Table 2 Treatment-related toxicities and adverse events.

From: Brain radiotherapy, tremelimumab-mediated CTLA-4-directed blockade +/− trastuzumab in patients with breast cancer brain metastases

A. Treatment-related toxicities

 Events, Total (# patients)

HER2− (n = 19)a

HER2+ (n = 6)

AEs

104 (15)

42 (6)

SAEs

17 (7)

0 (0)

Grade 3 AEs

15 (6)

1 (1)

Grade 4 AEs

0 (0)

0 (0)

B. Treatment-related AEs in 2 or more patients

 AE, Any Grade, n (%)

HER2− (n = 19)a

HER2+ (n = 6)

Colitis

6 (32)

0

Diarrhea

6 (32)

0

Fatigue

6 (32)

3 (50)

Nausea

6 (32)

3 (50)

Anorexia

6 (32)

1 (17)

Vomiting

3 (16)

3 (50)

Weight loss

3 (16)

2 (33)

Rash, maculo-papular

3 (16)

1 (17)

Mucositis oral

1 (6)

3 (50)

Generalized muscle weakness

3 (16)

0

Abdominal pain

2 (11)

1 (17)

Dry mouth

2 (11)

1 (17)

Dysgeusia

2 (11)

1 (17)

Hypothyroidism

2 (11)

0

Headache

2 (11)

0

Alkaline phosphatase increased

2 (11)

0

Skin Hyperpigmentation

0

2 (33)

Constipation

1 (6)

1 (17)

Hyperthyroidism

1 (6)

1 (17)

Alopecia

1 (6)

1 (17)

Dry skin

1 (6)

1 (17)

Decreased T3, Free

1 (6)

1 (17)

Pruritus

1 (6)

1 (17)

 AE, Grade 3, n (%)

Colitis

3 (16)

0

Diarrhea

2 (11)

0

Rash maculo-papular

1 (6)

1 (17)

  1. HER2 human epidermal growth factor receptor 2, AE adverse event, SAE serious adverse event.
  2. aOne patient not included due to early consent withdrawal.