chr17-67340940-A-C

Position:

• chr17-67340940-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PVS1_Moderate PM2 PP5

The NM_002816.5(PSMD12):​c.1274T>G​(p.Leu425Ter) variant causes a stop gained change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 31)
• Consequence: PSMD12 NM_002816.5 stop_gained
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 8.88

Genes affected

PSMD12 (HGNC:9557): (proteasome 26S subunit, non-ATPase 12) 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 non-ATPase subunit of the 19S regulator. A pseudogene has been identified on chromosome 3. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.0708 CDS is truncated, and there are 2 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 17-67340940-A-C is Pathogenic according to our data. Variant chr17-67340940-A-C is described in ClinVar as [Pathogenic]. Clinvar id is 427780.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr17-67340940-A-C is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PSMD12	NM_002816.5	c.1274T>G	p.Leu425Ter	stop_gained	11/11	ENST00000356126.8
PSMD12	NM_174871.4	c.1214T>G	p.Leu405Ter	stop_gained	10/10
PSMD12	NM_001316341.2	c.1097T>G	p.Leu366Ter	stop_gained	13/13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PSMD12	ENST00000356126.8	c.1274T>G	p.Leu425Ter	stop_gained	11/11	1	NM_002816.5	P1
PSMD12	ENST00000584008.5	c.*1429T>G		3_prime_UTR_variant, NMD_transcript_variant	13/13	1
PSMD12	ENST00000357146.4	c.1214T>G	p.Leu405Ter	stop_gained	10/10	2
PSMD12	ENST00000577724.1			downstream_gene_variant		2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 31

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Stankiewicz-Isidor syndrome Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jun 08, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.65
CADD	Pathogenic	37
DANN	Uncertain	0.99
Eigen	Pathogenic	0.87
Eigen_PC	Pathogenic	0.73
FATHMM_MKL	Pathogenic	0.99	D
MutationTaster	Benign	1.0	D;D
Vest4		0.34
GERP RS		4.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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

Other links and lift over

dbSNP: rs1114167443; hg19: chr17-65337056;