Katie received her PhD and MA from UC Berkeley Division of Biostatistics under the supervision of Mark van der Laan. Her research at Berkeley included developing computationally intensive statistical methods for analysis of microarray data with applications in cancer biology. After graduating, she did a postdoc at UC Berkeley with Sandrine Dudoit. She developed Bioconductor open source software packages for clustering and multiple hypothesis testing. In 2003, she began a comparative genomics NIH Postdoctoral Fellowship in the labs of David Haussler and Todd Lowe in the Center for Biomolecular Science & Engineering at UC Santa Cruz. In 2005, she joined the faculty at the UC Davis Genome Center and Department of Statistics. She moved to UCSF in Fall 2008.