Gene Variant Detail

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Gene BRAF
Variant N486_P490del
Impact List deletion
Protein Effect gain of function
Gene Variant Descriptions BRAF N486_P490del results in the deletion of five amino acids within the alphaC-helix region in the protein kinase domain of the Braf protein from amino acids 486 to 490 (PMID: 26732095). N486_P490del confers a gain of function to the Braf protein as indicated by activation of the MAPK signaling pathway and increased cell proliferation and transformation, and has been demonstrated to confer Braf inhibitor resistance in cell culture (PMID: 37656784, PMID: 26732095).
Associated Drug Resistance Y
Category Variants Paths

BRAF mutant BRAF act mut BRAF N486_P490del

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Transcript NM_004333.6
gDNA chr7:g.140778038_140778052del15
cDNA c.1457_1471del15
Protein p.N486_P490delNVTAP
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_001374244.1 chr7:g.140781658_140781672del15 c.1456_1470del15 p.S486_W490delSSDDW RefSeq GRCh38/hg38
XM_047420768.1 chr7:g.140781658_140781672del15 c.1456_1470del15 p.S486_W490delSSDDW RefSeq GRCh38/hg38
NM_001378475.1 chr7:g.140754194_140754208del15 c.1456_1470del15 p.H486_K490delHRDLK RefSeq GRCh38/hg38
NM_001378468.1 chr7:g.140778038_140778052del15 c.1457_1471del15 p.N486_P490delNVTAP RefSeq GRCh38/hg38
NM_001378467.1 chr7:g.140778050_140778064del15 c.1457_1471del15 p.K486_V490delKMLNV RefSeq GRCh38/hg38
XM_047420770.1 chr7:g.140734715_140734729del15 c.1456_1470del15 p.I486_A490delIHRSA RefSeq GRCh38/hg38
NM_001378469.1 chr7:g.140777070_140777084del15 c.1457_1471del15 p.T486_N490delTRHVN RefSeq GRCh38/hg38
XM_047420769.1 chr7:g.140778038_140778052del15 c.1457_1471del15 p.N486_P490delNVTAP RefSeq GRCh38/hg38
XM_017012558.1 chr7:g.140781658_140781672del15 c.1456_1470del15 p.S486_W490delSSDDW RefSeq GRCh38/hg38
XM_017012559.2 chr7:g.140781658_140781672del15 c.1456_1470del15 p.S486_W490delSSDDW RefSeq GRCh38/hg38
NM_001354609.2 chr7:g.140778038_140778052del15 c.1457_1471del15 p.N486_P490delNVTAP RefSeq GRCh38/hg38
NM_004333.6 chr7:g.140778038_140778052del15 c.1457_1471del15 p.N486_P490delNVTAP RefSeq GRCh38/hg38
XM_047420767.1 chr7:g.140781658_140781672del15 c.1456_1470del15 p.S486_W490delSSDDW RefSeq GRCh38/hg38
XM_017012559 chr7:g.140781658_140781672del15 c.1456_1470del15 p.S486_W490delSSDDW RefSeq GRCh38/hg38
NM_001378472.1 chr7:g.140776980_140776994del15 c.1456_1470del15 p.Y486_H490delYHHLH RefSeq GRCh38/hg38
NM_001354609.1 chr7:g.140778038_140778052del15 c.1457_1471del15 p.N486_P490delNVTAP RefSeq GRCh38/hg38
NM_004333.5 chr7:g.140778038_140778052del15 c.1457_1471del15 p.N486_P490delNVTAP RefSeq GRCh38/hg38
XM_047420766.1 chr7:g.140778002_140778016del15 c.1456_1470del15 p.F486_V490delFKNEV RefSeq GRCh38/hg38
NM_001374258.1 chr7:g.140781658_140781672del15 c.1456_1470del15 p.S486_W490delSSDDW RefSeq GRCh38/hg38
NM_001378473.1 chr7:g.140776980_140776994del15 c.1456_1470del15 p.Y486_H490delYHHLH RefSeq GRCh38/hg38
NM_001378470.1 chr7:g.140777034_140777048del15 c.1456_1470del15 p.S486_Q490delSTKPQ RefSeq GRCh38/hg38
NM_004333 chr7:g.140778038_140778052del15 c.1457_1471del15 p.N486_P490delNVTAP RefSeq GRCh38/hg38
XM_017012558 chr7:g.140781658_140781672del15 c.1456_1470del15 p.S486_W490delSSDDW RefSeq GRCh38/hg38
XM_017012559.1 chr7:g.140781658_140781672del15 c.1456_1470del15 p.S486_W490delSSDDW RefSeq GRCh38/hg38
XM_005250045 chr7:g.140778038_140778052del15 c.1457_1471del15 p.N486_P490delNVTAP RefSeq GRCh38/hg38
NM_001378474.1 chr7:g.140778038_140778052del15 c.1457_1471del15 p.N486_P490delNVTAP RefSeq GRCh38/hg38
NM_001378471.1 chr7:g.140777025_140777039del15 c.1456_1470del15 p.P486_I490delPQLAI RefSeq GRCh38/hg38

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
BRAF N486_P490del ovarian cancer sensitive LY3009120 Preclinical Actionable In a preclinical study, an ovarian cancer cell line harboring BRAF N486_P490del was sensitive to LY3009120, resulting in inhibition of cell growth and decreased phosphorylation of MEK and ERK in culture (PMID: 26732095). 26732095
BRAF N486_P490del ovarian cancer sensitive Trametinib Preclinical - Cell culture Actionable In a preclinical study, Mekinist (trametinib) inhibited growth of an ovarian cancer cell line harboring BRAF N486_P490del in culture (PMID: 26732095). 26732095
BRAF N486_P490del ovarian cancer sensitive Trametinib Preclinical - Cell culture Actionable In a preclinical study, Mekinist (trametinib) inhibited MAPK signaling and colony formation in an ovarian cancer cell line harboring BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del ovarian cancer resistant Vemurafenib Preclinical Actionable In a preclinical study, an ovarian cancer cell line harboring BRAF N486_P490del was resistant to Zelboraf (vemurafenib), resulting in minimal inhibition of both cell growth and phosphorylation of MEK and ERK in culture (PMID: 26732095). 26732095
BRAF N486_P490del ovarian cancer resistant Vemurafenib Preclinical - Cell culture Actionable In a preclinical study, Zelboraf (vemurafenib) failed to reduce phosphorylation of Mek and Erk and did not inhibit viability of an ovarian cancer cell line harboring BRAF N486_P490del in culture (PMID: 26996308). 26996308
BRAF N486_P490del ovarian cancer conflicting Dabrafenib Preclinical - Cell culture Actionable In a preclinical study, Tafinlar (dabrafenib) inhibited MAPK signaling and colony formation in an ovarian cancer cell line harboring BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del ovarian cancer conflicting Dabrafenib Preclinical Actionable In a preclinical study, Tafinlar (dabrafenib) resulted in minimal growth inhibitory activity of an ovarian cancer cell line harboring BRAF N486_P490del (PMID: 26732095). 26732095
BRAF N486_P490del pancreatic ductal adenocarcinoma sensitive Trametinib Case Reports/Case Series Actionable In a clinical case study, Mekinist (trametinib) treatment resulted in partial response in a patient with pancreatic ductal adenocarcinoma harboring BRAF N486_P490del 8 weeks after initiation of treatment and lasted for 6 months (PMID: 29903880). 29903880
BRAF N486_P490del pancreatic ductal adenocarcinoma sensitive Trametinib Preclinical - Patient cell culture Actionable In a preclinical study, a pancreatic ductal adenocarcinoma patient-derived organoid model harboring BRAF N486_P490del was sensitive to treatment with Mekinist (trametinib) in culture, demonstrating decreased cell viability (PMID: 37463056). 37463056
BRAF N486_P490del pancreatic ductal adenocarcinoma sensitive Trametinib Preclinical - Pdx Actionable In a preclinical study, a patient-derived xenograft (PDX) model with pancreatic ductal adenocarcinoma harboring BRAF N486_P490del demonstrated partial inhibition of Erk phosphorylation and moderate inhibition of tumor growth when treated with Mekinist (trametinib) (PMID: 34011980). 34011980
BRAF N486_P490del pancreatic ductal adenocarcinoma sensitive Trametinib Preclinical - Patient cell culture Actionable In a preclinical study, Mekinist (trametinib) inhibited growth of organoids derived from pancreatic ductal adenocarcinoma patients harboring BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del pancreatic cancer predicted - sensitive Dabrafenib Case Reports/Case Series Actionable In a clinical case study, a patient with pancreatic cancer harboring BRAF N486_P490del had a partial response when treated with Tafinlar (dabrafenib), demonstrating a decrease in both the size of the primary and metastatic lesions and response duration of 6 months (PMID: 31519698). 31519698
BRAF N486_P490del lymphatic system cancer predicted - sensitive Trametinib Case Reports/Case Series Actionable In a clinical case study, Mekinist (trametinib) treatment in two patients with Langerhans cell histiocytosis harboring BRAF N486_P490del resulted in a complete response with no disease reactivation over 18 months of treatment in one patient and a partial response with stable disease in the lungs maintained over 12 months of treatment in a second patient (PMID: 32991018). 32991018
BRAF N486_P490del pancreatic ductal adenocarcinoma predicted - sensitive LY3009120 Preclinical - Pdx & cell culture Actionable In a preclinical study, a patient-derived xenograft (PDX) model with pancreatic ductal adenocarcinoma harboring BRAF N486_P490del demonstrated partial inhibition of Erk phosphorylation and moderate inhibition of tumor growth when treated with LY3009120 (PMID: 34011980). 34011980
BRAF N486_P490del pancreatic ductal adenocarcinoma sensitive LY3009120 + Trametinib Preclinical - Pdx Actionable In a preclinical study, a patient-derived xenograft (PDX) model with pancreatic ductal adenocarcinoma harboring BRAF N486_P490del demonstrated inhibition of Erk phosphorylation and greater inhibition of tumor growth when treated with the combination of Mekinist (trametinib) and LY3009120 compared to either agent alone (PMID: 34011980). 34011980
BRAF N486_P490del ovarian cancer sensitive Cobimetinib Preclinical - Cell culture Actionable In a preclinical study, an ovarian cancer cell line harboring BRAF N486_P490del demonstrated sensitivity to Cotellic (cobimetinib), resulting in decreased cell viability in culture (PMID: 26996308). 26996308
BRAF N486_P490del melanoma sensitive Cobimetinib Preclinical - Cell culture Actionable In a preclinical study, a melanoma cell line harboring BRAF N486_P490del demonstrated sensitivity to Cotellic (cobimetinib), resulting in decreased cell viability in culture (PMID: 26996308). 26996308
BRAF N486_P490del ovarian cancer sensitive PD-0325901 Preclinical - Cell culture Actionable In a preclinical study, an ovarian cancer cell line harboring BRAF N486_P490del demonstrated sensitivity to PD-0325901, resulting in decreased cell viability in culture (PMID: 26996308). 26996308
BRAF N486_P490del melanoma sensitive PD-0325901 Preclinical - Cell culture Actionable In a preclinical study, a melanoma cell line harboring BRAF N486_P490del demonstrated sensitivity to PD-0325901, resulting in decreased cell viability in culture (PMID: 26996308). 26996308
BRAF N486_P490del ovarian cancer predicted - sensitive GDC0879 Preclinical - Cell culture Actionable In a preclinical study, an ovarian cancer cell line harboring BRAF N486_P490del demonstrated partial sensitivity to GDC0879 in culture (PMID: 26996308). 26996308
BRAF N486_P490del melanoma predicted - sensitive GDC0879 Preclinical - Cell culture Actionable In a preclinical study, a melanoma cell line harboring BRAF N486_P490del demonstrated partial sensitivity to GDC0879 in culture (PMID: 26996308). 26996308
BRAF N486_P490del melanoma sensitive AZ628 Preclinical - Cell culture Actionable In a preclinical study, a melanoma cell line harboring BRAF N486_P490del demonstrated sensitivity to AZ628, resulting in decreased cell viability and inhibition of Mek and Erk phosphorylation in culture (PMID: 26996308). 26996308
BRAF N486_P490del ovarian cancer sensitive AZ628 Preclinical - Cell culture Actionable In a preclinical study, an ovarian cancer cell line harboring BRAF N486_P490del demonstrated sensitivity to AZ628, resulting in decreased cell viability and inhibition of Mek and Erk phosphorylation in culture (PMID: 26996308). 26996308
BRAF N486_P490del melanoma resistant Vemurafenib Preclinical - Cell culture Actionable In a preclinical study, Zelboraf (vemurafenib) failed to reduce phosphorylation of Mek and Erk and did not inhibit viability of a melanoma cell line harboring BRAF N486_P490del in culture (PMID: 26996308). 26996308
BRAF N486_P490del pancreatic ductal adenocarcinoma predicted - sensitive Dabrafenib + Trametinib Case Reports/Case Series Actionable In a clinical case study, the combination of Tafinlar (dabrafenib) and Mekinist (trametinib) resulted in a partial response after 8 weeks of treatment in a patient with metastatic pancreatic ductal adenocarcinoma harboring BRAF N486_P490del (PMID: 36505826). 36505826
BRAF N486_P490del pancreatic ductal adenocarcinoma predicted - sensitive Dabrafenib + Trametinib Case Reports/Case Series Actionable In a retrospective analysis, third-line treatment with the combination of Tafinlar (dabrafenib) and Mekinist (trametinib) resulted in a partial response lasting 18 months in a patient with KRAS wild-type, metastatic pancreatic ductal adenocarcinoma harboring BRAF N486_P490del (PMID: 38770091). 38770091
BRAF N486_P490del pancreatic ductal adenocarcinoma sensitive Ulixertinib Preclinical - Patient cell culture Actionable In a preclinical study, a pancreatic ductal adenocarcinoma patient-derived organoid model harboring BRAF N486_P490del was sensitive to treatment with Ulixertinib (BVD-523) in culture, demonstrating decreased cell viability (PMID: 37463056). 37463056
