> Trialight public data. Index of pages: https://trialight.com/llms.txt
> Web page: https://trialight.com/data/target/top1mt-e2172f07-37c5-503a-a9e8-ad2ff56a5ca9
> Record changed: 2026-11-04

# TOP1MT

ENSG00000184428

Target class

Enzyme

Chromosome

8

## Druggability

**Chemical probe available**

No

## Names

**Target name**

TOP1MT

**Gene name**

DNA topoisomerase I mitochondrial

**Gene symbol**

TOP1MT

**Protein name**

DNA topoisomerase I, mitochondrial (TOP1mt) (EC 5.6.2.1)

## Classification

**Gene biotype**

Protein coding

**Gene family**

Topoisomerases|Mitochondrial nucleoid associated proteins

**Target class**

Enzyme

**Target type**

Human gene

## Expression and localisation

**Tissues expressed in**

51

**Protein localisation evidence grade**

Supported

**Highest tissue expression**

20.1

**Tissue specificity (Gini)**

0.368

**Tissue specificity (tau)**

0.681

## Pathways and interactions

**KEGG gene identifiers**

- hsa:116447

**Protein interaction confidence**

0.8321

**Protein interaction partners**

10

## Genomic location

**End position**

143359979

**Start position**

143304384

**Chromosome**

8

**Strand**

Reverse

## Identifiers

**Ensembl gene ID**

ENSG00000184428

**HGNC ID**

HGNC:29787

Source: [www.genenames.org](https://www.genenames.org/data/gene-symbol-report/#!/hgnc%5Fid/HGNC:29787)

**NCBI Gene ID**

116447

**UniProt ID**

Q969P6

## Cellular location

- Mitochondrion .
- Mitochondria

### Publication evidence

- PubMed 11526219  
Source: [pubmed.ncbi.nlm.nih.gov](https://pubmed.ncbi.nlm.nih.gov/11526219/)

## Tissue expression

**Tissue specificity (tau)**

0.680719

**Expression inequality (Gini)**

0.367638

### Highest expression

Expression in transcripts per million

**Testis**

20.1

**Ovary**

18.68

**Cervix - Endocervix**

16.81

**Cervix - Ectocervix**

15.88

**Thyroid**

12.84

### All tissues (54)

Expression in transcripts per million

- Testis20.1
- Ovary18.68
- Cervix - Endocervix16.81
- Cervix - Ectocervix15.88
- Thyroid12.84
- Vagina12.29
- Skin - Not Sun Exposed (Suprapubic)12.07
- Bladder11.76
- Uterus11.34
- Skin - Sun Exposed (Lower leg)10.68
- Cells - Cultured fibroblasts9.26
- Fallopian Tube8.78
- Esophagus - Mucosa8.68
- Prostate8.38
- Breast - Mammary Tissue8.15
- Adrenal Gland8.13
- Cells - EBV-transformed lymphocytes7.86
- Adipose - Subcutaneous7.8
- Adipose - Visceral (Omentum)7.4
- Artery - Aorta7.28
- Colon - Sigmoid7.21
- Lung7.12
- Spleen7.11
- Liver6.97
- Nerve - Tibial6.96

And 29 more, listed on the interactive page.

## Biological functions

### Cellular components (2)

- GO:0005739  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0005739)
- GO:0042645  
Source: [www.ebi.ac.uk](https://www.ebi.ac.uk/QuickGO/term/GO:0042645)

## Related records

### Trials (264)

- 9-ING-41 in Pediatric Patients With Refractory Malignancies.
- A Bioequivalence Study of Two Oral Formulations of Topotecan in Patients With Advanced Solid Tumors
- A Multi-Arm, Platform Trial For Relapsed Neuroblastoma
- a Multicenter Clinical Trial for the Treatment of Children and Adolescents With Soft Tissue Sarcoma Stage 4
- A Pharmacokinetic Study of Oral Cyclophosphamide and Topotecan in Children With Recurrent Solid Tumors
- A Phase 1b Study of Sevacizumab in Combination With Chemotherapy in Chinese Patients With Platinum-Resistant Recurrent Ovarian Cancer.
- A Phase 2 Study Comparing TAS-102 Versus Topotecan or Amrubicin to Treat Small Cell Lung Cancer Following Platinum-Based Chemotherapy
- A Phase I Study of CCI-779 (Temsirolimus) in Combination With Topotecan in Patients With Gynecologic Malignancies
- A Phase I Study of Oral Topotecan as a Radiosensitizing Agent in Patients With Rectal Carcinoma
- A Phase I Topotecan Study in Subjects With Cancer and Impaired Renal Function
- A Phase I/II Study of Induction Chemotherapy With Daunorubicin, Cytarabine, Topotecan and Etoposide
- A Phase II Study of Paclitaxel and Topotecan With Filgrastim-SD/01 Support For Relapsed and Refractory Aggressive Non-Hodgkin's Lymphoma
- A Phase II Study of Topotecan in Children With Recurrent Wilms Tumor
- A Phase III Study of BD0801 Combined With Chemotherapy in Recurrent, Platinum-resistant Epithelial Ovarian Cancer
- A Pilot Trial of Oral Topotecan for the Treatment of Refractory Advanced Solid Neoplasms Expressing HIF-1a
- A Prospective International Multicenter Clinical Trial for Eyes With Relapsed Retinoblastoma
- A Randomized Study to Compare the Efficacy and Safety of Belotecan and Topotecan as Monotherapy for Sensitive-Relapsed Small Cell Lung Cancer
- A Study Comparing BL-B01D1 With Topotecan in Patients With Recurrent Small Cell Lung Cancer(PANKU-Lung03)
- A Study Comparing BL-M07D1 With Physician's Choice of Chemotherapy in Patients With HER2-Expressing Platinum-Resistant Recurrent Epithelial Ovarian Cancer, Fallopian Tube Cancer, and Primary Peritoneal Cancer
- A Study Evaluating BSI-201 in Combination With Chemotherapeutic Regimens in Subjects With Advanced Solid Tumors

### Drugs (1)

- [Topotecan](https://trialight.com/data/asset/topotecan-6d6bd0ac-4e76-43a7-b97a-0a62e439a24a.md)

---

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