KXD1

protein-coding

KxDL motif containing 1, the group of BLOC-1 related complex subunits

Gene summary

Involved in lysosome localization. Part of BORC complex. [provided by Alliance of Genome Resources, Jul 2025]

Previous symbols:
  • C19orf50

MANE transcript

NM_024069.4

Inheritance

—

ClinVar variants

U:30B:2

Top phenotype

—

gnomAD constraint

pLI —, LoF o/e 0.48

Max pathogenic AF

—

Genomic locus

chr19:18,557,762-18,569,387

External References & Databases

Transcript & Mutation Effects

hg38 • Region Span ~11.6 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 KXD1 variants in ClinVar

2 Conditions Cataloged
not specifiedTotal: 29
not providedTotal: 1

ClinVar Variants & Pathogenicity by Type

Statistics based on transcript NM_024069.4. 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
0
missense
29
clinvar
2
clinvar
31
nonsense
0
start loss
0
frameshift
0
splice donor/acceptor (+/-2bp)
1
clinvar
1
Total00302032
Loading ClinVar variants...

Transcript Catalog

Annotated transcript isoforms across RefSeq and Ensembl databases

Showing 4 of 104 transcripts
Transcript IDSourceProtein IDCoding ExonsMANE Status
NM_024069.4RefSeqNP_076974.24MANE Select
ENST00000222307.9EnsemblENSP00000222307.34MANE Select
NM_001171948.2RefSeqNP_001165419.14Standard
NM_001171949.2RefSeqNP_001165420.14Standard

Gene Ontology (GO) Annotations & Pathways

Biological processes, molecular functions, cellular components and pathways

Biological Process

  • vesicle-mediated transport
  • lysosome localization

Molecular Function

  • protein binding

Cellular Component

  • lysosomal membrane
  • BLOC-1 complex
  • BORC complex

gnomAD Constraint

Source: gnomAD

Gene type
protein_coding
Transcript type
protein_coding
Transcript
ENST00000602094
Coding exons
4
Length
11626
Individuals with no LoFs
125458
Homozygous LoFs
0
Heterozygous LoFs
5
Defined
125463
p
0.0000199
Z-ScoreObservedExpectedObserved/ExpectedMutation RateTotal Possible
Missense0.899881150.7640.000007441161
Missense (PolyPhen)2131.020.67697341
Synonymous-0.04255049.61.010.00000358346
Loss of Function1.2136.280.4783.68e-765

Population LoF Frequency

PopulationCAFp-valueStatus
African00.0absent
Latino/Admixed American00.0absent
Ashkenazi Jewish00.0absent
East Asian00.0absent
Finnish00.0absent
European (Non-Finnish)0.0000270.000026rare
South Asian0.0000670.000065rare
Other00.0absent

dbNSFP Gene Annotations

Source: dbNSFP

Function
FUNCTION: As part of the BORC complex may play a role in lysosomes movement and localization at the cell periphery. Associated with the cytosolic face of lysosomes, the BORC complex may recruit ARL8B and couple lysosomes to microtubule plus-end-directed kinesin motor (PubMed:25898167). May be involved in the biogenesis of lysosome-related organelles such as melanosomes (By similarity). {ECO:0000250|UniProtKB:Q80XH1, ECO:0000269|PubMed:25898167}.;

Recessive Scores

pRec
0.111

Intolerance Scores

RVIS EVS
0.57
RVIS percentile EVS
81.99

Essentials

Essential (CRISPR)
N
Essential (CRISPR2)
N
Essential (gene trap)
N
Indispensability pred.
N
Indispensability score
0.114

Gene Damage Prediction

AllRecessiveDominant
MendelianMediumMediumMedium
Primary ImmunodeficiencyMediumMediumMedium
CancerMediumMediumMedium
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