STAG3
geneOn this page
Also known as SA3
Summary
STAG3 (STAG3 cohesin complex component, HGNC:11356) is a protein-coding gene on chromosome 7q22.1, encoding Cohesin subunit SA-3 (Q9UJ98). Meiosis specific component of cohesin complex. In precision oncology, STAG3 Underexpression is associated with resistance to Vemurafenib in Melanoma (CIViC Level D).
The protein encoded by this gene is expressed in the nucleus and is a subunit of the cohesin complex which regulates the cohesion of sister chromatids during cell division. A mutation in this gene is associated with premature ovarian failure. Alternate splicing results in multiple transcript variants encoding distinct isoforms. This gene has multiple pseudogenes.
Source: NCBI Gene 10734 — RefSeq curated summary.
At a glance
- Gene–disease (curated): premature ovarian failure 8 (Strong, GenCC) — +1 more curated relationship
- GWAS associations: 5
- Clinical variants (ClinVar): 264 total — 11 pathogenic, 13 likely-pathogenic
- Phenotypes (HPO): 18
- Precision-oncology evidence (CIViC): 1 curated variant–drug association
- MANE Select transcript:
NM_001282717
Identifiers
Gene identifiers
| Field | Value |
|---|---|
| HGNC ID | HGNC:11356 |
| Approved symbol | STAG3 |
| Name | STAG3 cohesin complex component |
| Location | 7q22.1 |
| Locus type | gene with protein product |
| Status | Approved |
| Aliases | SA3 |
| Ensembl gene | ENSG00000066923 |
| Ensembl biotype | protein_coding |
| OMIM | 608489 |
| Entrez | 10734 |
Gene structure
Transcript identifiers
Ensembl transcripts: 22 — 12 protein_coding, 6 retained_intron, 3 protein_coding_CDS_not_defined, 1 nonsense_mediated_decay
ENST00000317296, ENST00000394018, ENST00000412190, ENST00000416412, ENST00000422690, ENST00000426455, ENST00000439782, ENST00000440830, ENST00000459699, ENST00000476057, ENST00000477469, ENST00000479359, ENST00000482546, ENST00000491498, ENST00000492674, ENST00000496157, ENST00000615138, ENST00000620100, ENST00000938222, ENST00000938223, ENST00000938224, ENST00000938225
RefSeq mRNA: 5 — MANE Select: NM_001282717
NM_001282716, NM_001282717, NM_001282718, NM_001375438, NM_012447
CCDS: CCDS34703, CCDS64730, CCDS75642
Canonical transcript exons
ENST00000615138 — 34 exons
| Exon | Start | End |
|---|---|---|
| ENSE00002447250 | 100188453 | 100188529 |
| ENSE00002515660 | 100188812 | 100189016 |
| ENSE00003459341 | 100204021 | 100204122 |
| ENSE00003473328 | 100200453 | 100200542 |
| ENSE00003487563 | 100180493 | 100180672 |
| ENSE00003487572 | 100200236 | 100200328 |
| ENSE00003502204 | 100186200 | 100186296 |
| ENSE00003504459 | 100211435 | 100211539 |
| ENSE00003526533 | 100199262 | 100199367 |
| ENSE00003536381 | 100199541 | 100199644 |
| ENSE00003545047 | 100211011 | 100211185 |
| ENSE00003549626 | 100189445 | 100189596 |
| ENSE00003549959 | 100198087 | 100198166 |
| ENSE00003550551 | 100213735 | 100213806 |
| ENSE00003571175 | 100214007 | 100214381 |
| ENSE00003578480 | 100198843 | 100198957 |
| ENSE00003582733 | 100201786 | 100201866 |
| ENSE00003583172 | 100202172 | 100202340 |
| ENSE00003583240 | 100204627 | 100204775 |
| ENSE00003595812 | 100195309 | 100195382 |
| ENSE00003596509 | 100201090 | 100201160 |
| ENSE00003599227 | 100205005 | 100205133 |
| ENSE00003602324 | 100197156 | 100197279 |
| ENSE00003613619 | 100202454 | 100202590 |
| ENSE00003623491 | 100182090 | 100182192 |
| ENSE00003627024 | 100198475 | 100198582 |
| ENSE00003643277 | 100197778 | 100197876 |
| ENSE00003645949 | 100200769 | 100200969 |
| ENSE00003675174 | 100201949 | 100202041 |
| ENSE00003676077 | 100205227 | 100205384 |
| ENSE00003692400 | 100201264 | 100201351 |
| ENSE00003693953 | 100211795 | 100211876 |
| ENSE00003743363 | 100177918 | 100178005 |
| ENSE00003786173 | 100182723 | 100182839 |
Expression profiles
Bgee: expression breadth ubiquitous, 185 present calls, max score 98.94.
FANTOM5 (CAGE): breadth broad, TPM avg 1.4389 / max 243.1348, expressed in 298 samples.
