SLC12A8

gene
On this page

Also known as CCC9

Summary

SLC12A8 (solute carrier family 12 member 8, HGNC:15595) is a protein-coding gene on chromosome 3q21.2, encoding Solute carrier family 12 member 8 (A0AV02). Cation/chloride cotransporter that may play a role in the control of keratinocyte proliferation.

This gene is thought to be a candidate for psoriasis susceptibility. Several alternatively spliced transcript variants of this gene have been described, but the full-length nature of some of these variants has not been determined.

Source: NCBI Gene 84561 — RefSeq curated summary.

At a glance

  • GWAS associations: 17
  • Clinical variants (ClinVar): 160 total
  • MANE Select transcript: NM_024628

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:15595
Approved symbolSLC12A8
Namesolute carrier family 12 member 8
Location3q21.2
Locus typegene with protein product
StatusApproved
AliasesCCC9
Ensembl geneENSG00000221955
Ensembl biotypeprotein_coding
OMIM611316
Entrez84561

Gene structure

Transcript identifiers

Ensembl transcripts: 32 — 21 protein_coding, 8 protein_coding_CDS_not_defined, 2 retained_intron, 1 nonsense_mediated_decay

ENST00000393469, ENST00000430155, ENST00000461616, ENST00000462437, ENST00000465475, ENST00000465777, ENST00000469902, ENST00000473262, ENST00000479231, ENST00000479352, ENST00000479826, ENST00000481760, ENST00000483944, ENST00000485849, ENST00000485954, ENST00000495105, ENST00000895735, ENST00000895736, ENST00000895737, ENST00000895738, ENST00000895739, ENST00000895740, ENST00000931086, ENST00000931087, ENST00000931088, ENST00000931089, ENST00000931090, ENST00000931091, ENST00000931092, ENST00000931093, ENST00000931094, ENST00000931095

RefSeq mRNA: 2 — MANE Select: NM_024628 NM_001195483, NM_024628

CCDS: CCDS43143

Canonical transcript exons

ENST00000469902 — 14 exons

ExonStartEnd
ENSE00001515423125212700125212748
ENSE00001903729125082644125084052
ENSE00003499982125135669125135782
ENSE00003525270125190375125190521
ENSE00003545186125092101125092198
ENSE00003546662125211299125211394
ENSE00003549557125177743125177974
ENSE00003554076125107481125108126
ENSE00003555054125118769125118856
ENSE00003558175125088310125088370
ENSE00003577119125120599125120686
ENSE00003609659125110189125110335
ENSE00003617424125091439125091556
ENSE00003633999125187237125187428

Expression profiles

Bgee: expression breadth ubiquitous, 218 present calls, max score 92.60.

FANTOM5 (CAGE): breadth broad, TPM avg 2.6079 / max 131.6791, expressed in 604 samples.

FANTOM5 promoters (12 alternative TSS)

Promoter IDTPM avgSamples expressed
442881.0019299
442900.5983182
442870.3816156
442890.2531141
442760.096020
442860.065029
442850.051320
442770.050017
442840.042623
442780.03266

Top tissues by expression

280 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
right lobe of thyroid glandUBERON:000111992.60gold quality
thyroid glandUBERON:000204691.31gold quality
left lobe of thyroid glandUBERON:000112091.24gold quality
oocyteCL:000002388.35gold quality
parotid glandUBERON:000183188.02gold quality
periodontal ligamentUBERON:000826686.92gold quality
gall bladderUBERON:000211086.41gold quality
deciduaUBERON:000245086.02gold quality
secondary oocyteCL:000065584.28gold quality
body of pancreasUBERON:000115083.11gold quality
saliva-secreting glandUBERON:000104481.24gold quality
pancreatic ductal cellCL:000207981.02silver quality
pancreasUBERON:000126480.58gold quality
endothelial cellCL:000011580.26silver quality
minor salivary glandUBERON:000183080.18gold quality
choroid plexus epitheliumUBERON:000391180.13gold quality
primordial germ cell in gonadCL:0000670 ∩ UBERON:000099179.72silver quality
mouth mucosaUBERON:000372979.56gold quality
gingival epitheliumUBERON:000194979.38gold quality
gingivaUBERON:000182878.30gold quality
rectumUBERON:000105278.20gold quality
islet of LangerhansUBERON:000000677.70gold quality
middle temporal gyrusUBERON:000277177.59gold quality
buccal mucosa cellCL:000233677.53silver quality
male germ line stem cell (sensu Vertebrata) in testisCL:0000089 ∩ UBERON:000047377.44gold quality
palpebral conjunctivaUBERON:000181277.40gold quality
right lobe of liverUBERON:000111476.96gold quality
cervix squamous epitheliumUBERON:000692276.83gold quality
Brodmann (1909) area 23UBERON:001355475.93gold quality
stromal cell of endometriumCL:000225574.74gold quality

