Periostin, along with age, histological type, lymph node metastasis, and triple-negative breast cancer were shown to be related to the prognosis (<i>P</i> = 0.001, 0.002, 0.001, 0.004, and 0.001, respectively).

<p>Periostin, along with age, histological type, lymph node metastasis, and triple-negative breast cancer were shown to be related to the prognosis (<i>P</i> = 0.001, 0.002, 0.001, 0.004, and 0.001, respectively).