Genetic Variant NM_020123.4:c.1573A>T (chr10-96527465-T-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_020123.4(TM9SF3):c.1573A>T(p.Thr525Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,064 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T525A) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

TM9SF3
NM_020123.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.92

Publications

0 publications found

Variant links:

Genes affected

TM9SF3 (HGNC:21529): (transmembrane 9 superfamily member 3) Predicted to be involved in protein localization to membrane. Predicted to be located in exocytic vesicle. Predicted to be active in membrane. [provided by Alliance of Genome Resources, Apr 2022]

TM9SF3 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TM9SF3	NM_020123.4 link	c.1573A>T	p.Thr525Ser	missense_variant	Exon 13 of 15	ENST00000371142.9	NP_064508.3	Q9HD45A0A024QYS2
TM9SF3	XM_011539976.3 link	c.1627A>T	p.Thr543Ser	missense_variant	Exon 13 of 15		XP_011538278.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TM9SF3	ENST00000371142.9 link	c.1573A>T	p.Thr525Ser	missense_variant	Exon 13 of 15	1	NM_020123.4	ENSP00000360184.4	Q9HD45
TM9SF3	ENST00000485093.1 link	n.224A>T		non_coding_transcript_exon_variant	Exon 2 of 4	5
TM9SF3	ENST00000649367.1 link	n.1911A>T		non_coding_transcript_exon_variant	Exon 13 of 15

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1459064

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

725766

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33372

American (AMR)

AF:

0.00

AC:

AN:

44484

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26030

East Asian (EAS)

AF:

0.00

AC:

AN:

39594

South Asian (SAS)

AF:

0.00

AC:

AN:

85790

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53316

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5754

European-Non Finnish (NFE)

AF:

9.01e-7

AC:

AN:

1110482

Other (OTH)

AF:

0.00

AC:

AN:

60242

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.275

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.83

BayesDel_addAF

Uncertain

0.093

BayesDel_noAF

Benign

-0.10

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.17

Eigen

Uncertain

0.61

Eigen_PC

Uncertain

0.64

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.97

M_CAP

Benign

0.021

MetaRNN

Uncertain

0.72

MetaSVM

Benign

-0.93

MutationAssessor

Benign

1.7

PhyloP100

7.9

PrimateAI

Pathogenic

0.81

PROVEAN

Uncertain

-3.0

REVEL

Uncertain

0.30

Sift

Uncertain

0.0020

Sift4G

Benign

0.097

Polyphen

0.99

Vest4

0.68

MutPred

0.73

Gain of glycosylation at T525 (P = 0.0377);

MVP

0.30

MPC

1.8

ClinPred

0.98

GERP RS

5.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.54

gMVP

0.63

Mutation Taster

=32/68

disease causing

(source)

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

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NM_020123.4:c.1573A>T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over