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. 2025 Oct 8;23:546. doi: 10.1186/s12916-025-04364-9

Table 2.

TEAEs elicited by bireociclib combination therapy (part 2), with TEAEs occurring in ≥ 20% of all treated patients – safety set

Bireociclib plus NSAI
(N = 35)
Bireociclib plus FULV
(N = 95)
All grades Grade 2 Grade 3 Grade 4 All grades Grade 2 Grade 3 Grade 4
All 35 (100.0) 34 (97.1) 26 (74.3) 4 (11.4) 95 (100) 94 (98.9) 65 (68.4) 12 (12.6)
Leukopenia 34 (97.1) 17 (48.6) 8 (22.9) 0 90 (94.7) 57 (60.0) 23 (24.2) 0
Diarrhea 33 (94.3) 17 (48.6) 4 (11.4) 0 91 (95.8) 45 (47.4) 18 (18.9) 0
Neutropenia 30 (85.7) 12 (34.3) 13 (37.1) 0 88 (92.6) 49 (51.6) 27 (28.4) 5 (5.3)
Anemia 21 (60.0) 8 (22.9) 5 (14.3) 0 72 (75.8) 28 (29.5) 13 (13.7) 0
Hypertriglyceridemia 25 (71.4) 10 (28.6) 1 (2.9) 1 (2.9) 60 (63.2) 13 (13.7) 9 (9.5) 0
Elevated AST 25 (71.4) 1 (2.9) 0 0 58 (61.1) 12 (12.6) 5 (5.3) 1 (1.1)
Blood creatinine increased 23 (65.7) 8 (22.9) 0 0 56 (58.9) 9 (9.5) 0 0
Thrombocytopenia 20 (57.1) 7 (20.0) 2 (5.7) 0 58 (61.1) 9 (9.5) 8 (8.4) 4 (4.2)
Elevated ALT 25 (71.4) 4 (11.4) 0 0 53 (55.8) 5 (5.3) 4 (4.2) 1 (1.1)
Hypercholesterolemia 19 (54.3) 2 (5.7) 1 (2.9) 0 52 (54.7) 3 (3.2) 0 1 (1.1)
Hyperuricemia 20 (57.1) 0 0 0 48 (50.5) 1 (1.1) 0 0
Nausea 15 (42.9) 2 (5.7) 0 0 45 (47.4) 10 (10.5) 0 0
Hypokalaemia 19 (54.3) 0 4 (11.4) 1 (2.9) 36 (37.9) 8 (8.4) 7 (7.4) 1 (1.1)
Vomiting 15 (42.9) 4 (11.4) 0 0 38 (40.0) 16 (16.8) 1 (1.1) 0
Weight decrease 15 (42.9) 1 (2.9) 1 (2.9) 0 35 (36.8) 9 (9.5) 0 0
Urinary tract infection 10 (28.6) 7 (20.0) 0 0 34 (35.8) 21 (22.1) 2 (2.1) 0
Blood lactate dehydrogenase increased 15 (42.9) 0 0 0 29 (30.5) 0 (0) 0 0
Hypoalbuminemia 12 (34.3) 0 0 0 30 (31.6) 3 (3.2) 0 0
Fatigue 10 (28.6) 0 0 0 26 (27.4) 2 (2.1) 2 (2.1) 0
Hyperglycaemia 11 (31.4) 0 0 0 23 (24.2) 2 (2.1) 0 0
Gamma-glutamyltransferase increase 11 (31.4) 2 (5.7) 0 1 (2.9) 21 (22.1) 4 (4.2) 3 (3.2) 1 (1.1)
Hypophosphatemia 5 (14.3) 0 0 0 26 (27.4) 1 (1.1) 0 0
Hyponatremia 8 (22.9) 0 0 0 18 (18.9) 1 (1.1) 0 0

Data are presented as number of patients (incidence)ALT alanine aminotransferase; AST aspartate aminotransferase; FULV fulvestrant; NSAI non-steroidal aromatase inhibitor; TEAEs treatment-emergent adverse events