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Table 1 Characteristics

From: Circulating ESR1 mutations at the end of aromatase inhibitor adjuvant treatment and after relapse in breast cancer patients

Characteristics

N (%)

Median age at diagnosis: years (min–max)

60.7 (47–78)

Lymph node status

Positive

32 (76%)

Negative

10 (24%)

Her2 status

Positive

3 (7%)

Negative

25 (60%)

Unknown

14 (33%)

HR status

Positive

42 (100%)

Neoadjuvant chemotherapy

Yes

4 (9.5%)

No

38 (90.5%)

Adjuvant chemotherapy

Yes

33(78.6%)

No

9(21.4%)

Adjuvant AI treatment

Yes

42(100%)

Tamoxifen before AI during adjuvant treatment

Yes

9 (21.4%)

No

33 (78.6%)

Median duration of AI adjuvant treatment: months (min–max)

60.0 (41-85)

Median delay between end of adjuvant treatment and relapse: months (min–max)

25 (2–71)

Type of relapse

Local

1 (2.4%)

Metastatic

41 (97.6%)

Median duration of follow-up during metastatic setting: months (min–max)

32.9 (1–75)