Bi-directional sequencing of NRAS exons 2 and 3 which includes sites of common activating mutations in codons 12, 13, 59, and 61. Testing is performed on cell-free plasma DNA/RNA to increase sensitivity. Note - NeoLAB™ NRAS Mutation Analysis- Liquid Biopsy will only be performed for hematological diseases at this time.
NRAS is highly homologous with KRAS; both are members of the most frequently mutated family of oncogenes. Mutations are found in MDS/CMML, AML, and in advanced systemic mastocytosis. In addition, this test can be used for screening and determining if a bone marrow biopsy is an absolute necessity, as well as monitoring disease status and response to therapy. It can also be used for performing molecular studies when a bone marrow sample is inadequate (dry tap, insufficient quantity, or not viable), or not available. This test should not be used for solid tumors. Tissue-based testing is recommended for solid tumors.
Peripheral blood: 2 x 6 mL EDTA tubes (total 12 mL) or 10 mL in EDTA tube.
Use cold pack for transport, making sure cold pack is not in direct contact with specimen. Ship same day as drawn whenever possible; specimens <72 hours old preferred.