Single-cell (SCXA)

Detected in 2 experiment(s), a significant marker in 2.

ExperimentMarker?Max mean expression
E-MTAB-7249yes300.87
E-ANND-3yes6.27

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

76 targeting SLC12A8, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-4455100.0065.481587
HSA-MIR-3925-3P100.0069.951237
HSA-MIR-3613-3P100.0076.367965
HSA-MIR-5692A100.0074.406850
HSA-MIR-450A-1-3P100.0069.331837
HSA-MIR-3163100.0077.238605
HSA-LET-7A-3P100.0074.033932
HSA-LET-7B-3P100.0074.083913
HSA-LET-7F-1-3P100.0074.023928
HSA-MIR-98-3P100.0074.083907
HSA-MIR-340-5P100.0072.504437
HSA-MIR-371B-5P99.9975.344759
HSA-MIR-453199.9969.703181
HSA-MIR-548AW99.9972.573559
HSA-MIR-373-5P99.9875.364753
HSA-MIR-616-5P99.9875.584775
HSA-MIR-56899.9869.862084
HSA-MIR-4666A-3P99.9671.713434
HSA-LET-7C-3P99.9573.422862
HSA-MIR-6772-5P99.9467.01577
HSA-MIR-10523-5P99.9169.222038
HSA-MIR-219A-5P99.9173.36735
HSA-MIR-95-5P99.8972.173973
HSA-MIR-4782-3P99.8873.31735
HSA-MIR-6766-3P99.8873.38732
HSA-MIR-612499.8769.783551
HSA-MIR-5010-3P99.8370.602357
HSA-MIR-60999.8264.26505
HSA-MIR-374C-5P99.8072.062910
HSA-MIR-655-3P99.8072.192909

Literature-anchored findings (GeneRIF, showing 7)

  • Maps to 3q21. Associated with suseptibility to psoriasis (PMID:11863360)
  • SLC12A8 is a susceptibility locus for psoriasis vulgaris. (PMID:16297188)
  • Molecular characterization of a human cation-Cl- cotransporter (SLC12A8A, CCC9A) that promotes polyamine and amino acid transport. (PMID:19472210)
  • Review summarizes three human disorders that have been linked to the mutation/dysfunction of Na-Cl, Na-K-2Cl, and K-Cl cotransporters (Bartter’s, Gitleman’s, and Andermann’s syndromes). (PMID:23325410)
  • Solute carrier family 12 member 8 (SLC12A8) is a potential biomarker and related to tumor immune cell infiltration in bladder cancer. (PMID:34365894)
  • SLC12A8 mediates TKI resistance in EGFR-mutant lung cancer via PDK1/AKT axis. (PMID:37725242)
  • [SLC12A8 promotes proliferation, invasiveness, migration and epithelial-mesenchymal transition of bladder cancer cells by activating JAK/STAT singaling]. (PMID:37814877)

Cross-species orthologs

5 orthologs

OrganismSymbolGene ID
danio_rerioslc12a8ENSDARG00000074384
mus_musculusSlc12a8ENSMUSG00000035506
rattus_norvegicusSlc12a8ENSRNOG00000001792
drosophila_melanogasterCG12773FBGN0024365
caenorhabditis_elegansWBGENE00017350

