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Gene PTEN
Variant Q396R
Impact List missense
Protein Effect no effect - predicted
Gene Variant Descriptions PTEN Q396R does not lie within any known functional domains of the Pten protein (UniProt.org). Q396R demonstrates increased suppression of Akt phosphorylation, but leads to Pten protein stability similar to wild-type Pten in cell culture (PMID: 32350270), and therefore, is predicted to have no effect on Pten protein function.
Associated Drug Resistance
Category Variants Paths

PTEN mutant PTEN Q396R

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Transcript NM_000314.8
gDNA chr10:g.87965447A>G
cDNA c.1187A>G
Protein p.Q396R
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_000314.8 chr10:g.87965447A>G c.1187A>G p.Q396R RefSeq GRCh38/hg38
NM_000314 chr10:g.87965447A>G c.1187A>G p.Q396R RefSeq GRCh38/hg38
NM_000314.6 chr10:g.87965447A>G c.1187A>G p.Q396R RefSeq GRCh38/hg38

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
PTEN mutant breast cancer sensitive Sapanisertib Preclinical Actionable In a preclinical study, Sapanisertib (MLN0128) induced apoptosis and inhibited MTORC1 signaling in breast cancer cells harboring a PTEN mutation (PMID: 25261369). 25261369
PTEN mutant endometrial cancer sensitive A66 + AZD6482 Preclinical Actionable In a preclinical study, A66 and AZD6482 combination treatment inhibited viability of endometrioid endometrial cancer cell lines harboring PTEN mutations in culture (PMID: 23674493). 23674493
PTEN mutant head and neck squamous cell carcinoma resistant Taselisib Preclinical - Cell line xenograft Actionable In a preclinical study, head and neck squamous cell carcinoma cell lines and cell line xenograft models with PTEN alterations were resistant to the apoptotic effects of Taselisib (GDC-0032) (PMID: 26589432). 26589432
PTEN mutant endometrial cancer resistant TGX-221 Preclinical Actionable In a preclinical study, endometrioid endometrial cancer cell lines harboring PTEN mutations demonstrated resistance to TGX-221 induced growth inhibition in culture (PMID: 23674493). 23674493
PTEN mutant endometrial cancer resistant AZD6482 Preclinical Actionable In a preclinical study, endometrioid endometrial cancer cell lines harboring PTEN mutations demonstrated resistance to AZD6482 induced growth inhibition in culture (PMID: 23674493). 23674493
PTEN mutant lung adenocarcinoma no benefit Capivasertib Case Reports/Case Series Actionable In a Phase II trial (NLMT), Truqap (capivasertib) treatment did not result in a confirmed response (0/8) or durable clinical benefit (0/8) in patients with lung adenocarcinoma harboring mutations in PIK3CA, PTEN, or AKT, thus the cohort was closed due to futility (PMID: 32669708, NCT02664935). 32669708
PTEN mutant uterine cancer sensitive GSK2256098 + Paclitaxel Preclinical Actionable In a preclinical study, uterine cancer cells harboring a PTEN mutation were more sensitive to the combination of GSK2256098 and Taxol (paclitaxel) than uterine cancer cells wild-type for PTEN, resulting in decreased tumor growth in culture and in mouse models (PMID: 25833835). 25833835
PTEN mutant uterine cancer sensitive GSK2256098 + Topotecan Preclinical Actionable In a preclinical study, uterine cancer cells harboring a PTEN mutation were more sensitive to the combination of GSK2256098 and Hycamtin (topotecan) than uterine cancer cells wild-type for PTEN, resulting in decreased tumor growth in culture and in mouse models (PMID: 25833835). 25833835
PTEN mutant skin melanoma not applicable N/A Guideline Risk Factor Germline PTEN mutations or polymorphisms are associated with increased risk of developing single or multiple primary cutaneous melanomas (NCCN.org). detail...
PTEN mutant glioblastoma no benefit Buparlisib + Capmatinib Phase Ib/II Actionable In a Phase Ib/II trial, combination of Buparlisib (BKM120) and Tabrecta (capmatinib) did not reach target exposure due to potential drug-drug interaction, and demonstrated minimal activity in patients with glioblastoma harboring PTEN alterations including deletion, mutation, or negative protein expression, therefore, Phase II of the trial was not initiated (PMID: 31776899; NCT01870726). 31776899
PTEN mutant endometrial cancer sensitive Apitolisib Phase II Actionable In a Phase II trial, Apitolisib (GDC-0980) was poorly tolerated, but demonstrated efficacy in endometrial cancer patients harboring mutations in PIK3CA, PTEN, or AKT1 (J Clin Oncol 32:5s, 2014 (suppl; abstr 5513)). detail...
PTEN mutant breast cancer not applicable N/A Guideline Risk Factor Germline PTEN mutations result in Cowden syndrome, which is associated with increased risk of developing breast cancer (NCCN.org). detail...
