Long noncoding RNAs (lncRNAs) are a class of nonprotein‐coding RNA transcripts with over 200 nucleotides,3 which are involved in the regulation of many cellular processes, such as tumor growth, apoptosis, proliferation, invasion, and autophagy.4 The lncRNA H19 is transcribed from a maternally expressed imprinted gene that locates on the chromosome 11p15.5,5 and an upregulation of H19 has been detected in certain cancers (breast,6 stomach, and bladder7, 8). The gene discussed is H19; the disease is cancer.