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  • Title: Autocrine growth factors and neuroendocrine markers in the development of small-cell lung cancer.
    Author: Johnson BE, Kelley MJ.
    Journal: Oncology (Williston Park); 1998 Jan; 12(1 Suppl 2):11-4. PubMed ID: 9516605.
    Abstract:
    Two different clinical trials using biological agents directed against an autocrine growth factor and a surface marker of neuroendocrine differentiation have been used for patients with relapsed small-cell lung cancer. In a phase II trial, an antibody (2A11) directed against the autocrine growth factor gastrin-releasing peptide has been used to treat patients with relapsed small-cell lung cancer. One of 12 evaluable patients treated with 2A11 250 mg/m2 three times weekly for 4 weeks achieved a complete response. An antibody directed against the neural cell adhesion molecule has been linked to a modified ricin molecule. This immunotoxin, N901-bR, has undergone phase I testing, and a recommended phase II dose of 30 micrograms/kg/day for 7 days by continuous infusion has been determined. In the phase I trial, one of 21 patients with relapsed or refractory small-cell lung cancer had a partial response to this treatment. Therefore, it appears that an antibody directed against an autocrine growth factor and an immunotoxin directed against a surface marker of neuroendocrine differentiation can inhibit the growth of small-cell lung cancer in vitro and in vivo; both produced some evidence of antitumor activity in patients. Further studies with agents directed against autocrine growth factors and surface markers of neuroendocrine differentiation appear warranted.
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