SPTY2D1
protein-codingSPT2 chromatin protein domain containing 1
Gene summary
Enables DNA binding activity; histone binding activity; and histone chaperone activity. Involved in heterochromatin formation; nucleosome assembly; and regulation of DNA-templated transcription. Located in nucleolus and nucleoplasm. [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 ~28.4 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 SPTY2D1 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_194285.3. 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 | 3 | 3 | ||||
| missense | 92 | 6 | 98 | |||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 1 | 1 | ||||
| splice donor/acceptor (+/-2bp) | 0 | |||||
| Total | 1 | 0 | 92 | 9 | 0 | 102 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_919261.2 | 6 | MANE Select | |
| Ensembl | ENSP00000337991.5 | 6 | MANE Select | |
| Ensembl | ENSP00000807703.1 | 6 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Biological Process
- nucleosome assembly
- regulation of transcription, DNA-templated
- regulation of chromatin assembly
- histone exchange
Molecular Function
- RNA polymerase I core binding
- DNA binding
- histone binding
Cellular Component
- cellular_component
- nucleolus
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000336349
- Coding exons
- 6
- Length
- 28391
- Individuals with no LoFs
- 125738
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 10
- Defined
- 125748
- p
- 0.0000398
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 1.02 | 319 | 375 | 0.851 | 0.0000202 | 4470 |
| Missense (PolyPhen) | 42 | 66.336 | 0.63314 | 712 | ||
| Synonymous | -0.141 | 131 | 129 | 1.02 | 0.00000644 | 1355 |
| Loss of Function | 4.35 | 5 | 31.2 | 0.160 | 0.00000247 | 338 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0.000062 | 0.000062 | rare |
| Latino/Admixed American | 0.000087 | 0.000087 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0 | 0.0 | absent |
| Finnish | 0.000046 | 0.000046 | rare |
| European (Non-Finnish) | 0.000044 | 0.000044 | rare |
| South Asian | 0 | 0.0 | absent |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Histone chaperone that stabilizes pre-existing histone tetramers and regulates replication-independent histone exchange on chromatin (PubMed:26109053). Required for normal chromatin refolding in the coding region of transcribed genes, and for the suppression of spurious transcription (PubMed:26109053). Binds DNA and histones and promotes nucleosome assembly (in vitro) (PubMed:23378026, PubMed:26109053). Facilitates formation of tetrameric histone complexes containing histone H3 and H4 (PubMed:26109053). Modulates RNA polymerase 1-mediated transcription (By similarity). Binds DNA, with a preference for branched DNA species, such as Y-form DNA and Holliday junction DNA (PubMed:23378026). {ECO:0000250|UniProtKB:E1BUG7, ECO:0000269|PubMed:23378026}.;
Intolerance Scores
- LoFtool
- 0.423
- RVIS EVS
- 0.35
- RVIS percentile EVS
- 74.58
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- N
- Indispensability score
- 0.499
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |