Genetic Variant PSMB7:p.Thr113Ala (chr9-124412410-T-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_002799.4(PSMB7):c.337A>G(p.Thr113Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,828 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

PSMB7
NM_002799.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.02

Variant links:

Genes affected

PSMB7 (HGNC:9544): (proteasome 20S subunit beta 7) The proteasome is a multicatalytic proteinase complex with a highly ordered ring-shaped 20S core structure. The core structure is composed of 4 rings of 28 non-identical subunits; 2 rings are composed of 7 alpha subunits and 2 rings are composed of 7 beta subunits. Proteasomes are distributed throughout eukaryotic cells at a high concentration and cleave peptides in an ATP/ubiquitin-dependent process in a non-lysosomal pathway. The encoded protein is a member of the proteasome B-type family, also known as the T1B family, and is a 20S core beta subunit in the proteasome. Expression of this catalytic subunit is downregulated by gamma interferon, and proteolytic processing is required to generate a mature subunit. A pseudogene of this gene is located on the long arm of chromosome 14. [provided by RefSeq, Jul 2012]

PSMB7 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 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
PSMB7	NM_002799.4 link	c.337A>G	p.Thr113Ala	missense_variant	Exon 4 of 8	ENST00000259457.8	NP_002790.1	Q99436-1E9KL30

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PSMB7	ENST00000259457.8 link	c.337A>G	p.Thr113Ala	missense_variant	Exon 4 of 8	1	NM_002799.4	ENSP00000259457.3	Q99436-1
PSMB7	ENST00000441097.1 link	c.337A>G	p.Thr113Ala	missense_variant	Exon 4 of 7	5		ENSP00000393157.1	Q5TBG5
PSMB7	ENST00000466951.1 link	n.452A>G		non_coding_transcript_exon_variant	Exon 4 of 4	3
PSMB7	ENST00000498485.5 link	n.454A>G		non_coding_transcript_exon_variant	Exon 4 of 7	5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251424

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135894

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461828

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727214

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

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.:

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 28, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.337A>G (p.T113A) alteration is located in exon 4 (coding exon 4) of the PSMB7 gene. This alteration results from a A to G substitution at nucleotide position 337, causing the threonine (T) at amino acid position 113 to be replaced by an alanine (A). 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

0.30

BayesDel_addAF

Uncertain

0.086

BayesDel_noAF

Uncertain

0.070

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.14

T;T

Eigen

Uncertain

0.56

Eigen_PC

Uncertain

0.58

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.97

D;D

M_CAP

Benign

0.016

MetaRNN

Uncertain

0.72

D;D

MetaSVM

Benign

-0.93

MutationAssessor

Uncertain

2.9

M;.

PrimateAI

Pathogenic

0.81

PROVEAN

Pathogenic

-4.6

D;D

REVEL

Uncertain

0.41

Sift

Uncertain

0.013

D;D

Sift4G

Uncertain

0.026

D;.

Polyphen

0.40

B;.

Vest4

0.78

MutPred

0.55

Gain of MoRF binding (P = 0.1089);Gain of MoRF binding (P = 0.1089);

MVP

0.75

MPC

0.50

ClinPred

0.96

GERP RS

4.9

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

2.7

Varity_R

0.86

gMVP

0.89

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