BRAF N486_P490del Advanced Solid Tumor predicted - sensitive Trametinib Preclinical - Biochemical Actionable In a preclinical study, Mekinist (trametinib) inhibited Mek and Erk phosphorylation in cells expressing BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del Advanced Solid Tumor predicted - resistant Vemurafenib Preclinical - Biochemical Actionable In a preclinical study, Zelboraf (vemurafenib) did not inhibit Mek and Erk phosphorylation in cells expressing BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del Advanced Solid Tumor predicted - sensitive Dabrafenib Preclinical - Biochemical Actionable In a preclinical study, Tafinlar (dabrafenib) inhibited Mek and Erk phosphorylation in cells expressing BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del Advanced Solid Tumor predicted - sensitive LXH 254 Preclinical - Biochemical Actionable In a preclinical study, LXH 254 inhibited Mek and Erk phosphorylation in cells expressing BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del ovarian cancer sensitive LXH 254 Preclinical - Cell culture Actionable In a preclinical study, LXH 254 inhibited MAPK signaling and colony formation in an ovarian cancer cell line harboring BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del ovarian cancer decreased response Encorafenib Preclinical - Cell culture Actionable In a preclinical study, an ovarian cancer cell line harboring BRAF N486_P490del was less sensitive to Braftovi (encorafenib) treatment compared to type II RAF inhibitors in culture (PMID: 37656784). 37656784
BRAF N486_P490del ovarian cancer sensitive Sorafenib Preclinical - Cell culture Actionable In a preclinical study, Nexavar (sorafenib) inhibited colony formation in an ovarian cancer cell line harboring BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del ovarian cancer predicted - sensitive Ulixertinib Preclinical - Biochemical Actionable In a preclinical study, Ulixertinib (BVD-523) inhibited metabolic activity in an ovarian cancer cell line harboring BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del ovarian cancer predicted - sensitive LXH 254 + Trametinib Preclinical - Biochemical Actionable In a preclinical study, combination of Mekinist (trametinib) and LXH 254 resulted in enhanced inhibition of metabolic activity in an ovarian cancer cell line harboring BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del ovarian cancer predicted - sensitive Sorafenib + Trametinib Preclinical - Biochemical Actionable In a preclinical study, combination of Mekinist (trametinib) and Nexavar (sorafenib) resulted in enhanced inhibition of metabolic activity in an ovarian cancer cell line harboring BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del pancreatic ductal adenocarcinoma sensitive Binimetinib Preclinical - Patient cell culture Actionable In a preclinical study, Mektovi (binimetinib) inhibited growth of organoids derived from pancreatic ductal adenocarcinoma patients harboring BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del pancreatic ductal adenocarcinoma sensitive SCH772984 Preclinical - Patient cell culture Actionable In a preclinical study, SCH772984 inhibited growth of organoids derived from pancreatic ductal adenocarcinoma patients harboring BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del pancreatic ductal adenocarcinoma sensitive Sorafenib Preclinical - Patient cell culture Actionable In a preclinical study, Nexavar (sorafenib) inhibited growth of organoids derived from pancreatic ductal adenocarcinoma patients harboring BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del pancreatic ductal adenocarcinoma sensitive LXH 254 Preclinical - Patient cell culture Actionable In a preclinical study, LXH 254 inhibited growth of organoids derived from pancreatic ductal adenocarcinoma patients harboring BRAF N486_P490del in culture (PMID: 37656784). 37656784
BRAF N486_P490del lung adenocarcinoma predicted - sensitive Dabrafenib + Trametinib Case Reports/Case Series Actionable In a clinical case study, treatment with the combination of Tafinlar (dabrafenib) and Mekinist (trametinib) resulted in complete resolution of the pulmonary lesions and ongoing response after 6 months in a patient with metastatic lung adenocarcinoma harboring BRAF N486_P490del, who remained on treatment at 9 months (PMID: 38479107). 38479107