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GeneE
10 sources retrieved Β· Most recent: April 2026 Β· Index updated 15 days ago
β“˜GeneE is for informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment.
KCNJ16
potassium inwardly rectifying channel subfamily J member 16
Chromosome 17 Β· 17q24.3
NCBI Gene: 3773Ensembl: ENSG00000153822.16HGNC: HGNC:6262UniProt: A8K434
36PubMed Papers
21Diseases
0Drugs
13Pathogenic Variants
FUNCTIONAL ROLE
Ion ChannelTransporter
CLINICAL
OMIM Disease Gene
DATA QUALITY
βœ“ Experimental GO Evidenceβœ“ Swiss-Prot Reviewed
inward rectifier potassium channel activitypotassium ion transmembrane transportbasolateral plasma membraneplasma membranehypokalemic tubulopathy and deafnessAbnormality of the skeletal systemfacial morphologySjogren syndrome
✦AI Summary

KCNJ16 encodes Kir5.1, an inwardly rectifying potassium channel that plays a critical role in renal electrolyte homeostasis and acid-base balance. The channel functions as a heteromeric complex with Kir4.1 (KCNJ10) at the basolateral membrane of distal kidney tubules, mediating potassium recycling essential for sodium reabsorption 1. Loss-of-function mutations in KCNJ16 cause hypokalemic tubulopathy and deafness (HKTD), an autosomal recessive disorder characterized by hypokalemic metabolic acidosis, salt wasting, and sensorineural hearing loss 2. The channel's dysfunction disrupts voltage-dependent electrolyte transporters and leads to metabolic impairments including altered TCA cycle and lipid metabolism 3. Beyond the kidney, Kir5.1 is expressed in pancreas and thyroid, suggesting broader physiological roles 4. Animal models demonstrate that KCNJ16 deficiency causes seizure susceptibility, impaired ventilatory responses, and brainstem neuroinflammation 56. Clinically, HKTD patients face severe complications including cardiogenic shock and brain edema, emphasizing the need for early diagnosis 2. Therapeutic approaches using statins show promise in addressing metabolic dysfunction associated with KCNJ16 deficiency 3.

Sources cited
1
KCNJ16 functions with KCNJ10 in basolateral membrane potassium recycling for sodium reabsorption
PMID: 26654186
2
KCNJ16 mutations cause hypokalemic tubulopathy and deafness with severe complications
PMID: 37466410
3
KCNJ16 deficiency causes metabolic impairments and responds to statin treatment
PMID: 39183338
4
KCNJ16 is expressed in kidney, pancreas, and thyroid tissues
PMID: 11060447
5
KCNJ16 deficiency causes seizure susceptibility and ventilatory dysfunction
PMID: 35848616
6
KCNJ16 knockout rats show seizure-induced brainstem neuroinflammation
PMID: 39175614
Disease Associationsβ“˜21
hypokalemic tubulopathy and deafnessOpen Targets
0.70Strong
Abnormality of the skeletal systemOpen Targets
0.37Weak
facial morphologyOpen Targets
0.33Weak
Sjogren syndromeOpen Targets
0.31Weak
bipolar disorderOpen Targets
0.30Weak
poisoningOpen Targets
0.25Weak
SnoringOpen Targets
0.25Weak
ovarian dysfunctionOpen Targets
0.20Weak
breast diseaseOpen Targets
0.20Weak
epilepsyOpen Targets
0.20Weak
auditory system diseaseOpen Targets
0.18Weak
complicationOpen Targets
0.18Weak
medical procedureOpen Targets
0.17Weak
trauma complicationOpen Targets
0.17Weak
Breast hypertrophyOpen Targets
0.16Weak
Brugada syndrome 1Open Targets
0.12Weak
First degree atrioventricular blockOpen Targets
0.12Weak
