Table 3.

Clinicopathological features of patients and comparison with and without ESR1 mutation.

		ESR1		p
		Positive	Negative
N		27	185
Age	Median (range)	60 (36–83)	60 (33–95)	0.32 *
Tumor size (cm)	≤2	23	145	0.61 **
	>2	4	40
Lymph node metastasis	Positive	4	30	1.00 **
	Negative	23	155
PgR	Positive	23	154	1.00 **
	Negative	4	31
HER2	Positive	2	24	0.54 **
	Negative	25	161
Histological grade	1	11	77	1.00 **
	2/3	16	108
Prognosis	No recurrence	24	175	0.22 **
	Recurrence	3	10

HER2—Human epidermal growth factor receptor 2, PgR—progesterone receptor. * Mann–Whitney U test, ** Fisher’s exact test.