Gene Variant Detail

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Gene PIK3CA
Variant H1047R
Impact List missense
Protein Effect gain of function
Gene Variant Descriptions PIK3CA H1047R is a hotspot mutation that lies within the kinase domain of the Pik3ca protein (UniProt.org). H1047R 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
Category Variants Paths

PIK3CA mutant PIK3CA act mut PIK3CA H1047R

PIK3CA mutant PIK3CA exon21 PIK3CA H1047X PIK3CA H1047R

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Transcript NM_006218.4
gDNA chr3:g.179234297A>G
cDNA c.3140A>G
Protein p.H1047R
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_006218.3 chr3:g.179234297A>G c.3140A>G p.H1047R RefSeq GRCh38/hg38
XM_006713658.5 chr3:g.179234297A>G c.3140A>G p.H1047R RefSeq GRCh38/hg38
NM_006218.4 chr3:g.179234297A>G c.3140A>G p.H1047R RefSeq GRCh38/hg38
NM_006218 chr3:g.179234297A>G c.3140A>G p.H1047R RefSeq GRCh38/hg38
XM_011512894 chr3:g.179234297A>G c.3140A>G p.H1047R RefSeq GRCh38/hg38
XM_006713658 chr3:g.179234297A>G c.3140A>G p.H1047R RefSeq GRCh38/hg38
XM_006713658.4 chr3:g.179234297A>G c.3140A>G p.H1047R RefSeq GRCh38/hg38
XM_011512894.2 chr3:g.179234297A>G c.3140A>G p.H1047R RefSeq GRCh38/hg38

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
PIK3CA P539R PIK3CA H1047R breast cancer sensitive PF-04691502 Preclinical - Cell culture Actionable In a preclinical study, PF-04691502 inhibited Akt phosphorylation and proliferation of breast cancer cells harboring both PIK3CA P539R and H1047R in culture (PMID: 21750219). 21750219
PIK3CA P539R PIK3CA H1047R breast cancer sensitive Miransertib Preclinical - Cell culture Actionable In a preclinical study, breast cancer cells harboring PIK3CA P539R and H1047R were sensitive to Miransertib (ARQ092) in culture, demonstrating inhibition of cell growth (PMID: 26469692). 26469692
PIK3CA P539R PIK3CA H1047R breast cancer sensitive ARQ 751 Preclinical - Cell culture Actionable In a preclinical study, ARQ 751 inhibited cell growth in a breast cancer cell line harboring PIK3CA P539R and H1047R in culture (PMID: 26469692). 26469692
PIK3CA P539R PIK3CA H1047R Advanced Solid Tumor sensitive STX-478 Preclinical - Cell culture Actionable In a preclinical study, STX-478 inhibited viability of a cell line harboring PIK3CA H1047R and P539R in culture (PMID: 37623743). 37623743
BRAF V600E PIK3CA H1047R thyroid gland carcinoma predicted - sensitive Dabrafenib + Everolimus + Trametinib Case Reports/Case Series Actionable In a clinical case study, a patient with anaplastic thyroid carcinoma co-harboring BRAF V600E and PIK3CA H1047R demonstrated tumor regression when treated with the triple combination, Tafinlar (dabrafenib), Mekinist (trametinib), and Afinitor (everolimus) (PMID: 27797976). 27797976
BRAF V600E PIK3CA H1047R thyroid gland carcinoma resistant Everolimus Case Reports/Case Series Actionable In a clinical case study, a patient with anaplastic thyroid carcinoma co-harboring BRAF V600E and PIK3CA H1047R demonstrated resistance to treatment with Afinitor (everolimus) (PMID: 27797976). 27797976
BRAF V600E PIK3CA H1047R thyroid gland carcinoma resistant Dabrafenib + Trametinib Case Reports/Case Series Actionable In a clinical case study, a patient with anaplastic thyroid carcinoma co-harboring BRAF V600E and PIK3CA H1047R demonstrated resistance to the combination therapy, Mekinist (trametinib) and Tafinlar (dabrafenib) (PMID: 27797976). 27797976
BRAF V600E PIK3CA H1047R colorectal cancer resistant Vemurafenib Preclinical - Cell line xenograft Actionable In a preclinical study, Zelboraf (vemurafenib) treatment did not inhibit proliferation of colorectal cancer cells harboring BRAF V600E and PIK3CA H1047R in culture, and did not inhibit tumor growth in a cell line xenograft model (PMID: 22180495). 22180495
BRAF V600E PIK3CA H1047R colorectal cancer sensitive MK2206 + Vemurafenib Preclinical - Cell line xenograft Actionable In a preclinical study, Zelboraf (vemurafenib) treatment in combination with MK2206 induced apoptosis and synergistically inhibited proliferation of colorectal cancer cells harboring BRAF V600E and PIK3CA H1047R in culture, and inhibited tumor growth in a cell line xenograft model (PMID: 22180495). 22180495
