D-penicillamine in Felty's syndrome.

We report our experience with 8 patients with Felty's syndrome who were treated with D-penicillamine for a mean of one year. Six of the 8 patients experienced improvement in their neutropenia. Cutaneous ulcers healed in 4 of 6, while recurrent infections cleared in 3 of 5 patients. The drug was withdrawn in 6 patients--lack of response in one, thrombocytopenia in one, urticaria in one, rash in one, and granulocytopenia in 2. One of the latter 2 patients developed pancytopenia and died. Although D-penicillamine is effective in treatment of Felty's syndrome, its side effects can be serious and potentially lethal. Its use should be limited to patients who have failed other treatments.