Hypothyroidism during immunotherapy with interleukin-2 is associated with antithyroid antibodies and response to treatment.
1993
PURPOSEWe investigated whether the association of interleukin-2 (IL-2) with hypothyroidism is related to the presence of thyroid autoantibodies, dose of IL-2, and clinical effectiveness of treatment, and reviewed the literature.PATIENTS AND METHODSSixteen cancer patients were treated with high-dose recombinant, continuous infusion IL-2 (18 x 10(6) IU/m2/d) and lymphokine-activated killer (LAK) cells. One patient previously treated for a toxic goiter with radioactive iodine was analyzed separately. Thyroid function and levels of thyroid antibodies were determined regularly.RESULTSSeven of 15 patients (47%) became hypothyroid with high serum thyrotropin (TSH) levels within 60 to 120 days after the start of treatment; five responded favorably to treatment (one complete remission [CR], four partial remissions [PRs]), compared with none of the other eight patients. Two hypothyroid patients developed antimicrosomal antibodies (AMAs), one showed a further increase of antithyroglobulin antibodies (TgAbs), and six...
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