FANTOM5 promoters (7 alternative TSS)
| Promoter ID | TPM avg | Samples expressed |
|---|---|---|
| 79937 | 0.8068 | 110 |
| 79941 | 0.2350 | 95 |
| 79943 | 0.2331 | 54 |
| 79940 | 0.0922 | 40 |
| 79936 | 0.0508 | 21 |
| 79938 | 0.0129 | 7 |
| 79939 | 0.0081 | 2 |
Top tissues by expression
281 total, by Bgee expression score (0-100, higher = more expressed):
| Tissue | Anatomy ID | Expression score | Quality |
|---|---|---|---|
| oocyte | CL:0000023 | 98.94 | gold quality |
| right testis | UBERON:0004534 | 98.53 | gold quality |
| left testis | UBERON:0004533 | 98.42 | gold quality |
| secondary oocyte | CL:0000655 | 96.32 | gold quality |
| testis | UBERON:0000473 | 95.63 | gold quality |
| right uterine tube | UBERON:0001302 | 95.53 | gold quality |
| right hemisphere of cerebellum | UBERON:0014890 | 95.24 | gold quality |
| cerebellar hemisphere | UBERON:0002245 | 94.71 | gold quality |
| cerebellar cortex | UBERON:0002129 | 94.53 | gold quality |
| C1 segment of cervical spinal cord | UBERON:0006469 | 93.33 | gold quality |
| primordial germ cell in gonad | CL:0000670 ∩ UBERON:0000991 | 92.71 | gold quality |
| gastrocnemius | UBERON:0001388 | 91.76 | gold quality |
| body of pancreas | UBERON:0001150 | 91.25 | gold quality |
| muscle of leg | UBERON:0001383 | 91.17 | gold quality |
| cerebellum | UBERON:0002037 | 90.81 | gold quality |
| adenohypophysis | UBERON:0002196 | 90.81 | gold quality |
| cortical plate | UBERON:0005343 | 90.22 | gold quality |
| spleen | UBERON:0002106 | 90.05 | gold quality |
| right frontal lobe | UBERON:0002810 | 90.00 | gold quality |
| hindlimb stylopod muscle | UBERON:0004252 | 89.64 | gold quality |
| spinal cord | UBERON:0002240 | 89.33 | gold quality |
| left ovary | UBERON:0002119 | 89.21 | gold quality |
| lymph node | UBERON:0000029 | 88.99 | gold quality |
| sural nerve | UBERON:0015488 | 88.81 | gold quality |
| pituitary gland | UBERON:0000007 | 88.73 | gold quality |
| right ovary | UBERON:0002118 | 88.42 | gold quality |
| male germ line stem cell (sensu Vertebrata) in testis | CL:0000089 ∩ UBERON:0000473 | 87.97 | gold quality |
| tibial nerve | UBERON:0001323 | 87.97 | gold quality |
| ganglionic eminence | UBERON:0004023 | 87.94 | gold quality |
| anterior cingulate cortex | UBERON:0009835 | 87.37 | gold quality |
Single-cell (SCXA)
Detected in 8 experiment(s), a significant marker in 4.
| Experiment | Marker? | Max mean expression |
|---|---|---|
| E-MTAB-8381 | yes | 1037.37 |
| E-MTAB-6701 | yes | 98.43 |
| E-HCAD-10 | yes | 23.65 |
| E-ANND-3 | yes | 18.66 |
| E-CURD-11 | no | 187.38 |
| E-MTAB-6386 | no | 72.01 |
| E-CURD-120 | no | 8.18 |
| E-CURD-112 | no | 3.96 |
Regulation
Is transcription factor: no
Upstream regulators (CollecTRI, top): E2F6, EZH2
miRNA regulators (miRDB)
25 targeting STAG3, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):
| miRNA | Max score | Avg score | miRNA target_count |
|---|---|---|---|
| HSA-MIR-4500 | 99.99 | 72.72 | 2367 |
| HSA-LET-7A-5P | 99.98 | 72.29 | 1790 |
| HSA-LET-7B-5P | 99.98 | 72.31 | 1790 |
| HSA-LET-7C-5P | 99.98 | 72.29 | 1790 |
| HSA-LET-7E-5P | 99.98 | 72.29 | 1790 |
| HSA-LET-7F-5P | 99.98 | 72.56 | 1784 |
| HSA-LET-7G-5P | 99.98 | 72.37 | 1784 |
| HSA-LET-7I-5P | 99.98 | 72.37 | 1788 |
| HSA-MIR-98-5P | 99.98 | 72.33 | 1787 |
| HSA-MIR-4458 | 99.96 | 71.64 | 1650 |
| HSA-LET-7D-5P | 99.96 | 71.76 | 1632 |
| HSA-MIR-1321 | 99.84 | 65.30 | 1811 |
| HSA-MIR-4739 | 99.84 | 65.25 | 1832 |
| HSA-MIR-4756-5P | 99.84 | 64.98 | 1809 |
| HSA-MIR-1197 | 99.70 | 67.75 | 1027 |
| HSA-MIR-4251 | 99.40 | 69.19 | 3363 |
| HSA-MIR-4478 | 99.07 | 65.16 | 2320 |
| HSA-MIR-5587-5P | 99.07 | 68.58 | 838 |
| HSA-MIR-3929 | 98.32 | 65.58 | 1026 |
| HSA-MIR-6826-3P | 98.19 | 66.32 | 1153 |
| HSA-MIR-665 | 97.60 | 65.64 | 1781 |
| HSA-MIR-526B-5P | 97.41 | 67.99 | 1074 |
| HSA-MIR-6772-3P | 97.04 | 65.89 | 784 |
| HSA-MIR-3162-5P | 95.67 | 67.53 | 794 |
| HSA-MIR-5708 | 90.54 | 64.01 | 66 |
Literature-anchored findings (GeneRIF, showing 21)
- identified as one of five genes containing 11 somatic mutations in a panel that included 132 colorectal cancers, then demonstrated that down-regulation of such homologs resulted in chromosomal instability and chromatid cohesion defects in human cells (PMID:18299561)
- plays a role in regulation of transcription due to genetic imprinting, sister chromatid exchange, chromosome segregation and as an insulator element. (review) (PMID:18788457)
- we show evidence for the involvement of a common allele of STAG3 in the development of epithelial ovarian cancer (PMID:20635389)
- We identified a homozygous 1-bp deletion inducing a frameshift mutation in STAG3 on chromosome 7. Female mice devoid of Stag3 are sterile. (PMID:24597867)
- STAG3 truncating variant as the cause of primary ovarian insufficiency has been found in two sisters in a consanguineous Lebanese family. (PMID:26059840)
- Loss of STAG2 or STAG3, which encode subunits of the cohesin complex, in melanoma cells results in resistance to BRAF inhibitors (BRAFi). Loss-of-function mutations in STAG2, as well as decreased expression of STAG2 or STAG3 proteins were found in several tumor samples from patients with acquired resistance to BRAFi and in BRAFi-resistant melanoma cell lines. (PMID:27500726)
