C18orf54

protein-coding

chromosome 18 open reading frame 54

Gene summary

Predicted to be located in extracellular region. [provided by Alliance of Genome Resources, Jun 2026]

MANE transcript

NM_001288980.2

Inheritance

—

ClinVar variants

U:4B:1

Top phenotype

—

gnomAD constraint

pLI —, LoF o/e 0.7

Max pathogenic AF

—

Genomic locus

chr18:54,357,906-54,385,218

External References & Databases

Transcript & Mutation Effects

hg38 • Region Span ~27.3 kb
Loading mutation effect viewer...

GenCC Phenotypes & Disease Associations

Curated gene-disease validity assertions and inheritance patterns

No GenCC data available for this gene.

ClinVar Associated Diseases & Phenotypes

Reported disease conditions connected to C18orf54 variants in ClinVar

1 Conditions Cataloged
not providedTotal: 1

ClinVar Variants & Pathogenicity by Type

Statistics based on transcript NM_001288980.2. Only rare variants are included.

We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.

Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.

EffectPLPVUSLBBSum
synonymous
1
clinvar
1
missense
3
clinvar
3
nonsense
0
start loss
0
frameshift
0
splice donor/acceptor (+/-2bp)
1
clinvar
1
Total004105
Loading ClinVar variants...

Transcript Catalog

Annotated transcript isoforms across RefSeq and Ensembl databases

Showing 4 of 33 transcripts
Transcript IDSourceProtein IDCoding ExonsMANE Status
NM_001288980.2RefSeqNP_001275909.17MANE Select
ENST00000620105.5EnsemblENSP00000477654.17MANE Select
NM_001288981.2RefSeqNP_001275910.17Standard
NM_001288982.2RefSeqNP_001275911.17Standard

gnomAD Constraint

Source: gnomAD

Gene type
protein_coding
Transcript type
protein_coding
Transcript
ENST00000300091
Coding exons
7
Length
27302
Individuals with no LoFs
125712
Homozygous LoFs
0
Heterozygous LoFs
22
Defined
125734
p
0.0000875
Z-ScoreObservedExpectedObserved/ExpectedMutation RateTotal Possible
Missense-0.5682181961.110.000009922461
Missense (PolyPhen)6253.7291.1539758
Synonymous0.3526770.80.9470.00000359679
Loss of Function1.111115.80.6987.44e-7227

Population LoF Frequency

PopulationCAFp-valueStatus
African0.000250.00025rare
Latino/Admixed American0.0000950.000087rare
Ashkenazi Jewish00.0absent
East Asian0.0000590.000054rare
Finnish0.0000470.000046rare
European (Non-Finnish)0.000110.00011rare
South Asian0.0000360.000033rare
Other00.0absent

dbNSFP Gene Annotations

Source: dbNSFP

Function
FUNCTION: Might play a role in cell proliferation. {ECO:0000250}.;

Recessive Scores

pRec
0.0786

Intolerance Scores

LoFtool
0.470
RVIS EVS
-0.07
RVIS percentile EVS
48.69

Essentials

Essential (CRISPR)
N
Essential (CRISPR2)
N
Essential (gene trap)
N

Gene Damage Prediction

AllRecessiveDominant
MendelianMediumMediumMedium
Primary ImmunodeficiencyMediumMediumMedium
CancerMediumMediumMedium
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