rs774532404

Positions:

• chr3-66262051-G-A
• chr3-66262051-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001379210.1(SLC25A26):​c.301G>A​(p.Val101Ile) variant causes a missense, splice region change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: SLC25A26 NM_001379210.1 missense, splice_region
• Scores: Splicing: ADA: 0.01980
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.60

Genes affected

SLC25A26 (HGNC:20661): (solute carrier family 25 member 26) This gene is a member of the mitochondrial carrier family which includes nuclear-encoded transporters localized on the inner mitochondrial membranes. Members of the family transport important small molecules across the mitochondrial inner membrane. This protein is involved in the transport of S-adenosylmethionine (SAM) into the mitochondria. Mutations in this gene are associated with combined oxidative phosphorylation deficiency 28. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Apr 2017]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.3428674).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC25A26	NM_001379210.1	c.301G>A	p.Val101Ile	missense_variant, splice_region_variant	4/10	ENST00000354883.11	NP_001366139.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC25A26	ENST00000354883.11	c.301G>A	p.Val101Ile	missense_variant, splice_region_variant	4/10	2	NM_001379210.1	ENSP00000346955	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1405808 Hom.: 0 Cov.: 26 AF XY: 0.00 AC XY: 0 AN XY: 696308

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 12, 2017

Lines of evidence used in support of classification: UNCERTAIN: Alteration(s) of Uncertain Clinical Significance Detected -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.026	T
BayesDel_noAF	Benign	-0.28
CADD	Benign	19
DANN	Uncertain	0.99
DEOGEN2	Benign	0.16	T;.;.
Eigen	Uncertain	0.38
Eigen_PC	Uncertain	0.34
FATHMM_MKL	Uncertain	0.93	D
M_CAP	Benign	0.039	D
MetaRNN	Benign	0.34	T;T;T
MetaSVM	Benign	-0.92	T
MutationAssessor	Benign	1.3	L;.;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Benign	0.40	T
PROVEAN	Benign	-0.70	N;N;.
REVEL	Benign	0.24
Sift	Benign	0.084	T;T;.
Sift4G	Benign	0.13	T;T;T
Polyphen		0.0010	B;.;.
Vest4		0.17
MutPred		0.41		Gain of catalytic residue at V101 (P = 0.0544);.;.;
MVP		0.17
MPC		0.023
ClinPred		0.61	D
GERP RS		3.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.070
gMVP		0.72

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.020
dbscSNV1_RF	Benign	0.21
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs774532404; hg19: chr3-66312475;