| [genetic susceptibility and risk of gastric cancer in a human population of cauca, colombia]. | gastric cancer (gc) is the main cause of mortality by cancer in colombia. glutathione s-transferase (gst) enzymes are involved in the detoxification of many environmental carcinogens. the homozygous deletions of glutathione s-transferase m1 (gstm1-0) and glutathione s-transferase t1 (gstt1-0) have been associated with several types of cancer. the risk to develop gc has been associated with environmental factors and helicobacter pylori infection. the tumor necrosis factor (tnf-alpha) and its leve ... | 2004 | 15495595 |