Paralogs (8): SLC12A2 (ENSG00000064651), SLC12A3 (ENSG00000070915), SLC12A1 (ENSG00000074803), SLC12A7 (ENSG00000113504), SLC12A4 (ENSG00000124067), SLC12A5 (ENSG00000124140), SLC12A6 (ENSG00000140199), SLC12A9 (ENSG00000146828)

Protein

Protein identifiers

Solute carrier family 12 member 8A0AV02 (reviewed: A0AV02)

Alternative names: Cation-chloride cotransporter 9

All UniProt accessions (4): A0AV02, C9IZN2, H7C5B1, H7C5L2

UniProt curated annotations — full annotation on UniProt →

Function. Cation/chloride cotransporter that may play a role in the control of keratinocyte proliferation.

Subcellular location. Membrane.

Tissue specificity. Ubiquitous with very low level in normal skin.

Disease relevance. SLC12A8 has been identified as a possible susceptibility gene for psoriasis mapped to chromosome 3q21 (PSORS5).

Similarity. Belongs to the SLC12A transporter family.

Isoforms (5)

UniProt IDNamesCanonical?
A0AV02-11yes
A0AV02-22
A0AV02-33
A0AV02-44
A0AV02-55

RefSeq proteins (2): NP_001182412, NP_078904* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR004841AA-permease/SLC12A_domDomain
IPR004842SLC12A_famFamily

Pfam: PF00324

UniProt features (36 total): transmembrane region 13, sequence conflict 7, splice variant 6, sequence variant 5, region of interest 2, chain 1, compositionally biased region 1, glycosylation site 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-A0AV02-F168.500.22

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Glycosylation sites (1): 221

Function

Pathways and Gene Ontology

Reactome pathways

0 pathways

MSigDB gene sets: 173 (showing top): GOBP_POTASSIUM_ION_TRANSPORT, GOBP_POTASSIUM_ION_HOMEOSTASIS, GOBP_INORGANIC_ANION_TRANSPORT, CAGCTG_AP4_Q5, GGCNKCCATNK_UNKNOWN, BOHN_PRIMARY_IMMUNODEFICIENCY_SYNDROM_DN, GOBP_MONOATOMIC_CATION_TRANSPORT, GOBP_REGULATION_OF_ANATOMICAL_STRUCTURE_SIZE, GOBP_CHLORIDE_TRANSPORT, RUTELLA_RESPONSE_TO_CSF2RB_AND_IL4_UP, RIGGI_EWING_SARCOMA_PROGENITOR_DN, GOBP_MONOATOMIC_ANION_HOMEOSTASIS, GOBP_REGULATION_OF_CELL_SIZE, HELLER_HDAC_TARGETS_SILENCED_BY_METHYLATION_UP, GOBP_MONOATOMIC_ION_HOMEOSTASIS

GO Biological Process (8): cell volume homeostasis (GO:0006884), chloride ion homeostasis (GO:0055064), potassium ion homeostasis (GO:0055075), chloride transmembrane transport (GO:1902476), potassium ion import across plasma membrane (GO:1990573), monoatomic ion transport (GO:0006811), potassium ion transport (GO:0006813), transmembrane transport (GO:0055085)

GO Molecular Function (4): potassium:chloride symporter activity (GO:0015379), protein binding (GO:0005515), symporter activity (GO:0015293), chloride:monoatomic cation symporter activity (GO:0015377)

GO Cellular Component (1): membrane (GO:0016020)

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
inorganic ion homeostasis2
transport2
regulation of cell size1
cellular homeostasis1
monoatomic anion homeostasis1
monoatomic cation homeostasis1
chloride transport1
monoatomic anion transmembrane transport1
potassium ion transmembrane transport1
inorganic cation import across plasma membrane1
metal ion transport1
cellular process1
potassium ion transmembrane transporter activity1
chloride:monoatomic cation symporter activity1
binding1
secondary active transmembrane transporter activity1
chloride transmembrane transporter activity1
monoatomic anion:monoatomic cation symporter activity1
cellular anatomical structure1

