FYTTD1

protein-coding

forty-two-three domain containing 1, the group of Transcription and export complex 1 subunits

Gene summary

Enables mRNA binding activity. Involved in mRNA export from nucleus. Located in nuclear speck. [provided by Alliance of Genome Resources, Jun 2026]

MANE transcript

NM_032288.7

Inheritance

—

ClinVar variants

U:57B:1

Top phenotype

—

gnomAD constraint

pLI —, LoF o/e 0.22

Max pathogenic AF

—

Genomic locus

chr3:197,737,179-197,787,596

External References & Databases

Transcript & Mutation Effects

hg38 • Region Span ~50.4 kb
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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 FYTTD1 variants in ClinVar

1 Conditions Cataloged
not specifiedTotal: 50

ClinVar Variants & Pathogenicity by Type

Statistics based on transcript NM_032288.7. 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
2
clinvar
1
clinvar
3
missense
52
clinvar
52
nonsense
0
start loss
0
frameshift
0
splice donor/acceptor (+/-2bp)
3
clinvar
3
Total00571058
Loading ClinVar variants...

Transcript Catalog

Annotated transcript isoforms across RefSeq and Ensembl databases

Showing 4 of 27 transcripts
Transcript IDSourceProtein IDCoding ExonsMANE Status
NM_032288.7RefSeqNP_115664.29MANE Select
ENST00000241502.9EnsemblENSP00000241502.39MANE Select
NM_001011537.3RefSeqNP_001011537.29Standard
ENST00000412924.5EnsemblENSP00000409257.13Standard

Gene Ontology (GO) Annotations & Pathways

Biological processes, molecular functions, cellular components and pathways

Pathways ConsensusPathDB

  • Gene expression (Transcription)
  • RNA Polymerase II Transcription
  • Metabolism of RNA
  • Cleavage of Growing Transcript in the Termination Region
  • RNA Polymerase II Transcription Termination

Biological Process

  • mRNA export from nucleus

Molecular Function

  • RNA binding
  • mRNA binding
  • protein binding

Cellular Component

  • nucleoplasm
  • nuclear speck

gnomAD Constraint

Source: gnomAD

Gene type
protein_coding
Transcript type
protein_coding
Transcript
ENST00000241502
Coding exons
9
Length
50418
Individuals with no LoFs
125741
Homozygous LoFs
0
Heterozygous LoFs
6
Defined
125747
p
0.0000239
Z-ScoreObservedExpectedObserved/ExpectedMutation RateTotal Possible
Missense0.6081521750.8700.000009742049
Missense (PolyPhen)5272.420.71803794
Synonymous0.8555361.50.8610.00000317628
Loss of Function3.06418.10.2220.00000108202

Population LoF Frequency

PopulationCAFp-valueStatus
African00.0absent
Latino/Admixed American0.0000590.000058rare
Ashkenazi Jewish0.000100.000099rare
East Asian0.0000540.000054rare
Finnish00.0absent
European (Non-Finnish)0.0000100.0000088rare
South Asian00.0absent
Other0.000170.00016rare

dbNSFP Gene Annotations

Source: dbNSFP

Function
FUNCTION: Required for mRNA export from the nucleus to the cytoplasm. Acts as an adapter that uses the DDX39B/UAP56-NFX1 pathway to ensure efficient mRNA export and delivering to the nuclear pore. Associates with spliced and unspliced mRNAs simultaneously with ALYREF/THOC4. {ECO:0000269|PubMed:19836239}.;

Recessive Scores

pRec
0.104

Intolerance Scores

LoFtool
0.465
RVIS EVS
0.04
RVIS percentile EVS
56.92

Essentials

Essential (CRISPR)
N
Essential (CRISPR2)
N
Essential (gene trap)
N
Indispensability pred.
N
Indispensability score
0.281

Gene Damage Prediction

AllRecessiveDominant
MendelianMediumMediumMedium
Primary ImmunodeficiencyMediumMediumMedium
CancerMediumMediumMedium
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