NM_000108.5(DLD):c.763A>C (p.Met255Leu) AND Pyruvate dehydrogenase E3 deficiency

Germline classification:: Conflicting interpretations of pathogenicity (4 submissions)
Last evaluated:: Dec 20, 2023
Review status:: criteria provided, conflicting classifications

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:: RCV001086796.17

Allele description [Variation Report for NM_000108.5(DLD):c.763A>C (p.Met255Leu)]

NM_000108.5(DLD):c.763A>C (p.Met255Leu)

Gene:

DLD:dihydrolipoamide dehydrogenase [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

7q31.1

Genomic location:

Preferred name:

NM_000108.5(DLD):c.763A>C (p.Met255Leu)

Other names:

p.M255L:ATG>CTG

HGVS:

NC_000007.14:g.107915584A>C
NG_008045.1:g.29444A>C
NM_000108.5:c.763A>CMANE SELECT
NM_001289750.1:c.466A>C
NM_001289751.1:c.694A>C
NM_001289752.1:c.619A>C
NP_000099.2:p.Met255Leu
NP_001276679.1:p.Met156Leu
NP_001276680.1:p.Met232Leu
NP_001276681.1:p.Met207Leu
NC_000007.13:g.107556029A>C
NM_000108.3:c.763A>C
NM_000108.4:c.763A>C

Protein change:

M156L

Links:

dbSNP: rs533405046

NCBI 1000 Genomes Browser:

rs533405046

Molecular consequence:

NM_000108.5:c.763A>C - missense variant - [Sequence Ontology: SO:0001583]
NM_001289750.1:c.466A>C - missense variant - [Sequence Ontology: SO:0001583]
NM_001289751.1:c.694A>C - missense variant - [Sequence Ontology: SO:0001583]
NM_001289752.1:c.619A>C - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Pyruvate dehydrogenase E3 deficiency (DLDD)
Synonyms:: MAPLE SYRUP URINE DISEASE, TYPE III; DIHYDROLIPOAMIDE DEHYDROGENASE DEFICIENCY; Maple syrup urine disease, type 3; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0009529; MedGen: C5574660; Orphanet: 2394; Orphanet: 765; OMIM: 246900

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000466236	Illumina Laboratory Services, Illumina	criteria provided, single submitter (ICSL Variant Classification Criteria 13 December 2019)	Uncertain significance (Jan 12, 2018)	germline	clinical testing	Citation Link,
SCV001077775	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Likely benign (Dec 20, 2023)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001463994	Natera, Inc.	no assertion criteria provided	Likely benign (Apr 16, 2020)	germline	clinical testing
SCV003834694	Revvity Omics, Revvity	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Jun 6, 2023)	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 Illumina Laboratory Services, Illumina, SCV000466236.3

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

Description

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease.

#	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 Labcorp Genetics (formerly Invitae), Labcorp, SCV001077775.6

#	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 Natera, Inc., SCV001463994.1

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

#	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 Revvity Omics, Revvity, SCV003834694.2

#	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

Last Updated: Sep 29, 2024

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