NCIt definition : A fusion protein encoded by the YAP1/TFE3 fusion gene. This protein is comprised of
the very proximal N-terminal portion of the transcriptional coactivator YAP1 protein,
including the proline-rich domain, fused to much of the transcription factor E3 protein,
including the acidic transcriptional activation, basic helix-loop-helix DNA binding
and leucine zipper dimerization domains.;