RESUMO
Between 1981 and 1986, a total of 46 patients with small cell lung cancer (SCLC) achieving a complete response by chemotherapy with or without chest irradiation were randomized either to receive prophylactic cranial irradiation (PCI) or not. With a median follow-up time of 8.5 years for both groups, only five of 23 patients (22%) in the PCI group developed brain relapse, while 12 out of 23 (52%) in the no PCI group did so (P < 0.05). The frequency of patients developing a sole brain relapse during their whole clinical course was 4% for the PCI group and 17% for the no PCI group, however, the difference was not statistically significant. Patient survival was better for the PCI group (median survival time of 21 months, and 5-year survival rate of 22%) as compared with the no PCI group (median survival time of 15 months, and 5-year survival rate of 13%), showing a marginal significance (P = 0.097). Late neurologic toxicity was infrequent; only one developed a mild deterioration among seven long-term disease-free survivors in the PCI group. These results appear to warrant further clinical trials to clarify the utility of PCI in patients with SCLC achieving a complete response.
Assuntos
Carcinoma de Células Pequenas/radioterapia , Irradiação Craniana , Neoplasias Pulmonares/radioterapia , Adulto , Idoso , Neoplasias Encefálicas/prevenção & controle , Neoplasias Encefálicas/secundário , Carcinoma de Células Pequenas/mortalidade , Causas de Morte , Terapia Combinada , Feminino , Seguimentos , Humanos , Neoplasias Pulmonares/mortalidade , Masculino , Pessoa de Meia-Idade , Taxa de SobrevidaRESUMO
The clinical trial of KRN 8601 was conducted in patients with neutropenia induced by chemotherapy for lung cancer. Thirty-six patients were treated with KRN 8601 subcutaneously for 14 days once daily at the dose of 50 or 100 micrograms/m2, and the effects were compared with the control phase without KRN 8601 treatment. Both the elevation of neutrophil count and shortened period of neutropenia were observed by the administration of KRN 8601. The efficacy rate was 75% (18/24) at 50 micrograms/m2 and 100% (10/10) at 100 micrograms/m2. A side effect observed was fever in one patients, and in 2 patients, abnormal GOT, GPT and LDH elevation were observed in each. We concluded that KRN 8601 was clinically effective and safe at the dose of 50 micrograms/m2 or 100 micrograms/m2 for neutropenia induced by chemotherapy for lung cancer.