- RT-PCR revealed that the mutation causes loss of wild-type donor splice-site which leads to aberrant splicing of STAG3 mRNA and consecutive formation of STAG3 alternative transcript (p.Leu490Thrfs*10) . This is the first report of splice-site mutation of STAG3 gene causes POI in 2 Han Chinese patients. (PMID:28393351)
- c.677C > G associated with primary ovarian insufficiency (PMID:28802712)
- Rec8-Stag3 cohesin is shown to be susceptible to Wapl-dependent ring opening and sororin-mediated protection. (PMID:29724914)
- The association of stromal antigen 3 (STAG3) sequence variations with spermatogenic impairment in the male Korean population. (PMID:31115363)
- For the first time, study reports biallelic variants in STAG3, in one sporadic patient, and a homozygous RNF212 variant, in the two brothers, as the genetic cause of non-obstructive azoospermia. Meiotic studies allowed the detection of the functional consequences of the mutations and provided information on the role of STAG3 and RNF212 in human male meiosis. (PMID:31125047)
- This is the first report of STAG3 mutations in a Caucasian family with primary ovarian insufficiency. (PMID:31363903)
- Mutations in the stromal antigen 3 (STAG3) gene cause male infertility due to meiotic arrest. (PMID:31682730)
- STAG3 homozygous missense variant causes primary ovarian insufficiency and male non-obstructive azoospermia. (PMID:32634216)
- The meiosis-specific cohesin component stromal antigen 3 promotes cell migration and chemotherapeutic resistance in colorectal cancer. (PMID:33039558)
- Analysis of STAG3 variants in Chinese non-obstructive azoospermia patients with germ cell maturation arrest. (PMID:33980954)
- Biallelic loss of function variants in STAG3 result in primary ovarian insufficiency. (PMID:34497033)
- A Long Contiguous Stretch of Homozygosity Disclosed a Novel STAG3 Biallelic Pathogenic Variant Causing Primary Ovarian Insufficiency: A Case Report and Review of the Literature. (PMID:34828315)
- New STAG3 gene variant as a cause of premature ovarian insufficiency", trans “Nueva variante del gen STAG3 causante de insuficiencia ovarica prematura (PMID:35503298)
- The upregulation of stromal antigen 3 expression suppresses the phenotypic hallmarks of hepatocellular carcinoma through the Smad3-CDK4/CDK6-cyclin D1 and CXCR4/RhoA pathways. (PMID:35941537)
- METTL3/IGF2BP2 axis affects the progression of colorectal cancer by regulating m6A modification of STAG3. (PMID:37828232)
Cross-species orthologs
5 orthologs
| Organism | Symbol | Gene ID |
|---|---|---|
| danio_rerio | stag3 | ENSDARG00000104388 |
| mus_musculus | Stag3 | ENSMUSG00000036928 |
| rattus_norvegicus | Stag3 | ENSRNOG00000001360 |
| drosophila_melanogaster | SA2 | FBGN0043865 |
| caenorhabditis_elegans | WBGENE00004738 |
Paralogs (2): STAG2 (ENSG00000101972), STAG1 (ENSG00000118007)
Protein
Protein identifiers
Cohesin subunit SA-3 — Q9UJ98 (reviewed: Q9UJ98)
Alternative names: SCC3 homolog 3, Stromal antigen 3, Stromalin-3
All UniProt accessions (6): Q9UJ98, C9J3T3, C9JTG4, C9JYW5, D6W5U7, H7C0H6
UniProt curated annotations — full annotation on UniProt →
Function. Meiosis specific component of cohesin complex. The cohesin complex is required for the cohesion of sister chromatids after DNA replication. The cohesin complex apparently forms a large proteinaceous ring within which sister chromatids can be trapped. At anaphase, the complex is cleaved and dissociates from chromatin, allowing sister chromatids to segregate. The meiosis-specific cohesin complex probably replaces mitosis specific cohesin complex when it dissociates from chromatin during prophase I.
Subunit / interactions. Component of the meiosis-specific cohesin complex, which also contains the SMC1 (SMC1A or SMC1B) and SMC3 heterodimer. Such complex likely contains RAD21, or the meiosis-specific related protein REC8. Interacts with CCDC79/TERB1; recruiting cohesin to telomeres to develop structural rigidity.
Subcellular location. Nucleus. Chromosome. Centromere.
Tissue specificity. Testis specific.
Post-translational modifications. Phosphorylated.
Disease relevance. Premature ovarian failure 8 (POF8) [MIM:615723] An ovarian disorder defined as the cessation of ovarian function under the age of 40 years. It is characterized by oligomenorrhea or amenorrhea, in the presence of elevated levels of serum gonadotropins and low estradiol. The disease is caused by variants affecting the gene represented in this entry. A homozygous deletion in STAG3 predicted to result in frameshift and premature truncation, has been shown to be the cause of premature ovarian failure in a large consanguineous family. Spermatogenic failure 61 (SPGF61) [MIM:619672] An autosomal recessive male infertility disorder characterized by non-obstructive azoospermia, due to complete meiotic arrest at the primary spermatocyte stage. The disease is caused by variants affecting the gene represented in this entry.
Similarity. Belongs to the SCC3 family.