Protein interactions and networks

STRING

860 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
SLC12A8CSTAP01040958
SLC12A8NMRK1Q9NWW6614
SLC12A8BST1Q10588605
SLC12A8NMNAT1Q9HAN9594
SLC12A8A0A2R8YFG2A0A2R8YFG2564
SLC12A8NAPRTQ6XQN6504
SLC12A8MTFR1LQ9H019486
SLC12A8NAMPTP43490461
SLC12A8TATDN2Q93075440
SLC12A8SLC25A51Q9H1U9422
SLC12A8CD38P28907413
SLC12A8SLC26A9Q7LBE3378
SLC12A8NMNAT2Q9BZQ4377
SLC12A8FBXL19Q6PCT2372
SLC12A8MUC13Q9H3R2357

IntAct

12 interactions, top by confidence:

ABTypeScore
SLC12A8PAX6psi-mi:“MI:0915”(physical association)0.560
SLC12A8SLC27A3psi-mi:“MI:0915”(physical association)0.400
SLC12A8E6psi-mi:“MI:0915”(physical association)0.370
CRY1IGKV2D-30psi-mi:“MI:0914”(association)0.350
SLC12A8NGEFpsi-mi:“MI:0914”(association)0.350
C5AR1SLC12A8psi-mi:“MI:0914”(association)0.350
FFAR1SLC12A8psi-mi:“MI:0914”(association)0.350
GPR182SLC12A8psi-mi:“MI:0914”(association)0.350
SLC12A8ATE1psi-mi:“MI:0914”(association)0.350
SLC12A8PAX6psi-mi:“MI:0915”(physical association)0.000

BioGRID (20): NGEF (Affinity Capture-MS), SLC12A8 (Two-hybrid), SLC12A8 (Two-hybrid), NGEF (Affinity Capture-MS), EPS8L2 (Affinity Capture-MS), SLC12A8 (Affinity Capture-MS), SLC27A3 (Affinity Capture-MS), SLC12A8 (Affinity Capture-MS), SLC12A8 (Affinity Capture-MS), SLC12A8 (Affinity Capture-MS), ACAA2 (Affinity Capture-MS), ANKRD27 (Affinity Capture-MS), ATE1 (Affinity Capture-MS), RFWD2 (Affinity Capture-MS), CPT1A (Affinity Capture-MS)

ESM2 similar proteins: A0A0G2K1Q8, A0AV02, A2A6C4, A5D7L5, A6QNW6, B1MTL0, B2RXE2, C1BKZ7, O18917, P04920, P0DX17, P13808, P16283, P23347, P23348, P35523, P35524, P48746, P48751, P58295, Q0P5V9, Q14940, Q15043, Q15477, Q3MJ16, Q504Y0, Q50L42, Q5FWH7, Q5RB85, Q5RD44, Q64347, Q6A4L1, Q6SJP2, Q761V0, Q8BXR1, Q8CJI3, Q8K0H7, Q8R420, Q8VI23, Q91WD2

Diamond homologs: A0A0G2KTI4, A0AV02, A2BFP5, P38329, P55011, P55012, P55013, P55014, P55015, P55016, P55017, P55018, P55019, P59158, Q13621, Q25479, Q6A4L1, Q8CJI3, Q8VI23, Q9BXP2, O60146, Q2UVJ5, Q657W3, Q66HR0, Q99MR3, Q0VGW6, Q28677, Q5RK27, Q63632, Q63633, Q6Z0E2, Q7YRU6, Q91V14, Q924N4, Q9H2X9, Q9JIS8, Q9UHW9, Q9UP95, Q9WVL3, Q9Y666

SIGNOR signaling

0 interactions.

