3-136855131-C-T

Variant names:

• chr3-136855131-C-T
• rs1275409451
• NM_025246.3:c.671C>T

Variant summary

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

The NM_025246.3(SLC35G2):​c.671C>T​(p.Ala224Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000657 in 152,192 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: SLC35G2 NM_025246.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.67

Genes affected

SLC35G2 (HGNC:28480): (solute carrier family 35 member G2) Located in Golgi apparatus and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

NCK1-DT (HGNC:49645): (NCK1 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=0.08064479).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC35G2	NM_025246.3	c.671C>T	p.Ala224Val	missense_variant	Exon 2 of 2	ENST00000446465.3	NP_079522.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC35G2	ENST00000446465.3	c.671C>T	p.Ala224Val	missense_variant	Exon 2 of 2	1	NM_025246.3	ENSP00000400839.2

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152192 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 39

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152192 Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1 AN XY: 74358

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000712 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Nov 17, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.671C>T (p.A224V) alteration is located in exon 2 (coding exon 1) of the SLC35G2 gene. This alteration results from a C to T substitution at nucleotide position 671, causing the alanine (A) at amino acid position 224 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.064
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.51
CADD	Benign	16
DANN	Benign	0.85
DEOGEN2	Benign	0.013	T;T
Eigen	Benign	-0.20
Eigen_PC	Benign	0.074
FATHMM_MKL	Uncertain	0.81	D
LIST_S2	Benign	0.82	.;T
M_CAP	Benign	0.0021	T
MetaRNN	Benign	0.081	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.55	N;N
PrimateAI	Uncertain	0.52	T
PROVEAN	Benign	1.4	N;N
REVEL	Benign	0.039
Sift	Benign	1.0	T;T
Sift4G	Benign	1.0	T;T
Polyphen		0.0	B;B
Vest4		0.078
MutPred		0.39		Loss of sheet (P = 0.1907);Loss of sheet (P = 0.1907);
MVP		0.46
MPC		0.12
ClinPred		0.32	T
GERP RS		5.7
Varity_R		0.043
gMVP		0.48

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: rs1275409451; hg19: chr3-136573973;