1-168239144-T-G

Variant names:

• chr1-168239144-T-G
• rs1314751007
• NM_199344.3:c.427T>G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_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
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.25

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]

ACMG classification

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	c.427T>G	p.Phe143Val	missense_variant	Exon 7 of 8	ENST00000271375.7	NP_955376.1

Ensembl

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

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.87e-7 AC: 1 AN: 1455114 Hom.: 0 Cov.: 28 AF XY: 0.00000138 AC XY: 1 AN XY: 724482

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.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

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	T
BayesDel_noAF	Benign	-0.30
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Benign	0.26	T
Eigen	Uncertain	0.24
Eigen_PC	Uncertain	0.33
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.86	D
M_CAP	Benign	0.025	D
MetaRNN	Pathogenic	0.92	D
MetaSVM	Benign	-0.92	T
MutationAssessor	Benign	1.9	L
PrimateAI	Uncertain	0.60	T
PROVEAN	Uncertain	-3.9	D
REVEL	Benign	0.28
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0030	D
Polyphen		0.25	B
Vest4		0.76
MutPred		0.89		Loss of helix (P = 0.0558);
MVP		0.33
MPC		0.56
ClinPred		0.97	D
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

Other links and lift over

dbSNP: rs1314751007; hg19: chr1-168208382;