PTK6 and neoplasm: The inconsistent survival analysis results of the LNM + group and LNM- group may be due to the different biological functions and prognostic value of PTK6 in TNBC patients with different lymph node metastasis status, or perhaps PTK6 is only negatively associated with the prognosis of patients with metastatic triple-negative breast cancer, or it may also be related to the low positive rate of PTK6 in the LNM- group, and the limited ability to promote tumor metastasis and recurrence.