14-23026279-C-T

Variant names:

• chr14-23026279-C-T
• rs2139909979
• NM_002797.5:c.602G>A

Variant summary

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

The NM_002797.5(PSMB5):​c.602G>A​(p.Gly201Asp) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 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. G201V) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 30)
• Consequence: PSMB5 NM_002797.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.47
• Publications: 0 publications found

Genes affected

PSMB5 (HGNC:9542): (proteasome 20S subunit beta 5) 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. An essential function of a modified proteasome, the immunoproteasome, is the processing of class I MHC peptides. This gene encodes a member of the proteasome B-type family, also known as the T1B family, that is a 20S core beta subunit in the proteasome. This catalytic subunit is not present in the immunoproteasome and is replaced by catalytic subunit 3i (proteasome beta 8 subunit). Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2009]

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002797.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PSMB5	NM_002797.5	MANE Select	c.602G>A	p.Gly201Asp	missense	Exon 3 of 3	NP_002788.1	P28074-1
	PSMB5	NM_001130725.1		c.293G>A	p.Gly98Asp	missense	Exon 3 of 3	NP_001124197.1	P28074-3
	PSMB5	NM_001144932.3		c.*75G>A		3_prime_UTR	Exon 4 of 4	NP_001138404.1	P28074-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PSMB5	ENST00000361611.11	TSL:1 MANE Select	c.602G>A	p.Gly201Asp	missense	Exon 3 of 3	ENSP00000355325.6	P28074-1
	PSMB5	ENST00000425762.2	TSL:1	c.293G>A	p.Gly98Asp	missense	Exon 3 of 3	ENSP00000395206.2	P28074-3
	PSMB5	ENST00000493471.2	TSL:1	c.*75G>A		3_prime_UTR	Exon 4 of 4	ENSP00000452424.1	P28074-2

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 30

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.51
BayesDel_addAF	Uncertain	0.040	T
BayesDel_noAF	Benign	-0.18
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.20	T
Eigen	Uncertain	0.20
Eigen_PC	Uncertain	0.30
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.97	D
M_CAP	Benign	0.019	T
MetaRNN	Uncertain	0.57	D
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.6	M
PhyloP100		4.5
PrimateAI	Pathogenic	0.82	D
PROVEAN	Pathogenic	-5.4	D
REVEL	Benign	0.15
Sift	Uncertain	0.022	D
Sift4G	Benign	0.083	T
Polyphen		0.13	B
Vest4		0.67
MutPred		0.58		Gain of catalytic residue at V197 (P = 0.002)
MVP		0.56
MPC		0.85
ClinPred		0.99	D
GERP RS		5.1
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.90
gMVP		0.83
Mutation Taster		=24/76	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs2139909979; hg19: chr14-23495488;