Roche head of product comms Susie Hackett is seeking to replace Brown, who will leave at the end of next week, as part of a broader recruitment drive to build an overall comms team of 11 PROs.
Brown's replacement will report to whoever fills a currently vacant PR manager job, said Hackett. Roche has just lost UK PR manager Rebecca Hunt to Porter Novelli (PRWeek, 28 January).
Brown has worked on brands such as Herceptin, MabThera and Xeloda.
She joined Roche around two years ago from Manning Selvage & Lee, where she was a senior account executive in the UK healthcare team.
After travelling, Brown plans to study for an MBA.