With sweeping advances in precision delivery systems and manipulation of the genomes and transcriptomes of various cell types, medical biotechnology offers unprecedented selectivity for and control of a wide variety of biological processes, forging new opportunities for therapeutic interventions. This perspective summarizes state-of-the-art gene therapies enabled by recent innovations, with an emphasis on the expanding universe of molecular targets that govern the activity and function of primary sensory neurons and which might be exploited to effectively treat chronic pain. Ion channels in primary sensory neurons are molecular targets for the treatment of chronic pain. In this Perspective, Ovsepian and Waxman assess prospective gene therapies directed towards such targets and discuss their translational potential to enable precision pain medicine.