Clinical and molecular characteristics of triple-negative breast cancer patients in Northern Israel: single center experience

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Table 1 Clinical, molecular and histopathological characteristics of triple-negative breast cancer patients

Characteristic	N	Percentage of total (%)
Age
>60 years	31	25.40
≤60 years	91	74.60
No. of children
0	24	19.8%
1-3	66	54.5%
4+	31	25.6%
Missing	1
Ethnicity
Jewish	101	82.80
Arabic	21	17.20
1st degree family history
Positive for breast cancer	30	24.60
Negative for breast cancer	92	75.40
BRCA 1–2 mutation
Positive	22	73.33
Negative	8	26.67
Histopathological type
Invasive ducal carcinoma	115	94.30
Medullary carcinoma	3	2.45
Infiltration lobular carcinoma	4	3.28
Involved lymph nodes ^a
Absent	78	66
1-3 nodes	27	23
≥4 nodes	13	11
Tumor size
≤2 cm	66	54.00
>2.1 cm	56	46
Surgical intervention ^b
Lumpectomy	90	76.30
Mastectomy	28	23.7
Adjuvant chemotherapy ^c
Yes	85	81
No	20	19

Notes
^aExact number of involved lymph nodes missing in four patients.
^bFour patients who had metastatic disease at presentation were not included in surgical and chemotherapy treatment.
^cAdjuvant treatment data was missing for two patients, 11 patients received neoadjuvant treatment.