title: [Chemosensitivity test for unresectable non-small cell lung cancer].
abstract: To choose the optimal chemotherapy regimens, we have employed a new chemosensitivity testing method, the collagen gel droplet embedded culture drug sensitivity test (CDDST) for patients with non-small cell lung cancer (NSCLC). This method requires fewer cancer cells(1 x 10(5) cells in 2 specimens biopsied by bronchoscopy) than conventional chemosensitivity tests and can be also used to assess cases of malignant effusion. Correlations between the in vitro and in vivo responses were: true positive ratio, 75.0% (21/28 patients); true negative ratio 85.0% (17/20 patients); and accuracy 79.2%. The median survival time (MST) of patients (n = 11) with unresectable NSCLC who were given optimal chemotherapy based on the results of the CDDST was 15.8 months and the MST of those (n = 16) who did not receive a sensitive agent was 5.6 months. There was a significant difference between these two groups (p = 0.0048, log-rank test). These results suggest that the CDDST is an effective method for chemosensitivity testing in unresectable NSCLC.
authors.affiliation: Division of General Thoracic Surgery, Keio University, Tokyo, Japan.
authors.forename: Masahumi
authors.initials: M
authors.lastname: Kawamura
authors.forename: Yoshimasa
authors.initials: Y
authors.lastname: Inoue
authors.forename: Takahiko
authors.initials: T
authors.lastname: Oyama
authors.forename: Koichi
authors.initials: K
authors.lastname: Kobayashi
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology* / Q000627:therapeutic use; D002289:Carcinoma, Non-Small-Cell Lung / Q000188:drug therapy / Q000473:pathology*; D004354:Drug Screening Assays, Antitumor / Q000379:methods*; D006801:Humans; D008175:Lung Neoplasms / Q000188:drug therapy / Q000473:pathology*; D015996:Survival Rate; D014407:Tumor Cells, Cultured
chemical_list: D000970:Antineoplastic Agents