BRAF V600E PIK3CA H1047R colorectal cancer predicted - sensitive MK2206 Preclinical - Cell line xenograft Actionable In a preclinical study, MK2206 treatment resulted in a modest tumor growth inhibition in a cell line xenograft model of colorectal cancer harboring BRAF V600E and PIK3CA H1047R (PMID: 22180495). 22180495
BRAF V600E PIK3CA H1047R thyroid gland anaplastic 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 H1047R in culture (PMID: 37713162). 37713162
BRAF V600E PIK3CA H1047R TP53 wild-type colorectal cancer sensitive PD-0325901 + Sapanisertib Preclinical - Cell culture Actionable In a preclinical study, Sapanisertib (MLN0128) and PD-0325901 synergistically inhibited Erk and PI3K signaling and proliferation, induced apoptosis in TP53-wild-type colorectal cancer cells harboring BRAF V600E and PIK3CA H1047R in culture (PMID: 26272063). 26272063
PIK3CA H1047R PTEN E307K breast cancer sensitive BAY1125976 Preclinical - Cell culture Actionable In a preclinical study, BAY1125976 inhibited proliferation of a breast cancer cell line harboring PIK3CA H1047R and PTEN E307K in culture (PMID: 27699769). 27699769
PIK3CA H1047R PTEN loss breast cancer no benefit Dactolisib + Venetoclax Preclinical - Cell culture Actionable In a preclinical study, inhibition of Pi3k signaling by BEZ235 did not sensitize breast cancer cell lines harboring PIK3CA H1047R and PTEN loss to Venclexta (venetoclax) in culture (PMID: 27974663). 27974663
PIK3CA H1047R PTEN loss breast cancer predicted - sensitive Dactolisib + WEHI-539 Preclinical - Cell culture Actionable In a preclinical study, inhibition of Pi3k signaling by BEZ235 sensitized breast cancer cell lines harboring PIK3CA H1047R and PTEN loss to WEHI-539 in culture (PMID: 27974663). 27974663
PIK3CA H1047R PTEN loss triple-receptor negative breast cancer predicted - sensitive ABT-737 + Dactolisib Preclinical - Cell line xenograft Actionable In a preclinical study, ABT-737 and BEZ235 combination treatment resulted in tumor regression in cell line xenograft models of triple-receptor negative breast cancer harboring PIK3CA H1047R and PTEN loss (PMID: 27974663). 27974663
PIK3CA H1047R PTEN loss triple-receptor negative breast cancer predicted - sensitive ABT-737 + Sapanisertib Preclinical - Cell line xenograft Actionable In a preclinical study, ABT-737 and Sapanisertib (MLN0128) combination treatment resulted in inhibition of tumor growth in cell line xenograft models of triple-receptor negative breast cancer harboring PIK3CA H1047R and PTEN loss (PMID: 27974663). 27974663
PIK3CA H1047R PTEN loss breast cancer predicted - sensitive CYH33 Preclinical - Cell culture Actionable In a preclinical study, CYH33 inhibited proliferation of a breast cancer cell line harboring PIK3CA H1047R and PTEN loss in culture (PMID: 30003928). 30003928
PIK3CA H1047R PTEN loss breast cancer sensitive Taselisib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring a PIK3CA H1047R and PTEN loss was sensitive to treatment with Taselisib (GDC-0032) in culture, demonstrating decreased cell viability (PMID: 31534012). 31534012
PIK3CA H1047R TP53 S90fs ovarian clear cell adenocarcinoma decreased response DS-7423 Preclinical - Cell culture Actionable In a preclinical study, an ovarian clear cell adenocarcinoma cell line harboring PIK3CA H1047R and TP53 S90fs*33 demonstrated reduced sensitivity to DS-7423 in culture (PMID: 24504419). 24504419
NRAS mut PIK3CA H1047R melanoma predicted - resistant Trametinib Preclinical - Cell culture Actionable In a preclinical study, one of two NRAS-mutant melanoma cell lines expressing PIK3CA H1047R demonstrated resistance to treatment with Mekinist (trametinib) in culture (PMID: 30819666). 30819666
PIK3CA E726K PIK3CA H1047R breast cancer sensitive Alpelisib Preclinical - Cell culture Actionable In a preclinical study, breast epithelial cells expressing PIK3CA E726K and PIK3CA H1047R in cis demonstrated increased sensitivity to growth inhibition by Piqray (Alpelisib) treatment compared to cells expressing individual PIK3CA mutations in culture, while cells expressing PIK3CA E726K and PIK3CA H1047R in trans did not (PMID: 31699932). 31699932
