1-1223352-C-A

Position:

• chr1-1223352-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1 PM2

The NM_016176.6(SDF4):​c.448G>T​(p.Val150Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000000687 in 1,455,898 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: SDF4 NM_016176.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.91

Genes affected

SDF4 (HGNC:24188): (stromal cell derived factor 4) This gene encodes a stromal cell derived factor that is a member of the CREC protein family. The encoded protein contains six EF-hand motifs and calcium-binding motifs. This protein localizes to the Golgi lumen and may be involved in regulating calcium dependent cellular activities. [provided by RefSeq, Sep 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM1: In a binding_site (size 0) in uniprot entity CAB45_HUMAN
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SDF4	NM_016176.6	c.448G>T	p.Val150Leu	missense_variant	4/7	ENST00000360001.12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SDF4	ENST00000360001.12	c.448G>T	p.Val150Leu	missense_variant	4/7	1	NM_016176.6	P1
SDF4	ENST00000263741.12	c.448G>T	p.Val150Leu	missense_variant	4/7	1
SDF4	ENST00000403997.2	c.274G>T	p.Val92Leu	missense_variant	3/5	3
SDF4	ENST00000465727.5	c.469G>T	p.Val157Leu	missense_variant, NMD_transcript_variant	4/7	2

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome AF: 6.87e-7 AC: 1 AN: 1455898 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 723964

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.: 34

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 10, 2023

The c.469G>T (p.V157L) alteration is located in exon 4 (coding exon 3) of the SDF4 gene. This alteration results from a G to T substitution at nucleotide position 469, causing the valine (V) at amino acid position 157 to be replaced by a leucine (L). 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	0.60
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.0
CADD	Benign	21
DANN	Benign	0.97
DEOGEN2	Benign	0.38	T;.
Eigen	Benign	-0.19
Eigen_PC	Benign	-0.16
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.94	D;D
M_CAP	Uncertain	0.17	D
MetaRNN	Uncertain	0.59	D;D
MetaSVM	Uncertain	-0.17	T
MutationAssessor	Benign	1.1	L;L
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.63	T
PROVEAN	Benign	-1.6	N;N
REVEL	Uncertain	0.44
Sift	Benign	0.18	T;T
Sift4G	Benign	0.17	T;T
Polyphen		0.25	B;B
Vest4		0.82
MutPred		0.52		Loss of disorder (P = 0.2292);Loss of disorder (P = 0.2292);
MVP		0.85
MPC		0.43
ClinPred		0.79	D
GERP RS		4.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.17
gMVP		0.50

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs764634276; hg19: chr1-1158732;