Abstract
The field of personalized medicine, based on genetic information, represents a tremendous but largely unfulfilled opportunity for a future generation of therapies [1]. While better clinical outcomes have been realized using predictive biomarkers in some forms of cancer [2], the influence of genetic information on the treatment of most other human diseases has been limited. However, in the case of the inherited genetic disease cystic fibrosis (CF), pre-emptive possibilities have recently been uncovered. In particular, an investigational drug known as VX-770, has demonstrated great promise in clinical trials in patients with a specific cystic fibrosis transmembrane conductance regulator (CFTR) allele selected for clinical investigation based on data from in vitro studies [3,4]. This article highlights some of the opportunities and challenges associated with developing novel genotype-directed therapies for CF.
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