PIK3CA E726K PIK3CA H1047R breast cancer sensitive Alpelisib Preclinical - Biochemical Actionable In a preclinical study, Piqray (alpelisib) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA E726K in culture (PMID: 37916958). 37916958
PIK3CA E726K PIK3CA H1047R breast cancer sensitive Inavolisib Preclinical - Cell culture Actionable In a preclinical study, breast epithelial cells expressing PIK3CA E726K and PIK3CA H1047R in cis demonstrated increased sensitivity to growth inhibition by Inavolisib (GDC-0077) treatment compared to cells expressing individual PIK3CA mutations in culture (PMID: 31699932). 31699932
PIK3CA E726K PIK3CA H1047R breast cancer sensitive Inavolisib Preclinical - Cell culture Actionable In a preclinical study, Inavolisib (GDC-0077) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA E726K in culture (PMID: 37916958). 37916958
PIK3CA E726K PIK3CA H1047R breast cancer sensitive Everolimus Preclinical - Cell culture Actionable In a preclinical study, breast epithelial cells expressing PIK3CA E726K and PIK3CA H1047R in cis demonstrated increased sensitivity to growth inhibition by Afinitor (everolimus) treatment compared to cells expressing individual PIK3CA mutations in culture (PMID: 31699932). 31699932
PIK3CA E726K PIK3CA H1047R breast cancer sensitive Taselisib Preclinical - Cell culture Actionable In a preclinical study, Taselisib (GDC-0032) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA E726K in culture (PMID: 37916958). 37916958
PIK3CA E726K PIK3CA H1047R breast cancer resistant Pictilisib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA E726K was resistant to Pictilisib (GDC-0941) in culture (PMID: 37916958). 37916958
PIK3CA E726K PIK3CA H1047R breast cancer resistant Miransertib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA E726K was resistant to Miransertib (ARQ092) in culture (PMID: 37916958). 37916958
PIK3CA E726K PIK3CA H1047R breast cancer sensitive Ipatasertib Preclinical - Cell culture Actionable In a preclinical study, Ipatasertib (GDC-0068) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA E726K in culture (PMID: 37916958). 37916958
PIK3CA E726K PIK3CA H1047R breast cancer resistant RLY-2608 Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA E726K was resistant to RLY-2608 treatment in culture (PMID: 37916958). 37916958
PIK3CA E453Q PIK3CA H1047R breast cancer sensitive Alpelisib Preclinical - Cell culture Actionable In a preclinical study, breast epithelial cells expressing PIK3CA E453Q and PIK3CA H1047R in cis demonstrated increased sensitivity to growth inhibition by Piqray (Alpelisib) treatment compared to cells expressing individual PIK3CA mutations in culture (PMID: 31699932). 31699932
PIK3CA E453Q PIK3CA H1047R breast cancer sensitive Inavolisib Preclinical - Cell culture Actionable In a preclinical study, breast epithelial cells expressing PIK3CA E453Q and PIK3CA H1047R in cis demonstrated increased sensitivity to growth inhibition by Inavolisib (GDC-0077) treatment compared to cells expressing individual PIK3CA mutations in culture (PMID: 31699932). 31699932
PIK3CA E453Q PIK3CA H1047R breast cancer sensitive Everolimus Preclinical - Cell culture Actionable In a preclinical study, breast epithelial cells expressing PIK3CA E453Q and PIK3CA H1047R in cis demonstrated increased sensitivity to growth inhibition by Afinitor (everolimus) treatment compared to cells expressing individual PIK3CA mutations in culture (PMID: 31699932). 31699932
PIK3CA Q1033R PIK3CA H1047R Burkitt lymphoma predicted - sensitive Idelalisib Case Reports/Case Series Actionable In a clinical case study, Zydelig (idelalisib) treatment resulted in tumor shrinkage and decreased plasma LDH that continued for 10 months before recurrence in a patient with relapsed Burkitt lymphoma harboring PIK3CA H1047R and PIK3CA Q1033R (PMID: 32193631). 32193631
BRAF V600E PIK3CA H1047R PTEN Y68fs melanoma predicted - resistant Vemurafenib Case Reports/Case Series Actionable In a clinical study, a melanoma patient harboring BRAF V600E and PTEN Y68fs treated with Zelboraf (vemurafenib) was found to have acquired PIK3CA H1047R in the post-progression tumor biopsy (PMID: 24265153). 24265153
