VeriStrat(®) has prognostic value in advanced stage NSCLC patients treated with erlotinib and sorafenib.
BACKGROUND
The serum proteomic test VeriStrat has been shown to be able to classify advanced non-small cell lung cancer (NSCLC) patients for overall survival (OS) after treatment with epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs). In this study, VeriStrat was evaluated as a pre-treatment stratification tool in patients with advanced stage NSCLC for treatment with the combination of erlotinib and sorafenib, considering both OS and progression-free survival (PFS) as end points.


METHODS
Serum samples from 50 patients treated within the context of a phase II trial of first-line erlotinib and sorafenib were analysed with VeriStrat, a fully locked mass spectrometry-based test that identifies patients likely to have good or poor outcome on EGFR therapy based on eight distinct features in mass spectra. Analysis was performed fully blinded to all clinical data, and then the outcome data were analysed with respect to the obtained serum classifications.


RESULTS
VeriStrat classified pre-treatment samples into two groups, VeriStrat Good and VeriStrat Poor, which were significantly different in OS (hazard ratio (HR) 0.30, log-rank P=0.009) and in PFS (HR 0.40, log-rank P=0.035).


CONCLUSIONS
VeriStrat has shown its potential for stratification of unselected, advanced stage NSCLC patients treated in first line with a combination of erlotinib and sorafenib.
Department of Pulmonary Diseases, VU University Medical Center, P.O. Box 7057, Amsterdam 1007 MB, The Netherlands.
J L
JL
Kuiper
J S W
JS
Lind
H J M
HJ
Groen
J
J
Roder
J
J
Grigorieva
H
H
Roder
A M C
AM
Dingemans
E F
EF
Smit
D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D002289:Carcinoma, Non-Small-Cell Lung / Q000188:drug therapy* / Q000401:mortality / Q000473:pathology; D018572:Disease-Free Survival; D066246:ErbB Receptors / Q000037:antagonists & inhibitors*; D000069347:Erlotinib Hydrochloride; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000188:drug therapy* / Q000401:mortality / Q000473:pathology; D008297:Male; D009367:Neoplasm Staging; D009536:Niacinamide / Q000008:administration & dosage / Q000031:analogs & derivatives*; D010671:Phenylurea Compounds / Q000008:administration & dosage*; D011379:Prognosis; D047428:Protein Kinase Inhibitors / Q000008:administration & dosage*; D011799:Quinazolines / Q000008:administration & dosage*; D040262:Receptors, Vascular Endothelial Growth Factor / Q000037:antagonists & inhibitors*; D000077157:Sorafenib
D010671:Phenylurea Compounds; D047428:Protein Kinase Inhibitors; D011799:Quinazolines; D009536:Niacinamide; D000077157:Sorafenib; D000069347:Erlotinib Hydrochloride; D066246:ErbB Receptors; D040262:Receptors, Vascular Endothelial Growth Factor