14-35292481-C-T

Position:

• chr14-35292481-C-T

Variant summary

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

The NM_002791.3(PSMA6):​c.5C>T​(p.Ser2Phe) variant causes a missense change. The variant allele was found at a frequency of 0.00000274 in 1,461,334 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: PSMA6 NM_002791.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.43

Genes affected

PSMA6 (HGNC:9535): (proteasome 20S subunit alpha 6) 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 peptidase T1A family, that is a 20S core alpha subunit. Multiple transcript variants encoding several different isoforms have been found for this gene. A pseudogene has been identified on the Y chromosome. [provided by RefSeq, Aug 2013]

ENSG00000258790 (HGNC:):

ACMG classification

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/exons	MANE	Protein	UniProt
PSMA6	NM_002791.3	c.5C>T	p.Ser2Phe	missense_variant	1/7	ENST00000261479.9	NP_002782.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PSMA6	ENST00000261479.9	c.5C>T	p.Ser2Phe	missense_variant	1/7	1	NM_002791.3	ENSP00000261479.4
ENSG00000258790	ENST00000557565.1	n.*891+13763C>T		intron_variant		2		ENSP00000454657.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461334 Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2 AN XY: 726976

Gnomad4 AFR exome AF: 0.00

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: 0.00000360

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 07, 2023

The c.5C>T (p.S2F) alteration is located in exon 1 (coding exon 1) of the PSMA6 gene. This alteration results from a C to T substitution at nucleotide position 5, causing the serine (S) at amino acid position 2 to be replaced by a phenylalanine (F). 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	Pathogenic	0.98
BayesDel_addAF	Uncertain	0.098	D
BayesDel_noAF	Benign	-0.10
CADD	Pathogenic	31
DANN	Uncertain	1.0
DEOGEN2	Benign	0.074	.;T;T;T;T
Eigen	Pathogenic	0.73
Eigen_PC	Pathogenic	0.75
FATHMM_MKL	Uncertain	0.97	D
LIST_S2	Uncertain	0.96	D;D;D;D;D
M_CAP	Benign	0.037	D
MetaRNN	Uncertain	0.46	T;T;T;T;T
MetaSVM	Benign	-0.69	T
MutationAssessor	Uncertain	2.7	.;.;M;.;.
PrimateAI	Pathogenic	0.81	D
PROVEAN	Uncertain	-4.2	.;.;D;D;D
REVEL	Uncertain	0.33
Sift	Pathogenic	0.0	.;.;D;D;D
Sift4G	Pathogenic	0.0010	D;D;D;D;D
Polyphen		1.0	.;.;D;.;.
Vest4		0.39
MutPred		0.28		Loss of phosphorylation at S2 (P = 0.0081);Loss of phosphorylation at S2 (P = 0.0081);Loss of phosphorylation at S2 (P = 0.0081);Loss of phosphorylation at S2 (P = 0.0081);Loss of phosphorylation at S2 (P = 0.0081);
MVP		0.56
MPC		3.5
ClinPred		1.0	D
GERP RS		6.0
RBP_binding_hub_radar		0.97
RBP_regulation_power_radar		2.7
Varity_R		0.73
gMVP		0.86

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: rs2051503613; hg19: chr14-35761687;