NPM2
protein-codingnucleophosmin/nucleoplasmin 2
Gene summary
Predicted to enable RNA binding activity; chromatin binding activity; and histone binding activity. Involved in several processes, including blastocyst development; oocyte differentiation; and regulation of cell cycle process. Located in chromatin and nucleus. [provided by Alliance of Genome Resources, Jul 2025]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~12.8 kbGenCC Phenotypes & Disease Associations
Curated gene-disease validity assertions and inheritance patterns
No GenCC data available for this gene.
ClinVar Associated Diseases & Phenotypes
Reported disease conditions connected to NPM2 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_001286680.2. Only rare variants are included.
We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.
Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.
| Effect | PathogenicP | Likely pathogenicLP | VUS | Likely benignLB | BenignB | Sum |
|---|---|---|---|---|---|---|
| synonymous | 1 | 1 | ||||
| missense | 41 | 2 | 43 | |||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 1 | 1 | ||||
| Total | 0 | 0 | 42 | 2 | 1 | 45 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_001273609.1 | 8 | MANE Select | |
| Ensembl | ENSP00000427741.1 | 8 | MANE Select | |
| RefSeq | NP_001273610.1 | 6 | Standard | |
| RefSeq | NP_001400042.1 | 8 | Standard |
Model Organisms & Knockout Phenotypes
Observed phenotypic effects in mouse and zebrafish models
| Gene / Model | Organism | Observed Phenotype |
|---|---|---|
| npm2b | Danio rerio | Structure: whole organism Quality: dead abnormal |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Biological Process
- blastocyst development
- chromatin remodeling
- regulation of exit from mitosis
- single fertilization
- oocyte differentiation
Molecular Function
- chromatin binding
- protein binding
- enzyme binding
- histone binding
Cellular Component
- cytoplasmic chromatin
- nuclear chromatin
- nucleus
- nucleoplasm
- nucleolus
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000397940
- Coding exons
- 8
- Length
- 12773
- Individuals with no LoFs
- 125697
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 51
- Defined
- 125748
- p
- 0.000203
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | -0.223 | 123 | 116 | 1.06 | 0.00000615 | 1395 |
| Missense (PolyPhen) | 44 | 34.188 | 1.287 | 399 | ||
| Synonymous | 0.0951 | 43 | 43.8 | 0.982 | 0.00000235 | 382 |
| Loss of Function | 1.70 | 7 | 13.8 | 0.506 | 5.90e-7 | 167 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0.00025 | 0.00025 | rare |
| Latino/Admixed American | 0.00026 | 0.00026 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0.00017 | 0.00016 | rare |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.00027 | 0.00027 | rare |
| South Asian | 0.00014 | 0.00013 | rare |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Core histones chaperone involved in chromatin reprogramming, specially during fertilization and early embryonic development. Probably involved in sperm DNA decondensation during fertilization. {ECO:0000269|PubMed:21863821}.;
Recessive Scores
- pRec
- 0.0900
Intolerance Scores
- LoFtool
- 0.815
- RVIS EVS
- 0.39
- RVIS percentile EVS
- 76.05
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- E
- Indispensability score
- 0.564
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |