13-31138848-T-C

Position:

• chr13-31138848-T-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_006644.4(HSPH1):​c.2141A>G​(p.Lys714Arg) 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. 15/21 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)
• Consequence: HSPH1 NM_006644.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.147

Genes affected

HSPH1 (HGNC:16969): (heat shock protein family H (Hsp110) member 1) This gene encodes a member of the heat shock protein 70 family of proteins. The encoded protein functions as a nucleotide exchange factor for the molecular chaperone heat shock cognate 71 kDa protein (Hsc70). In addition, this protein plays a distinct but related role as a holdase that inhibits the aggregation of misfolded proteins, including the cystic fibrosis transmembrane conductance regulator (CFTR) protein. Elevated expression of this protein has been observed in numerous human cancers. [provided by RefSeq, Mar 2017]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.04474005).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HSPH1	NM_006644.4	c.2141A>G	p.Lys714Arg	missense_variant	16/18	ENST00000320027.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HSPH1	ENST00000320027.10	c.2141A>G	p.Lys714Arg	missense_variant	16/18	1	NM_006644.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

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

Jan 22, 2024

The c.2141A>G (p.K714R) alteration is located in exon 16 (coding exon 16) of the HSPH1 gene. This alteration results from a A to G substitution at nucleotide position 2141, causing the lysine (K) at amino acid position 714 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	Benign	0.063
BayesDel_addAF	Benign	-0.36	T
BayesDel_noAF	Benign	-0.76
CADD	Benign	13
DANN	Benign	0.97
DEOGEN2	Benign	0.014	T;T;.;.
Eigen	Benign	-1.0
Eigen_PC	Benign	-0.99
FATHMM_MKL	Benign	0.14	N
LIST_S2	Uncertain	0.89	D;D;D;D
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.045	T;T;T;T
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	0.71	.;N;.;.
MutationTaster	Benign	1.0	N;N;N;N;N
PrimateAI	Benign	0.29	T
PROVEAN	Benign	-0.53	.;N;.;N
REVEL	Benign	0.059
Sift	Benign	0.35	.;T;.;T
Sift4G	Benign	0.47	T;T;T;T
Polyphen		0.0010	.;B;.;B
Vest4		0.090
MutPred		0.24		.;Loss of ubiquitination at K714 (P = 0.0087);.;.;
MVP		0.28
MPC		0.33
ClinPred		0.093	T
GERP RS		-2.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.5
Varity_R		0.026
gMVP		0.14

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: chr13-31712985;