chr5-133064990-T-G

Variant names:

• chr5-133064990-T-G
• NM_002154.4:c.118T>G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_002154.4(HSPA4):​c.118T>G​(p.Ser40Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: HSPA4 NM_002154.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.22

Genes affected

HSPA4 (HGNC:5237): (heat shock protein family A (Hsp70) member 4) Predicted to enable ATP binding activity. Involved in chaperone-mediated protein complex assembly and protein insertion into mitochondrial outer membrane. Located in cytosol and extracellular exosome. Implicated in Chagas disease. Biomarker of chronic obstructive pulmonary disease; rheumatoid arthritis; type 2 diabetes mellitus; and ulcerative colitis. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.34727204).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HSPA4	NM_002154.4	c.118T>G	p.Ser40Ala	missense_variant	Exon 2 of 19	ENST00000304858.7	NP_002145.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HSPA4	ENST00000304858.7	c.118T>G	p.Ser40Ala	missense_variant	Exon 2 of 19	1	NM_002154.4	ENSP00000302961.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jan 20, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.118T>G (p.S40A) alteration is located in exon 2 (coding exon 2) of the HSPA4 gene. This alteration results from a T to G substitution at nucleotide position 118, causing the serine (S) at amino acid position 40 to be replaced by an alanine (A). 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	0.11
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.52
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.19	T;T;.
Eigen	Benign	-0.28
Eigen_PC	Benign	-0.033
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.87	D;D;D
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.35	T;T;T
MetaSVM	Benign	-0.82	T
MutationAssessor	Benign	0.48	N;.;.
PrimateAI	Uncertain	0.66	T
PROVEAN	Benign	-0.60	N;.;.
REVEL	Benign	0.12
Sift	Benign	0.62	T;.;.
Sift4G	Benign	0.62	T;T;T
Polyphen		0.0010	B;.;.
Vest4		0.39
MutPred		0.67		Loss of disorder (P = 0.0839);Loss of disorder (P = 0.0839);Loss of disorder (P = 0.0839);
MVP		0.32
MPC		1.5
ClinPred		0.64	D
GERP RS		5.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Varity_R		0.13
gMVP		0.79

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: chr5-132400682;