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Gene | PTEN |
Variant | T383A |
Impact List | missense |
Protein Effect | unknown |
Gene Variant Descriptions | PTEN T383A does not lie within any known functional domains of the Pten protein (UniProt.org). The functional effect of T383A is conflicting, as it results in nuclear localization similar to wild-type Pten (PMID: 25823029), however, leads to increased nuclear localization (PMID: 16807353), and retains the ability to undergo phosphorylation by Topk (PMID: 24012691) and the ability to respond to PIP2, but demonstrates reduced lipid phosphatase activity, impaired membrane localization (PMID: 17565999), reduced protein stability, increased cell cycle arrest and FKHR transcriptional activation (PMID: 10866658, PMID: 11035045), and increased ubiquitination in culture (PMID: 11431330), and therefore, its effect on Pten protein function is unknown. |
Associated Drug Resistance | |
Category Variants Paths |
PTEN mutant PTEN T383A |
Transcript | NM_000314.8 |
gDNA | chr10:g.87965407A>G |
cDNA | c.1147A>G |
Protein | p.T383A |
Source Database | RefSeq |
Genome Build | GRCh38/hg38 |
Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
---|---|---|---|---|---|
NM_001304717.5 | chr10:g.87952253A>G | c.1147A>G | p.T383A | RefSeq | GRCh38/hg38 |
NM_000314.6 | chr10:g.87965407A>G | c.1147A>G | p.T383A | RefSeq | GRCh38/hg38 |
NM_000314.8 | chr10:g.87965407A>G | c.1147A>G | p.T383A | RefSeq | GRCh38/hg38 |
Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
---|---|---|---|---|---|---|---|
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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 |
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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 |