Table 1 Summary of studies, rates and synthesis by cancer group and type.

From: Systematic review of NTRK 1/2/3 fusion prevalence pan-cancer and across solid tumours

Cancer type

NTRK fusion prevalence point estimate

95% Confidence interval

Heterogeneity (I2)

Denominator

Group—Brain/CNS

 Glioma

0.51

0.20–1.30%

I2 = 0.90

7889

 Glioblastoma multiforme

1.02

0.45–2.28%

I2 = 0.55

1095

  Low grade glioma

0.94

0.31–2.17%

534

  Astrocytoma

2.22

0.90–4.51%

316

  Anaplastic astrocytoma

0.00

0.00–2.74%

133

  Diffuse astrocytoma

0.00

0.00–3.49%

104

  Oligodendroglioma

0.00

0.00–4.12%

88

  Glioma NOS

2.44

0.06–12.86%

41

  Glioma/neuroepithelial tumour

0.55

0.24–1.07%

1465

  Diffuse leptomeningeal glioneuronal tumour

10.00

2.11–26.53%

30

  Unknown neurological primary

0.22

0.05–0.63%

1386

Group—Breast Cancer

 Breast cancer

0.21

0.16–0.27%

I2 = 0.00

25,370

  Breast cancer (excludes secretory breast)

0.08

0.02–0.21%

4854

  Secretory carcinoma of the breast

88.64

75.44–96.21%

44

Group—CUP

 

 Cancer of unknown primary (CUP)

0.14

0.08–0.23%

10,636

Group—Colorectal

 Appendiceal adenocarcinoma

0.48

0.01–2.65%

208

 Appendiceal cancer

1.27

0.03–6.85%

79

 Colon adenocarcinoma

0.23

0.13–0.37%

7008

 Colon cancer

0.35

0.15–0.68%

2306

 Colorectal adenocarcinoma

0.20

0.09–0.37%

4569

 Colorectal cancer

0.22

0.18–0.28%

I2 = 0.02

29,578

  MSI-high colorectal carcinoma

3.25

NA*

  MSI-stable colorectal carcinoma

0.18

NA*

  Deficient MMR colorectal cancer

5.60

2.28–11.20%

125

  RAS/BRAF WT colorectal cancer

0.50

0.01–2.77%

199

  RAS/BRAF WT, anti-EGFR resistant colorectal cancer

4.26

0.52–14.5%

47

Group—Genitourinary

 Prostate cancer

0.14

0.08–0.25%

I2 = 0.00

7845

  Prostate adenocarcinoma

0.00

0.00–0.73%

502

  Bladder cancer

0.21

0.10–0.42%

I2 = 0.00

3831

  Bladder urothelial carcinoma

0.00

0.00–0.89%

414

  Renal clear cell carcinoma

0.00

0.00–0.68%

541

  Metanephric adenoma

10.00

1.23–31.70%

20

Group—Gynaecological

 Cervical cancer

0.33

0.00–1.81%

 

 Uterine

0.19

0.02–0.67%

1080

 Uterine sarcoma

1.15

0.14–4.09%

174

 Fallopian tube

0.28

0.06–0.81%

1078

 Ovarian cancer

0.18

0.11–0.28%

11,590

  Ovarian serous cystadenocarcinoma

0.00

0.00–0.86%

428

Group—Head and Neck

 Head and neck (excluding salivary gland cancers)

0.10

0.02–0.28%

3145

 Head and neck squamous cell carcinoma

0.38

0.04–1.38%

522

 Salivary gland cancer (includes secretory carcinoma)

