Identification of Cell-Free Circulating MicroRNAs for the Detection of Early Breast Cancer and Molecular Subtyping

Table 1

Clinicopathological characteristics of the cases.

Characteristics	Value (n,%)
Age, years
Median	54.6
Range	41-69
Molecular subtype
Luminal A	12 (22.2%)
Luminal B	12 (22.2%)
Luminal B HER2 positive	12 (22.2%)
Triple negative	12 (22.2%)
HER 2+	6 (11.1%)
Stage, n
Stage I	21 (38.9%)
Stage II	33 (61.1%)
Tumor size (TNM)
T1	30 (55.6%)
T2	20 (37%)
T3	4 (7.4%)
Lymph node status (TNM)
N0	33 (61.1%)
N1	21 (38.9%)
Histological type
Ductal	44 (81.5%)
Others	10 (18.5%)

TNM classification of malignant tumors: T describes the tumor size of primary tumor; N describes regional lymph nodes that are involved; M describes distant metastasis.