Here we describe TRACE (T7 polymerase-driven continuous editing), a method that enables continuous, targeted mutagenesis in human cells using a cytidine deaminase fused to T7 RNA polymerase. TRACE induces high rates of mutagenesis over multiple cell generations in genes Reprints and permissions information is available at www.nature.com/reprints.

SummaryOffering human papillomavirus (HPV) vaccination to men who have sex with men up to age 40 years via genitourinary clinics will have a large impact on HPV-related diseases and is likely to be cost-effective.