NM_002693.3(POLG):c.1586-5del AND Progressive sclerosing poliodystrophy

Germline classification:: Benign (2 submissions)
Last evaluated:: Feb 1, 2024
Review status:: 2 stars out of maximum of 4 stars
criteria provided, multiple submitters, no conflicts

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV000466342.20

Allele description [Variation Report for NM_002693.3(POLG):c.1586-5del]

NM_002693.3(POLG):c.1586-5del

Genes:

POLG:DNA polymerase gamma, catalytic subunit [Gene - OMIM - HGNC]
MIR6766:microRNA 6766 [Gene - HGNC]

Variant type:

Deletion

Cytogenetic location:

15q26.1

Genomic location:

Preferred name:

NM_002693.3(POLG):c.1586-5del

HGVS:

NC_000015.10:g.89326743del
NG_008218.2:g.13053del
NM_001126131.2:c.1586-5del
NM_002693.3:c.1586-5delMANE SELECT
LRG_765t1:c.1586-5del
LRG_765:g.13053del
NC_000015.9:g.89869974del
NC_000015.9:g.89869974delG
NM_002693.2:c.1586-5del
NM_002693.2:c.1586-5delC
NR_106824.1:n.68del

Links:

dbSNP: rs2307434

NCBI 1000 Genomes Browser:

rs2307434

Molecular consequence:

NM_001126131.2:c.1586-5del - intron variant - [Sequence Ontology: SO:0001627]
NM_002693.3:c.1586-5del - intron variant - [Sequence Ontology: SO:0001627]
NR_106824.1:n.68del - non-coding transcript variant - [Sequence Ontology: SO:0001619]

Condition(s)

Name:: Progressive sclerosing poliodystrophy (MTDPS4A)
Synonyms:: Alpers disease; Alpers diffuse degeneration of cerebral gray matter with hepatic cirrhosis; Alpers progressive infantile poliodystrophy; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0008758; MedGen: C0205710; Orphanet: 726; OMIM: 203700

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000556237	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Benign (Feb 1, 2024)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV000887272	Wong Mito Lab, Molecular and Human Genetics, Baylor College of Medicine	criteria provided, single submitter (ACMG Guidelines, 2015)	Benign (Oct 1, 2018)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV000556237

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Benign
(Feb 1, 2024)

germline

clinical testing

PubMed (1)
[See all records that cite this PMID]

SCV000887272

Wong Mito Lab, Molecular and Human Genetics, Baylor College of Medicine

criteria provided, single submitter

(ACMG Guidelines, 2015)

Benign
(Oct 1, 2018)

germline

clinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group, Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee.

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]

PMID:: 25741868
PMCID:: PMC4544753

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV000556237.9

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Wong Mito Lab, Molecular and Human Genetics, Baylor College of Medicine, SCV000887272.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

The NM_002693.2:c.1586-5del (NP_002684.1:p.=) [GRCH38: NC_000015.10:g.89326743del] variant in POLG gene is interpretated to be a Benign based on ACMG guidelines (PMID: 25741868). This variant meets the following evidence codes reported in the ACMG-guideline. BS1:The minor allele frequency of this allele is high for Mitochondrial DNA depletion syndrome 4A (Alpers type). BS2:Observation of the variant in controls is inconsistent with penetrance of Mitochondrial DNA depletion syndrome 4A (Alpers type). BP4:Computational evidence/predictors indicate no impact on the POLG structure, function, or protein-protein interaction. Based on the evidence criteria codes applied, the variant is suggested to be Benign.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Nov 24, 2024

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