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Characteristics and long-term outcomes of advanced pleural mesothelioma in Latin America (MeSO-CLICaP).

Abstract：

BACKGROUND:Malignant pleural mesothelioma (MPM) is an aggressive tumor, associated with poor prognosis. There is a lack of information about the clinical and pathological features related with survival in the Latin American population. METHODS:The MeSO-CLICaP registry identified 302 patients with advanced MPM diagnosed and treated between January 2008 and March 2016. The Cox model was applied to determine the variables associated with survival. A random forest tree model was built to predict the response to first-line chemotherapy among Latin American patients. RESULTS:The median age was 61.1 years (SD 10.6 years), 191 (63.2%) were men, 65.9% were ever smokers, and 38.7% had previous exposure to asbestos. A total of 237 (78.5%) had epithelioid tumors, and 188 (62.3%) and 114 (37.7%) cases had stage III or IV MPM, respectively. A total of 49 patients (16.2%) underwent pleurectomy, 57 (18.9%) received radiotherapy, and 279 patients received first-line platinum-based chemotherapy. The overall response rate to first-line chemotherapy was 40.4%, progression-free survival to first-line treatment was 5.7 months (95% CI 4.9-6.5), and 63 (20.8%) patients had pemetrexed maintenance. The median overall survival was 16.8 months (95% CI 13.0-20.5), and multivariate analysis found that stage (P = 0.013), and pleurodesis (P = 0.048), were independent prognostic factors for first-line overall survival. The model to predict response to first-line chemotherapy obtained a 0.98 area under the curve, a sensitivity of 93%, and a specificity of 95% for detecting responders and non-responders. CONCLUSION:This study identifies factors associated with clinical benefit from chemotherapy among advanced MPM Latin American patients, emphasizing the impact of histology and the clinical benefit of chemotherapy on outcomes.

journal_name

Thorac Cancer

journal_title

Thoracic cancer

authors

Rojas L,Cardona AF,Trejo-Rosales R,Zatarain-Barrón ZL,Ramírez-Tirado LA,Ruiz-Patiño A,Campos Gómez S,Corrales L,Oblitas G,Bacon L,Martín C,de Lima VCC,Freitas HC,Mas L,Vargas C,Carranza H,Otero J,Pérez MA,González L,

doi

10.1111/1759-7714.12967

subject

Has Abstract

pub_date

2019-03-01 00:00:00

pages

508-518

issue

eissn

1759-7706

issn

1759-7714

journal_volume

pub_type

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Characteristics and long-term outcomes of advanced pleural mesothelioma in Latin America (MeSO-CLICaP).