Disease & clinical

Clinical variants and AI predictions

ClinVar

160 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance121
Likely benign8
Benign0

Top pathogenic / likely-pathogenic (0)

SpliceAI

2627 predictions. Top by Δscore:

VariantEffectΔscore
3:125084048:AGCTC:Aacceptor_gain1.0000
3:125084050:CTC:Cacceptor_gain1.0000
3:125084051:TC:Tacceptor_gain1.0000
3:125084052:CC:Cacceptor_gain1.0000
3:125091437:A:ACdonor_gain1.0000
3:125091438:C:CCdonor_gain1.0000
3:125092300:AG:Adonor_gain1.0000
3:125107476:CTCA:Cdonor_loss1.0000
3:125107477:TCA:Tdonor_loss1.0000
3:125107478:CA:Cdonor_loss1.0000
3:125107479:A:ACdonor_gain1.0000
3:125107479:A:ATdonor_loss1.0000
3:125107480:C:CCdonor_gain1.0000
3:125107480:CCTT:Cdonor_gain1.0000
3:125108122:CCCTT:Cacceptor_gain1.0000
3:125108123:CCTTC:Cacceptor_gain1.0000
3:125110183:ACTC:Adonor_loss1.0000
3:125110185:TCAC:Tdonor_loss1.0000
3:125110186:CACCC:Cdonor_loss1.0000
3:125110187:A:Cdonor_loss1.0000
3:125110187:AC:Adonor_gain1.0000
3:125110187:ACC:Adonor_gain1.0000
3:125110187:ACCC:Adonor_gain1.0000
3:125110188:CC:Cdonor_gain1.0000
3:125110188:CCC:Cdonor_gain1.0000
3:125110188:CCCC:Cdonor_gain1.0000
3:125110306:C:CTacceptor_gain1.0000
3:125110306:C:Tacceptor_gain1.0000
3:125118765:TCA:Tdonor_loss1.0000
3:125118766:CA:Cdonor_loss1.0000

AlphaMissense

4633 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
3:125120611:G:TA271D0.997
3:125120686:C:TG246E0.997
3:125135669:C:GG246R0.997
3:125135669:C:TG246R0.997
3:125110305:C:GG315R0.996
3:125190391:C:GR61T0.996
3:125190409:C:TG55E0.996
3:125190426:G:CC49W0.996
3:125108013:G:CF391L0.995
3:125108013:G:TF391L0.995
3:125108015:A:GF391L0.995
3:125108082:G:CS368R0.995
3:125108082:G:TS368R0.995
3:125108084:T:GS368R0.995
3:125190396:G:CF59L0.995
3:125190396:G:TF59L0.995
3:125190398:A:GF59L0.995
3:125190410:C:GG55R0.995
3:125190410:C:TG55R0.995
3:125110244:A:GL335P0.994
3:125110304:C:TG315D0.994
3:125120623:C:TG267D0.994
3:125135674:G:TA244D0.994
3:125190390:C:AR61S0.994
3:125190390:C:GR61S0.994
3:125190391:C:AR61M0.994
3:125190394:A:GL60P0.994
3:125190442:C:TG44D0.994
3:125120624:C:GG267R0.993
3:125120674:C:TG250D0.993

dbSNP variants (sampled 300 via entrez): RS1000002896 (3:125212560 T>TGA), RS1000008649 (3:125158146 G>A,T), RS1000020004 (3:125116182 C>A,G), RS1000021584 (3:125203151 A>G), RS1000022434 (3:125130003 G>T), RS1000035613 (3:125168589 G>A), RS1000078921 (3:125197048 A>C), RS1000082992 (3:125204443 C>A), RS1000124624 (3:125182693 G>A,C), RS1000143584 (3:125117506 G>A,T), RS1000149506 (3:125124760 G>A,C), RS1000155635 (3:125182911 C>T), RS1000208662 (3:125181266 C>T), RS1000251460 (3:125141560 G>A,T), RS1000254913 (3:125167515 G>A)

Disease associations

OMIM: gene MIM:611316 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

17 associations (top):

