chr14-64542230-A-G

Position:

• chr14-64542230-A-G

Variant summary

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

The NM_021979.4(HSPA2):​c.1381A>G​(p.Lys461Glu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: HSPA2 NM_021979.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.48

Genes affected

HSPA2 (HGNC:5235): (heat shock protein family A (Hsp70) member 2) Enables disordered domain specific binding activity; enzyme binding activity; and unfolded protein binding activity. Involved in negative regulation of inclusion body assembly and protein refolding. Located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

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
HSPA2	NM_021979.4	c.1381A>G	p.Lys461Glu	missense_variant	1/1	ENST00000247207.7	NP_068814.2
HSPA2	NM_001387931.1	c.1381A>G	p.Lys461Glu	missense_variant	2/2		NP_001374860.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HSPA2	ENST00000247207.7	c.1381A>G	p.Lys461Glu	missense_variant	1/1		NM_021979.4	ENSP00000247207	P1
HSPA2	ENST00000394709.2	c.1381A>G	p.Lys461Glu	missense_variant	2/2	1		ENSP00000378199	P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 85

GnomAD4 genome Cov.: 31

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 30, 2022

The c.1381A>G (p.K461E) alteration is located in exon 1 (coding exon 1) of the HSPA2 gene. This alteration results from a A to G substitution at nucleotide position 1381, causing the lysine (K) at amino acid position 461 to be replaced by a glutamic acid (E). 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	Uncertain	0.54
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Uncertain	-0.080
CADD	Pathogenic	28
DANN	Uncertain	0.98
DEOGEN2	Benign	0.21	T;T
Eigen	Benign	0.085
Eigen_PC	Benign	0.089
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.71	.;T
M_CAP	Benign	0.017	T
MetaRNN	Uncertain	0.43	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.0	L;L
MutationTaster	Benign	0.95	D;D
PrimateAI	Pathogenic	0.87	D
PROVEAN	Benign	-2.2	N;N
REVEL	Uncertain	0.35
Sift	Uncertain	0.0010	D;D
Sift4G	Uncertain	0.010	D;D
Polyphen		0.77	P;P
Vest4		0.56
MutPred		0.52		Gain of catalytic residue at D463 (P = 0.0021);Gain of catalytic residue at D463 (P = 0.0021);
MVP		0.43
ClinPred		0.87	D
GERP RS		4.0
Varity_R		0.77
gMVP		0.69

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: chr14-65008948;