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Gene Symbol NRAS
Synonyms ALPS4 | CMNS | KRAS | N-ras | NCMS | NRAS1 | NS6
Gene Description NRAS, NRAS proto-oncogene, GTPase, is a member of the family of small GTPase that when activated by growth factors, stimulates multiple effector pathways such as RAF and PI3K to promote cell proliferation and survival (PMID: 29524560). NRAS mutations have been observed in a variety of cancers including melanoma, thyroid, breast, ovary cancer, and leukemia (PMID: 29524560, PMID: 30154648, PMID: 28860801).
NCBI Gene ID Chromosome Map Location Canonical Transcript Gene Role
4893 1 1p13.2 NM_002524 Oncogene (PMID: 30606230)

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Variant Impact Protein Effect Variant Description Associated with drug Resistance
A146X missense unknown NRAS A146X indicates any NRAS missense mutation that results in replacement of the alanine (A) at amino acid 146 by a different amino acid.
A59X missense unknown NRAS A59X indicates any NRAS missense mutation that results in the replacement of the alanine (A) at amino acid 59 by a different amino acid.
act mut unknown unknown NRAS act mut indicates that the variant results in activation of NRAS downstream signaling. The mechanism causing the activation can include either loss of GTP hydrolysis activity (loss of function) or increased nucleotide exchange rate (gain of function).
exon2 unknown unknown NRAS exon 2 indicates an unspecified mutation has occurred in exon 2 of the NRAS gene.
exon3 unknown unknown NRAS exon 3 indicates an unspecified mutation has occurred in exon 3 of the NRAS gene.
exon4 unknown unknown NRAS exon 4 indicates an unspecified mutation has occurred in exon 4 of the NRAS gene.
G12X missense unknown NRAS G12X indicates any NRAS missense mutation that results in replacement of the glycine (G) at amino acid 12 by a different amino acid. NRAS G12 mutations are hotspot mutations that often result in a loss of Nras GTPase activity and activation of downstream pathways (PMID: 27664710, PMID: 28666118, PMID: 22589270, PMID: 26985062).
G13X missense unknown NRAS G13X indicates any NRAS missense mutation that results in replacement of the glycine (G) at amino acid 13 by a different amino acid. NRAS G13 mutations are hotspot mutations that often result in decreased Nras GTPase activity and transformation of cultured cells (PMID: 17517660, PMID: 26985062).
inact mut unknown loss of function NRAS inact mut indicates that the variant results in failure to activate NRAS downstream signaling. However, the specific amino acid change has not been identified.
K117X missense unknown NRAS K117X indicates any NRAS missense mutation that results in the replacement of the lysine (K) at amino acid 117 by a different amino acid.
mutant unknown unknown NRAS mutant indicates an unspecified mutation in the NRAS gene.
Q61X missense unknown NRAS Q61X indicates any NRAS missense mutation that results in replacement of the glutamine (Q) at amino acid 61 by a different amino acid. NRAS Q61 mutations are hotspot mutations that often result in a loss of Nras GTPase activity and activation of downstream pathways (PMID: 27664710, PMID: 28666118, PMID: 22589270, PMID: 26985062).