Abruptio PlacentaeOpen Targets
0.08Suggestive
thyrotoxic periodic paralysisOpen Targets
0.06Suggestive
Varicose veinsOpen Targets
0.06Suggestive
Hypokalemic tubulopathy and deafnessUniProt
Pathogenic Variants13
NM_170741.4(KCNJ16):c.397_399dup (p.Gly133_Tyr134insGly)Pathogenic
KCNJ16-related disorder|Hypokalemic tubulopathy and deafness
β˜…β˜†β˜†β˜†2026β†’ Residue 133
NM_170741.4(KCNJ16):c.904C>T (p.Arg302Ter)Likely pathogenic
Hypokalemic tubulopathy and deafness
β˜…β˜†β˜†β˜†2024β†’ Residue 302
NM_170741.4(KCNJ16):c.255G>A (p.Trp85Ter)Pathogenic
Hypokalemic tubulopathy and deafness
β˜…β˜†β˜†β˜†2024β†’ Residue 85
NM_170741.4(KCNJ16):c.467T>G (p.Leu156Ter)Likely pathogenic
KCNJ16-related disorder
β˜…β˜†β˜†β˜†2023β†’ Residue 156
NM_170741.4(KCNJ16):c.409C>G (p.Arg137Gly)Likely pathogenic
not provided
β˜…β˜†β˜†β˜†2023β†’ Residue 137
NM_170741.4(KCNJ16):c.397G>T (p.Gly133Ter)Likely pathogenic
Hypokalemic tubulopathy and deafness
β˜…β˜†β˜†β˜†2022β†’ Residue 133
NM_170741.4(KCNJ16):c.12C>G (p.Tyr4Ter)Likely pathogenic
Hypokalemic tubulopathy and deafness
β˜…β˜†β˜†β˜†2022β†’ Residue 4
NM_170741.4(KCNJ16):c.395T>G (p.Ile132Arg)Pathogenic
Hypokalemic tubulopathy and deafness
β˜†β˜†β˜†β˜†2021β†’ Residue 132
NM_170741.4(KCNJ16):c.526C>T (p.Arg176Ter)Pathogenic
Hypokalemic tubulopathy and deafness
β˜†β˜†β˜†β˜†2021β†’ Residue 176
NM_170741.4(KCNJ16):c.404G>C (p.Gly135Ala)Pathogenic
Hypokalemic tubulopathy and deafness
β˜†β˜†β˜†β˜†2021β†’ Residue 135
NM_170741.4(KCNJ16):c.749C>T (p.Pro250Leu)Pathogenic
Hypokalemic tubulopathy and deafness
β˜†β˜†β˜†β˜†2021β†’ Residue 250
NM_170741.4(KCNJ16):c.409C>T (p.Arg137Cys)Pathogenic
Hypokalemic tubulopathy and deafness
β˜†β˜†β˜†β˜†2021β†’ Residue 137
NM_170741.4(KCNJ16):c.191C>T (p.Thr64Ile)Pathogenic
Hypokalemic tubulopathy and deafness
β˜†β˜†β˜†β˜†2021β†’ Residue 64
View on ClinVar β†—
Related Genes
GNB1Protein interaction100%KCNJ10Protein interaction81%KCNJ15Protein interaction77%DLG4Protein interaction75%KCNJ4Shared pathway67%KCNJ6Shared pathway67%
Tissue Expression6 tissues
Brain
100%
Liver
41%
Lung
4%
Heart
4%
Ovary
4%
Bone Marrow
1%
Gene Interaction Network
Click a node to explore
KCNJ16GNB1KCNJ10KCNJ15DLG4KCNJ4KCNJ6
PROTEIN STRUCTURE
Preparing viewer…
AlphaFoldAI-predicted Β· UniProt Q8N538
View on AlphaFold β†—
Constraintβ“˜
LOEUFβ“˜
1.16LoF Tolerant
pLIβ“˜
0.00Tolerant
Observed/Expected LoF0.80 [0.56–1.16]
RankingsWhere KCNJ16 stands among ~20K protein-coding genes
  • #10,804of 20,598
    Most Researched36
  • #2,628of 5,498
    Most Pathogenic Variants13
  • #12,078of 17,882
    Most Constrained (LOEUF)1.16
Genes detectedKCNJ16
Sources retrieved10 papers
Response timeβ€”
πŸ“„ Sources
10β–Ό
1
Novel KCNJ16 variants identified in a Chinese patient with hypokalemic metabolic acidosis.
PMID: 37466410
Mol Genet Genomic Med Β· 2023
1.00
2
The genetic spectrum of Gitelman(-like) syndromes.
PMID: 35894287
Curr Opin Nephrol Hypertens Β· 2022
0.90
3
KCNJ16-depleted kidney organoids recapitulate tubulopathy and lipid recovery upon statins treatment.
PMID: 39183338
Stem Cell Res Ther Β· 2024
0.80
4
Kir5.1 channels: potential role in epilepsy and seizure disorders.
PMID: 35848616
Am J Physiol Cell Physiol Β· 2022
0.70
5
The human inward rectifier K(+) channel subunit kir5.1 (KCNJ16) maps to chromosome 17q25 and is expressed in kidney and pancreas.
PMID: 11060447
Cytogenet Cell Genet Β· 2000
0.60