Rigontec GmbH is a biopharmaceutical company that develops RNA-based immunotherapeutics for the treatment of cancer and viral diseases. The company develops ImOl100, a compound stimulating the immune receptor retinoic acid-inducible gene I, which recognizes viral RNA. Its ImOl100 is also a minimal mimic of naturally occurring 3pRNA, a motif typically occurring in viral RNAs. The company’s compounds avoid the pitfalls of cancer vaccines, checkpoint inhibitors, and therapeutics based on the identification of tumor antigens. Rigontec GmbH was founded in 2014 and is based in Planegg, Germany. As of October 26, 2017, Rigontec GmbH operates as a subsidiary of Merck & Co., Inc.