유전자
POLG
DNA polymerase gamma, catalytic subunit
요약
- 세포유전학적 위치
- 15q26.1
- 좌표
- 염색체 15: 89,316,320–89,334,824 (GRCh38)
- 엑손
- 엑손 23개, 18.5 kb에 걸쳐
- 단백질
- 아미노산 1,239개
- 다른 이름
- POLG1, POLGA
- MANE Select 전사체
- ENST00000268124.11NM_002693.3
- 유전자좌 유형
- gene with protein product
- Very high
- Confident
- Low
- Very low
기준 게놈GRCh38hg38
유전자 및 변이 페이지의 위치 정보는 이 브라우저에서 선택한 설정을 따릅니다.
이 유전자와 관련된 큐레이션 보고서
원발성 미토콘드리아 질환
- 운동실조 신경병증 스펙트럼
POLG 또는 TWNK와 관련된 질환으로, 균형과 협응 장애, 감각 신경 손상, 안구 운동 문제가 나타나며 때때로 발작이 동반될 수 있습니다.
- 3명의 GenCC 제출자가 확정적 또는 강함으로 평가합니다
알면 달라지는 점
이 결과를 알면 발프로산 회피를 포함한 발작 관리에 대한 안내를 받을 수 있습니다.
- 미토콘드리아 DNA 결실을 동반한 진행성 외안근마비
POLG, TWNK, SLC25A4, RRM2B와 같은 핵 유전자의 변이로 여러 개의 미토콘드리아 DNA 결실이 생겨 발생하며, 주로 성인기에 눈꺼풀 처짐, 안구 운동 약화, 근력 저하를 일으킵니다.
- 4명의 GenCC 제출자가 확정적 또는 강함으로 평가합니다
알면 달라지는 점
이 결과를 알면 눈, 심장 및 삼킴 기능에 대한 모니터링과 POLG 질환에서 발프로산 회피에 대한 안내를 받을 수 있습니다.
- 미토콘드리아 DNA 고갈 증후군
POLG, TWNK, TK2, DGUOK, MPV17, RRM2B, SUCLA2와 같은 핵 유전자의 변이로 발생하며, 미토콘드리아 DNA의 양을 감소시켜 근육, 간 또는 뇌 질환을 일으킬 수 있습니다.
- 5명의 GenCC 제출자가 확정적 또는 강함으로 평가합니다
알면 달라지는 점
이 결과는 바로 실천으로 이어질 수 있습니다. POLG 질환에서는 치명적인 간부전의 위험 때문에 발프로산(valproate)을 반드시 피해야 하며, TK2 결핍증에는 뉴클레오사이드 치료법이 있습니다.
POLG의 구조
- 코딩 서열
- 비번역 영역
- 인트론
- 전사 방향
- 알려진 질병 유발 부위
v1.5 릴리스 기준, 이 유전자의 MANE Select 전사체 엑손이며 NCBI와 EMBL-EBI 자료를 바탕으로 하고 GRCh38 참조 게놈에 기반합니다.
Chromosome bands from UCSC's GRCh38 ideogram (2022-10-29).
Nearby genes from Ensembl release 116, on GRCh38.
유전자 전체 18.5 kb 중 엑손이 4.5 kb를 차지하며, 이 중 3,720개의 염기가 단백질을 암호화합니다.
전장 유전체 검사가 POLG 유전자를 읽는 방법
356
POLG 내 위치 중 ClinVar가 병원성 또는 가능성 높은 병원성으로 분류하는 위치
이 중 어느 곳도 짧은 리드가 판독하기 어려운 구간에 있지 않습니다.
전장 유전체 검사는 인트론을 포함해 POLG의 전체 18.5kb를 모두 포함하며, 엑손 4.5kb만 보는 것이 아닙니다.
같은 질환과 연관된 유전자
- DNA2DNA replication helicase/nuclease 2질환 2개 공유
- RRM2Bribonucleotide reductase regulatory TP53 inducible subunit M2B질환 2개 공유
- SLC25A4solute carrier family 25 member 4질환 2개 공유
- TWNKtwinkle mtDNA helicase질환 2개 공유
- AFG3L2AFG3 like matrix AAA peptidase subunit 2질환 1개 공유
- AGKacylglycerol kinase질환 1개 공유
- DGUOKdeoxyguanosine kinase질환 1개 공유
- FBXL4F-box and leucine rich repeat protein 4질환 1개 공유
- GUK1guanylate kinase 1질환 1개 공유
- LIG3DNA ligase 3질환 1개 공유
- MGME1mitochondrial genome maintenance exonuclease 1질환 1개 공유
- MPV17mitochondrial inner membrane protein MPV17질환 1개 공유
Traits linked to POLG
The Human Phenotype Ontology lists these as features of the rare conditions POLG can cause. Each trait's page lists the other genes linked to it.
