Table 2 Treatment-related adverse events (AE).

From: Phase 1b clinical trial of ado-trastuzumab emtansine and ribociclib for HER2-positive metastatic breast cancer

Adverse event (AE) type

AE of any grade

Grade 1 AE

Grade 2 AE

Grade 3 AE

Grade 4 AE

Platelet count decreased

11(91.67%)

5(41.67%)

4(33.33%)

2(16.67%)

0(0%)

Anemia

10(83.33%)

4(33.33%)

3(25%)

3(25%)

0(0%)

Neutrophil count decreased

9(75%)

0(0%)

4(33.33%)

4(33.33%)

1(8.33%)

White blood cell decreased

8(66.67%)

2(16.67%)

2(16.67%)

4(33.33%)

0(0%)

Fatigue

7(58.33%)

4(33.33%)

3(25%)

0(0%)

0(0%)

Aspartate aminotransferase increased

6(50%)

3(25%)

2(16.67%)

1(8.33%)

0(0%)

Alanine aminotransferase increased

5(41.67%)

3(25%)

1(8.33%)

1(8.33%)

0(0%)

Electrocardiogram QT corrected interval prolonged

5(41.67%)

4(33.33%)

1(8.33%)

0(0%)

0(0%)

Lymphocyte count decreased

5(41.67%)

2(16.67%)

1(8.33%)

2(16.67%)

0(0%)

Nausea

5(41.67%)

4(33.33%)

1(8.33%)

0(0%)

0(0%)

Blood bilirubin increased

3(25%)

2(16.67%)

1(8.33%)

0(0%)

0(0%)

Cough

3(25%)

3(25%)

0(0%)

0(0%)

0(0%)

Diarrhea

3(25%)

2(16.67%)

1(8.33%)

0(0%)

0(0%)

Epistaxis

3(25%)

3(25%)

0(0%)

0(0%)

0(0%)

Mucositis oral

3(25%)

3(25%)

0(0%)

0(0%)

0(0%)

Alkaline phosphatase increased

2(16.67%)

2(16.67%)

0(0%)

0(0%)

0(0%)

Bruising

2(16.67%)

2(16.67%)

0(0%)

0(0%)

0(0%)

Creatinine increased

2(16.67%)

0(0%)

2(16.67%)

0(0%)

0(0%)

Dry mouth

2(16.67%)

1(8.33%)

1(8.33%)

0(0%)

0(0%)

Fever

2(16.67%)

0(0%)

2(16.67%)

0(0%)

0(0%)

Hypophosphatemia

2(16.67%)

0(0%)

1(8.33%)

1(8.33%)

0(0%)

Rash maculo-papular

2(16.67%)

2(16.67%)

0(0%)

0(0%)

0(0%)

Vomiting

2(16.67%)

1(8.33%)

1(8.33%)

0(0%)

0(0%)

Weight loss

2(16.67%)

2(16.67%)

0(0%)

0(0%)

0(0%)

Activated partial thromboplastin time prolonged

1(8.33%)

0(0%)

1(8.33%)

0(0%)

0(0%)

Alopecia

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Arthritis

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Bloating

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Constipation

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Cystitis noninfective

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Dry eye

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Febrile neutropenia

1(8.33%)

0(0%)

0(0%)

1(8.33%)

0(0%)

Gastroesophageal reflux disease

1(8.33%)

0(0%)

1(8.33%)

0(0%)

0(0%)

Gastrointestinal disorders—other, specify

1(8.33%)

0(0%)

1(8.33%)

0(0%)

0(0%)

Headache

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Hyperhidrosis

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Hypokalemia

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Infusion related reaction

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Lung infection

1(8.33%)

0(0%)

1(8.33%)

0(0%)

0(0%)

Myalgia

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Oral hemorrhage

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Pain

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Peripheral motor neuropathy

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Renal and urinary disorders—other, specify

1(8.33%)

0(0%)

0(0%)

1(8.33%)

0(0%)

Salivary duct inflammation

1(8.33%)

1(8.33%)

0(0%)

0(0%)

0(0%)

Thrombotic thrombocytopenic purpura

1(8.33%)

0(0%)

1(8.33%)

0(0%)

0(0%)

Upper respiratory infection

1(8.33%)

0(0%)

1(8.33%)

0(0%)

0(0%)

Urinary tract infection

1(8.33%)

0(0%)

0(0%)

1(8.33%)

0(0%)