Genetic Variant HPCAL4:p.Asp143Asn (chr1-39682685-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_016257.4(HPCAL4):c.427G>A(p.Asp143Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000359 in 1,614,048 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000037 ( 0 hom. )

Consequence

HPCAL4
NM_016257.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.74

Variant links:

Genes affected

HPCAL4 (HGNC:18212): (hippocalcin like 4) The protein encoded by this gene is highly similar to human hippocalcin protein and hippocalcin like-1 protein. It also has similarity to rat neural visinin-like Ca2+-binding protein-type 1 and 2 proteins. This encoded protein may be involved in the calcium-dependent regulation of rhodopsin phosphorylation. The transcript of this gene has multiple polyadenylation sites. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2013]

HPCAL4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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 rank	MANE	Protein	UniProt
HPCAL4	NM_016257.4 link	c.427G>A	p.Asp143Asn	missense_variant	Exon 4 of 4	ENST00000372844.8	NP_057341.1	Q9UM19
HPCAL4	NM_001282396.2 link	c.427G>A	p.Asp143Asn	missense_variant	Exon 5 of 5		NP_001269325.1	Q9UM19
HPCAL4	NM_001282397.2 link	c.211G>A	p.Asp71Asn	missense_variant	Exon 3 of 3		NP_001269326.1	B4DGW9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
HPCAL4	ENST00000372844.8 link	c.427G>A	p.Asp143Asn	missense_variant	Exon 4 of 4	1	NM_016257.4	ENSP00000361935.3	Q9UM19
HPCAL4	ENST00000617690.2 link	c.427G>A	p.Asp143Asn	missense_variant	Exon 5 of 5	5		ENSP00000481834.1	Q9UM19
HPCAL4	ENST00000612703.3 link	c.211G>A	p.Asp71Asn	missense_variant	Exon 3 of 3	2		ENSP00000484070.1	B4DGW9

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

251478

Hom.:

AF XY:

0.0000294

AC XY:

AN XY:

135912

show subpopulations

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000369

AC:

AN:

1461882

Hom.:

Cov.:

AF XY:

0.0000358

AC XY:

AN XY:

727244

show subpopulations

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:

0.0000477

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152166

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74336

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000264

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 27, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.427G>A (p.D143N) alteration is located in exon 4 (coding exon 3) of the HPCAL4 gene. This alteration results from a G to A substitution at nucleotide position 427, causing the aspartic acid (D) at amino acid position 143 to be replaced by an asparagine (N). 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

0.34

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.40

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.40

.;T;T

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.63

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.94

D;D;.

M_CAP

Benign

0.039

MetaRNN

Uncertain

0.73

D;D;D

MetaSVM

Uncertain

-0.10

MutationAssessor

Benign

1.9

.;L;L

PrimateAI

Pathogenic

0.85

PROVEAN

Uncertain

-3.8

.;.;D

REVEL

Uncertain

0.41

Sift

Benign

0.11

.;.;T

Sift4G

Benign

0.099

T;T;T

Polyphen

1.0

D;D;D

Vest4

0.63

MVP

0.80

MPC

1.6

ClinPred

0.92

GERP RS

4.6

Varity_R

0.47

gMVP

0.70

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over