SKA1
Basic information
Region (hg38): 18:50375039-50394168
Previous symbols: [ "C18orf24" ]
Links
Phenotypes
GenCC
Source:
ClinVar
This is a list of variants' phenotypes submitted to
Variants pathogenicity by type
Statistics on ClinVar variants can assist in determining whether a specific variant type in the SKA1 gene is commonly pathogenic or not.
In the table, we include only reliable ClinVar variants with their consequences to MANE Select, Mane Plus Clinical transcripts, or transcripts with TSL equals 1. Click the count to view the source variants.
Warning: slight differences between displayed counts and the number of variants in ClinVar may occur, primarily due to (1) the application of a different transcript and/or consequence by our variant effect predictor or (2) differences in clinical significance: we classify Benign/Likely benign variants as Likely benign and Pathogenic/Likely pathogenic variants as Likely pathogenic.
| Variant type | Pathogenic | Likely pathogenic | VUS | Likely benign | Benign | Sum |
|---|---|---|---|---|---|---|
| synonymous | 0 | |||||
| missense | 4 | |||||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| inframe indel | 0 | |||||
| splice donor/acceptor (+/-2bp) | 0 | |||||
| splice region | 0 | |||||
| non coding | 0 | |||||
| Total | 0 | 0 | 3 | 1 | 0 |
Variants in SKA1
This is a list of pathogenic ClinVar variants found in the SKA1 region.
You can filter this list by clicking the number of variants in the Variants pathogenicity by type table.
| Position | Type | Phenotype | Significance | ClinVar |
|---|---|---|---|---|
| 18-50380191-C-T | not specified | Uncertain significance (Jan 04, 2024) | ||
| 18-50385235-G-T | not specified | Uncertain significance (Jun 19, 2024) | ||
| 18-50391138-G-A | not specified | Uncertain significance (Dec 14, 2023) | ||
| 18-50391230-A-G | not specified | Uncertain significance (Aug 02, 2021) | ||
| 18-50392102-G-A | not specified | Likely benign (Jun 11, 2021) |
GnomAD
Source:
| Gene | Type | Bio Type | Transcript | Coding Exons | Length |
|---|---|---|---|---|---|
| SKA1 | protein_coding | protein_coding | ENST00000285116 | 6 | 19179 |
| pLI Probability LOF Intolerant | pRec Probability LOF Recessive | Individuals with no LOFs | Individuals with Homozygous LOFs | Individuals with Heterozygous LOFs | Defined | p |
|---|---|---|---|---|---|---|
| 0.0000170 | 0.690 | 125655 | 0 | 56 | 125711 | 0.000223 |
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible in Transcript | |
|---|---|---|---|---|---|---|
| Missense | 1.02 | 95 | 127 | 0.747 | 0.00000643 | 1672 |
| Missense in Polyphen | 20 | 34.916 | 0.5728 | 503 | ||
| Synonymous | 0.219 | 42 | 43.8 | 0.958 | 0.00000217 | 452 |
| Loss of Function | 0.999 | 9 | 12.9 | 0.700 | 7.31e-7 | 179 |
LoF frequencies by population
| Ethnicity | Sum of pLOFs | p |
|---|---|---|
| African & African-American | 0.000190 | 0.000185 |
| Ashkenazi Jewish | 0.000800 | 0.000794 |
| East Asian | 0.000164 | 0.000163 |
| Finnish | 0.0000463 | 0.0000462 |
| European (Non-Finnish) | 0.000331 | 0.000325 |
| Middle Eastern | 0.000164 | 0.000163 |
| South Asian | 0.00 | 0.00 |
| Other | 0.000682 | 0.000652 |
dbNSFP
Source:
- Function
- FUNCTION: Component of the SKA1 complex, a microtubule-binding subcomplex of the outer kinetochore that is essential for proper chromosome segregation (PubMed:17093495, PubMed:19289083, PubMed:23085020). Required for timely anaphase onset during mitosis, when chromosomes undergo bipolar attachment on spindle microtubules leading to silencing of the spindle checkpoint (PubMed:17093495). The SKA1 complex is a direct component of the kinetochore-microtubule interface and directly associates with microtubules as oligomeric assemblies (PubMed:19289083). The complex facilitates the processive movement of microspheres along a microtubule in a depolymerization-coupled manner (PubMed:19289083). Affinity for microtubules is synergistically enhanced in the presence of the ndc-80 complex and may allow the ndc-80 complex to track depolymerizing microtubules (PubMed:23085020). In the complex, it mediates the interaction with microtubules (PubMed:19289083, PubMed:23085020). {ECO:0000269|PubMed:17093495, ECO:0000269|PubMed:19289083, ECO:0000269|PubMed:23085020}.;
- Pathway
- Signal Transduction;Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal;Amplification of signal from the kinetochores;Mitotic Spindle Checkpoint;Cell Cycle Checkpoints;RHO GTPases Activate Formins;RHO GTPase Effectors;Signaling by Rho GTPases;Mitotic Prometaphase;Separation of Sister Chromatids;Mitotic Anaphase;Mitotic Metaphase and Anaphase;M Phase;Cell Cycle;Resolution of Sister Chromatid Cohesion;Cell Cycle, Mitotic
(Consensus)
Recessive Scores
- pRec
- 0.0780
Intolerance Scores
- loftool
- 0.909
- rvis_EVS
- 0.26
- rvis_percentile_EVS
- 70.26
Haploinsufficiency Scores
- pHI
- 0.0796
- hipred
- Y
- hipred_score
- 0.531
- ghis
- 0.539
Essentials
- essential_gene_CRISPR
- E
- essential_gene_CRISPR2
- E
- essential_gene_gene_trap
- E
- gene_indispensability_pred
- E
- gene_indispensability_score
- 0.731
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |
Mouse Genome Informatics
- Gene name
- Ska1
- Phenotype
Gene ontology
- Biological process
- mitotic cell cycle;chromosome segregation;regulation of microtubule polymerization or depolymerization;cell division
- Cellular component
- condensed chromosome outer kinetochore;cytosol;spindle microtubule;microtubule cytoskeleton
- Molecular function
- protein binding;microtubule binding