NRAS G13R PIK3CA H1047R rhabdomyosarcoma resistant Ganitumab + Trametinib Preclinical - Pdx Actionable In a preclinical study, a patient-derived xenograft (PDX) model of rhabdomyosarcoma harboring NRAS G13R and PIK3CA H1047R was resistant to the Mekinist (trametinib) and Ganitumab (AMG-479) combination treatment (PMID: 36322002). 36322002
ALK F1174L PIK3CA H1047R neuroblastoma predicted - resistant Lorlatinib Case Reports/Case Series Actionable In a Phase I trial, a neuroblastoma patient harboring ALK F1174L developed progressive disease on treatment with Lorbrena (lorlatinib) and was found to have acquired PIK3CA H1047R via circulating tumor DNA (PMID: 37147298; NCT03107988). 37147298
PIK3CA D350N PIK3CA H1047R Advanced Solid Tumor sensitive STX-478 Preclinical - Cell culture Actionable In a preclinical study, STX-478 inhibited viability of a cell line harboring PIK3CA H1047R and D350N in culture (PMID: 37623743). 37623743
PIK3CA K111R PIK3CA H1047R lung carcinoma sensitive STX-478 Preclinical - Cell line xenograft Actionable In a preclinical study, STX-478 inhibited viability in a lung carcinoma cell line harboring PIK3CA H1047R and K111R in culture, and inhibited tumor growth in a cell line xenograft model (PMID: 37623743). 37623743
PIK3CA W780R PIK3CA H1047R breast cancer resistant Alpelisib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA W780R was resistant to Piqray (alpelisib) in culture (PMID: 37916958). 37916958
PIK3CA W780R PIK3CA H1047R breast cancer resistant Inavolisib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA W780R was resistant to Inavolisib (GDC-0077) in culture (PMID: 37916958). 37916958
PIK3CA W780R PIK3CA H1047R breast cancer resistant Taselisib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA W780R was resistant to Taselisib (GDC-0032) in culture (PMID: 37916958). 37916958
PIK3CA W780R PIK3CA H1047R breast cancer resistant Pictilisib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA W780R was resistant to Pictilisib (GDC-0941) in culture (PMID: 37916958). 37916958
PIK3CA W780R PIK3CA H1047R breast cancer sensitive Miransertib Preclinical - Cell culture Actionable In a preclinical study, Miransertib (ARQ092) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA W780R in culture (PMID: 37916958). 37916958
PIK3CA W780R PIK3CA H1047R breast cancer sensitive Ipatasertib Preclinical - Cell culture Actionable In a preclinical study, Ipatasertib (GDC-0068) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA W780R in culture (PMID: 37916958). 37916958
PIK3CA W780R PIK3CA H1047R breast cancer sensitive RLY-2608 Preclinical - Cell culture Actionable In a preclinical study, RLY-2608 inhibited downstream signaling and viability in a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA W780R in culture (PMID: 37916958). 37916958
PIK3CA Q859H PIK3CA H1047R breast cancer resistant Alpelisib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA Q859H was resistant to Piqray (alpelisib) in culture (PMID: 37916958). 37916958
PIK3CA Q859H PIK3CA H1047R breast cancer resistant Inavolisib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA Q859H was resistant to Inavolisib (GDC-0077) in culture (PMID: 37916958). 37916958
PIK3CA Q859H PIK3CA H1047R breast cancer resistant Taselisib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA Q859H was resistant to Taselisib (GDC-0032) in culture (PMID: 37916958). 37916958
PIK3CA Q859H PIK3CA H1047R breast cancer sensitive Pictilisib Preclinical - Cell culture Actionable In a preclinical study, Pictilisib (GDC-0941) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA Q859H in culture (PMID: 37916958). 37916958
PIK3CA Q859H PIK3CA H1047R breast cancer sensitive Miransertib Preclinical - Cell culture Actionable In a preclinical study, Miransertib (ARQ092) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA Q859H in culture (PMID: 37916958). 37916958
PIK3CA Q859H PIK3CA H1047R breast cancer sensitive Ipatasertib Preclinical - Cell culture Actionable In a preclinical study, Ipatasertib (GDC-0068) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA Q859H in culture (PMID: 37916958). 37916958