2.50

1.60–3.69%

962

 Secretory carcinoma of the salivary gland

83.33

69.78–92.52%

48

Group—Lung

 Lung

0.06

0.03–0.10%

21,115

 Non-small cell lung cancer

0.19

0.11–0.33%

I2 = 0.88

60,272

  Non-squamous non-small lung cancer

0.00

0.00–0.40%

909

  Lung adenocarcinoma

0.09

0.03–0.31%

I2 = 0.32

8982

  Lung squamous cell carcinoma

0.00

0.00–0.73%

502

  Large cell neuroendocrine carcinoma

1.45

0.04–7.81%

69

  Mucinous adenocarcinoma

1.39

0.03–7.50%

72

  Small cell lung cancer

1.64

0.20–5.80%

122

  EGFR, ALK, KRAS, ROS1 WT lung adenocarcinoma

3.30

0.69–9.33%

91

  BRAF, KRAS, EGFR WT lung adenocarcinoma

0.27

0.01–1.69%

327

  EGFR T790M 2nd Gen TKI resistant non-small cell lung cancer

1.79

0.04–9.55%

56

  EGFRm post TKI non-small cell lung cancer

0.10

0.03–0.26%

3873

Group—Sarcoma

 Sarcoma

0.68

0.36–1.16%

1915

 Bone sarcoma

0.16

0.00–0.90%

616

 Osteosarcoma

2.65**

0.55–7.56%

113

 Soft tissue sarcoma

0.69

0.26–1.85%

I2 = 0.48

5080

  Sarcoma NOS (excludes uterine)

1.17

0.54–2.21%

770

  Gastrointestinal stromal tumours

0.59

0.22–1.29%

1009

  Thoracic inflammatory myofibroblastic tumours

9.09

1.92–24.33%

33

 Leiomyosarcoma

0.27

0.09–0.62%

1865

Group—Skin and Melanoma

 Melanoma

0.19

0.12–0.33%

I2 = 0.00

7203

  Cutaneous melanoma

0.76

0.16–2.20%

395

  Spitzoid neoplasms

12.50

7.32–19.50%

128

  Spitzoid melanoma

4.00

0.10–20.35%

25

  Mucosal/paramucosal melanoma

0.89

0.02–4.83%

113

  Pigmented spindle cell nevus of reed

56.52

34.49–76.81%

23

Group—Thyroid

 Thyroid cancer

1.68

1.08–2.63%

I2 = 0.67

2679

 Papillary thyroid cancer

2.04

1.32–3.13%

I2 = 0.40

1552

  Classic papillary thyroid cancer

0.35

0.04–1.25%

575

  Classic papillary thyroid cancer (iodine refractory)

5.08

1.06–14.15%

59

  Tall cell variant papillary thyroid cancer

2.56

0.06–13.48%

39

  Anaplastic thyroid cancer

1.02

0.12–3.64%

196

  Hurtle cell carcinoma

2.86

0.07–14.92%

35

  Poorly differentiated thyroid cancer

2.44

0.06–12.86%

41

  Malignant thyroid nodule

0.48

0.01–2.64%

209

Group—Upper Gastrointestinal

 Gastric cancer

0.14

0.05–0.33%

3558

  Small bowel cancer

0.10

0.00–0.54%

1027

  Liver

0.19

0.02–0.68%

1064

 Pancreatic cancer

0.14

0.09–0.22%

I2 = 0.60

13,304

  Pancreatic adenocarcinoma

0.34

0.08–0.78%

1492

  Biliary tract cancer

0.22

0.10–0.49%

I2 = 0.00

2735

  Cholangiocarcinoma

0.17

0.09–0.34%

I2 = 0.00

4692

  Intrahepatic cholangiocarcinoma

3.57

0.09–18.35%

28

  1. ALK anaplastic lymphoma kinase, BRAF v-Raf murine sarcoma viral oncogene homolog B, CNS central nervous system, EGFR epidermal growth factor receptor, KRAS Kirsten rat sarcoma viral oncogene homolog, mEGFR metastatic-EGFR, NOS not otherwise specified, RAS rat sarcoma, ROS1 c-ros oncogene 1, TKI tyrosine kinase inhibitor.
  2. *NA; Not Applicable, rates reported without denominator. **3 fusions identified were novel and confirmed non-functional for expressing TRK protein.