chr17-75273484-G-T

Position:

• chr17-75273484-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001126121.2(SLC25A19):​c.930C>A​(p.Phe310Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,780 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: SLC25A19 NM_001126121.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.671

Genes affected

SLC25A19 (HGNC:14409): (solute carrier family 25 member 19) This gene encodes a mitochondrial protein that is a member of the solute carrier family. Although this protein was initially thought to be the mitochondrial deoxynucleotide carrier involved in the uptake of deoxynucleotides into the matrix of the mitochondria, further studies have demonstrated that this protein instead functions as the mitochondrial thiamine pyrophosphate carrier, which transports thiamine pyrophosphates into mitochondria. Mutations in this gene cause microcephaly, Amish type, a metabolic disease that results in severe congenital microcephaly, severe 2-ketoglutaric aciduria, and death within the first year. Multiple alternatively spliced variants, encoding the same protein, have been identified for this gene. [provided by RefSeq, Jul 2008]

MIF4GD-DT (HGNC:55335): (MIF4GD divergent transcript)

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1254842).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLC25A19	NM_001126121.2	c.930C>A	p.Phe310Leu	missense_variant	8/8	ENST00000416858.7
MIF4GD-DT	NR_036520.1	n.2186G>T		non_coding_transcript_exon_variant	1/1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC25A19	ENST00000416858.7	c.930C>A	p.Phe310Leu	missense_variant	8/8	1	NM_001126121.2	P1
MIF4GD-DT	ENST00000585075.1	n.2116G>T		non_coding_transcript_exon_variant	1/1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461780 Hom.: 0 Cov.: 63 AF XY: 0.00000275 AC XY: 2 AN XY: 727200

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: 0.00000270

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 34

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Amish lethal microcephaly Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.60
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.40
CADD	Benign	19
DANN	Benign	0.92
DEOGEN2	Benign	0.094	.;T;T;T;T;T
Eigen	Benign	-0.41
Eigen_PC	Benign	-0.14
FATHMM_MKL	Uncertain	0.80	D
LIST_S2	Benign	0.43	T;.;.;.;.;T
M_CAP	Benign	0.0062	T
MetaRNN	Benign	0.13	T;T;T;T;T;T
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	-0.86	.;N;N;N;N;N
MutationTaster	Benign	0.91	N;N;N;N;N;N
PrimateAI	Benign	0.44	T
PROVEAN	Benign	0.26	N;N;N;N;N;.
REVEL	Benign	0.20
Sift	Benign	0.40	T;T;T;T;T;.
Sift4G	Benign	1.0	T;T;T;T;T;T
Polyphen		0.0010	.;B;B;B;B;B
Vest4		0.052
MutPred		0.71		.;Gain of disorder (P = 0.2106);Gain of disorder (P = 0.2106);Gain of disorder (P = 0.2106);Gain of disorder (P = 0.2106);Gain of disorder (P = 0.2106);
MVP		0.043
MPC		0.17
ClinPred		0.59	D
GERP RS		5.5
Varity_R		0.043
gMVP		0.54

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

LitVar

Other links and lift over

dbSNP: rs886053391; hg19: chr17-73269565;