Corrections

In 2012, around the world, there were about 693,000 deaths from colorectal cancer, which accounts for 8% of all cancer deaths, making it the fourth leading cause of cancer death, after lung cancer, liver cancer and stomach cancer.

The development of new screening methods has become important due to an increasing incidence, as is the case for CRC.

Advanced cancer has a poor survival, whereas when diagnosed at an early stage, survival is relatively good.

Early detection will identify cancer when it is still localized and curable, preventing not only mortality, but also reducing morbidity and costs.

The use of serum biomarkers as an indicator of disease in cancer screening programs could provide a promising alternative to existing methods.

The aim of this study was to search and validation of peptide biomarkers specific for blood sera of patients with colorectal cancer.

Samples that the first stage of work were used to identify the peptides were analyzed in SWATH mode, the spectra are taken while maintaining all other chromatographic (gradient, flow rate, column for separation) and mass spektromericheskih (parameters fragmentation, ionization source) parameters.