Rather than focus on making one drug at a time, Creyon Bio Inc. is taking its more than $40 million in seed and series A financing to build its platform to understand the genetic roots of disease and then create precision medicines. Creyon is creating datasets to engineer RNA-based and single-stranded oligonucleotide-based medicines (OBMs) in addition to DNA and RNA editing systems. Those datasets are tailored to deliver models that create OBMs that are safe and effective for treating both common diseases and rare diseases.