NM_000709.4(BCKDHA):c.776C>T (p.Pro259Leu) AND Maple syrup urine disease

Germline classification:: Pathogenic (1 submission)
Last evaluated:: Oct 21, 2022
Review status:: 1 star out of maximum of 4 stars
criteria provided, single submitter

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:: RCV002024792.6

Allele description [Variation Report for NM_000709.4(BCKDHA):c.776C>T (p.Pro259Leu)]

NM_000709.4(BCKDHA):c.776C>T (p.Pro259Leu)

Gene:

BCKDHA:branched chain keto acid dehydrogenase E1 subunit alpha [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

19q13.2

Genomic location:

Preferred name:

NM_000709.4(BCKDHA):c.776C>T (p.Pro259Leu)

HGVS:

NC_000019.10:g.41422293C>T
NG_013004.1:g.29505C>T
NM_000709.4:c.776C>TMANE SELECT
NM_001164783.2:c.776C>T
NP_000700.1:p.Pro259Leu
NP_001158255.1:p.Pro259Leu
NC_000019.9:g.41928198C>T

Protein change:

P259L

Links:

dbSNP: rs2122143393

NCBI 1000 Genomes Browser:

rs2122143393

Molecular consequence:

NM_000709.4:c.776C>T - missense variant - [Sequence Ontology: SO:0001583]
NM_001164783.2:c.776C>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Maple syrup urine disease (MSUD)
Identifiers:: MONDO: MONDO:0009563; MeSH: D008375; MedGen: C0024776; Orphanet: 511; OMIM: PS248600

Recent activity

Clear Turn Off Turn On

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

Help

Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV002308311	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Pathogenic (Oct 21, 2022)	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

SCV002308311

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Pathogenic
(Oct 21, 2022)

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

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV002308311.3

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

Description

For these reasons, this variant has been classified as Pathogenic. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt BCKDHA protein function. ClinVar contains an entry for this variant (Variation ID: 1519764). This missense change has been observed in individual(s) with maple syrup urine disease (Invitae). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 259 of the BCKDHA protein (p.Pro259Leu).

#	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

ClinVar

Relating variation to medicine