Study of Human Epidermal Growth Factor Receptor 2 (HER2) Expression in Participants With Early/Metastatic Breast Cancer in Saudi Arabia
Study of Human Epidermal Growth Factor Receptor 2 (HER2) Expression in Participants With Early/Metastatic Breast Cancer in Saudi Arabia
This is a retrospective, multicenter study, consisting of chart review of Saudi Arabian
 participants diagnosed with breast cancer between 2007 and 2013 and with available human
 epidermal growth factor receptor 2 (HER2) testing. Data on survival will be collected through
 2015.
Inclusion Criteria:

 -  Initially diagnosed with breast cancer

 -  Has a proven result of HER2 testing by immunohistochemistry (IHC), fluorescent in situ
 hybridization (FISH) or any other in situ hybridization (ISH) method

 -  Alive or not alive

 Exclusion Criteria:

 - Inconclusive, equivocal or unavailable result of HER2/neu overexpression by IHC and FISH