SOX18

protein-coding

SRY-box transcription factor 18, the group of SRY-box transcription factors

Gene summary

This gene encodes a member of the SOX (SRY-related HMG-box) family of transcription factors involved in the regulation of embryonic development and in the determination of the cell fate. The encoded protein may act as a transcriptional regulator after forming a protein complex with other proteins. This protein plays a role in hair, blood vessel, and lymphatic vessel development. Mutations in this gene have been associated with recessive and dominant forms of hypotrichosis-lymphedema-telangiectasia. [provided by RefSeq, Jul 2008]

MANE transcript

NM_018419.3

Inheritance

AR, AD

ClinVar variants

P:9U:150B:55

Top phenotype

Hypotrichosis-lymphedema-telangiectasia syndrome; Hypotrichosis-lymphedema-telangiectasia-renal defect syndrome

gnomAD constraint

pLI —, LoF o/e 0.34

Max pathogenic AF

—

Genomic locus

chr20:64,047,582-64,049,639

External References & Databases

Transcript & Mutation Effects

hg38 • Region Span ~2.1 kb
Loading mutation effect viewer...

GenCC Phenotypes & Disease Associations

Curated gene-disease validity assertions and inheritance patterns

hypotrichosis-lymphedema-telangiectasia syndromeSTRONG

Inheritance Pattern: AR

Disease ID:MONDO:0011914

Submitter: PanelApp Australia

hypotrichosis-lymphedema-telangiectasia-renal defect syndromeMODERATE

Inheritance Pattern: AD

Disease ID:MONDO:0019073

Submitter: Ambry Genetics

hypotrichosis-lymphedema-telangiectasia syndrome (grouping)SUPPORTIVE

Inheritance Pattern: AD

Disease ID:MONDO:0007670

Submitter: Orphanet

hypotrichosis-lymphedema-telangiectasia syndromeLIMITED

Inheritance Pattern: AR

Disease ID:MONDO:0011914

Submitter: Ambry Genetics

hypotrichosis-lymphedema-telangiectasia syndromeLIMITED

Inheritance Pattern: AR

Disease ID:MONDO:0011914

Submitter: Labcorp Genetics (formerly Invitae)

hypotrichosis-lymphedema-telangiectasia-renal defect syndromeSTRONG

Inheritance Pattern: AD

Disease ID:MONDO:0019073

Submitter: PanelApp Australia

hypotrichosis-lymphedema-telangiectasia-renal defect syndromeSTRONG

Inheritance Pattern: AD

Disease ID:MONDO:0019073

Submitter: Genomics England PanelApp

hypotrichosis-lymphedema-telangiectasia syndromeMODERATE

Inheritance Pattern: AD

Disease ID:MONDO:0011914

Submitter: Ambry Genetics

hypotrichosis-lymphedema-telangiectasia syndromeSTRONG

Inheritance Pattern: AR

Disease ID:MONDO:0011914

Submitter: Genomics England PanelApp

hypotrichosis-lymphedema-telangiectasia-renal defect syndromeSTRONG

Inheritance Pattern: AD

Disease ID:MONDO:0019073

Submitter: Labcorp Genetics (formerly Invitae)

Clinical Genomic Database (CGD)

Hypotrichosis-lymphedema-telangiectasia syndrome; Hypotrichosis-lymphedema-telangiectasia-renal defect syndromeAD/AR

Manifestation: Cardiovascular; Craniofacial; Dermatologic; Genitourinary; Neurologic; Renal

Intervention: General

Rationale: Genetic knowledge may be beneficial related to issues such as selection of optimal supportive care, informed medical decision-making, prognostic considerations, and avoidance of unnecessary testing

Comments: Renal transplantation has been described in Hypotrichosis-lymphedema-telangiectasia-renal defect syndrome

Refs: 2484451; 12740761; 24697860Source: CGD (NHGRI)

ClinVar Associated Diseases & Phenotypes

Reported disease conditions connected to SOX18 variants in ClinVar

7 Conditions Cataloged
not providedTotal: 114
Inborn genetic diseasesTotal: 81
Hypotrichosis-lymphedema-telangiectasia-renal defect syndromeTotal: 71
Hypotrichosis-lymphedema-telangiectasia syndromeTotal: 71
not specifiedTotal: 11
SOX18-related disorderTotal: 9
Bladder exstrophy-epispadias-cloacal exstrophy complexTotal: 1

