dʒˈiːn fjˈuːʒənz ɪnvˈɑːlvɪŋ ˌɛntˌiːˌɑːɹkˈeɪ wˈʌn hɐvbɪn ʃˈoʊn təbi ˌɑːŋkoʊdʒˈɛnɪk, lˈiːdɪŋ tə ðə kˈɑːnstɪtˌuːɾɪv tˌiːˌɑːɹkˈeɪ ɐ ˌæktɪvˈeɪʃən.
Gene fusions involving NTRK1 have been shown to be oncogenic, leading to the constitutive TrkA activation.