Genetic Variant NM_001256748.3:c.1001T>G (chr3-8619995-A-C) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_001256748.3(SSUH2):c.1001T>G(p.Ile334Ser) variant causes a missense change. The variant allele was found at a frequency of 0.0000103 in 1,461,784 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

SSUH2
NM_001256748.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.27

Publications

0 publications found

Variant links:

Genes affected

SSUH2 (HGNC:24809): (ssu-2 homolog) Involved in odontogenesis. Located in cytoplasm and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

SSUH2 Gene-Disease associations (from GenCC):

dentin dysplasia type I
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

SSUH2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BS2

High AC in GnomAdExome4 at 15 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SSUH2	NM_001256748.3 link	c.1001T>G	p.Ile334Ser	missense_variant	Exon 12 of 12	ENST00000544814.7	NP_001243677.1	Q9Y2M2-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SSUH2	ENST00000544814.7 link	c.1001T>G	p.Ile334Ser	missense_variant	Exon 12 of 12	2	NM_001256748.3	ENSP00000439378.1		Q9Y2M2-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1461784

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

727192

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33472

American (AMR)

AF:

0.00

AC:

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000135

AC:

AN:

1111948

Other (OTH)

AF:

0.00

AC:

AN:

60382

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.448

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

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

Feb 22, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.935T>G (p.I312S) alteration is located in exon 12 (coding exon 9) of the SSUH2 gene. This alteration results from a T to G substitution at nucleotide position 935, causing the isoleucine (I) at amino acid position 312 to be replaced by a serine (S). 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

0.85

BayesDel_addAF

Benign

0.0016

BayesDel_noAF

Benign

-0.24

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.19

.;T;T

Eigen

Benign

0.14

Eigen_PC

Benign

0.17

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.77

T;.;T

M_CAP

Benign

0.050

MetaRNN

Uncertain

0.56

D;D;D

MetaSVM

Benign

-0.83

MutationAssessor

Uncertain

2.5

.;M;M

PhyloP100

4.3

PrimateAI

Uncertain

0.49

PROVEAN

Pathogenic

-5.1

D;D;D

REVEL

Uncertain

0.42

Sift

Uncertain

0.0010

D;D;D

Sift4G

Uncertain

0.0020

D;D;D

Polyphen

0.28

.;B;B

Vest4

0.50

MutPred

0.74

.;Loss of sheet (P = 0.0104);Loss of sheet (P = 0.0104);

MVP

0.30

MPC

0.24

ClinPred

0.99

GERP RS

5.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.71

gMVP

0.86

Mutation Taster

=90/10

polymorphism

(source)

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

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NM_001256748.3:c.1001T>G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over