ICE1

protein-coding

interactor of little elongation complex ELL subunit 1

Gene summary

Enables protein-macromolecule adaptor activity. Involved in several processes, including positive regulation of intracellular protein transport; positive regulation of transcription by RNA polymerase III; and snRNA transcription. Located in Cajal body; euchromatin; and histone locus body. Part of transcription elongation factor complex. [provided by Alliance of Genome Resources, Jul 2025]

Previous symbols:
  • KIAA0947

MANE transcript

NM_015325.3

Inheritance

AR

ClinVar variants

U:323B:42

Top phenotype

ICE1-related disorder

gnomAD constraint

pLI —, LoF o/e 0.09

Max pathogenic AF

—

Genomic locus

chr5:5,420,664-5,490,220

External References & Databases

Transcript & Mutation Effects

hg38 • Region Span ~69.6 kb
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GenCC Phenotypes & Disease Associations

Curated gene-disease validity assertions and inheritance patterns

intellectual disabilityMODERATE

Inheritance Pattern: AR

Disease ID:MONDO:0001071

Submitter: PanelApp Australia

ClinVar Associated Diseases & Phenotypes

Reported disease conditions connected to ICE1 variants in ClinVar

3 Conditions Cataloged
not specifiedTotal: 328
not providedTotal: 15
ICE1-related disorderTotal: 6

ClinVar Variants & Pathogenicity by Type

Statistics based on transcript NM_015325.3. 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
4
clinvar
6
clinvar
1
clinvar
11
missense
308
clinvar
31
clinvar
4
clinvar
343
nonsense
5
clinvar
5
start loss
0
frameshift
2
clinvar
2
splice donor/acceptor (+/-2bp)
4
clinvar
4
Total00323375365
Loading ClinVar variants...

Transcript Catalog

Annotated transcript isoforms across RefSeq and Ensembl databases

Showing 4 of 7 transcripts
Transcript IDSourceProtein IDCoding ExonsMANE Status
NM_015325.3RefSeqNP_056140.119MANE Select
ENST00000296564.9EnsemblENSP00000296564.719MANE Select
ENST00000512608.5EnsemblENSP00000485617.17Standard
ENST00001132482.1EnsemblENSP00000805137.119Standard

Model Organisms & Knockout Phenotypes

Observed phenotypic effects in mouse and zebrafish models

Gene / ModelOrganismObserved Phenotype
ice1Danio rerio

Structure: liver

Quality: quality

abnormal

Gene Ontology (GO) Annotations & Pathways

Biological processes, molecular functions, cellular components and pathways

Pathways ConsensusPathDB

  • Gene expression (Transcription)
  • RNA polymerase II transcribes snRNA genes
  • RNA Polymerase II Transcription

Biological Process

  • positive regulation of protein complex assembly
  • snRNA transcription by RNA polymerase II
  • snRNA transcription by RNA polymerase III
  • positive regulation of transcription by RNA polymerase III
  • positive regulation of intracellular protein transport

Molecular Function

  • protein binding
  • protein homodimerization activity

Cellular Component

  • nucleoplasm
  • transcription elongation factor complex
  • Cajal body
  • nuclear body
  • transcriptionally active chromatin

gnomAD Constraint

Source: gnomAD

Gene type
protein_coding
Transcript type
protein_coding
Transcript
ENST00000296564
Coding exons
19
Length
69571
Individuals with no LoFs
124614
Homozygous LoFs
0
Heterozygous LoFs
31
Defined
124645
p
0.000124
Z-ScoreObservedExpectedObserved/ExpectedMutation RateTotal Possible
Missense0.72910691.14e+30.9390.000057714783
Missense (PolyPhen)216345.570.625064860
Synonymous0.7814104310.9520.00002394435
Loss of Function7.57780.20.08730.000004061146

Population LoF Frequency

PopulationCAFp-valueStatus
African0.0000650.000065rare
Latino/Admixed American0.000230.00023rare
Ashkenazi Jewish0.000310.00030rare
East Asian0.000280.00028rare
Finnish00.0absent
European (Non-Finnish)0.000120.00012rare
South Asian0.0000330.000033rare
Other00.0absent

dbNSFP Gene Annotations

Source: dbNSFP

Function
FUNCTION: Component of the little elongation complex (LEC), a complex required to regulate small nuclear RNA (snRNA) gene transcription by RNA polymerase II and III (PubMed:22195968, PubMed:23932780). Specifically acts as a scaffold protein that promotes the LEC complex formation and recruitment and RNA polymerase II occupancy at snRNA genes in subnuclear bodies (PubMed:23932780). {ECO:0000269|PubMed:22195968, ECO:0000269|PubMed:23932780}.;

Intolerance Scores

RVIS EVS
-0.17
RVIS percentile EVS
40.58

Essentials

Essential (gene trap)
E
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