Subject area	Biochemistry
More specific subject area	Peptidomics, Ovarian Cancer Biomarkers
Type of data	Table, LC-MS/MS data and identification data
How data were acquired	Peptides were analyzed on a TripleTOF 5600+ mass spectrometer with a NanoSpray III ion source (Sciex, Canada) coupled with a NanoLC Ultra 2D+ nano-HPLC system (Eksigent, USA)
Data format	Raw and analyzed data
Experimental factors	6 ovarian cancer and 5 cirrhosis ascites samples;
	Serum samples from 20 ovarian cancer patients;
	Serum samples from 10 healthy donors.
Experimental features	Pools of 6 ovarian cancer ascites, 5 cirrhosis ascites, 10 serum samples from healthy donors and two pools of 10 ovarian cancer sera were fractionated using anion exchange QAE Sephadex A-25 sorbent and analyzed by LC-MS/MS.
Data source location	Federal Research and Clinical Center of Physical Chemical Medicine of the Federal Medical and Biological Agency of the Russian Federation, Malaya Pirogovskaya 1a, Moscow 119435, Russian Federation.
Data accessibility	Data are with this article. The LC-MS/MS data have been deposited to the ProteomeXchange Consortium via the PRIDE [6] partner repository with the dataset identifier PXD009382 and 10.6019/PXD009382.
	Direct download link: http://www.ebi.ac.uk/pride/archive/projects/PXD009382