Table 4 Univariate and multivariable analysis of risk factors for vascular events (arterial/venous thrombosis and hemorrhage) after diagnosis among 985 patients with essential thrombocythemia (ET), fully annotated for driver mutations with CALR mutation type.

From: One thousand patients with essential thrombocythemia: the Mayo Clinic experience

Follow-up in years, median (range): 8.5 (0.01–52.7)

Arterial thrombosis-free survival

Venous thrombosis-free survival

Hemorrhage-free survival

Events; n (%): 125 (13)

Events; n (%): 72 (7)

Events; n (%): 107/968 (11)

Driver mutations

Univariate

P value

HR (95% CI)

Age-adjusted

P value

HR (95% CI)

Gender-adjusted

P value

HR (95% CI)

Univariate

P value

HR (95% CI)

Age-adjusted

P value

HR (95% CI)

Gender-adjusted

P value

HR (95% CI)

Univariate

P value

HR (95% CI)

Age-adjusted

P value

HR (95% CI)

Gender-adjusted

P value

HR (95% CI)

JAK2 vs type 1 CALR

0.12

1.5 (0.9–2.6)

0.37

0.05

1.7 (1.0–2.9)

0.14

1.7 (0.8–3.5)

0.19

1.6 (0.8–3.3)

0.06

1.9 (0.9–4.1)

0.08

1.7 (0.9–3.2)

0.21

0.05

1.9 (1.0–3.5)

JAK2 vs type 2 CALR

0.32

0.81

0.21

0.50

0.64

0.36

0.37

0.77

0.29

JAK2 vs MPL

0.99

0.67

0.88

0.99

0.99

0.99

0.12

0.51 (0.2–1.2)

0.25

0.15

0.54 (0.2–1.3)

JAK2 vs triple negative

0.02

3.0 (1.2–7.5)

0.04

2.6 (1.03–6.3)

0.02

3.0 (1.2–7.4)

0.03

4.9 (1.2–20.2)

0.03

4.6 (1.1–19.0)

0.03

4.9 (1.2–20.2)

0.12

1.9 (0.8–4.1)

0.25

0.12

1.8 (0.8–4.0)

Type 1 CALR vs Type 2 CALR

0.73

0.64

0.65

0.54

0.52

0.46

0.58

0.49

0.52

Type 1 CALR vs MPL

0.46

0.96

0.41

0.99

0.99

0.99

0.02

0.29 (0.1–0.8)

0.08

0.4 (0.2–1.1)

0.01

0.3 (0.1–0.8)

Type 2 CALR vs MPL

0.61

0.80

0.61

0.99

0.99

0.99

0.06

0.4 (0.1–1.0)

0.26

0.06

0.4 (0.1–1.1)

Type 1 CALR vs triple negative

0.18

1.9 (0.7–5.4)

0.18

1.9 (0.7–5.5)

0.28

0.17

2.9 (0.6–13.5)

0.18

2.9 (0.6–13.3)

0.25

0.86

0.88

0.96

Type 2 CALR vs triple negative

0.12

2.3 (0.81–6.4)

0.10

2.4 (0.84–6.7)

0.17

2..1 (0.7–5.9)

0.08

3.9 (0.8–17.9)

0.08

3.9 (0.8–18.1)

0.11

3.5 (0.8–16.3)

0.52

0.46

0.61

MPL vs triple negative

0.10

3.0 (0.81–11.2)

0.28

0.13

2.8 (0.7–10.4)

0.99

0.99

0.99

0.02

3.6 (1.2–10.9)

0.09

2.6 (0.9–7.6)

0.03

3.4 (1.1–10.2)

  1. Bold value boxes represent variables of significance.