Background: The epidermal growth factor receptor (EGFR) also known as HER1 or ErbB1 is
a prominent member of the erbB proto-oncogene family, which encodes a receptor tyrosine
kinase with a pivotal role in the regulation of cell growth and differentiation. The aim of this
research was to study the CA repeat polymorphism in intron I of EGFR among the patients
with breast cancer and healthy controls. We have also evaluated risks for breast cancer, age
of onset and grade of tumor associated with the CA repeat polymorphism. Methods: In the