Isoforms (3)
| UniProt ID | Names | Canonical? |
|---|---|---|
| Q9UJ98-1 | 1 | yes |
| Q9UJ98-2 | 2 | |
| Q9UJ98-3 | 3 |
RefSeq proteins (5): NP_001269645, NP_001269646, NP_001269647, NP_001362367, NP_036579 (=MANE)
Domains & families (InterPro)
| ID | Name | Type |
|---|---|---|
| IPR013721 | STAG | Domain |
| IPR016024 | ARM-type_fold | Homologous_superfamily |
| IPR020839 | SCD | Domain |
| IPR039662 | Cohesin_Scc3/SA | Family |
| IPR056396 | HEAT_SCC3-SA | Domain |
Pfam: PF08514, PF21581, PF24571
UniProt features (36 total): sequence conflict 12, compositionally biased region 9, sequence variant 5, region of interest 4, splice variant 3, chain 1, domain 1, modified residue 1
Structure
Experimental structures (PDB)
0 structures.
Predicted structure (AlphaFold)
| Model | pLDDT | Fraction very-high |
|---|---|---|
| AF-Q9UJ98-F1 | 78.46 | 0.59 |
Functional residue map
Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.
Post-translational modifications (1): 1203
Function
Pathways and Gene Ontology
Reactome pathways
4 pathways
| ID | Pathway |
|---|---|
| R-HSA-1221632 | Meiotic synapsis |
| R-HSA-1474165 | Reproduction |
| R-HSA-1500620 | Meiosis |
| R-HSA-1640170 | Cell Cycle |
MSigDB gene sets: 205 (showing top):
GOBP_MEIOTIC_CHROMOSOME_SEGREGATION, GOBP_CHROMOSOME_ORGANIZATION, MODULE_169, REACTOME_MEIOTIC_SYNAPSIS, GGGTGGRR_PAX4_03, GOBP_SYNAPTONEMAL_COMPLEX_ORGANIZATION, GOBP_ORGANELLE_FISSION, KIM_RESPONSE_TO_TSA_AND_DECITABINE_UP, HUTTMANN_B_CLL_POOR_SURVIVAL_DN, MODULE_171, GOBP_SISTER_CHROMATID_COHESION, GOBP_CHROMOSOME_ORGANIZATION_INVOLVED_IN_MEIOTIC_CELL_CYCLE, GOBP_HOMOLOGOUS_CHROMOSOME_SEGREGATION, GOBP_MEIOTIC_CELL_CYCLE_PROCESS, CTGYNNCTYTAA_UNKNOWN
GO Biological Process (8): sister chromatid cohesion (GO:0007062), synaptonemal complex assembly (GO:0007130), establishment of meiotic sister chromatid cohesion (GO:0034089), chromosome segregation (GO:0007059), homologous chromosome pairing at meiosis (GO:0007129), protein localization to chromosome (GO:0034502), cell division (GO:0051301), meiotic cell cycle (GO:0051321)
GO Molecular Function (1): chromatin binding (GO:0003682)
GO Cellular Component (14): chromosome, centromeric region (GO:0000775), chromatin (GO:0000785), synaptonemal complex (GO:0000795), obsolete extracellular space (GO:0005615), nucleus (GO:0005634), nucleoplasm (GO:0005654), nucleolus (GO:0005730), meiotic cohesin complex (GO:0030893), condensed nuclear chromosome (GO:0000794), lateral element (GO:0000800), transverse filament (GO:0000802), male germ cell nucleus (GO:0001673), chromosome (GO:0005694), cohesin complex (GO:0008278)
Reactome top-level categories
Rollup of top-3 pathways:
| Category | Pathways |
|---|---|
| Meiosis | 1 |
| Reproduction | 1 |
| Cell Cycle | 1 |
GO top-level categories
Rollup of top GO terms by namespace:
| Category | Terms |
|---|---|
| cellular anatomical structure | 4 |
| cell cycle process | 2 |
| chromosome organization involved in meiotic cell cycle | 2 |
| chromosome | 2 |
| nuclear lumen | 2 |
| intracellular membraneless organelle | 2 |
| synaptonemal complex | 2 |
| chromosome organization | 1 |
| homologous chromosome pairing at meiosis | 1 |
| cellular component assembly | 1 |
| synaptonemal complex organization | 1 |
| establishment of sister chromatid cohesion | 1 |
| meiotic sister chromatid cohesion | 1 |
| homologous chromosome segregation | 1 |
| protein localization to organelle | 1 |
| cellular process | 1 |
| cell cycle | 1 |
| sexual reproduction | 1 |
| reproductive process | 1 |
| meiotic nuclear division | 1 |
| binding | 1 |
| chromosomal region | 1 |
| synaptonemal structure | 1 |
| intracellular membrane-bounded organelle | 1 |
| cohesin complex | 1 |
| nuclear chromosome | 1 |
| condensed chromosome | 1 |
| nucleus | 1 |
| germ cell nucleus | 1 |
| protein-containing complex | 1 |
Protein interactions and networks
STRING
1210 interactions, top by confidence (×1000):
| Protein A | Protein B | Partner UniProt | Score |
|---|---|---|---|
| STAG3 | SMC1B | Q8NDV3 | 998 |