ClinVar Variants & Pathogenicity by Type

Statistics based on transcript NM_018419.3. 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
40
clinvar
2
clinvar
42
missense
2
clinvar
147
clinvar
12
clinvar
1
clinvar
162
nonsense
1
clinvar
3
clinvar
1
clinvar
5
start loss
0
frameshift
3
clinvar
2
clinvar
5
splice donor/acceptor (+/-2bp)
0
Total36150523214

Highest pathogenic variant AF is 0.0000066492016

Loading ClinVar variants...

Transcript Catalog

Annotated transcript isoforms across RefSeq and Ensembl databases

Showing 3 of 3 transcripts
Transcript IDSourceProtein IDCoding ExonsMANE Status
NM_018419.3RefSeqNP_060889.12MANE Select
ENST00000340356.9EnsemblENSP00000341815.72MANE Select
ENST00001131760.1EnsemblENSP00000807952.12Standard

Model Organisms & Knockout Phenotypes

Observed phenotypic effects in mouse and zebrafish models

Gene / ModelOrganismObserved Phenotype
sox18Danio rerio

Structure: vascular lymphangioblast

Quality: decreased amount

abnormal

Gene Ontology (GO) Annotations & Pathways

Biological processes, molecular functions, cellular components and pathways

Biological Process

  • negative regulation of transcription by RNA polymerase II
  • angiogenesis
  • vasculogenesis
  • in utero embryonic development
  • hair follicle development

Molecular Function

  • RNA polymerase II proximal promoter sequence-specific DNA binding
  • DNA-binding transcription factor activity, RNA polymerase II-specific
  • DNA-binding transcription activator activity, RNA polymerase II-specific
  • transcription regulatory region DNA binding
  • protein heterodimerization activity

Cellular Component

  • nuclear chromatin
  • nucleus
  • nuclear transcription factor complex

gnomAD Constraint

Source: gnomAD

Gene type
protein_coding
Transcript type
protein_coding
Transcript
ENST00000340356
Coding exons
2
Length
1919
Individuals with no LoFs
111033
Homozygous LoFs
0
Heterozygous LoFs
1
Defined
111034
p
0.00000450
Z-ScoreObservedExpectedObserved/ExpectedMutation RateTotal Possible
Missense0.8601041320.7890.000006112355
Missense (PolyPhen)2534.5970.72261587
Synonymous-0.0008106060.01.000.00000289856
Loss of Function1.5025.970.3352.54e-7107

Population LoF Frequency

PopulationCAFp-valueStatus
African00.0absent
Latino/Admixed American00.0absent
Ashkenazi Jewish00.0absent
East Asian00.0absent
Finnish00.0absent
European (Non-Finnish)0.00000990.0000099rare
South Asian00.0absent
Other00.0absent

dbNSFP Gene Annotations

Source: dbNSFP

Function
FUNCTION: Binds to the consensus sequence 5'-AACAAAG-3' and is able to trans-activate transcription via this site. {ECO:0000250}.;
Disease
DISEASE: Hypotrichosis-lymphedema-telangiectasia syndrome (HLTS) [MIM:607823]: A syndrome characterized by absent eyebrows and eyelashes, lymphatic edemas of the inferior members or eyelids, and peripheral vein anomalies. {ECO:0000269|PubMed:12740761}. Note=The disease is caused by mutations affecting the gene represented in this entry.; DISEASE: Hypotrichosis-lymphedema-telangiectasia-renal defect syndrome (HLTRS) [MIM:137940]: A syndrome characterized by sparse hair, lymphatic edemas, peripheral vein anomalies, and renal disease. {ECO:0000269|PubMed:12740761, ECO:0000269|PubMed:24697860}. Note=The disease is caused by mutations affecting the gene represented in this entry.;

Recessive Scores

pRec
0.147

Essentials

Essential (CRISPR)
N
Essential (CRISPR2)
N
Essential (gene trap)
N
Indispensability pred.
E
Indispensability score
0.965

Gene Damage Prediction

AllRecessiveDominant
MendelianMediumMediumMedium
Primary ImmunodeficiencyMediumMediumMedium
CancerMediumMediumMedium
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