Non-coding RNA (ncRNA) refers to a type of RNA molecule that does not code for proteins but plays important regulatory roles in gene expression and cellular processes. There are various types of ncRNAs, including microRNAs, long non-coding RNAs, and small interfering RNAs, among others. Research in the field of ncRNA focuses on understanding the functions and mechanisms of action of these molecules, as well as their implications in various diseases such as cancer, neurodegenerative disorders, and cardiovascular diseases. Scientists study how ncRNAs regulate gene expression, protein synthesis, and other cellular processes, and how dysregulation of ncRNAs can contribute to disease development. Overall, research in the field of ncRNA is expanding our knowledge of the complexity of gene regulation and has the potential to lead to the development of novel diagnostic tools and therapeutic strategies for various diseases.