chr11-14517688-T-C

Position:

• chr11-14517688-T-C

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2 BP4 BS2

The NM_002786.4(PSMA1):​c.208A>G​(p.Ile70Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000343 in 1,457,466 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: PSMA1 NM_002786.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.47

Genes affected

PSMA1 (HGNC:9530): (proteasome 20S subunit alpha 1) 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. Alternative splicing results in multiple transcript variants encoding distinct isoforms.[provided by RefSeq, Jan 2009]

ENSG00000256206 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.29355168).
• BS2: High AC in GnomAdExome4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PSMA1	NM_002786.4	c.208A>G	p.Ile70Val	missense_variant	4/10	ENST00000396394.7	NP_002777.1
PSMA1	NM_148976.3	c.226A>G	p.Ile76Val	missense_variant	5/11		NP_683877.1
PSMA1	NM_001143937.2	c.208A>G	p.Ile70Val	missense_variant	4/5		NP_001137409.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PSMA1	ENST00000396394.7	c.208A>G	p.Ile70Val	missense_variant	4/10	1	NM_002786.4	ENSP00000379676.2
ENSG00000256206	ENST00000555531.1	n.208A>G		non_coding_transcript_exon_variant	4/12	2		ENSP00000457299.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000343 AC: 5 AN: 1457466 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 724730

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: 0.00000450

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

EpiCase AF: 0.0000546

EpiControl AF: 0.00

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

Aug 16, 2021

The c.226A>G (p.I76V) alteration is located in exon 5 (coding exon 4) of the PSMA1 gene. This alteration results from a A to G substitution at nucleotide position 226, causing the isoleucine (I) at amino acid position 76 to be replaced by a valine (V). 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	0.065
BayesDel_addAF	Benign	-0.085	T
BayesDel_noAF	Benign	-0.36
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.13	T;.;.
Eigen	Benign	-0.27
Eigen_PC	Benign	-0.0082
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.93	D;D;D
M_CAP	Benign	0.0051	T
MetaRNN	Benign	0.29	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.47	N;.;.
PrimateAI	Uncertain	0.78	T
PROVEAN	Benign	-0.050	N;N;N
REVEL	Benign	0.13
Sift	Benign	0.66	T;T;T
Sift4G	Benign	0.84	T;T;T
Polyphen		0.0	B;.;B
Vest4		0.37
MutPred		0.68		Gain of sheet (P = 0.1539);.;.;
MVP		0.42
MPC		0.41
ClinPred		0.77	D
GERP RS		5.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.16
gMVP		0.73

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr11-14539234;