Background: Gastric cancer is the second and fourth most common cancer in Iranian men
and women, respectively, but it is the first leading cause of cancer deaths in Iran. Most
Iranian patients with gastric cancer are diagnosed at an advanced stage of disease when
the conventional treatments have no effect on improving the survival. So, early gastric
cancer detection is of high priority in order to decrease its high mortality rate in Iran. HOTAIR
is a long non-coding RNA which its overexpression has been documented in different types …