Mirna is a clinical stage biopharmaceutical company developing a pipeline of microRNA-based oncology therapeutics and is the first to bring a synthetic microRNA mimic into clinical development for the treatment of cancer. Mirna's lead product candidate, MRX34, a mimic of naturally occurring microRNA-34 (miR-34), is being studied in a Phase 1 clinical trial which has included patients with primary liver cancer, advanced solid tumors and hematological malignancies. miR-34 is one of the most widely published microRNAs and is considered a key regulator of multiple oncogenes across key oncogenic pathways, with the capacity to regulate more than 30 different oncogenes and repress immune checkpoint signaling molecules, including PD-L1. The potential capacity to simultaneously affect multiple pathways and processes that are critical to cancer cell viability may make mimics of tumor suppressor microRNAs an important new class of anti-cancer agents. Mirna plans to develop MRX34 as a monotherapy and in combination with other therapies.