PTEN mutant breast cancer predicted - sensitive MS417 + Pictilisib Preclinical - Cell culture Actionable In a preclinical study, Pictilisib (GDC-0941) and MS417 in combination resulted in improved growth inhibition and increased cell death compared to either agent alone in a PTEN-mutant breast cancer cell line in culture (PMID: 26058079). 26058079
PTEN mutant endometrial cancer sensitive A66 + GSK2636771 Preclinical Actionable In a preclinical study, A66 and GSK2636771 combination treatment inhibited viability of endometrioid endometrial cancer cell lines harboring PTEN mutations in culture (PMID: 23674493). 23674493
PTEN mutant endometrial cancer sensitive Dactolisib Preclinical Actionable In a preclinical study, BEZ235 decreased growth of endometrial cancer cells harboring a PTEN nonsense mutation in culture and in xenograft models (PMID: 22662154). 22662154
PTEN mutant endometrial cancer no benefit Temsirolimus Phase II Actionable In a retrospective study of a Phase II trial, mutation status of PTEN was not associated with progression-free survival or response rate in advanced endometrial cancer patients treated with Torisel (temsirolimus) (PMID: 27016228). 27016228
PTEN mutant breast cancer sensitive CUDC-907 Preclinical - Cell culture Actionable In a preclinical study, CUDC-907 inhibited growth of breast cancer cells lines harboring Pten mutations and/or deletions (PMID: 22693356). 22693356
PTEN mutant gastrointestinal system cancer decreased response Pembrolizumab Clinical Study - Cohort Actionable In a retrospective analysis, patients with MSI high, dMMR gastrointestinal tumors including gastric (n=18), colorectal (n=17), cholangiocarcinoma (n=5), small intestine (n=2), pancreatic (n=2), and duodenal cancer (n=1) harboring PTEN mutations demonstrated a decreased objective response rate (21.4 vs 54.8%), overall survival (15.2 vs 25.7 mo), and progression-free survival (4.3 vs 15.6 mo) compared to PTEN-wild-type patients when treated with Keytruda (pembrolizumab) or Opdivo (nivolumab) (PMID: 33926917). 33926917
PTEN mutant endometrial cancer resistant A66 Preclinical Actionable In a preclinical study, endometrioid endometrial cancer cell lines harboring PTEN mutations demonstrated resistance to A66 induced growth inhibition in culture (PMID: 23674493). 23674493
PTEN mutant melanoma sensitive BI-69A11 Preclinical - Cell line xenograft Actionable In a preclinical study, BI-69A11 resulted in antitumor activity in a melanoma cell line harboring a PTEN mutation, including induction of cell death in culture, and in xenograft models, tumor growth inhibition and tumor regression (PMID: 19175524). 19175524
PTEN mutant endometrial cancer resistant GSK2636771 Preclinical Actionable In a preclinical study, endometrioid endometrial cancer cell lines harboring PTEN mutations demonstrated resistance to GSK2636771 induced growth inhibition in culture (PMID: 23674493). 23674493
PTEN mutant endometrial cancer sensitive Everolimus Preclinical - Cell line xenograft Actionable In a preclinical study, Afinitor (everolimus) inhibited growth of endometrial cancer cells harboring a PTEN nonsense mutation in culture and in xenograft models (PMID: 22662154). 22662154
PTEN mutant hepatocellular carcinoma decreased response Sorafenib Clinical Study - Cohort Actionable In a clinical case study, Nexavar (sorafenib) treatment of patients with hepatocellular carcinoma harboring Mtor pathway mutations in PIK3CA, PTEN, TSC2, or TSC1 (n=12), resulted in a lower disease control rate (8.3% vs. 40.2%), shorter progression-free survival (1.9 months vs. 5.3 months) and shorter overall survival (10.4 months vs. 17.9 months) compared to patients without mutations in this pathway (n=67) (PMID: 30373752; NCT01775072). 30373752
PTEN mutant gastrointestinal system cancer decreased response Nivolumab Clinical Study - Cohort Actionable In a retrospective analysis, patients with MSI high, dMMR gastrointestinal tumors including gastric (n=18), colorectal (n=17), cholangiocarcinoma (n=5), small intestine (n=2), pancreatic (n=2), and duodenal cancer (n=1) harboring PTEN mutations demonstrated a decreased objective response rate (21.4 vs 54.8%), overall survival (15.2 vs 25.7 mo), and progression-free survival (4.3 vs 15.6 mo) compared to PTEN-wild-type patients when treated with Keytruda (pembrolizumab) or Opdivo (nivolumab) (PMID: 33926917). 33926917
PTEN mutant uterine cancer sensitive GSK2256098 Preclinical Actionable In a preclinical study, uterine cancer cells harboring a PTEN mutation demonstrated sensitivity to GSK2256098, resulting in inhibition of Ptk2 (Fak) phosphorylation, decreased tumor growth, and apoptosis both in culture and in mouse models (PMID: 25833835). 25833835