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Gene BRAF
Variant class 2
Impact List unknown
Protein Effect gain of function
Gene Variant Descriptions BRAF Class 2 variants are BRAF variants that activate BRAF and downstream signaling in a dimer-dependent, RAS-independent manner (PMID: 28783719, PMID: 26343582).
Associated Drug Resistance
Category Variants Paths

BRAF mutant BRAF act mut BRAF class 2

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No Variant Reference Transcript is Available.
No transcript is Available.

Filtering

  • Case insensitive filtering will display rows if any text in any cell matches the filter term
  • Use simple literal full or partial string matches
  • Separate multiple filter terms with a space. Any order may be used (i. e. a b c and c b a are equivalent )
  • Filtering will only apply to rows that are already loaded on the page. Filtering has no impact on query parameters.
  • Use quotes to match on a longer phrase with spaces (i.e. "mtor c1483f")

Sorting

  • Generally, the default sort order for tables is set to be first column ascending; however, specific tables may set a different default sort order.
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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
BRAF class 2 colorectal cancer decreased response Cetuximab Clinical Study Actionable In a clinical study, colorectal cancer patients harboring class 2 BRAF mutations demonstrated a decreased response to treatment with the combination of either Erbitux (cetuximab) or Vectibix (panitumumab) plus chemotherapy compared to those with class 3 BRAF mutations, with a response rate of 8% (1/12) vs 50% (14/28) (P=0.02), respectively, in first, second, third or later-line setting and a response rate of 17% (1/6) vs 78% (7/9) (P=0.04), respectively, in the first or second-line setting (PMID: 31515458). 31515458
BRAF class 2 colorectal cancer decreased response Panitumumab Clinical Study Actionable In a clinical study, colorectal cancer patients harboring class 2 BRAF mutations demonstrated a decreased response to treatment with the combination of either Erbitux (cetuximab) or Vectibix (panitumumab) plus chemotherapy compared to those with class 3 BRAF mutations, with a response rate of 8% (1/12) vs 50% (14/28) (P=0.02), respectively, in first, second, third or later-line setting and a response rate of 17% (1/6) vs 78% (7/9) (P=0.04), respectively, in the first or second-line setting (PMID: 31515458). 31515458
BRAF class 2 Advanced Solid Tumor no benefit Belvarafenib Phase II Actionable In a Phase II trial (TAPISTRY), Belvarafenib (HM95573) treatment did not result in any confirmed objective responses in patients with advanced solid tumors harboring BRAF class II alterations (including mutations, fusion positive, or intragenic deletions), with a clinical benefit rate of 3.8% (1/26), 42.3% (11/26) with stable disease, a median progression-free survival of 2.1 months, and a median overall survival of 4.8 months (Ann Oncol (2024) 35 (Suppl_2): S498-S499; NCT04589845). detail...
BRAF class 2 pancreatic cancer predicted - sensitive Exarafenib Preclinical - Cell culture Actionable In a preclinical study, Exarafenib (KIN-2787) treatment led to inhibition of tumor growth in a pancreatic cell line xenograft model harboring a BRAF class 2 mutation (J of Clin Oncol 39, no. 15_suppl (May 20, 2021) 3116-3116). detail...
BRAF class 2 Advanced Solid Tumor predicted - sensitive Exarafenib Case Reports/Case Series Actionable In a Phase I trial, Exarafenib (KIN-2787) was tolerated and resulted in a partial response in 17.6% (6/34) and stable disease in 23.5% (8/34) of patients with BRAF-driven advanced solid tumors or NRAS-driven melanoma, including a partial response in 1 patient harboring a BRAF class 2 mutation (Cancer Res (2023) 83 (8_Supplement): CT032; NCT04913285). detail...
BRAF class 2 Advanced Solid Tumor predicted - sensitive BDTX-4933 Preclinical - Cell culture Actionable In a preclinical study, BDTX-4933 inhibited proliferation of cells expressing a BRAF class 2 mutation in culture (Eur J Cancer (2022), Vol 174, Supplement 1: S86). detail...
BRAF class 2 Advanced Solid Tumor predicted - sensitive DCC-3084 Preclinical - Cell culture Actionable In a preclinical study, DCC-3084 inhibited downstream signaling and proliferation in cells expressing a BRAF class 2 mutation in culture (Cancer Res (2023) 83 (7_Supplement): 4045). detail...