| STAG3 | REC8 | O95072 | 998 |
| STAG3 | RAD21L1 | Q9H4I0 | 997 |
| STAG3 | SMC3 | Q9UQE7 | 996 |
| STAG3 | SMC1A | Q14683 | 991 |
| STAG3 | RAD21 | O60216 | 988 |
| STAG3 | SYCP3 | Q8IZU3 | 834 |
| STAG3 | SYCE1 | Q8N0S2 | 828 |
| STAG3 | HORMAD1 | Q86X24 | 751 |
| STAG3 | PDS5A | Q29RF7 | 733 |
| STAG3 | SPO11 | Q9Y5K1 | 717 |
| STAG3 | SYCP2 | Q9BX26 | 716 |
| STAG3 | SYCE2 | Q6PIF2 | 710 |
| STAG3 | SYCP1 | Q15431 | 698 |
| STAG3 | HORMAD2 | Q8N7B1 | 691 |
IntAct
3 interactions, top by confidence:
| A | B | Type | Score |
|---|---|---|---|
| KLHL22 | TRAV18 | psi-mi:“MI:0914”(association) | 0.350 |
| yopM | STAG3 | psi-mi:“MI:0915”(physical association) | 0.000 |
BioGRID (19): STAG3 (Affinity Capture-MS), STAG3 (Affinity Capture-MS), STAG3 (Affinity Capture-MS), STAG3 (Affinity Capture-MS), STAG3 (Affinity Capture-MS), STAG3 (Affinity Capture-MS), STAG3 (Affinity Capture-MS), STAG3 (Affinity Capture-MS), STAG3 (Affinity Capture-MS), STAG3 (Affinity Capture-MS), STAG3 (Affinity Capture-MS), SMC1A (Affinity Capture-Western), SMC3 (Affinity Capture-Western), STAG3 (Negative Genetic), STAG3 (Negative Genetic)
ESM2 similar proteins: A0A1D5PJB7, A0A1L8HX76, A6QR40, O08764, O60294, O95382, P10938, P70218, P97452, Q12851, Q14137, Q15334, Q16586, Q28686, Q32P44, Q3TJ91, Q499N3, Q499U2, Q4KLI9, Q561R2, Q562C2, Q5RBH8, Q5RCX2, Q61161, Q6AY79, Q6F5E8, Q6P1M3, Q6V7V2, Q7SZE3, Q7TMC8, Q80Y17, Q8BYZ7, Q8C3I8, Q8C6B2, Q8CHW4, Q8K4K5, Q8MKF0, Q8N0W3, Q8VC03, Q91WI7
Diamond homologs: O35638, O70576, P0CL83, P0CL84, P0CL85, Q19555, Q8N3U4, Q8TBR4, Q8WVM7, Q99M76, Q9D3E6, Q9DGN0, Q9DGN1, Q9UJ98, O13816, O82265
SIGNOR signaling
1 interactions.
| A | Effect | B | Mechanism |
|---|---|---|---|
| STAG3 | “form complex” | “RAD21L Cohesin complex” | binding |
Disease & clinical
Cancer significance
Clinical variants and AI predictions
ClinVar
264 variants total. Per-class counts are floors (≥ shown; pagination cap):
| Classification | Count (floor) |
|---|---|
| Pathogenic | 11 |
| Likely pathogenic | 13 |
| Uncertain significance | 142 |
| Likely benign | 29 |
| Benign | 31 |
Top pathogenic / likely-pathogenic (24)
| Variant ID | HGVS | Classification |
|---|---|---|
| 126427 | NM_001282717.2(STAG3):c.562del (p.Gln188fs) | Pathogenic |
| 1328922 | NM_001282717.2(STAG3):c.291dup (p.Asn98fs) | Pathogenic |
| 1328923 | NM_001282717.2(STAG3):c.1950C>A (p.Tyr650Ter) | Pathogenic |
| 1328924 | NM_001282717.2(STAG3):c.1936dup (p.Ala646fs) | Pathogenic |
| 1328925 | NM_001282717.2(STAG3):c.2394+1G>A | Pathogenic |
| 1328929 | NM_001282717.2(STAG3):c.3381_3384del (p.Glu1128fs) | Pathogenic |
| 224903 | NM_001282717.2(STAG3):c.1947_1948dup (p.Tyr650fs) | Pathogenic |
| 4293889 | NM_001282717.2(STAG3):c.2821C>T (p.Gln941Ter) | Pathogenic |
| 430588 | NM_001282717.2(STAG3):c.1573+5G>A | Pathogenic |
| 4813861 | NM_001282717.2(STAG3):c.2773del (p.Ser925fs) | Pathogenic |
| 929755 | NM_001282717.2(STAG3):c.1069C>T (p.Arg357Ter) | Pathogenic |
| 1048096 | NM_001282717.2(STAG3):c.1953_1955del (p.Leu652del) | Likely pathogenic |
| 1325148 | NM_001282717.2(STAG3):c.3106C>T (p.Gln1036Ter) | Likely pathogenic |
| 1709457 | NM_001282717.2(STAG3):c.3369_3381del (p.Glu1124fs) | Likely pathogenic |
| 1802231 | NM_001282717.2(STAG3):c.2221-1_2225delinsAC | Likely pathogenic |
| 2632675 | NM_001282717.2(STAG3):c.709del (p.Leu237fs) | Likely pathogenic |
| 3062323 | NM_001282717.2(STAG3):c.3550G>T (p.Glu1184Ter) | Likely pathogenic |
| 374000 | NM_001282717.2(STAG3):c.2776C>T (p.Arg926Ter) | Likely pathogenic |
| 4278477 | NM_001282717.2(STAG3):c.2291del (p.Asp764fs) | Likely pathogenic |
| 451295 | NM_001282717.2(STAG3):c.337-2A>C | Likely pathogenic |
| 451296 | NM_001282717.2(STAG3):c.1065+1G>C | Likely pathogenic |
| 617739 | NM_001282717.2(STAG3):c.1262T>G (p.Leu421Arg) | Likely pathogenic |
| 617740 | NM_001282717.2(STAG3):c.1312C>T (p.Arg438Ter) | Likely pathogenic |
| 869148 | NM_001282717.2(STAG3):c.1571del (p.Gln524fs) | Likely pathogenic |
SpliceAI
6099 predictions. Top by Δscore:
