2-171787612-A-T

Variant names:

• chr2-171787612-A-T
• rs142891505
• NM_003705.5:c.1794T>A

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PVS1_Strong PM2

The NM_003705.5(SLC25A12):​c.1794T>A​(p.Tyr598*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. Y598Y) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SLC25A12 NM_003705.5 stop_gained
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0370
• Publications: 1 publications found

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]

SLC25A12 Gene-Disease associations (from GenCC):

• developmental and epileptic encephalopathy, 39

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet
• mitochondrial disease

  Inheritance: AR Classification: MODERATE Submitted by: ClinGen

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most 50 bp of the penultimate exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.119 CDS is truncated, and there are 0 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003705.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC25A12	NM_003705.5	MANE Select	c.1794T>A	p.Tyr598*	stop_gained	Exon 17 of 18	NP_003696.2
	SLC25A12	NR_047549.2		n.1708T>A		non_coding_transcript_exon	Exon 16 of 17

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC25A12	ENST00000422440.7	TSL:1 MANE Select	c.1794T>A	p.Tyr598*	stop_gained	Exon 17 of 18	ENSP00000388658.2	O75746-1
	SLC25A12	ENST00000958780.1		c.1971T>A	p.Tyr657*	stop_gained	Exon 19 of 20	ENSP00000628839.1
	SLC25A12	ENST00000958781.1		c.1881T>A	p.Tyr627*	stop_gained	Exon 18 of 19	ENSP00000628840.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 2

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.47	D
BayesDel_noAF	Pathogenic	0.44
CADD	Pathogenic	35
DANN	Uncertain	0.99
Eigen	Uncertain	0.24
Eigen_PC	Benign	-0.0082
FATHMM_MKL	Benign	0.52	D
PhyloP100		0.037
Vest4		0.91
GERP RS		-3.0
Mutation Taster		=2/198	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs142891505; hg19: chr2-172644122;