Ph I/II Study of Allogeneic SCT for Clinically Aggressive Sickle Cell Disease (SCD)
Sickle Cell Disease
About this trial
This is an interventional treatment trial for Sickle Cell Disease focused on measuring Sickle Cell Disease, Subtype Hgb SS, Subtype Hgb SC, Subtype Hgb SB, Chronic Transfusion Therapy, Prior Stroke, Allogeneic, Stem Cell Transplantation, Alemtuzumab, Sirolimus, Total Body Irradiation, Hydroxyurea Intolerant
Eligibility Criteria
Inclusion Criteria:
Patients with sickle cell disease, subtype Hgb SS, SC, or SB disease who are on chronic transfusion therapy for a prior stroke or those patients who were intolerant of hydroxyurea therapy or were being treated with hydroxyurea therapy and were complicated by at least one of the following:
- Stroke or central nervous system event lasting longer than 24 hours
- Frequent vaso-occlusive pain episodes, defined as ≥ 3 per year severe enough to interfere with the patient's normal daily function or require medical attention in the clinic, emergency room, acute care center, or hospital
- Recurrent episodes of priapism, defined as ≥ 2 per year requiring emergency room visits
- Acute chest syndrome with recurrent hospitalizations, defined as ≥ 2 lifetime events
- Red-cell alloimmunization (≥ 2 antibodies) during longterm transfusion therapy
- Bilateral proliferative retinopathy with major visual impairment in at least one eye
- Osteonecrosis of 2 or more joints
- Sickle cell nephropathy
- Stage I or II sickle lung disease
- Symptoms of pulmonary hypertension and mean pulmonary artery pressure > 25mmHg
- Age 16-60 years
- Karnofsky performance status of 70 or higher
- Adequate cardiac function, defined as left ventricular ejection fraction ≥ 40%
- Adequate pulmonary function, defined as diffusion lung capacity of carbon monoxide ≥ 50%
- Estimated GFR ≥ 30mL/min as calculated by the modified MDRD equation
- ALT ≤ 3x upper limit of normal
- No evidence of chronic active hepatitis or cirrhosis
- HIV-negative
- Patient is not pregnant
- History of compliance with medications and medical care
- Patient is able and willing to sign informed consent
- Patient has an HLA-identical matched related donor
Sites / Locations
- University of Illinois at ChicagoRecruiting
Arms of the Study
Arm 1
Experimental
Allogeneic Non-Myeloablative Stem Cell Transplantation
The transplant regimen will consist of alemtuzumab 1mg/kg divided over five days, 300 cGy TBI, followed by sirolimus dosed for a target serum trough level of 10- 15 ng/mL.