10-116674864-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_025015.3(HSPA12A):c.1945G>A(p.Gly649Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,642 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: HSPA12A NM_025015.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.57

Genes affected

HSPA12A (HGNC:19022): (heat shock protein family A (Hsp70) member 12A) Predicted to enable ATP binding activity. Located in extracellular exosome. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.949

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HSPA12A	NM_025015.3	c.1945G>A	p.Gly649Arg	missense_variant	12/12	ENST00000369209.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HSPA12A	ENST00000369209.8	c.1945G>A	p.Gly649Arg	missense_variant	12/12	1	NM_025015.3	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000401 AC: 1 AN: 249394 Hom.: 0 AF XY: 0.00000739 AC XY: 1 AN XY: 135362

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461642 Hom.: 0 Cov.: 31 AF XY: 0.00000688 AC XY: 5 AN XY: 727154

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: 0.0000464

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 8.99e-7

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

Sep 06, 2022

The c.1945G>A (p.G649R) alteration is located in exon 12 (coding exon 12) of the HSPA12A gene. This alteration results from a G to A substitution at nucleotide position 1945, causing the glycine (G) at amino acid position 649 to be replaced by an arginine (R). 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	1.0
BayesDel_addAF	Pathogenic	0.26	D
BayesDel_noAF	Pathogenic	0.23
Cadd	Pathogenic	30
Dann	Pathogenic	1.0
DEOGEN2	Uncertain	0.49	T;T
Eigen	Pathogenic	0.92
Eigen_PC	Pathogenic	0.90
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.98	D;D
M_CAP	Uncertain	0.13	D
MetaRNN	Pathogenic	0.95	D;D
MetaSVM	Benign	-0.29	T
MutationAssessor	Uncertain	2.7	M;.
MutationTaster	Benign	1.0	D
PrimateAI	Pathogenic	0.82	D
PROVEAN	Pathogenic	-6.7	D;.
REVEL	Pathogenic	0.65
Sift	Uncertain	0.0010	D;.
Sift4G	Pathogenic	0.0010	D;.
Polyphen		1.0	D;.
Vest4		0.93
MutPred		0.84		Loss of loop (P = 0.0804);.;
MVP		0.58
MPC		1.4
ClinPred		1.0	D
GERP RS		6.0
Varity_R		0.74
gMVP		0.84

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: rs868970051; hg19: chr10-118434375;