Abnormality of the nervous system
- Ataxia
- Babinski sign
- Degeneration of cerebellum
- Degeneration of cerebrum
- Difficulty articulating speech
- Dystonia
- Inability to coordinate movements when walking
- Instability or lack of coordination of central trunk muscles
Show 93 more traits
- Intention tremor
- Nerve damage causing decreased feeling and movement
- Numbness
- Parkinsonism
- Peripheral neuropathy
- Sensory ataxic neuropathy
- Slow movements
- Absent reflexes
- Leukoencephalopathy
- Abnormal cerebellar cortex morphology
- Abnormal cerebral white matter morphology
- Abnormal gait
- Abnormal thalamic MRI signal intensity
- Abnormality of central motor conduction
- Abnormality of movement
- Anxiety
- Atrophy/Degeneration involving the spinal cord
- Behavioral abnormality
- Bilateral tonic-clonic seizure with focal onset
- Cerebral infarct
- Choreoathetosis
- Cognitive impairment
- Coma
- Decreased motor nerve conduction velocity
- Decreased number of large peripheral myelinated nerve fibers
- Decreased reflex response
- Decreased sensory nerve conduction velocity
- Demyelinating peripheral neuropathy
- Depression
- Difficulty performing quick and alternating movements
- EEG with occipital epileptiform discharges
- Encephalopathy
- Epilepsia partialis continua
- Epilepsy
- Focal myoclonic seizure
- Focal T2 hyperintense thalamic lesion
- Generalized non-convulsive status epilepticus without coma
- Gliosis
- Global developmental delay
- Grand mal seizures
- Hand tremor
- Headache
- Impaired distal proprioception
- Impaired distal vibration sensation
- Impaired vibratory sensation
- Jerking
- Lack of coordination of movement
- Loss of developmental milestones
- Migraine
- Partial paralysis of legs
- Peripheral axonal neuropathy
- Pins and needles feeling
- Positive Romberg sign
- Progressive brain disease
- Progressive cerebellar ataxia
- Repeated seizures without recovery between them
- Resting tremor
- Seizure affecting one half of brain
- Sensory axonal neuropathy
- Slurred speech
- Tetraparesis
- Tremor
- Uncoordinated limb movement
- Vegetative state
- Worsening neurological symptoms
- Abnormal cerebrospinal fluid morphology
- Abnormality of extrapyramidal motor function
- Action tremor
- Can't control feelings
- Decreased muscle movement
- Decreased sensation in extremities
- Dementia
- Focal white matter lesions
- Intellectual disability
- Lethargy
- Memory impairment
- Parkinsonism with favorable response to dopaminergic medication
- Sensory ataxia
- Shuffled walk
- Stooped posture
- Twitching
- Bipolar disorder
- Astrocytosis
- Cerebral cortical neurodegeneration
- Decreased touch sensation in extremities
- High stepping
- Hypointensity of cerebral white matter on MRI
- Limb ataxia
- Loss of brain cells
- Paralysis
- Poor concentration
- Progressive gait ataxia
- Wide based walk
Abnormality of the musculoskeletal system
- Cytochrome C oxidase-negative muscle fibers
- Difficulty walking up stairs
- Increased variability in muscle fiber diameter
- Muscle fiber degeneration
- Muscle weakness
- Proximal neurogenic muscle weakness
- Ragged-red muscle fibers
- Scoliosis
Show 30 more traits
- Weakness of outermost muscles
- EMG: myopathic abnormalities
- Fiber type grouping
- Generalized decreased muscle tone
- Involuntary muscle stiffness, contraction, or spasm
- Low muscle tone
- Mitochondrial myopathy
- Muscle tissue disease
- Neck flexion weakness
- Osteoporosis
- Progressive spasticity
- Spastic paraparesis
- Spasticity and rigidity of muscles
- Tired easily
- Centrally nucleated skeletal muscle fibers
- Cogwheel rigidity
- Decreased muscle mass
- Diffuse skeletal muscle wasting
- Frequent falls
- Muscle degeneration
- Muscle stiffness
- Rigidity
- Muscle spasm
- Breakdown of skeletal muscle
- Decreased lung function due to weak breathing muscles
