PD-L1 Expression in TNBC: A Predictive Biomarker of Response to Neoadjuvant Chemotherapy?

Table 1

Clinicopathological features of the study population.

Characteristics	Number of patients (%)
Age (y)
≤50	30 (55%)
>50	24 (45%)
Pre-NACT tumor size (cT)
≤2 cm	7 (13%)
>2 cm	47 (87%)
Pre-NACT nodal status (cN)
Positive	24 (45%)
Negative	30 (55%)
Histotype
Ductal	51 (94%)
Lobular	1 (2%)
Others	2 (4%)
Nuclear grade
Grades 1-2	0
Grade 3	54 (100%)
Ki-67
<50%	14 (26%)
≥50%	40 (74%)
Post-NACT surgery
Mastectomy	30 (55%)
Segmental mastectomy	24 (45%)
Complete pathological response (pCR) to NACT	19 (35%)