| Variant | Effect | Δscore |
|---|---|---|
| 7:100182088:A:AG | acceptor_gain | 1.0000 |
| 7:100182089:G:GG | acceptor_gain | 1.0000 |
| 7:100182089:GGA:G | acceptor_gain | 1.0000 |
| 7:100182089:GGAAT:G | acceptor_gain | 1.0000 |
| 7:100182188:CACCG:C | donor_gain | 1.0000 |
| 7:100182189:ACCG:A | donor_gain | 1.0000 |
| 7:100182190:CCG:C | donor_gain | 1.0000 |
| 7:100182190:CCGGT:C | donor_loss | 1.0000 |
| 7:100182191:CG:C | donor_gain | 1.0000 |
| 7:100182192:GG:G | donor_gain | 1.0000 |
| 7:100182193:G:GA | donor_loss | 1.0000 |
| 7:100182193:G:GG | donor_gain | 1.0000 |
| 7:100182696:T:G | acceptor_gain | 1.0000 |
| 7:100182713:T:G | acceptor_gain | 1.0000 |
| 7:100182714:A:AG | acceptor_gain | 1.0000 |
| 7:100182715:C:G | acceptor_gain | 1.0000 |
| 7:100182716:A:AG | acceptor_gain | 1.0000 |
| 7:100182717:T:G | acceptor_gain | 1.0000 |
| 7:100182719:TTA:T | acceptor_loss | 1.0000 |
| 7:100182720:TAGG:T | acceptor_loss | 1.0000 |
| 7:100182721:AGGT:A | acceptor_gain | 1.0000 |
| 7:100182722:G:GA | acceptor_loss | 1.0000 |
| 7:100182722:GGTG:G | acceptor_gain | 1.0000 |
| 7:100182838:AGG:A | donor_loss | 1.0000 |
| 7:100182839:GG:G | donor_loss | 1.0000 |
| 7:100182840:G:GA | donor_loss | 1.0000 |
| 7:100186198:A:AG | acceptor_gain | 1.0000 |
| 7:100186199:G:GC | acceptor_gain | 1.0000 |
| 7:100186199:GTCT:G | acceptor_gain | 1.0000 |
| 7:100186292:TAAAG:T | donor_loss | 1.0000 |
AlphaMissense
8073 scored. Top likely-pathogenic:
| Variant | Protein change | am_pathogenicity |
|---|---|---|
| 7:100197262:T:A | W350R | 1.000 |
| 7:100197262:T:C | W350R | 1.000 |
| 7:100197871:T:C | F387L | 1.000 |
| 7:100197873:C:A | F387L | 1.000 |
| 7:100197873:C:G | F387L | 1.000 |
| 7:100197250:A:G | K346E | 0.999 |
| 7:100197252:A:C | K346N | 0.999 |
| 7:100197252:A:T | K346N | 0.999 |
| 7:100197260:G:A | G349D | 0.999 |
| 7:100197264:G:C | W350C | 0.999 |
| 7:100197264:G:T | W350C | 0.999 |
| 7:100189004:A:C | S235R | 0.998 |
| 7:100189006:C:A | S235R | 0.998 |
| 7:100189006:C:G | S235R | 0.998 |
| 7:100197157:G:C | D315H | 0.998 |
| 7:100197175:C:A | R321S | 0.998 |
| 7:100197205:T:A | W331R | 0.998 |
| 7:100197205:T:C | W331R | 0.998 |
| 7:100197251:A:T | K346I | 0.998 |
| 7:100197253:T:C | Y347H | 0.998 |
| 7:100197263:G:C | W350S | 0.998 |
| 7:100197269:T:C | L352P | 0.998 |
| 7:100197275:A:T | D354V | 0.998 |
| 7:100197812:T:C | L367P | 0.998 |
| 7:100197859:T:C | F383L | 0.998 |
| 7:100197860:T:C | F383S | 0.998 |
| 7:100197861:C:A | F383L | 0.998 |
| 7:100197861:C:G | F383L | 0.998 |
| 7:100197872:T:C | F387S | 0.998 |
| 7:100204111:A:C | S931R | 0.998 |
dbSNP variants (sampled 300 via entrez): RS1000133510 (7:100178744 A>G), RS1000184339 (7:100183306 A>T), RS1000195303 (7:100176809 G>A,C,T), RS1000241826 (7:100211678 G>A), RS1000411143 (7:100215461 C>A,T), RS1000465183 (7:100215760 G>A), RS1000485949 (7:100179075 G>A), RS1000608811 (7:100219275 A>C,T), RS1000632331 (7:100219475 A>G,T), RS1000744582 (7:100214349 T>C), RS1000801490 (7:100214598 G>A), RS1000832308 (7:100196303 C>T), RS1000847043 (7:100212852 C>A,T), RS1000919604 (7:100181936 C>T), RS1001058578 (7:100206150 G>A)
Disease associations
OMIM: gene MIM:608489 | disease phenotypes: MIM:615723, MIM:619672, MIM:610532
GenCC curated gene-disease
| Disease | Classification | Inheritance |
|---|---|---|
| premature ovarian failure 8 | Strong | Autosomal recessive |
| spermatogenic failure 61 | Strong | Autosomal recessive |
Mondo (7): premature menopause (MONDO:0001119), premature ovarian failure 8 (MONDO:0014321), spermatogenic failure 61 (MONDO:0030507), ovarian disorder (MONDO:0005558), female infertility (MONDO:0021124), hypomyelinating leukodystrophy 5 (MONDO:0012514), primary ovarian failure (MONDO:0005387)
Orphanet (2): Hypomyelination-congenital cataract syndrome (Orphanet:85163), NON RARE IN EUROPE: Primary ovarian failure (Orphanet:619)
HPO phenotypes
18 total (18 of 18 shown, HPO-id order):
| HPO | Term |
|---|---|
| HP:0000007 | Autosomal recessive inheritance |
| HP:0000027 | Azoospermia |