- Distal muscle wasting
- Generalized muscle weakness
- Muscle fiber necrosis
- Progressive muscle weakness
- Subsarcolemmal accumulations of abnormally shaped mitochondria
Abnormality of the digestive system
- Intestinal pseudo-obstruction
- Poor swallowing
- Abdominal bloating
- Abdominal cramps
- Abdominal pain
- Acid reflux
- Atrophic muscularis propria
- Diarrhea
Show 24 more traits
- Feeling full quickly when eating
- Gastrointestinal dysmotility
- Increased bowel sounds
- Nausea
- Poor appetite
- Small intestinal dysmotility
- Vomiting
- Abnormality of the gastrointestinal tract
- Accumulation of fluid in the abdomen
- Acute liver failure
- Bile duct proliferation
- Colonic diverticula
- Delayed gastric emptying
- Jaundice
- Liver failure
- Micronodular cirrhosis
- Constipation
- Scar tissue replaces healthy tissue in the liver
- Abnormality of the liver
- Enlarged liver
- Intermittent diarrhea
- Intestinal perforation
- Malabsorption
- Malnutrition
Abnormality of the eye
- Cerebral visual impairment
- Double vision
- Drooping of both upper eyelids
- Drooping upper eyelid
- Inward turning cross eyed
- Progressive external ophthalmoplegia
- Weakness of muscles controlling eye movement
- Paralysis or weakness of muscles within or surrounding outer part of eye
Show 19 more traits
- Abnormality of eye movement
- Abnormality of the eye
- Abnormality of vision
- Eye muscle paralysis
- Gaze-evoked nystagmus
- Hemianopia
- Involuntary, rapid, rhythmic eye movements
- Optic atrophy
- Total ophthalmoplegia
- Upgaze palsy
- Blindness
- Clouding of the lens of the eye
- Color blindness
- Optic neuritis
- Retina issue
- Retinal pigment epithelial mottling
- Visual impairment
- Abnormality of visual evoked potentials
- Visual loss
Laboratory abnormality
- Elevated circulating deoxyuridine concentration
- Elevated circulating thymidine concentration
- Reduced tissue thymidine phosphorylase activity
- Anasarca
- High liver enzymes
- Higher than normal levels of lactate in blood
- Increased blood alanine
- Increased circulating pyruvate concentration
Show 13 more traits
- Increased CSF protein concentration
- Increased lactate in body
- Elevated blood creatine phosphokinase
- Glucose intolerance
- Macrovesicular hepatic steatosis
- Mildly elevated creatine kinase
- Diabetes mellitus
- Fluid retention
- High levels of ketone bodies
- 3-Methylglutaconic aciduria
- Acidic urine
- Ethylmalonic aciduria
- Microvesicular hepatic steatosis
Abnormality of the cardiovascular system
- Disease of the heart muscle
- Mitral valve prolapse
- ST segment elevation
- Abnormal heart rate
- Left ventricular hypertrophy
- Mitral regurgitation
- Quivering upper heart chambers resulting in irregular heartbeat
- Reduced left ventricular ejection fraction
Show 3 more traits
Abnormality of limbs
- Areflexia of lower limbs
- Abnormality of the hand
- Foot drop
- Limb muscle weakness
- Quadriceps weakness
- Weak shoulder muscles
- Absent ankle reflexes
- Hand muscle weakness
Show 2 more traits
외부 링크
단백질
이 정보의 출처
- HGNC: 유전자의 기호, 명칭, 다른 기호 및 위치입니다.
- NCBI와 EMBL-EBI의 MANE Select v1.5: 전사체, 엑손 및 코딩 서열입니다.
- GenCC와 ClinGen, 2026-10-16 공개본: 해당 유전자와 연관된 질환과 그 연관성의 강도입니다.
- ACMG 이차 소견 목록, SF v3.2입니다.
- ClinVar와 GIAB 층화 자료: 알려진 질병 유발 부위와 짧은 리드(short read)로 분석하기 어려운 영역입니다.
- The Human Phenotype Ontology, release 2026-09-01: the traits linked to the gene. Find out more at hpo.jax.org.
- 데이터 릴리스 2026.10.16-c6eea6bf.
Cite this page
Dante Labs. (n.d.). POLG gene: DNA polymerase gamma, catalytic subunit. Retrieved 2026년 10월 16일, from https://dantelabs.com/ko/genes/polg
Dante Labs. POLG gene: DNA polymerase gamma, catalytic subunit [Internet]. [cited 2026년 10월 16일]. Available from: https://dantelabs.com/ko/genes/polg
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