Gene Variant Detail

Contact

Missing content? – Request curation!

Request curation for specific Genes, variants, or PubMed publications.

Have questions, comments or suggestions? - Let us know!

Email us at : ckbsupport@jax.org

Gene PIK3CA
Variant H1047L
Impact List missense
Protein Effect gain of function
Gene Variant Descriptions PIK3CA H1047L is a hotspot mutation that lies within the PI3K/PI4K domain of the Pik3ca protein (UniProt.org). H1047L results in increased phosphorylation of Akt and Mek1/2, growth factor-independent cell survival, and transformation in cell culture (PMID: 26627007, PMID: 29533785).
Associated Drug Resistance

Filtering

  • Case insensitive filtering will display rows where any text in any cell matches the filter term
  • Simple literal full or partial string matches
  • Separate multiple filter terms with a spaces, order doesn't matter (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 a longer phrase which contains spaces "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.
  • Click on any column header arrows to sort by that column
  • Hold down the Shift key and click multiple columns to sort by more than one column, be sure to set ascending or descending order for a given column, before moving on to the next column.

Transcript NM_006218
gDNA chr3:g.179234297A>T
cDNA c.3140A>T
Protein p.H1047L
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_006218 chr3:g.179234297A>T c.3140A>T p.H1047L RefSeq GRCh38/hg38
XM_006713658 chr3:g.179234297A>T c.3140A>T p.H1047L RefSeq GRCh38/hg38
XM_011512894 chr3:g.179234297A>T c.3140A>T p.H1047L RefSeq GRCh38/hg38

Filtering

  • Case insensitive filtering will display rows where any text in any cell matches the filter term
  • Simple literal full or partial string matches
  • Separate multiple filter terms with a spaces, order doesn't matter (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 a longer phrase which contains spaces "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.
  • Click on any column header arrows to sort by that column
  • Hold down the Shift key and click multiple columns to sort by more than one column, be sure to set ascending or descending order for a given column, before moving on to the next column.

Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
PIK3CA H1047L breast cancer sensitive Alpelisib Preclinical - Cell culture Actionable In a preclinical study, Alpelisib (BYL719) inhibited survival of transformed breast epithelial cell lines overexpressing PIK3CA H1047L in culture (PMID: 26627007). 26627007
PIK3CA H1047L breast cancer sensitive Trametinib Preclinical Actionable In a preclinical study, Mekinist (trametinib) inhibited survival of transformed breast epithelial cell lines overexpressing PIK3CA H1047L in culture (PMID: 26627007). 26627007
PIK3CA H1047L breast cancer sensitive MK2206 Preclinical Actionable In a preclinical study, MK2206 inhibited survival of transformed breast epithelial cell lines overexpressing PIK3CA H1047L in culture (PMID: 26627007). 26627007
PIK3CA H1047L breast cancer sensitive Lapatinib Preclinical Actionable In a preclinical study, Tykerb (lapatinib) inhibited survival of transformed breast epithelial cell lines overexpressing PIK3CA H1047L in culture (PMID: 26627007). 26627007
PIK3CA H1047L breast cancer sensitive BEZ235 Preclinical Actionable In a preclinical study, BEZ235 inhibited survival of transformed breast epithelial cell lines overexpressing PIK3CA H1047L in culture (PMID: 26627007). 26627007
PIK3CA H1047L breast cancer sensitive Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) inhibited survival of transformed breast epithelial cell lines overexpressing PIK3CA H1047L in culture (PMID: 26627007). 26627007
ERBB2 over exp PIK3CA H1047L stomach cancer predicted - resistant Trastuzumab Clinical Study - Cohort Actionable In a clinical study (AMNESIA-1), assessment of pre-treatment tumor samples from ERBB2 (HER2)-positive gastric or gastroesophageal cancer patients (defined as HER2 IHC 3+ or HER2 IHC 2+/ISH+) identified PIK3CA mutations in 15% (3/20) of patients demonstrating primary resistance to Herceptin (trastuzumab), including 1 patient harboring PIK3CA H1047L (PMID: 29208673). 29208673