2-171785342-G-A

Position:

• chr2-171785342-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_003705.5(SLC25A12):​c.1969C>T​(p.Leu657Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: SLC25A12 NM_003705.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.97

Genes affected

SLC25A12 (HGNC:10982): (solute carrier family 25 member 12) This gene encodes a calcium-binding mitochondrial carrier protein. The encoded protein localizes to the mitochondria and is involved in the exchange of aspartate for glutamate across the inner mitochondrial membrane. Polymorphisms in this gene may be associated with autism, and mutations in this gene may also be a cause of global cerebral hypomyelination. Alternatively spliced transcript variants have been observed for this gene. [provided by RefSeq, Apr 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC25A12	NM_003705.5	c.1969C>T	p.Leu657Phe	missense_variant	18/18	ENST00000422440.7	NP_003696.2
SLC25A12	XM_047446142.1	c.1696C>T	p.Leu566Phe	missense_variant	16/16		XP_047302098.1
SLC25A12	NR_047549.2	n.1883C>T		non_coding_transcript_exon_variant	17/17

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC25A12	ENST00000422440.7	c.1969C>T	p.Leu657Phe	missense_variant	18/18	1	NM_003705.5	ENSP00000388658.2
SLC25A12	ENST00000263812.8	n.*1589C>T		non_coding_transcript_exon_variant	17/17	2		ENSP00000263812.4
SLC25A12	ENST00000472070.1	n.1379C>T		non_coding_transcript_exon_variant	3/3	2
SLC25A12	ENST00000263812.8	n.*1589C>T		3_prime_UTR_variant	17/17	2		ENSP00000263812.4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 19, 2023

This sequence change replaces leucine, which is neutral and non-polar, with phenylalanine, which is neutral and non-polar, at codon 657 of the SLC25A12 protein (p.Leu657Phe). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with SLC25A12-related conditions. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.39
BayesDel_addAF	Pathogenic	0.18	D
BayesDel_noAF	Uncertain	0.020
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.46	T
Eigen	Uncertain	0.65
Eigen_PC	Pathogenic	0.75
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Benign	0.067	D
MetaRNN	Uncertain	0.61	D
MetaSVM	Uncertain	0.11	D
MutationAssessor	Uncertain	2.0	M
PrimateAI	Uncertain	0.58	T
PROVEAN	Uncertain	-2.6	D
REVEL	Uncertain	0.45
Sift	Benign	0.11	T
Sift4G	Benign	0.12	T
Polyphen		0.88	P
Vest4		0.62
MutPred		0.56		Loss of helix (P = 0.0093);
MVP		0.67
MPC		1.6
ClinPred		0.98	D
GERP RS		6.2
Varity_R		0.44
gMVP		0.85

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-172641852;