20-1125508-A-G

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6_Moderate

The NM_006814.5(PSMF1):c.140A>G(p.Asn47Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000933 in 1,608,228 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000069 (0 hom.)
• Consequence: PSMF1 NM_006814.5 missense
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.601

Genes affected

PSMF1 (HGNC:9571): (proteasome inhibitor subunit 1) The 26S proteasome is a multicatalytic proteinase complex with a highly ordered structure composed of 2 complexes, a 20S core and a 19S regulator. The 20S core 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. The 19S regulator is composed of a base, which contains 6 ATPase subunits and 2 non-ATPase subunits, and a lid, which contains up to 10 non-ATPase 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 protein that inhibits the activation of the proteasome by the 11S and 19S regulators. Alternative transcript variants have been identified for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.016989082).
• BP6: Variant 20-1125508-A-G is Benign according to our data. Variant chr20-1125508-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 2371056.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PSMF1	NM_006814.5	c.140A>G	p.Asn47Ser	missense_variant	2/7	ENST00000335877.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PSMF1	ENST00000335877.11	c.140A>G	p.Asn47Ser	missense_variant	2/7	1	NM_006814.5	P1

Frequencies

GnomAD3 genomes AF: 0.0000329 AC: 5 AN: 152152 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000196

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000122 AC: 3 AN: 245534 Hom.: 0 AF XY: 0.0000226 AC XY: 3 AN XY: 132786

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000599

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000336

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000687 AC: 10 AN: 1456076 Hom.: 0 Cov.: 30 AF XY: 0.00000828 AC XY: 6 AN XY: 724356

Gnomad4 AFR exome AF: 0.0000301

Gnomad4 AMR exome AF: 0.0000919

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000117

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000361

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.0000329 AC: 5 AN: 152152 Hom.: 0 Cov.: 32 AF XY: 0.0000538 AC XY: 4 AN XY: 74338

Gnomad4 AFR AF: 0.0000483

Gnomad4 AMR AF: 0.000196

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000712 Hom.: 0

Bravo AF: 0.0000982

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 01, 2022

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.054
BayesDel_addAF	Benign	-0.47	T
BayesDel_noAF	Benign	-0.73
Cadd	Benign	0.13
Dann	Benign	0.73
DEOGEN2	Benign	0.0037	T;T;T;T
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.031	N
LIST_S2	Benign	0.73	T;T;T;.
M_CAP	Benign	0.0019	T
MetaRNN	Benign	0.017	T;T;T;T
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	-1.0	N;.;.;N
MutationTaster	Benign	1.0	N;N;N;N;N
PrimateAI	Benign	0.25	T
PROVEAN	Benign	-0.050	N;N;N;N
REVEL	Benign	0.047
Sift	Benign	0.84	T;T;T;T
Sift4G	Benign	0.81	T;T;T;T
Polyphen		0.0	B;.;B;B
Vest4		0.063
MutPred		0.17		Gain of phosphorylation at N47 (P = 0.068);Gain of phosphorylation at N47 (P = 0.068);Gain of phosphorylation at N47 (P = 0.068);Gain of phosphorylation at N47 (P = 0.068);
MVP		0.11
MPC		0.060
ClinPred		0.025	T
GERP RS		-6.4
Varity_R		0.10
gMVP		0.12

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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

Other links and lift over

dbSNP: rs950052320; hg19: chr20-1106151;