A Phase II Study to Evaluate Low-Dose Alemtuzumab as a Glucocorticoid-Sparing Agent for Initial Systemic Treatment of Acute Graft-Versus-Host Disease

OBJECTIVES:

• Determine whether the administration of low-dose alemtuzumab at the onset of acute graft-versus-host disease can accelerate withdrawal of glucocorticoids and decrease nonrelapsing mortality in patients who have undergone myeloablative allogeneic stem cell transplantation.

OUTLINE: This is an open-label, nonrandomized study.

Within 72 hours of beginning glucocorticoid therapy, patients receive alemtuzumab IV over at least 2 hours on days 1 and 2. If graft-versus-host disease (GVHD) responds well during days 1-14 but returns between days 28 and 56, patients are eligible to receive 2 additional doses of alemtuzumab.

Patients receive glucocorticoid therapy comprising methylprednisolone IV or oral prednisone daily until objective evidence of improvement in manifestations of GVHD. Patients with resolved or significantly improved GVHD receive treatment until day 10 followed by an accelerated taper until day 72 if no flare up of GVHD occurs during the glucocorticoid taper. Patients with recurrent or progressive GVHD during the accelerated taper are treated for 5-7 days before resuming a less rapid taper. Patients with no improvement may receive secondary therapy with alternative immunosuppressive medications at the discretion of the managing physician. Treatment continues in the absence of progressive GVHD of at least 3 days duration during days 2-10; persisting GVHD without improvement between days 10-14; recurrent or progressive GVHD after day 10 that does not respond within 3 days to topical immunosuppressive therapy; and/or an increase in the systemic glucocorticoid dose by two taper steps; or unacceptable toxicity.