> Trialight public data. Index of pages: https://trialight.com/llms.txt
> Web page: https://trialight.com/data/target/esr2-3e669f23-0238-54c8-a6ae-0a2fc6dabdfa
> Record changed: 2026-11-04

# ESR2

ENSG00000140009

Target class

Nuclear receptor

Chromosome

14

Approved drugs

17

Clinical candidates (approved and in development)

32

## Clinical evidence

**Approved drugs**

17

**Clinical candidates (approved and in development)**

32

## Druggability

**Chemical probe available**

Yes

## Names

**Target name**

ESR2

**Gene name**

Estrogen receptor 2

**Gene symbol**

ESR2

**Protein name**

Estrogen receptor beta (ER-beta) (Nuclear receptor subfamily 3 group A member 2)

### Other names (3)

- NR3A2
- Erb
- ER-beta

## Classification

**Gene biotype**

Protein coding

**Gene family**

Estrogen receptors

**Target class**

Nuclear receptor

**Target type**

Human gene

## Expression and localisation

**Tissues expressed in**

10

**Protein localisation evidence grade**

Supported

**Highest tissue expression**

4.63

**Tissue specificity (Gini)**

0.561

**Tissue specificity (tau)**

0.869

## Pathways and interactions

**KEGG gene identifiers**

- hsa:2100

**Protein interaction confidence**

0.871153

**Protein interaction partners**

59

### Reactome pathways (6)

- R-HSA-1257604
- R-HSA-2219530
- R-HSA-383280
- R-HSA-6811558
- R-HSA-8939211
- R-HSA-9009391

## Genomic location

**End position**

64338112

**Start position**

64084232

**Chromosome**

14

**Strand**

Reverse

## Identifiers

**Ensembl gene ID**

ENSG00000140009

**HGNC ID**

HGNC:3468

Source: [www.genenames.org](https://www.genenames.org/data/gene-symbol-report/#!/hgnc%5Fid/HGNC:3468)

**NCBI Gene ID**

2100

**UniProt ID**

Q92731

## Cellular location

- Nucleus .
- Nucleoplasm

### Publication evidence (2)

- PubMed 19126643  
Source: [pubmed.ncbi.nlm.nih.gov](https://pubmed.ncbi.nlm.nih.gov/19126643/)
- PubMed 20074560  
Source: [pubmed.ncbi.nlm.nih.gov](https://pubmed.ncbi.nlm.nih.gov/20074560/)

## Tissue expression

**Tissue specificity (tau)**

0.86878

**Expression inequality (Gini)**

0.561222

### Highest expression

Expression in transcripts per million

**Ovary**

4.63

**Testis**

3.85

**Adrenal Gland**

3.56

**Cells - EBV-transformed lymphocytes**

2.26

**Cervix - Endocervix**

1.4

### All tissues (54)

Expression in transcripts per million

- Ovary4.63
- Testis3.85
- Adrenal Gland3.56
- Cells - EBV-transformed lymphocytes2.26
- Cervix - Endocervix1.4
- Spleen1.26
- Prostate1.08
- Kidney - Medulla1.08
- Uterus1.08
- Fallopian Tube1.06
- Adipose - Subcutaneous0.83
- Pituitary0.79
- Breast - Mammary Tissue0.73
- Thyroid0.68
- Small Intestine - Terminal Ileum0.68
- Brain - Cerebellum0.66
- Skin - Not Sun Exposed (Suprapubic)0.63
- Lung0.62
- Cervix - Ectocervix0.62
- Minor Salivary Gland0.61
- Adipose - Visceral (Omentum)0.61
- Brain - Cerebellar Hemisphere0.61
- Kidney - Cortex0.56
- Bladder0.54
- Nerve - Tibial0.53

And 29 more, listed on the interactive page.

## Biological functions

### Biological processes (6)

- GO:0000122  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0000122)
- GO:0006355  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0006355)
- GO:0007165  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0007165)
- GO:0007267  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0007267)
- GO:0030520  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0030520)
- GO:0045893  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0045893)

### Cellular components (3)

- GO:0005634  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0005634)
- GO:0005654  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0005654)
- GO:0005739  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0005739)

### Molecular functions (9)

- GO:0000978  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0000978)
- GO:0003677  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0003677)
- GO:0003707  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0003707)
- GO:0004879  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0004879)
- GO:0005496  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0005496)
- GO:0005515  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0005515)
- GO:0019899  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0019899)
- GO:0030284  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0030284)
- GO:0034056  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0034056)

## Off-target safety

- regulation of transcription factor activity  
### Studies (3)

  - cell-based: TOX21\_ERb\_BLA\_Agonist\_ratio is an assay readout measuring reporter gene via receptor activity and designed using inducible reporter (beta lactamase induction) detected with GAL4 b-lactamase reporter gene. The signal is derived from the ratio of cleaved (ch2) to uncleaved (ch1) reporter gene substrate used as the measure of target activity.
  - cell-based: TOX21\_ERb\_BLA\_Antagonist\_ratio is an assay readout measuring reporter gene via receptor activity and designed using inducible reporter (beta lactamase induction) detected with GAL4 b-lactamase reporter gene. The signal is derived from the ratio of cleaved (ch2) to uncleaved (ch1) reporter gene substrate used as the measure of target activity.
  - cell-based  
### Biological samples (2)

  - HEK293T, cell line
  - HepG2, cell line  
Evidence source  
Source: [www.epa.gov](https://www.epa.gov/chemical-research/exploring-toxcast-data-downloadable-data)
- protein stabilization  
### Studies (4)

