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Table 1 Description of the features analysed in the clinical records

From: Expression of PD-L1 in primary breast carcinoma and lymph node metastases

Feature

Description

Values

ER

Oestrogen receptor expression

0 – negative

1 – positive

HER2

HER2 expression

0 – negative

1 – positive

KI67

Ki-67 expression

0 - < 14%

1 - > = 14%

PR

Progesterone receptor expression

0 – negative

1 - positive

Molecular Subtype

Molecular subtype of the primary tumour

1 - Luminal A

2 - Luminal B

3 - HER2 positive

4 - Basal

Histological Grade

Histological grade

1 - G1

2 - G2

3 - G3

Tumour Size

Primary tumour size

1 - < 2 cm

2–2-5 cm

3 - > 5 cm

Metastasis

Presence of Metastasis

0 – negative

1 – positive

PD-L1 P

PD-L1 of the primary tumour

0 – negative

1 – positive

TN Molecular Subtype

Molecular subtype of the TN tumour

1 – Luminal

2 – Mesenchymal

3 – BLIS

4 - BLIA