Gene
IARS2
isoleucyl-tRNA synthetase 2, mitochondrial
- HGNC 29685↗(opens in a new tab)
- Ensembl gene ENSG00000067704↗(opens in a new tab)
- NCBI Gene 55699↗(opens in a new tab)
Summary
- Cytogenetic location
- 1q41
- Coordinates
- Chromosome 1: 220,094,132–220,148,041 (GRCh38)
- Exons
- 23 exons across 53.9 kb
- Protein
- 1,012 amino acids
- Also known as
- FLJ10326
- MANE Select transcript
- ENST00000366922.3NM_018060.4
- Locus type
- gene with protein product
- Very high
- Confident
- Low
- Very low
Reference genomeGRCh38hg38
Positions on gene and variant pages follow this choice, in this browser.
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No Genome Test report reads IARS2 yet. The test sequences your whole genome, so your data includes it all the same.
How IARS2 is laid out
- Coding sequence
- Untranslated region
- Intron
- Direction of transcription
- Known disease-causing sites
- Stretches short reads find hard
Exons of the gene's MANE Select transcript (release v1.5), from NCBI and EMBL-EBI, on the GRCh38 reference genome.
Chromosome bands from UCSC's GRCh38 ideogram (2022-10-29).
Nearby genes from Ensembl release 116, on GRCh38.
Exons make up 3.5 kb of the gene's 53.9 kb; 3,039 of those bases code for the protein.
How a genome test reads IARS2
6
positions in IARS2 where ClinVar classes a change as pathogenic or likely pathogenic
None of them falls in a region short reads find hard.
A whole genome covers all 53.9 kb of IARS2, introns included, not only the 3.5 kb of exons.
Traits linked to IARS2
The Human Phenotype Ontology lists these as features of the rare conditions IARS2 can cause. Each trait's page lists the other genes linked to it.
Abnormality of the nervous system
- Decreased sensation in extremities
- Motor delay
- Pain insensitivity
- Peripheral neuropathy
- Too much cerebrospinal fluid in the brain
- Abnormality of movement
- Abnormal basal ganglia MRI signal intensity
- Abnormal brainstem MRI signal intensity
Show 37 more traits
- Abnormal dentate nucleus morphology
- Abnormal thalamic MRI signal intensity
- Brain imaging abnormality
- Diffuse spongiform leukoencephalopathy
- Elevated brain lactate level by MRS
- Focal T2 hyperintense basal ganglia lesion
- Focal T2 hyperintense brainstem lesion
- Gliosis
- Global developmental delay
- Involuntary movements
- Leukodystrophy
- Loss of developmental milestones
- Upper motor neuron dysfunction
- Worsening neurological symptoms
- Abnormality of extrapyramidal motor function
- Agenesis of corpus callosum
- Ataxia
- Chorea
- Choreoathetosis
- Dystonia
- Epilepsy
- Hyperactive movements
- Hypsarrhythmia
- Involuntary writhing movements in fingers, hands, toes, and feet
- Neuronal loss in basal ganglia
- Olivopontocerebellar atrophy
- Sensory axonal neuropathy
- Underdevelopment of part of brain called corpus callosum
- Degeneration of cerebellum
- Disorder of involuntary muscle movements
- Encephalomalacia
- Infantile spasms
- Repeated seizures without recovery between them
- Damage to nerves that sense feeling
- Decrease in size of the outer layer of the brain due to loss of brain cells
- Decreased reflex response
- Nerve damage causing decreased feeling and movement
Abnormality of the musculoskeletal system
- Coronal cleft vertebrae
- Delayed maturation of end part of long bone
- Double-Jointed
- Low muscle tone
- Scoliosis
- Short long bone
- Shorter than typical length between neck and abdomen
- Spondyloepimetaphyseal dysplasia
Show 18 more traits
- Abnormal skeletal development
- Cervical spinal canal stenosis
- Decreased muscle tone in infant
- Narrow spinal canal
- Spondyloepiphyseal dysplasia
- Thoracic kyphoscoliosis
- Hypoplasia of the odontoid process
- Abnormality of the skeletal system
- Involuntary muscle stiffness, contraction, or spasm
- Multiple joint contractures
- Muscle degeneration
- Muscle tissue disease
- Muscle weakness
- Spastic diplegia
- Weakness of outermost muscles
- Flexed joint that cannot be straightened
- Osteopenia
- Prominent swayback
Abnormality of the eye
- Clouding of the lens of the eye
- Farsightedness
- Involuntary, rapid, rhythmic eye movements
- Clouding of the lens of the eye at birth
- Eye muscle paralysis
- Optic atrophy
- Optic nerve issue
- Drooping upper eyelid
Show 4 more traits
External links
Gene records
Transcript
Protein
Where this comes from
- HGNC: the gene's symbol, name, other symbols and location.
- MANE Select v1.5, from NCBI and EMBL-EBI: the transcript, its exons and coding sequence.
- ClinVar and the GIAB stratifications: known disease-causing sites, and the regions short reads find hard.
- The Human Phenotype Ontology, release 2026-09-01: the traits linked to the gene. Find out more at hpo.jax.org.
- Data release 2026.10.16-c6eea6bf.
Cite this page
Dante Labs. (n.d.). IARS2 gene: isoleucyl-tRNA synthetase 2, mitochondrial. Retrieved 17 October 2026, from https://dantelabs.com/genes/iars2
Dante Labs. IARS2 gene: isoleucyl-tRNA synthetase 2, mitochondrial [Internet]. [cited 17 October 2026]. Available from: https://dantelabs.com/genes/iars2
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