# NUMA1

Source: https://onco.cc/targets/numa1/  
OnCo record `numa1` (Target). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

NUMA1 (Nuclear mitotic apparatus protein 1) is a gene whose normal job is to hold cell growth in check. The public catalogues list it as a tumour suppressor, and it is called a cancer driver by mutation analysis of patient cohorts. Tied to Breast cancer, Oesophageal cancer and Oesophageal and junctional adenocarcinoma.

## Summary

Microtubule (MT)-binding protein that plays a role in the formation and maintenance of the spindle poles and the alignement and the segregation of chromosomes during mitotic cell division. Functions to tether the minus ends of MTs at the spindle poles, which is critical for the establishment and maintenance of the spindle poles. Plays a role in the establishment of the mitotic spindle orientation during metaphase and elongation during anaphase in a dynein-dynactin-dependent manner.

IntOGen calls it a driver in 2 cohorts (0 activating, 2 loss-of-function), covering Invasive Breast Carcinoma, Oesophageal Adenocarcinoma.

## Fields

- Kind: Target
- Last checked: 2026-09-23
- Also known as: nuclear mitotic apparatus protein 1; Nuclear mitotic apparatus protein 1
- Tags: cancer-genes-wave
- Symbol: NUMA1
- Class: tumor-suppressor
- Biology: Microtubule (MT)-binding protein that plays a role in the formation and maintenance of the spindle poles and the alignement and the segregation of chromosomes during mitotic cell division. Functions to tether the minus ends of MTs at the spindle poles, which is critical for the establishment and maintenance of the spindle poles. Plays a role in the establishment of the mitotic spindle orientation during metaphase and elongation during anaphase in a dynein-dynactin-dependent manner. In metaphase, part of a ternary complex composed of GPSM2 and G(i) alpha proteins, that regulates the recruitment and anchorage of the dynein-dynactin complex in the mitotic cell cortex regions situated above the two spindle poles, and hence regulates the correct oritentation of the mitotic spindle. During anaphase, mediates the recruitment and accumulation of the dynein-dynactin complex at the cell membrane of the polar cortical region through direct association with phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2), and hence participates in the regulation of the spindle elongation and chromosome segregation. Also binds to other polyanionic phosphoinositides, such as phosphatidylinositol 3-phosphate (PIP), lysophosphatidic acid (LPA) and phosphatidylinositol triphosphate (PIP3), in vitro. Location: Nucleus; Nucleus, nucleoplasm; Nucleus matrix; Chromosome (UniProt). Locus 11q13.4 (HGNC).
- Where found: Breast cancer: IntOGen driver in 1 cohort (BRCA); Oesophageal cancer: IntOGen driver in 1 cohort (ESCA); Oesophageal and junctional adenocarcinoma: IntOGen driver in 1 cohort (ESCA)

## Notes

- Written by scripts/fetch-cancer-genes.ts from CIViC, Open Targets, IntOGen, HGNC and UniProt; the function text is UniProt's, condensed and in UK spelling. Roles: IntOGen calls it a loss-of-function (LoF) driver in 2 cohorts. Evidence tier "cohort-driver" is the strongest of those signals.
- Prevalence not recorded: none of the sources gives a positivity rate.

## Sources

- HGNC HGNC:8059: https://www.genenames.org/data/gene-symbol-report/#!/hgnc_id/HGNC:8059
- UniProt Q14980: https://www.uniprot.org/uniprotkb/Q14980/entry
- NCBI Gene 4926: https://www.ncbi.nlm.nih.gov/gene/4926
- Ensembl ENSG00000137497: https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000137497

## Connected records

- collections: [IntOGen](https://onco.cc/collections/intogen/)
- cancers: [Breast cancer (all types)](https://onco.cc/cancers/breast-cancer/), [Oesophageal and junctional adenocarcinoma](https://onco.cc/cancers/oesophageal-adenocarcinoma/), [Oesophageal cancer](https://onco.cc/cancers/esophageal/)

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JSON: https://onco.cc/api/v1/entities/numa1.json