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Table 3 Association with the number of alterations*

From: MET alterations detected in blood-derived circulating tumor DNA correlate with bone metastases and poor prognosis

Variables

Median N of alterations (95% CI) (range)

P value (univariable)

t statistic (multivariable)

P value (multivariable)

Overall

1 (1–1) (0–26)

   

Tumor type

 Gastrointestinal

2 (1–2) (0–26)

0.031

 Brain

0 (0–0) (0–5)

< 0.001

 Lung

2 (2–3) (0–21)

< 0.001

Genomic alterations

MET

4 (3–6) (1–21)

< 0.001

3.35

0.001

TP53

3 (3–3) (1–21)

< 0.001

6.86

< 0.001

EGFR

3 (3–4) (1–26)

< 0.001

PIK3CA

5 (4–6) (1–26)

< 0.001

7.31

< 0.001

BRAF

5 (4–6) (1–26)

< 0.001

6.54

< 0.001

KRAS

4 (3–4) (1–26)

< 0.001

6.01

< 0.001

MYC

5 (3–6) (2–7)

< 0.001

2.70

0.007

Metastatic/recurrence at the time of blood draw

2 (1–2) (0–26)

< 0.001

Metastatic sites

 Lymph node

2 (2–3) (0–21)

< 0.001

2.05

0.041

 Bone

2 (2–3) (0–26)

< 0.001

 Liver

2 (2–3) (0–26)

< 0.001

 Lung

2 (1–3) (0–19)

0.010

 Brain

2 (1–3) (0–21)

< 0.001

 Adrenal

2 (2–4) (0–20)

< 0.001

2.06

0.040

  1. *Only variables with ≥ 20 patients in the overall population were tested. Only significant variables in the univariable analysis (non-parametric Mann-Whitney U test) were included in the multivariable model (multiple linear regression), with the final model containing only significant covariates (stepwise model selection). The t statistics test the unique contribution of each variable; the higher the t statistics, the higher the association/contribution in the model