to provide PBSCs and/or marrow by the transplant team. Donor must have < 50% Hemoglobin S (HgS) on hemoglobin electrophoresis. Cytomegalovirus (CMV) status of the donor will be assessed, but not used as an exclusion criterion.
Patients must meet the following laboratory parameters unless due to disease status as determined by the treating physician:
1. bilirubin and hepatic transaminases and creatinine must be reviewed by the transplantation center and deemed acceptable.
2. HIV antibody negative.
3. hematocrit, white cell count, platelet counts and hematologic status will be reviewed by the treating physician before patient is deemed acceptable.
Patient must agree to use some form of adequate birth control during the periods that they receive chemotherapy and any post-chemotherapy medications related to the transplant.
Patients must also have a resting multiple gated acquisition scan (MUGA) or echocardiogram and Pulmonary Function Tests (PFTs) with Diffusing Capacity of the Lung for Carbon Monoxide (DLCO) performed before transplant. Recommended minimum standards include an Ejection Fraction (EF) greater than 40% and DLCO greater than 40% for this less toxic regimen.
Appropriate cardiology or pulmonary consultations should be considered if the patient has severe cardiac or lung disease at the initiation of therapy.

I) Hemoglobinopathies:

(a)Sickle Cell Anemia having history of one or more of the following despite treatment with standard therapies such as hydroxyurea: i) 2 or more episodes of acute chest syndrome since age 13 years ii) pulmonary hypertension as measured by tricuspid regurgitant jet velocity of greater than 2.5m/s iii) 2 or more painful crisis per year requiring medical care and analgesia in excess of what is needed at baseline.

iv) history of cerebrovascular accident (b)Thalassemia major: Those eligible will have either cardiac or hepatic sequela of thalassemia as documented by biopsy or functional studies. For those with hepatic damage, this would be an increase in size by 50% of the liver or a doubling of the total bilirubin, aspartate transaminase (AST), alanine aminotransferase (ALT), or alkaline phosphatase. To be eligible for transplant due to cardiac damage, there must be evidence of left ventricular dysfunction as measured by MUGA scan or echocardiography.

II) Bone marrow failure Disorders

Severe Aplastic Anemia: Cytopenia consisting of at least 2 of the following 3: absolute neutrophil count less than 500/μL, platelet count less than 20,000/μL, and reticulocyte count less than 50,000/μL.
Paroxysmal nocturnal hemoglobinuria (PNH): Patients must have a history of either life-threatening thrombosis, cytopenia, transfusion dependence or recurrent, debilitating hemolytic crisis
Pure red cell aplasia: Patients must be transfusion dependent.

Exclusion Criteria

pregnant or lactating women,
patients with other major medical or psychiatric illnesses which the treating or transplant physician feels could seriously compromise compliance to this protocol
patients with known history of allergies to murine protein

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Campath SCT for hemoglobinopathies	Campath, Chemo and/or TBI Allo SCT	Campath, Chemo and/or TBI Allo SCT
Campath SCT for Bone Marrow Failure	Campath, Chemo and/or TBI Allo SCT	Campath, Chemo and/or TBI Allo SCT

Primary Outcome Measures

Name	Time	Method
Number of Patients With Neutrophil Engraftment	1 year post transplant	Number of patients with neutrophil engraftment: Absolute Neutrophil Count (ANC) \> 500/μL and hemoglobin level remaining above 10 g/dL without transfusion support, with tests showing at least 2.5% donor cells present. Primary graft failure is defined as absence of establishment of adequate donor hematopoiesis by day 42 with bone marrow cellularity \< 5%, peripheral White Blood Count (WBC) \< 500/μL, peripheral ANC \< 100/μL, and/or platelets \< 10,000/μL by day 120 with absence of megakaryocytes in the bone marrow (in the absence of disease relapse).
Number of Patients With Platelet Engraftment	1 year post transplant	Number of patients with platelet engraftment - Platelets \> 20,000/μL and hemoglobin level remaining above 10 g/dL without transfusion support, with tests showing at least 2.5% donor cells present. Primary graft failure is defined as absence of establishment of adequate donor hematopoiesis by day 42 with bone marrow cellularity \< 5%, peripheral White Blood Count (WBC) \< 500/μL, peripheral ANC \< 100/μL, and/or platelets \< 10,000/μL by day 120 with absence of megakaryocytes in the bone marrow (in the absence of disease relapse).
Number of Patients With Grade 3-4 Acute Graft Versus Host Disease (GVHD)	60 days post transplant	Number of patients with Grade 3-4 acute Graft Versus Host Disease (GVHD). GVHD will be monitored at least two times per week through day 45, then weekly through day 60 and graded by 2 persons at each institution, to ensure internal consistency in grading.
Number of Participants With Grade 3-4 Unexpected Adverse Events	45 days post transplant	An unexpected adverse event is one that differs in the nature, severity, or frequency from (a) the research procedures that are described in the protocol-related documents, (such as the IRB-approved research protocol and informed consent document) as expected, and/or (b) the characteristics of the subject population being studied.
Number of Participants With Transplant-related Mortality	100 days	Number of patients who died due to transplant-related complications

Secondary Outcome Measures

Name	Time	Method
Overall Survival	2 years	Number of patients alive 2 years after transplant

Trial Locations

Locations (2): Duke Cancer Institute
🇺🇸
Durham, North Carolina, United States
Florida Hospital Cancer Institute
🇺🇸
Orlando, Florida, United States