PIK3CA Q859H PIK3CA H1047R breast cancer sensitive RLY-2608 Preclinical - Cell culture Actionable In a preclinical study, RLY-2608 inhibited downstream signaling and viability in a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA Q859H in culture (PMID: 37916958). 37916958
PIK3CA Q859K PIK3CA H1047R breast cancer resistant Alpelisib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA Q859K was resistant to Piqray (alpelisib) in culture (PMID: 37916958). 37916958
PIK3CA Q859K PIK3CA H1047R breast cancer resistant Inavolisib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA Q859K was resistant to Inavolisib (GDC-0077) in culture (PMID: 37916958). 37916958
PIK3CA Q859K PIK3CA H1047R breast cancer resistant Taselisib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA Q859K was resistant to Taselisib (GDC-0032) in culture (PMID: 37916958). 37916958
PIK3CA Q859K PIK3CA H1047R breast cancer sensitive Pictilisib Preclinical - Cell culture Actionable In a preclinical study, Pictilisib (GDC-0941) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA Q859K in culture (PMID: 37916958). 37916958
PIK3CA Q859K PIK3CA H1047R breast cancer sensitive Miransertib Preclinical - Cell culture Actionable In a preclinical study, Miransertib (ARQ092) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA Q859K in culture (PMID: 37916958). 37916958
PIK3CA Q859K PIK3CA H1047R breast cancer sensitive Ipatasertib Preclinical - Cell culture Actionable In a preclinical study, Ipatasertib (GDC-0068) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA Q859K in culture (PMID: 37916958). 37916958
PIK3CA Q859K PIK3CA H1047R breast cancer sensitive RLY-2608 Preclinical - Cell culture Actionable In a preclinical study, RLY-2608 inhibited downstream signaling and viability in a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA Q859K in culture (PMID: 37916958). 37916958
PIK3CA I817F PIK3CA H1047R breast cancer sensitive Alpelisib Preclinical - Cell culture Actionable In a preclinical study, Piqray (alpelisib) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA I817F in culture (PMID: 37916958). 37916958
PIK3CA I817F PIK3CA H1047R breast cancer sensitive Inavolisib Preclinical - Cell culture Actionable In a preclinical study, Inavolisib (GDC-0077) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA I817F in culture (PMID: 37916958). 37916958
PIK3CA I817F PIK3CA H1047R breast cancer sensitive Taselisib Preclinical - Cell culture Actionable In a preclinical study, Taselisib (GDC-0032) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA I817F in culture (PMID: 37916958). 37916958
PIK3CA I817F PIK3CA H1047R breast cancer sensitive Pictilisib Preclinical - Cell culture Actionable In a preclinical study, Pictilisib (GDC-0941) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA I817F in culture (PMID: 37916958). 37916958
PIK3CA I817F PIK3CA H1047R breast cancer sensitive Miransertib Preclinical - Cell culture Actionable In a preclinical study, Miransertib (ARQ092) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA I817F in culture (PMID: 37916958). 37916958
PIK3CA I817F PIK3CA H1047R breast cancer sensitive Ipatasertib Preclinical - Cell culture Actionable In a preclinical study, Ipatasertib (GDC-0068) decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA I817F in culture (PMID: 37916958). 37916958
PIK3CA I817F PIK3CA H1047R breast cancer sensitive RLY-2608 Preclinical - Cell culture Actionable In a preclinical study, RLY-2608 treatment decreased viability of a breast cancer cell line harboring PIK3CA H1047R and expressing PIK3CA I817F in culture (PMID: 37916958). 37916958
PIK3CA P539R PIK3CA H1047R PTEN del breast cancer sensitive MEN1611 Preclinical - Cell culture Actionable In a preclinical study, MEN1611 (CH5132799) inhibited viability in a breast cancer cell line with deletion of PTEN and harboring PIK3CA H1047R and P539R in culture (PMID: 36913051). 36913051
PIK3CA E453K PIK3CA H1047R estrogen-receptor positive breast cancer predicted - sensitive RLY-2608 Case Reports/Case Series Actionable In a clinical case study, treatment with RLY-2608 resulted in a partial response with a reduction in liver, lung, and soft tissue target lesions in a patient with ESR1/PGR-positive, ERBB2 (HER2)-low breast cancer harboring PIK3CA H1047R and PIK3CA E453K (PMID: 37916956; NCT05216432). 37916956