Genetic Variant SSC4D:p.Ala334Thr (chr7-76393851-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_080744.2(SSC4D):c.1000G>A(p.Ala334Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

SSC4D
NM_080744.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -3.43

Variant links:

Genes affected

SSC4D (HGNC:14461): (scavenger receptor cysteine rich family member with 4 domains) The scavenger receptor cysteine-rich (SRCR) superfamily is an ancient and highly conserved group of cell surface and/or secreted proteins, some of which are involved in the development of the immune system and the regulation of both innate and adaptive immune responses. Group B SRCR domains usually contain 8 regularly spaced cysteines that give rise to a well-defined intradomain disulfide-bond pattern.[supplied by OMIM, Apr 2004]

SSC4D links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.039048523).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SSC4D	NM_080744.2 link	c.1000G>A	p.Ala334Thr	missense_variant	Exon 8 of 11	ENST00000275560.4	NP_542782.1	Q8WTU2-1
SSC4D	XM_024446664.2 link	c.1087G>A	p.Ala363Thr	missense_variant	Exon 9 of 12		XP_024302432.1
SSC4D	XM_017011750.2 link	c.493G>A	p.Ala165Thr	missense_variant	Exon 5 of 8		XP_016867239.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SSC4D	ENST00000275560.4 link	c.1000G>A	p.Ala334Thr	missense_variant	Exon 8 of 11	1	NM_080744.2	ENSP00000275560.3		Q8WTU2-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0;AS_VQSR

AF:

0.00

AC:

AN:

1451772

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

721308

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:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 13, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1000G>A (p.A334T) alteration is located in exon 8 (coding exon 7) of the SSC4D gene. This alteration results from a G to A substitution at nucleotide position 1000, causing the alanine (A) at amino acid position 334 to be replaced by a threonine (T). 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

0.074

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.82

CADD

Benign

0.30

DANN

Benign

0.92

DEOGEN2

Benign

0.068

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.062

LIST_S2

Benign

0.43

M_CAP

Benign

0.016

MetaRNN

Benign

0.039

MetaSVM

Benign

-0.89

MutationAssessor

Benign

0.49

PrimateAI

Uncertain

0.61

PROVEAN

Benign

0.26

REVEL

Benign

0.049

Sift

Benign

0.62

Sift4G

Benign

0.63

Polyphen

0.0010

Vest4

0.044

MutPred

0.34

Gain of glycosylation at A334 (P = 0.018);

MVP

0.055

MPC

0.55

ClinPred

0.052

GERP RS

-2.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.052

gMVP

0.21

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