Cell-Free DNA Variables including Gene Mutations in CA15-3 Normal Breast Cancer Reflect Prognosis

Table 2

Clinical characteristics of the BC patients ().

Characteristics	Total cases,	%
Age at diagnosis (years)
≤50	32	47.06
>50	36	52.94
Molecular subtype
Triple-negative	6	8.82
HER2^+ (any ER/PR)	14	20.59
HER2^- (ER or/and PR^+)	48	70.59
Tumor size (cm)
≤2	31	45.59
>2	37	54.41
Tumor stage
I/II	41	60.29
III/IV	27	39.71
Metastatic status
No	36	52.94
Yes	32	47.06
Distant metastatic status
No	55	80.88
Yes	13	19.12

HER2: human epidermal growth factor receptor 2; ER/PR: estrogen/progesterone receptor.