Genetic Variant NM_199344.3:c.427T>G (chr1-168239144-T-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_199344.3(SFT2D2):c.427T>G(p.Phe143Val) variant causes a missense change. The variant allele was found at a frequency of 0.000000687 in 1,455,114 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. F143I) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

SFT2D2
NM_199344.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.25

Variant links:

Genes affected

SFT2D2 (HGNC:25140): (SFT2 domain containing 2) Predicted to be involved in protein transport and vesicle-mediated transport. Located in extracellular exosome. [provided by Alliance of Genome Resources, Apr 2022]

SFT2D2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.925

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SFT2D2	NM_199344.3 link	c.427T>G	p.Phe143Val	missense_variant	Exon 7 of 8	ENST00000271375.7	NP_955376.1	O95562

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SFT2D2	ENST00000271375.7 link	c.427T>G	p.Phe143Val	missense_variant	Exon 7 of 8	1	NM_199344.3	ENSP00000271375.3	O95562
SFT2D2	ENST00000367829.5 link	c.*18T>G		3_prime_UTR_variant	Exon 6 of 6	5		ENSP00000356803.1	Q5TIH2
SFT2D2	ENST00000630869.1 link	c.*18T>G		3_prime_UTR_variant	Exon 6 of 7	4		ENSP00000486492.1	Q5TIH2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.87e-7

AC:

AN:

1455114

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

724482

show subpopulations

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:

0.0000166

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 27, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.427T>G (p.F143V) alteration is located in exon 7 (coding exon 7) of the SFT2D2 gene. This alteration results from a T to G substitution at nucleotide position 427, causing the phenylalanine (F) at amino acid position 143 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

Pathogenic

0.89

BayesDel_addAF

Benign

-0.042

BayesDel_noAF

Benign

-0.30

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.26

Eigen

Uncertain

0.24

Eigen_PC

Uncertain

0.33

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.86

M_CAP

Benign

0.025

MetaRNN

Pathogenic

0.92

MetaSVM

Benign

-0.92

MutationAssessor

Benign

1.9

PrimateAI

Uncertain

0.60

PROVEAN

Uncertain

-3.9

REVEL

Benign

0.28

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0030

Polyphen

0.25

Vest4

0.76

MutPred

0.89

Loss of helix (P = 0.0558);

MVP

0.33

MPC

0.56

ClinPred

0.97

GERP RS

4.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.1

Varity_R

0.54

gMVP

0.95

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over