Table 1.

Incidence groups of NTRK rearrangements in adult and pediatric tumors.

	Adult Tumors	Pediatric Tumors
<5%	Lung, colorectal, pancreatic, appendiceal cancer, cholangiocarcinoma, melanoma, glioma and several sarcoma histotypes	Glioma and several sarcoma histotypes
5–75%	Thyroid and Gastrointestinal Stromal Tumors (GIST)	Thyroid, Spitzoid tumors and congenital mesoblastic nephroma
>75%	Secretory breast carcinoma and secretory salivary gland tumors	Infantile fibrosarcoma and breast secretory carcinoma