Trials in malignant mesothelioma. LCSG 851 and 882.

In 1985 the Lung Cancer Study Group (LCSG) initiated clinical trials in malignant pleural mesothelioma because LCSG member institutions had access to large numbers of patients and had significant experience treating this uncommon cancer. The first trial, LCSG 851, defined the patient population seen by the LCSG, and the feasibility of performing surgical resection by extrapleural pneumonectomy in a multi-institutional setting. Of 83 patients entered on this study from September 1985 to June 1988, only 20 could undergo an extrapleural pneumonectomy, and 3 of 20 patients died postoperatively. This experience prompted the LCSG to explore combining a potentially less morbid operation, pleurectomy/decortication, with adjuvant therapy. The results of another LCSG trial (LCSG 861) and of a small single institutional pilot study demonstrated the feasibility of intrapleural cisplatin-based chemotherapy, and led to the development of LCSG 882, which combined pleurectomy/decortication with postoperative intrapleural, and subsequent systemic, cisplatin-based chemotherapy. This study was not completed because of discontinuation of funding for the LCSG. However, a single-institution phase 2 trial of very similar design has subsequently shown the feasibility of this combined modality approach.