CNKSR3

Chr 6

CNKSR family member 3

Also known as: CNK3, CNK3/IPCEF1, MAGI1

NCBI Gene: 154043ENSG00000153721UniProt: Q6P9H4

Predicted to be involved in negative regulation of ERK1 and ERK2 cascade; negative regulation of peptidyl-serine phosphorylation; and positive regulation of sodium ion transport. Predicted to act upstream of or within positive regulation of sodium ion transmembrane transporter activity. Predicted to be located in apical plasma membrane and cytoplasm. [provided by Alliance of Genome Resources, Jul 2025]

108
ClinVar variants
26
Pathogenic / LP
0.03
pLI score
0
Active trials
Clinical Summary— CNKSR3
⚡
Population Constraint (gnomAD)
Constrained for loss-of-function variants (OE-LoF 0.28) despite low pLI — interpret in context.
📋
ClinVar Variants
26 Pathogenic / Likely Pathogenic· 78 VUS of 108 total submissions
Some data sources returned errors (1)

omim: Error: OMIM fetch failed: 429

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

gnomAD
Moderate LoF intolerance
LoF Constraint?LOEUF (Loss-of-function Observed/Expected Upper bound Fraction) is the upper bound of the 90% CI for LoF OE — the preferred gnomAD v4 metric. Lower = more intolerant to LoF. LOEUF < 0.35 = highly constrained.
0.49LOEUF
pLI 0.028
Z-score 3.74
OE 0.28 (0.17–0.49)
Moderately constrained

More LoF-intolerant than ~75% of genes

Missense Constraint?Missense Z-score: standard deviations fewer missense variants observed vs. expected. Z > 3.09 (p < 0.001) = gene does not tolerate missense variation. OE missense < 0.6 is also considered constrained.
0.59Z-score
OE missense 0.91 (0.83–1.00)
301 obs / 331.0 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?Shaded band = 90% confidence interval. Vertical tick = point estimate. Grey threshold line = gnomAD constraint cutoff for that variant class.
LoF OE?Ratio of observed to expected LoF variants. Upper CI bound (LOEUF) ≤ 0.35 = strong LoF constraint signal.0.28 (0.17–0.49)
0≤0.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.0.91 (0.83–1.00)
0≤0.61.4
Synonymous OE?Control metric — synonymous variants are largely neutral and expected near OE = 1.0. Significant deviation may indicate annotation issues.0.89
0≤1.21.6
LoF obs/exp: 9 / 31.8Missense obs/exp: 301 / 331.0Syn Z: 0.96

ClinVar Variant Classifications

108 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic23
Likely Pathogenic3
VUS78
Likely Benign2
Benign2
23
Pathogenic
3
Likely Pathogenic
78
VUS
2
Likely Benign
2
Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
23
0
23
Likely Pathogenic
0
0
3
0
3
VUS
0
72
5
1
78
Likely Benign
0
2
0
0
2
Benign
0
0
0
2
2
Total074313108

LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly

View in ClinVar →

Protein Context — Lollipop Plot

CNKSR3 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

OMIM — Genotype-Phenotype

OMIM

No OMIM entries found.

Clinical Literature
Landmark / reviewRecent case evidence
Key Publications
Landmark & review papers · by relevance
PubMed
Top 10 resultsSearch PubMed ↗
Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC
Top 5 resultsSearch Europe PMC ↗

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →

External Resources

Links to major genomics databases and tools