11-791939-C-T

Variant names:

• chr11-791939-C-T
• rs1554965239
• NM_001191061.2:c.948G>A

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_001191061.2(SLC25A22):​c.948G>A​(p.Gly316Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign 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. G316G) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 34)
• Consequence: SLC25A22 NM_001191061.2 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.820
• Publications: 0 publications found

Genes affected

SLC25A22 (HGNC:19954): (solute carrier family 25 member 22) This gene encodes a mitochondrial glutamate carrier. Mutations in this gene are associated with early infantile epileptic encephalopathy. Multiple alternatively spliced variants, encoding the same protein, have been identified.[provided by RefSeq, Jul 2010]

SLC25A22 Gene-Disease associations (from GenCC):

• genetic developmental and epileptic encephalopathy

  Inheritance: AR, AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• developmental and epileptic encephalopathy, 3

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, G2P
• early myoclonic encephalopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• malignant migrating partial seizures of infancy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.46).
• BP7: Synonymous conserved (PhyloP=0.82 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001191061.2. 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
	SLC25A22	NM_001191061.2	MANE Select	c.948G>A	p.Gly316Gly	synonymous	Exon 10 of 10	NP_001177990.1	Q9H936
	SLC25A22	NM_001425334.1		c.1023G>A	p.Gly341Gly	synonymous	Exon 10 of 10	NP_001412263.1
	SLC25A22	NM_001425335.1		c.987G>A	p.Gly329Gly	synonymous	Exon 10 of 10	NP_001412264.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC25A22	ENST00000628067.3	TSL:1 MANE Select	c.948G>A	p.Gly316Gly	synonymous	Exon 10 of 10	ENSP00000486058.1	Q9H936
	SLC25A22	ENST00000320230.9	TSL:1	c.948G>A	p.Gly316Gly	synonymous	Exon 10 of 10	ENSP00000322020.5	Q9H936
	SLC25A22	ENST00000860087.1		c.1023G>A	p.Gly341Gly	synonymous	Exon 10 of 10	ENSP00000530146.1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 34

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.46
CADD	Benign	7.5
DANN	Benign	0.82
PhyloP100		0.82

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs1554965239; hg19: chr11-791939;