| HP:0000118 | Phenotypic abnormality |
| HP:0000786 | Primary amenorrhea |
| HP:0000837 | Increased circulating gonadotropin level |
| HP:0003251 | Male infertility |
| HP:0008209 | Premature ovarian insufficiency |
| HP:0008214 | Decreased serum estradiol |
| HP:0008232 | Elevated circulating follicle stimulating hormone level |
| HP:0008669 | Abnormal spermatogenesis |
| HP:0008734 | Decreased testicular size |
| HP:0010464 | Streak ovary |
| HP:0011462 | Young adult onset |
| HP:0011961 | Non-obstructive azoospermia |
| HP:0011962 | Obstructive azoospermia |
| HP:0011969 | Elevated circulating luteinizing hormone level |
| HP:0031039 | Spermatocyte maturation arrest |
| HP:0100615 | Ovarian neoplasm |
GWAS associations
5 associations (top):
| Study | Trait | p-value |
|---|---|---|
| GCST002882_6 | Ticagrelor levels in individuals with acute coronary syndromes treated with ticagrelor | 9.000000e-10 |
| GCST007320_92 | Alzheimer’s disease or family history of Alzheimer’s disease | 3.000000e-08 |
| GCST010002_259 | Refractive error | 3.000000e-16 |
| GCST010702_48 | Subcortical volume (MOSTest) | 6.000000e-10 |
| GCST010703_289 | Brain morphology (MOSTest) | 6.000000e-15 |
EFO canonical traits (3, from GWAS)
| EFO ID | Trait name |
|---|---|
| EFO:0007007 | ticagrelor measurement |
| EFO:0009268 | family history of Alzheimer’s disease |
| EFO:0004346 | neuroimaging measurement |
MeSH disease descriptors (5)
| Descriptor | Name | Tree numbers |
|---|---|---|
| D007247 | Infertility, Female | C12.050.351.500.498; C12.100.250.498; C12.100.750.350 |
| D008594 | Menopause, Premature | C12.050.351.500.056.630.250; C12.100.250.056.630.250; G08.686.157.500.500; G08.686.841.249.500.500 |
| D010049 | Ovarian Diseases | C12.050.351.500.056.630; C12.100.250.056.630; C19.391.630 |
| D016649 | Primary Ovarian Insufficiency | C12.050.351.500.056.630.750; C12.100.250.056.630.750; C19.391.630.750 |
| C567166 | Leukodystrophy, Hypomyelinating, 5 (supp.) |
Drugs & pharmacology
Drug and pharmacology data
Is drug target: no
Clinical evidence (CIViC)
Drug × variant × indication: 1 predictive associations from 1 curated evidence items.
| Variant | Therapy | Indication | Effect | Level | CIViC |
|---|---|---|---|---|---|
| STAG3 Underexpression | Vemurafenib | Melanoma | Resistance | CIViC D | EID1660 |
PharmGKB: 1 entry (VIP=true, CPIC=false)
CTD chemical–gene interactions
23 total (human), top 23 by PubMed support.
| Chemical | Actions (top 5) | PubMed papers |
|---|---|---|
| Benzo(a)pyrene | affects methylation, increases expression, increases mutagenesis | 3 |
| Air Pollutants | increases abundance, increases expression | 2 |
| Tobacco Smoke Pollution | decreases expression, increases expression | 2 |
| Particulate Matter | increases expression, increases abundance | 2 |
| bisphenol A | decreases expression | 1 |
| ethyl-p-hydroxybenzoate | decreases expression | 1 |
| tris(1,3-dichloro-2-propyl)phosphate | decreases expression | 1 |
| perfluorooctanoic acid | increases expression | 1 |
| di-n-butylphosphoric acid | affects expression | 1 |
| CGP 52608 | affects binding, increases reaction | 1 |
| 4-(5-benzo(1,3)dioxol-5-yl-4-pyridin-2-yl-1H-imidazol-2-yl)benzamide | affects cotreatment, decreases expression | 1 |
| dorsomorphin | affects cotreatment, decreases expression | 1 |
| bisphenol S | affects cotreatment, decreases expression | 1 |
| Atrazine | increases expression | 1 |
| Cisplatin | increases expression | 1 |
| Dexamethasone | decreases expression, affects cotreatment | 1 |
| Indomethacin | affects cotreatment, decreases expression | 1 |
| Silicon Dioxide | increases expression | 1 |
| Valproic Acid | affects cotreatment, decreases expression | 1 |
| 1-Methyl-3-isobutylxanthine | affects cotreatment, decreases expression | 1 |
| Aflatoxin B1 | decreases expression | 1 |
| Asbestos, Serpentine | decreases expression | 1 |
| Cadmium Chloride | increases expression | 1 |
Clinical trials (associated diseases)
215 trials via MONDO — disease-level, not drug-specific.
