Patch release 4 is the fourth patch release for the GRCm38 assembly. Patch release 4 includes all contents that were in patch release 3. This is a minor release of GRCm38 that does not disrupt the coordinate system in the reference sequence GRCm38.
Total patch scaffolds in this patch release: 122
Patch scaffolds of type FIX: 29
Patch scaffolds of type NOVEL: 93
Data obtained from the FTP site of the Genome Reference Consortium.