Skip to main content
. 2024 Dec 20;8:282. doi: 10.1038/s41698-024-00761-0

Table 2.

Prevalence (%) of the genomic signatures HRD-gLOH, TMB, MSI, PDL1, PDL2 and PD-L1+ protein expression

Site % HRD-gLOH % TMB-H % MSI-H %PDL1 %PDL2 % PDL1 + 
ALL local BC 33.70% (2573/7636) 5.04% (527/10464) 0.37% (39/10464) 1.57% (188/11988) 1.53% (183/11988) 54.25% (1092/2013)
BCBM 52.01% (362/696) 15.51% (116/748) 2.01% (15/748) 3.53% (29/822) 3.41% (28/822) 38.73% (55/142)
N-CNS 31.55% (3237/10260) 9.82% (1395/14210) 0.23% (32/14210) 1.12% (174/15516) 1.08% (168/15516) 26.21% (615/2346)
ER+/HER2− local BC 31.48% (119/378) 3.41% (19/557) 0.36% (2/557) 0.94% (6/641) 0.78% (5/641) 40.00% (14/35)
BCBM 43.17% (79/183) 11.40% (22/193) 1.04% (2/193) 0.94% (2/212) 0.47% (1/212) 23.08% (9/39)
N-CNS 29.65% (126/425) 8.92% (51/572) 0.17% (1/572) 0.32% (2/634) 0.32% (2/634) 12.99% (10/77)
ER+/HER2+ local BC 19.57% (9/46) 2.78% (2/72) 0.00% (0/72) 1.19% (1/84) 1.19% (1/84) 42.86% (3/7)
BCBM 26.67% (16/60) 9.68% (6/62) 0.00% (0/62) 1.52% (1/66) 1.52% (1/66) 27.27% (3/11)
N-CNS 47.37% (18/38) 19.57% (9/46) 0.00% (0/46) 0.00% (0/49) 0.00% (0/49) 14.29% (1/7)
ER−/HER2+ local BC 32.26% (10/31) 8.70% (4/46) 0.00% (0/46) 1.75% (1/57) 1.75% (1/57) 100.00% (5/5)
BCBM 33.33% (23/69) 21.33% (16/75) 2.67% (2/75) 0.00% (0/85) 0.00% (0/85) 57.14% (4/7)
N-CNS 34.38% (11/32) 4.26% (2/47) 0.00% (0/47) 3.92% (2/51) 3.92% (2/51) 42.86% (3/7)
ER−/HER2− local BC 52.25% (186/356) 2.70% (14/518) 0.19% (1/518) 3.42% (20/585) 3.59% (21/585) 50.00% (30/60)
BCBM 70.45% (174/247) 17.41% (47/270) 2.59% (7/270) 7.72% (23/298) 7.72% (23/298) 48.33% (29/60)
N-CNS 43.52% (84/193) 10.04% (27/269) 0.74% (2/269) 3.78% (11/291) 3.44% (10/291) 21.43% (6/28)

The significant alterations in brain metastases (BCBM) compared to local breast cancers (BC) are in bold letters. PDL1+ protein expression was lower in all the BMs compared to BCs except the ER-/HER2- BCBM subtype that is similar to BC and higher than non-central nervous system (N-CNS) metastases.