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Slow Release Lanreotide in Combination with Interferon-2b in the Treatment of Symptomatic Advanced Medullary Thyroid Carcinoma

Dipartimento di Endocrinologia ed Oncologia Molecolare e Clinica, Facoltà di Medicina e Chirurgia, Università degli Studi di Napoli Federico II (G.V., P.T., E.R., A.C., A.R.B., G.L.), and Dipartimento di Biochimica e Biofisica, II Università di Napoli (M.C., A.A.), 80131 Naples, Italy

Address all correspondence and requests for reprints to: Prof. Giovanni Lupoli, Dipartimento di Endocrinologia ed Oncologia Molecolare e Clinica, Via Pansini 5, 80131 Naples, Italy. E-mail: lupoli{at}unina.it

Somatostatin analogs are promising agents in the treatment of medullary thyroid carcinoma. We have evaluated the effects of the slow release somatostatin analog lanreotide in combination with interferon-2b in seven patients with advanced and symptomatic medullary thyroid carcinoma. The frequency and intensity of daily flushing episodes and bowel movements, the intensity of fatigue, weight, performance status, calcitonin levels, and change in tumor masses were recorded before and during treatment. No objective complete or partial responses were recorded. However, disease stabilization and minor tumor regression were observed in three of seven and two of seven patients, respectively. The number and intensity of bowel movements and flushing episodes decreased in five of six and two of two patients, respectively. Decrease in fatigue and improvement in performance status were observed in five of seven and six of seven patients, respectively. Weight gain was recorded in three of four patients. Plasma levels of calcitonin decreased significantly in six of seven patients. Clinical benefit, evaluated by a structured algorithm, was achieved in six of seven patients and was coupled with a decrease of 50% or more in serum calcitonin levels in three of seven patients. In conclusion, the combination of lanreotide with interferon had a major impact on clinical symptoms and was well tolerated.

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