The lab analyst performs the technical lab test using a specimen such as formalin–fixed paraffin embedded tissue (FFPE) to analyze NTRK3 (neurotrophic receptor tyrosine kinase 3) translocations that may be associated with tropomyosin receptor kinase (TRK)–mediated cell proliferation involved in certain solid tumors, such as congenital/infantile fibrosarcoma.
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