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Gene | NRAS |
Variant | Q61H |
Impact List | missense |
Protein Effect | loss of function - predicted |
Gene Variant Descriptions | NRAS Q61H is a hotspot mutation that lies within a GTP-binding region of the Nras protein (UniProt.org). Q61H results in increased GTP-bound Nras, downstream pathway activation, and increased cell proliferation in culture (PMID: 23103856), and is predicted to lead to a loss of Nras protein function based on the effects of HRAS Q61H (PMID: 3510078) and KRAS Q61H (PMID: 20147967). |
Associated Drug Resistance | |
Category Variants Paths |
NRAS mutant NRAS act mut NRAS Q61H NRAS mutant NRAS exon3 NRAS Q61X NRAS Q61H |
Transcript | NM_002524.5 |
gDNA | chr1:g.114713907T>A |
cDNA | c.183A>T |
Protein | p.Q61H |
Source Database | RefSeq |
Genome Build | GRCh38/hg38 |
Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
---|---|---|---|---|---|
NM_002524 | chr1:g.114713907T>A | c.183A>T | p.Q61H | RefSeq | GRCh38/hg38 |
NM_002524.5 | chr1:g.114713907T>A | c.183A>T | p.Q61H | RefSeq | GRCh38/hg38 |
NM_002524.4 | chr1:g.114713907T>A | c.183A>T | p.Q61H | RefSeq | GRCh38/hg38 |
Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
---|---|---|---|---|---|---|---|
NRAS Q61H | rhabdomyosarcoma | sensitive | Alpelisib + Binimetinib | Preclinical - Cell culture | Actionable | In a preclinical study, the combination therapy of Alpelisib (BYL719) and Binimetinib (MEK162) led to a synergistic effect in rhabdomyosarcoma cells harboring NRAS Q61H, demonstrating cell death in culture (PMID: 29437705). | 29437705 |
NRAS Q61H | rhabdomyosarcoma | not predictive | Rigosertib | Preclinical - Cell line xenograft | Actionable | In a preclinical study, Rigosertib (ON01910) inhibited cell viability and induced apoptosis and cell cycle arrest in rhabdomyosarcoma cells harboring NRAS Q61H in culture, and delayed tumor growth in cell line xenograft models, however, cells with wild-type NRAS demonstrated the same response, and mechanistically, the response was found to be due to Rigosertib (ON0190) binding to tubulin (PMID: 33158997). | 33158997 |
NRAS Q61H | rhabdomyosarcoma | no benefit | Trametinib | Preclinical - Pdx & cell culture | Actionable | In a preclinical study, Mekinist (trametinib) inhibited ERK signaling and viability in rhabdomyosarcoma cell lines harboring NRAS Q61H in culture, but did not inhibit ERK signaling in cell line xenograft models and led to tumor progression (PMID: 34737198). | 34737198 |
NRAS Q61H | rhabdomyosarcoma | sensitive | LY3009120 + Trametinib | Preclinical - Cell culture | Actionable | In a preclinical study, Mekinist (trametinib) and LY3009120 combination treatment synergistically inhibited Erk phosphorylation, proliferation, and colony formation and induced cell cycle arrest and apoptosis in a rhabdomyosarcoma cell line harboring NRAS Q61H in culture (PMID: 34737198). | 34737198 |
NRAS Q61H | rhabdomyosarcoma | sensitive | LY3214996 + Trametinib | Preclinical - Cell line xenograft | Actionable | In a preclinical study, Mekinist (trametinib) and LY3214996 combination treatment synergistically inhibited growth and induced apoptosis and cell cycle arrest in a rhabdomyosarcoma cell line harboring NRAS Q61H in culture and delayed tumor growth in a xenograft model (PMID: 34737198). | 34737198 |
NRAS Q61H | rhabdomyosarcoma | sensitive | LY3009120 + LY3214996 | Preclinical - Cell culture | Actionable | In a preclinical study, LY3214996 and LY3009120 combination treatment synergistically induced cell cycle arrest and apoptosis in rhabdomyosarcoma cell lines harboring NRAS Q61H in culture (PMID: 34737198). | 34737198 |
NRAS Q61H | mucosal melanoma | sensitive | Trametinib | Preclinical - Cell culture | Actionable | In a preclinical study, Mekinist (trametinib) inhibited downstream signaling and decreased viability of a mucosal melanoma cell line harboring NRAS Q61H in culture (PMID: 29054983). | 29054983 |
NRAS Q61H | mucosal melanoma | sensitive | Trametinib | Preclinical - Cell culture | Actionable | In a preclinical study, Mekinist (trametinib) treatment inhibited viability of patient-derived mucosal melanoma cells harboring NRAS Q61H in culture (PMID: 39001563). | 39001563 |
NRAS Q61H | rhabdomyosarcoma | predicted - sensitive | Ganitumab + Trametinib | Preclinical - Cell line xenograft | Actionable | In a preclinical study, the combination of Mekinist (trametinib) and Ganitumab (AMG-479) synergistically inhibited growth of a rhabdomyosarcoma cell line harboring NRAS Q61H in culture, but did not improve tumor suppression and survival compared to monotherapy in a cell line xenograft model (PMID: 36322002). | 36322002 |