H19 and lung cancer: In contrast, overexpression or loss of imprinting (LOI) of H19 has been observed in a wide variety of tumors, including bladder carcinoma [10,11], epithelial ovarian cancer [12], esophageal cancer [13], lung cancer [14], breast adenocarcinoma [15,16], endometrial cancer [17], and invasive cervical carcinoma [18].