NONMYELOABLATIVE PREPARATIVE REGIMEN: If the patient is enrolled on an investigational nonmyeloablative hematopoietic cell transplant (HCT) protocol or a treatment plan that uses a nonmyeloablative preparative regimen with postgrafting cyclosporine (CSP) that does not use acute GVHD as its primary endpoint, the preparative regimen and immunosuppression after transplant will be according to respective protocol or treatment plan (Protocol 2546 serves as adjunct protocol).