Table 3 The frequency of grade 1–2 and grade 3–4 fluoropyrimidines-related adverse events in patients with TYMS genotypes that predict increased and decreased TS expression.

From: The prevalence and clinical relevance of 2R/2R TYMS genotype in patients with gastrointestinal malignancies treated with fluoropyrimidine-based chemotherapy regimens

Adverse events

TYMS genotypes that predict increased TS expression (N = 55)

TYMS genotypes that predict decreased TS expression (N = 71)

Grade 1–2

Grade 3–4

Grade 1–2

Grade 3–4

Hematological

N (%)

N (%)

N (%)

N (%)

 Neutropenia

16 (29)

3 (5)

21 (30)

4 (6)

 Anemia

10 (18)

0 (0)

16 (23)

0 (0)

 Thrombocytopenia

4 (7)

0 (0)

6 (8)

0 (0)

 Neutropenic fever

 

0 (0)

0 (0)

0 (0)

Non-hematological

N (%)

N (%)

N (%)

N (%)

 Mucositis

4 (7)

3 (5)

4 (6)

3 (4)

 Nausea

17 (31)

2 (4)

23 (32)

2 (3)

 Vomiting

3 (5)

2 (4)

5 (7)

1 (1)

 Diarrhea

4 (7)

9 (16)

7 (13)

11 (15)

 Neurotoxicity

3 (5)

0 (0)

3 (4)

4 (6)

 Skin toxicity

3 (5)

3 (5)

1 (1)

8 (11)

 Fatigue

30 (55)

2 (4)

27 (38)

5 (7)

 Vasospasm

0 (0)

1 (2)

0 (0)

4 (6)