| Trial | Phase | Status | Title |
|---|---|---|---|
| NCT00417066 | PHASE4 | COMPLETED | Flexible GnRH Antagonist vs Flare up GnRH Agonist Protocol in Poor Responders |
| NCT00732693 | PHASE4 | COMPLETED | Evaluation of Physiologic and Standard Sex Steroid Replacement Regimens in Women With Premature Ovarian Failure |
| NCT00837616 | PHASE4 | COMPLETED | Estrogen Dosing in Turner Syndrome: Pharmacology and Metabolism |
| NCT01853501 | PHASE4 | UNKNOWN | Effects of ADSC Therapy in Women With POF |
| NCT02783937 | PHASE4 | COMPLETED | Filgrastim for Premature Ovarian Insufficiency |
| NCT03535480 | PHASE4 | UNKNOWN | Autologous Bone Marrow Stem Cell Ovarian Transplantation to Restore Ovarian Function in Premature Ovarian Failure |
| NCT01577472 | PHASE4 | COMPLETED | Efficacy Study Comparing the Effect of Clomiphencitrate to an Antagonist Protocol |
| NCT01791751 | PHASE4 | COMPLETED | Impact of Clomiphene Citrate Administration During the Early Luteal Phase on Endocrine Profile in IVF Cycles |
| NCT02070198 | PHASE4 | UNKNOWN | Long Acting FSH Plus Antagonist Versus Daily FSH Plus Antagonist Versus Short Agonist Protocol in Poor Responders Undergoing IVF |
| NCT02328924 | PHASE4 | COMPLETED | There is a Value of Luteinizing Hormone Predictive of in Vitro Fertilization Treatment Outcome in Antagonist Protocols? |
| NCT03057574 | PHASE4 | UNKNOWN | Gonapure® in Multifollicular Stimulation in Egyptian Women Undergoing IVF/ICSI |
| NCT05197374 | PHASE4 | COMPLETED | Effect of Estradiol Pretreatment on Antagonist ICSI Cycles |
| NCT05281341 | PHASE4 | COMPLETED | Effect of GH Administration in Poor Responders Undergoing Intracytoplasmic Sperm Injection (ICSI) |
| NCT05286554 | PHASE4 | COMPLETED | Addition of Gonadotropin Releasing Hormone Agonist to Luteal Phase Support |
| NCT05608590 | PHASE4 | UNKNOWN | What is the Best Moment for Performing an HSG in Women With a Unfulfilled Childwish |
| NCT05753098 | PHASE4 | COMPLETED | Effect of Sildenafil Citrate Compared to Estrogen as Adjuvant Therapy for Unexplained Infertility |
| NCT06434233 | PHASE4 | RECRUITING | Opioid Use After Laparoscopic Salpingectomy |
| NCT06684951 | PHASE4 | COMPLETED | Effects of Intrauterine Flushing With Human Chorionic Gonadotropin on ICSI Outcome |
| NCT06921395 | PHASE4 | RECRUITING | Phase IV Study to Evaluate the Efficacy and Safety of Fang Le Shu Compared to Guo Na Fen for Controlled Ovarian Stimulation in Infertile Women Undergoing in Vitro Fertilization-embryo Transfer (IVF-ET). |
| NCT00140998 | PHASE3 | COMPLETED | Estrogen Treatment (Oral vs. Patches) in Turner Syndrome |
| NCT01462890 | PHASE3 | COMPLETED | Evaluation of Optimal Treatment Duration of Bevacizumab Combination With Standard Chemotherapy in Patients With Ovarian Cancer |
| NCT01850030 | PHASE3 | COMPLETED | A Multicenter Study Comparing the Efficacy, Safety and Tolerability of Oral Dydrogesterone 30 mg Daily Versus Intravaginal Micronized Progesterone Capsules 600 mg Daily for Luteal Support in In-Vitro Fertilization |
| NCT02175498 | PHASE3 | COMPLETED | Effectiveness of Homeopathic Treatment in Female Infertility |
| NCT02491437 | PHASE3 | COMPLETED | A Study Comparing the Efficacy, Safety and Tolerability of Oral Dydrogesterone 30 mg Daily Versus Crinone 8% Intravaginal Progesterone Gel 90 mg Daily for Luteal Support in In-Vitro Fertilization (LOTUS II) |
| NCT03429621 | PHASE3 | COMPLETED | Effect of Simethicone on Reducing Bowel Interference During Tubal Resection |
| NCT03542331 | PHASE3 | UNKNOWN | Endometrial Effects of Lipiodol |
| NCT03767569 | PHASE3 | UNKNOWN | Myo-inositol as Pretreatment in Hyperandrogenic PCOS Patients |
| NCT03862586 | PHASE3 | COMPLETED | NAC Effect on Hox Genes Expressions in RIF |
| NCT05266924 | PHASE3 | UNKNOWN | Recombinant Follicle-stimulating Hormone in Treatment for Infertility |
| NCT05460858 | PHASE3 | UNKNOWN | NAC Effect on Infertile Women With Endometrioma |
| NCT00001951 | PHASE2 | COMPLETED | Hormone Replacement in Young Women With Premature Ovarian Failure |
| NCT00370019 | PHASE2 | WITHDRAWN | Effects of an Estrogen Replacement Therapy Skin Patch on Ovulation in Women With Premature Ovarian Failure |
| NCT00429494 | PHASE2 | COMPLETED | GnRH Analogue for Ovarian Function Preservation in Hematopoietic Stem Cell Transplantation Patients |
| NCT03816852 | PHASE2 | SUSPENDED | The Safety and Efficiency Study of Mesenchymal Stem Cell (19#iSCLife®-POI) in Premature Ovarian Insufficiency |
| NCT04536467 | PHASE2 | UNKNOWN | Prevention of Chemotherapy-Induced Ovarian Failure With Goserelin in Premenopausal Lymphoma Patients |
| NCT06117982 | PHASE2 | COMPLETED | The Impact of Granulocyte Colony Stimulating Factor on Premature Ovarian Insufficiency |
| NCT00050414 | PHASE2 | COMPLETED | A Study of Trabectedin in Patients With Advanced Ovarian Cancer |
| NCT01310647 | PHASE2 | COMPLETED | Antral Follicle Priming Prior to ICSI (Intracytoplasmic Sperm Injection) in Previously Diagnosed Low Responders |
| NCT01460979 | PHASE2 | COMPLETED | Efficacy,Tolerability,Safety of Temsirolimus in Women With Platinum-refractory Ovarian Carcinoma or Advanced Endometrial Carcinoma |
| NCT03562897 | PHASE2 | COMPLETED | Evaluation of Ocoxin-Viusid® in Advanced or Metastatic Ovarian Epithelial Cancer |
Related Atlas pages
- Associated diseases: premature ovarian failure 8, spermatogenic failure 61, melanoma
- Biomarker drugs (CIViC) (drugs whose response is associated with variants in this gene — CIViC predictive evidence, not targeting): Vemurafenib
- Disease cohort memberships (association, not causation — diseases whose associated-gene cohort lists this gene; a subset are also under Associated diseases): Alzheimer disease, female infertility, hypomyelinating leukodystrophy 5, melanoma, ovarian disorder, premature menopause, premature ovarian failure 8, primary ovarian failure, spermatogenic failure 61