Randomized phase III study of cisplatin with or without raltitrexed in patients with malignant pleural mesothelioma: an intergroup study of the European Organisation for Research and Treatment of Cancer Lung Cancer Group and the National Cancer Institute of Canada.
OBJECTIVE
We conducted a phase III trial to determine whether first-line treatment with raltitrexed, a thymidine synthase inhibitor, and cisplatin results in superior outcome compared with cisplatin alone in patients with malignant pleural mesothelioma (MPM).


METHODS
Eligible patients with histologically proven advanced MPM, not pretreated with chemotherapy, WHO performance status (PS) 0 to 2, and adequate hematological, renal, and hepatic function were randomly assigned to receive cisplatin 80 mg/m2 IV on day 1, alone (arm A) or combined with raltitrexed 3 mg/m2 (arm B). In patients with measurable disease, response was monitored using the Response Evaluation Criteria in Solid Tumors criteria. Health related quality of life (HRQOL) was measured using the European Organisation for Research and Treatment of Cancer QLQ-C30 and Lung Module (QLQ-LC13).


RESULTS
Two hundred fifty patients were randomized: 80% male; median age, 58 years; and WHO PS, 0, 1, 2 in 25, 62, and 13% of cases, respectively. There were no toxic deaths. The main grade 3 or 4 toxicities observed were neutropenia and emesis, reported twice as often in the combination arm. Among 213 patients with measurable disease, response rate was 13.6% (arm A) versus 23.6% (arm B; P = .056). No difference in HRQOL was observed on any of the scales. Median overall and 1-year survival in arms A and B were 8.8 (95% CI, 7.8 to 10.8) v 11.4 months (95% CI, 10.1 to 15), respectively, and 40% v 46%, respectively (P = .048).


CONCLUSIONS
A combination of raltitrexed and cisplatin improves overall survival compared with cisplatin alone. This study confirms that a combination of cisplatin and an antifolate is superior to cisplatin alone in patients with MPM, without harmful effect on HRQOL.
van Meerbeeck
Jan P
JP
Thoracic Oncology Unit, University Hospital -7K12IE, De Pintelaan 185, B 9000 Ghent, Belgium. jan.vanmeerbeeck@ugent.be
Gaafar
Rabab
R
Manegold
Christian
C
Van Klaveren
Rob J
RJ
Van Marck
Eric A
EA
Vincent
Mark
M
Legrand
Catherine
C
Bottomley
Andrew
A
Debruyne
Channa
C
Giaccone
Giuseppe
G
D000328:Adult; D000368:Aged; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000009:adverse effects / Q000627:therapeutic use*; D002945:Cisplatin / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007262:Infusions, Intravenous; D008297:Male; D008654:Mesothelioma / Q000188:drug therapy* / Q000473:pathology; D008875:Middle Aged; D009503:Neutropenia / Q000139:chemically induced; D010997:Pleural Neoplasms / Q000188:drug therapy* / Q000473:pathology; D011799:Quinazolines / Q000008:administration & dosage; D016019:Survival Analysis; D013876:Thiophenes / Q000008:administration & dosage; D016896:Treatment Outcome; D014839:Vomiting / Q000139:chemically induced
D011799:Quinazolines; D013876:Thiophenes; C068874:raltitrexed; D002945:Cisplatin