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Gene | PIK3CA |
Variant | M1043I |
Impact List | missense |
Protein Effect | gain of function |
Gene Variant Descriptions | PIK3CA M1043I lies within the PI3K/PI4K domain of the Pik3ca protein (UniProt.org). M1043I confers a gain of function on the Pik3ca protein as indicated by in increased phosphorylation of Akt, activation of downstream signaling, and transformation in cell culture (PMID: 17376864, PMID: 29533785). |
Associated Drug Resistance | |
Category Variants Paths |
PIK3CA mutant PIK3CA act mut PIK3CA M1043I PIK3CA mutant PIK3CA exon21 PIK3CA M1043I |
Transcript | NM_006218.4 |
gDNA | chr3:g.179234286G>C |
cDNA | c.3129G>C |
Protein | p.M1043I |
Source Database | RefSeq |
Genome Build | GRCh38/hg38 |
Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
---|---|---|---|---|---|
XM_006713658.4 | chr3:g.179234286G>C | c.3129G>C | p.M1043I | RefSeq | GRCh38/hg38 |
XM_006713658 | chr3:g.179234286G>C | c.3129G>C | p.M1043I | RefSeq | GRCh38/hg38 |
XM_011512894 | chr3:g.179234286G>C | c.3129G>C | p.M1043I | RefSeq | GRCh38/hg38 |
XM_011512894.2 | chr3:g.179234286G>C | c.3129G>C | p.M1043I | RefSeq | GRCh38/hg38 |
XM_006713658.5 | chr3:g.179234286G>C | c.3129G>C | p.M1043I | RefSeq | GRCh38/hg38 |
NM_006218.4 | chr3:g.179234286G>C | c.3129G>C | p.M1043I | RefSeq | GRCh38/hg38 |
NM_006218 | chr3:g.179234286G>C | c.3129G>C | p.M1043I | RefSeq | GRCh38/hg38 |
NM_006218.3 | chr3:g.179234286G>C | c.3129G>C | p.M1043I | RefSeq | GRCh38/hg38 |
Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
---|---|---|---|---|---|---|---|
PIK3CA M1043I PIK3CA amp | bladder urothelial carcinoma | predicted - sensitive | Everolimus | Case Reports/Case Series | Actionable | In a clinical case study, a patient with metastatic urothelial bladder cancer harboring PIK3CA M1043I and PIK3CA amplification (copy number >20), as well as amplification of CCND1 and loss of CDKN2A and CDKN2B, was treated with Afinitor (everolimus) and achieved a complete response including remission of lymph node metastases, and remained progression-free at 6 months (PMID: 33745098). | 33745098 |
BRAF V600E PIK3CA M1043I | anaplastic thyroid carcinoma | sensitive | Dasatinib + Trametinib | Preclinical - Cell culture | Actionable | In a preclinical study, the combination of Sprycel (dasatinib) and Mekinist (trametinib) inhibited viability of an anaplastic thyroid cancer cell line harboring BRAF V600E and PIK3CA M1043I in culture (PMID: 37713162). | 37713162 |