NM_020166.5(MCCC1):c.1268-7A>G AND 3-methylcrotonyl-CoA carboxylase 1 deficiency

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Oct 18, 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:: RCV001201806.7

Allele description [Variation Report for NM_020166.5(MCCC1):c.1268-7A>G]

NM_020166.5(MCCC1):c.1268-7A>G

Gene:

MCCC1:methylcrotonyl-CoA carboxylase subunit 1 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

3q27.1

Genomic location:

Preferred name:

NM_020166.5(MCCC1):c.1268-7A>G

HGVS:

NC_000003.12:g.183039142T>C
NG_008100.1:g.65436A>G
NM_001293273.2:c.917-7A>G
NM_001363880.1:c.941-7A>G
NM_020166.5:c.1268-7A>GMANE SELECT
NC_000003.11:g.182756930T>C
NM_020166.4:c.1268-7A>G

Links:

dbSNP: rs1417892958

NCBI 1000 Genomes Browser:

rs1417892958

Molecular consequence:

NM_001293273.2:c.917-7A>G - intron variant - [Sequence Ontology: SO:0001627]
NM_001363880.1:c.941-7A>G - intron variant - [Sequence Ontology: SO:0001627]
NM_020166.5:c.1268-7A>G - intron variant - [Sequence Ontology: SO:0001627]

Condition(s)

Name:: 3-methylcrotonyl-CoA carboxylase 1 deficiency (MCC1D)
Synonyms:: MCCD TYPE 1; METHYLCROTONYLGLYCINURIA TYPE I; MCC 1 deficiency; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0008861; MedGen: C0268600; Orphanet: 6; OMIM: 210200

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV001372897	Invitae	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Oct 18, 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

SCV001372897

Invitae

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Oct 18, 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):240-242.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

Details of each submission

From Invitae, SCV001372897.5

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

Description

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. ClinVar contains an entry for this variant (Variation ID: 933566). This variant has been observed in individual(s) with clinical features of 3 methylcrotonyl-CoA carboxylase deficiency (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 present in population databases (no rsID available, gnomAD 0.004%). This sequence change falls in intron 11 of the MCCC1 gene. It does not directly change the encoded amino acid sequence of the MCCC1 protein.

#	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: Feb 14, 2024

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