Introduction: Triple negative (TN) breast cancers are defined by a lack of expression of oestrogen,progesterone, and HER2 receptors. They tend to have a higher grade, with a poorer outcome compared to non-TN breast cancers.
Objective: The aim of this study is to determine the incidence of TN breast cancer in anAsian country consisting of Malays, Chinese and Indians, and to determine the factors associated with this typeof breast cancer.
Results: The incidence of TN breast cancer in the University Malaya Medical Center is 17.6%.There is no significant difference amongst the Malays, Chinese and Indians. In bivariate analysis, TN breastcancer was significantly associated with younger age and Grade 3. However, in multivariate analysis usinglogistic regression, TN breast cancer was only associated with Grade 3.
Conclusion: The incidence of TN breastcancer in our study is similar to other studies, and associated with a higher grade.