  - cell-based: OT\_ER\_ERbERb\_0480, is one of one assay component(s) measured or calculated from the OT\_ER\_ERbERb\_0480 assay. It is designed to make measurements of protein fragment complementation, a form of binding reporter, as detected with fluorescence intensity signals by Protein-fragment Complementation technology.
  - cell-based: OT\_ER\_ERbERb\_1440, is one of one assay component(s) measured or calculated from the OT\_ER\_ERbERb\_1440 assay. It is designed to make measurements of protein fragment complementation, a form of binding reporter, as detected with fluorescence intensity signals by Protein-fragment Complementation technology.
  - cell-based: OT\_ER\_ERaERb\_1440, is one of one assay component(s) measured or calculated from the OT\_ER\_ERaERb\_1440 assay. It is designed to make measurements of protein fragment complementation, a form of binding reporter, as detected with fluorescence intensity signals by Protein-fragment Complementation technology.
  - cell-based: OT\_ER\_ERaERb\_0480, is one of one assay component(s) measured or calculated from the OT\_ER\_ERaERb\_0480 assay. It is designed to make measurements of protein fragment complementation, a form of binding reporter, as detected with fluorescence intensity signals by Protein-fragment Complementation technology.  
### Biological samples

  - HEK293T, cell line  
Evidence source  
Source: [www.epa.gov](https://www.epa.gov/chemical-research/exploring-toxcast-data-downloadable-data)
- regulation of steroid biosynthetic process  
### Studies (4)

  - cell-based: CEETOX\_H295R\_ESTRONE, is one of 23 assay component(s) measured or calculated from the CEETOX\_H295R assay. It is designed to make measurements of hormone induction, a form of inducible reporter, as detected with absorbance signals by HPLC-MS-MS technology.
  - cell-based: CEETOX\_H295R\_ESTRADIOL, is one of 23 assay component(s) measured or calculated from the CEETOX\_H295R assay. It is designed to make measurements of hormone induction, a form of inducible reporter, as detected with absorbance signals by HPLC-MS-MS technology.
  - cell-based: CEETOX\_H295R\_ESTRADIOL, is one of 23 assay component(s) measured or calculated from the CEETOX\_H295R assay. It is designed to make measurements of hormone induction, a form of inducible reporter, as detected with absorbance signals by HPLC-MS-MS technology.
  - cell-based: CEETOX\_H295R\_ESTRONE, is one of 23 assay component(s) measured or calculated from the CEETOX\_H295R assay. It is designed to make measurements of hormone induction, a form of inducible reporter, as detected with absorbance signals by HPLC-MS-MS technology.  
### Biological samples

  - H295R, cell line  
Evidence source  
Source: [www.epa.gov](https://www.epa.gov/chemical-research/exploring-toxcast-data-downloadable-data)
- regulation of steroid hormone biosynthetic process  
### Studies (5)

  - cell-based: one of 12 assay component(s) measured or calculated from the CEETOX\_H295R assay (11 hormones and 1 viability assay). It is designed to make measurements of hormone induction, a form of inducible reporter, as detected with absorbance signals by HPLC-MS-MS technology. The concentrations for these components have not been pre-filtered for the maximum tolerated concentration (MTC) based on the MTT assay (\_noMTC).
  - cell-based: one of 12 assay component(s) measured or calculated from the CEETOX\_H295R assay (11 hormones and 1 viability assay). It is designed to make measurements of hormone induction, a form of inducible reporter, as detected with absorbance signals by HPLC-MS-MS technology. The concentrations for these components have not been pre-filtered for the maximum tolerated concentration (MTC) based on the MTT assay (\_noMTC).
  - cell-based: one of 12 assay component(s) measured or calculated from the CEETOX\_H295R assay (11 hormones and 1 viability assay). It is designed to make measurements of hormone induction, a form of inducible reporter, as detected with absorbance signals by HPLC-MS-MS technology. The concentrations for these components have not been pre-filtered for the maximum tolerated concentration (MTC) based on the MTT assay (\_noMTC).
  - cell-based: one of 12 assay component(s) measured or calculated from the CEETOX\_H295R assay (11 hormones and 1 viability assay). It is designed to make measurements of hormone induction, a form of inducible reporter, as detected with absorbance signals by HPLC-MS-MS technology. The concentrations for these components have not been pre-filtered for the maximum tolerated concentration (MTC) based on the MTT assay (\_noMTC).
  - cell-based: one of 12 assay component(s) measured or calculated from the CEETOX\_H295R assay (11 hormones and 1 viability assay). It is designed to make measurements of hormone induction, a form of inducible reporter, as detected with absorbance signals by HPLC-MS-MS technology. The concentrations for these components have not been pre-filtered for the maximum tolerated concentration (MTC) based on the MTT assay (\_noMTC).  
### Biological samples

  - H295R, cell line  
Evidence source  
Source: [www.epa.gov](https://www.epa.gov/chemical-research/exploring-toxcast-data-downloadable-data)

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### Drugs (48)

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- Acolbifene hydrochloride Estrogen receptor modulator
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- Chlorotrianisene Estrogen receptor beta modulator
- CR 1447 Estrogen receptor beta agonist
- Cyclofenil Estrogen receptor modulator
- Diethylstilbestrol
- Diethylstilbestrol diphosphate Estrogen receptor agonist
- Droloxifene Estrogen receptor modulator
- Droloxifene citrate Estrogen receptor modulator
- Erteberel Estrogen receptor beta agonist
- Estetrol Estrogen receptor agonist
- Estetrol anhydrous Estrogen receptor agonist

---

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