StudyTraitp-value
GCST002930_18Cobalt levels8.000000e-06
GCST003995_16Tonsillectomy3.000000e-11
GCST005014_117Tonsillectomy3.000000e-11
GCST008144_2Fasting plasma glucose8.000000e-06
GCST009379_258Type 2 diabetes1.000000e-09
GCST010118_26Type 2 diabetes1.000000e-08
GCST010699_74Brain morphology (min-P)2.000000e-18
GCST010701_2Cortical surface area (MOSTest)1.000000e-08
GCST010702_122Subcortical volume (MOSTest)3.000000e-09
GCST010703_283Brain morphology (MOSTest)3.000000e-15
GCST90002385_436High light scatter reticulocyte count2.000000e-12
GCST90002386_559High light scatter reticulocyte percentage of red cells6.000000e-12
GCST90002397_661Mean spheric corpuscular volume6.000000e-16
GCST90002405_24Reticulocyte count2.000000e-13
GCST90002406_44Reticulocyte fraction of red cells2.000000e-12
GCST90011898_149Alanine aminotransferase levels5.000000e-09
GCST90026413_15Severe insulin-deficient type 2 diabetes2.000000e-06

EFO canonical traits (3, from GWAS)

EFO IDTrait name
EFO:0007924tonsillectomy risk measurement
EFO:0004346neuroimaging measurement
EFO:0007986reticulocyte count

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

PharmGKB: 1 entry (VIP=true, CPIC=false)

PharmGKB clinical annotations

1 annotations.

VariantTypeLevelDrugsPhenotypes
rs651630Toxicity3Tumor necrosis factor alpha (TNF-alpha) inhibitorsPsoriasis

PharmGKB variants

1 variants.

VariantGenesLevelScore#Clin annotsDrugs
rs651630SLC12A832.501Tumor necrosis factor alpha (TNF-alpha) inhibitors

GtoPdb / IUPHAR curated pharmacology

(IUPHAR/BPS Guide to Pharmacology — expert-curated)

Target class: transporter — SLC12 family of cation-coupled chloride transporters

CTD chemical–gene interactions

44 total (human), top 30 by PubMed support.

ChemicalActions (top 5)PubMed papers
Valproic Acidaffects expression, decreases expression, increases expression4
bisphenol Aaffects cotreatment, decreases methylation, increases expression2
sodium arseniteincreases expression2
Benzo(a)pyreneaffects methylation, decreases expression, decreases methylation2
Cisplatinaffects cotreatment, increases expression, decreases expression2
Estradioldecreases expression, increases expression2
Cadmium Chlorideincreases expression, increases abundance2
aristolochic acid Idecreases expression1
GSK-J4decreases expression1
FR900359increases phosphorylation1
chloroacetaldehydeaffects expression1
lead acetateincreases expression1
sulforaphaneincreases expression1
manganese chlorideincreases abundance, increases expression1
potassium chromate(VI)increases expression1
2,3-bis(3’-hydroxybenzyl)butyrolactoneaffects cotreatment, decreases expression1
chromium hexavalent ionaffects expression1
CGP 52608affects binding, increases reaction1
entinostatincreases expression1
2,2’,4,4’,5-brominated diphenyl etherincreases expression1
ICG 001increases expression1
abrinedecreases expression1
jinfukangaffects cotreatment, increases expression1
(+)-JQ1 compounddecreases expression1
Temozolomidedecreases expression1
Sunitinibincreases expression1
Fulvestrantaffects cotreatment, decreases methylation1
Cidofoviraffects expression1
Acetaminophendecreases expression1
Cadmiumincreases abundance, increases expression1

Cellosaurus cell lines

2 cell lines: 2 cancer cell line

First 10 cell lines (id-ordered, not curated):

CellosaurusNameCategorySex
CVCL_D4HSHCT116-SLC12A8-KO-c4Cancer cell lineMale
CVCL_D4HTHCT116-SLC12A8-KO-c5Cancer cell lineMale

Clinical trials (associated diseases)

0 trials via MONDO — disease-level, not drug-specific.

No linked Atlas pages yet — the cross-entity mesh grows as the corpus expands.