RELEASE NOTES

IMPC Data Release 24.0 Notes

16 March 2026

Summary

Number of phenotyped genes: 9,605
Number of phenotyped mutant lines:
10,341
Number of phenotype calls: 111,664

Data access

FTP interface 
Statistical package: OpenStats (1.20.0)
Genome Assembly: Mus musculus (GRCm39)

Highlights

Release notes

Represents a major data release.

This release includes:

  • Approximately 4.5 million more data points.
  • The release contains 2,139 fewer phenotype calls than the previous release due to the removal of duplicated Histopathology and Gross Pathology phenotypes.
  • The data reports have been restructured to ensure they are machine readable and outdated links have been updated. In addition, several data issues have been fixed for the viability and procedureCompletenessAndPhenotypeHits reports. Please see the README file for more information.
  • This release uses an updated annotation pipeline that improves MP term assignment for sex specific terms.
  • A procedure sequence_id was included for metadata group determination in minispec data from GMC for late adult pipelines to enable grouping of the appropriate datasets for analysis and display on the website.
  • Links to the Tremblay lab early lethal phenotype data have been added.

Total number of lines and specimens in DR 24.0

CCP-IMG4954,7459,132
MRC Harwell8467,51020,644
UC Davis1,71410,09042,175
RBRC1162,3982,715
KMPC1133,5844,344
WTSI1,6215,36418,660
TCP7989,72032,258
BCM1,32510,63339,720
ICS2412,6423,914
HMGU6028,34512,092
JAX2,23817,13164,019
MARC2331,8583,588

Experimental data and quality checks

categorical 29,448,975
time series *31,384,597
image record *878,279
unidimensional 26,509,567
ontological *2,169,851
text *701,700
* Excluded from statistical analysis.

Distribution of phenotype annotations

Production status

Overall

ES Cell Null Lines

ES Cell Conditional Lines

Crispr Null Lines

Crispr Conditional Lines

Phenotyping

By Center

ES Cell Null Lines

ES Cell Conditional Lines

Crispr Null Lines

Crispr Conditional Lines

Phenotyping

More charts and status information are available from our mouse tracking service GenTaR.

Phenotype associations

Trends

Genes/Mutant Lines/MP CallsBy Data Release
Data Points by Data Release

Previous releases

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