Genetic Variant NM_016400.4:c.44C>T (chr15-43800666-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_016400.4(HYPK):c.44C>T(p.Thr15Ile) variant causes a missense change. The variant allele was found at a frequency of 0.000512 in 1,614,048 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00052 ( 1 hom. )

Consequence

HYPK
NM_016400.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.75

Variant links:

Genes affected

HYPK (HGNC:18418): (huntingtin interacting protein K) Enables protein N-terminus binding activity. Involved in negative regulation of apoptotic process and protein stabilization. Located in cytoplasm; microtubule cytoskeleton; and nucleoplasm. Part of protein-containing complex. [provided by Alliance of Genome Resources, Apr 2022]

HYPK links:

SERF2 (HGNC:10757): (small EDRK-rich factor 2) Involved in protein destabilization. Predicted to be located in cytosol and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

SERF2 links:

SERF2-C15ORF63 (HGNC:):

SERF2-C15ORF63 links:

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ACMG classification

Classification made for transcript

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=0.027335018).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HYPK	NM_016400.4 link	c.44C>T	p.Thr15Ile	missense_variant	Exon 1 of 4	ENST00000442995.4	NP_057484.4	Q9NX55-2A0A024R5Q1
HYPK	NM_001199885.1 link	c.68C>T	p.Thr23Ile	missense_variant	Exon 1 of 3		NP_001186814.1	Q9NX55
SERF2-C15ORF63	NR_037673.1 link	n.689C>T		non_coding_transcript_exon_variant	Exon 3 of 6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HYPK	ENST00000442995.4 link	c.44C>T	p.Thr15Ile	missense_variant	Exon 1 of 4	1	NM_016400.4	ENSP00000401155.3		Q9NX55-2

Frequencies

GnomAD3 genomes

AF:

0.000388

AC:

AN:

152092

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000966

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00111

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:

0.000529

Gnomad OTH

AF:

0.000959

GnomAD3 exomes

AF:

0.000414

AC:

103

AN:

248910

Hom.:

AF XY:

0.000393

AC XY:

AN XY:

134842

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00101

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:

0.000529

Gnomad OTH exome

AF:

0.00131

GnomAD4 exome

AF:

0.000525

AC:

767

AN:

1461838

Hom.:

Cov.:

AF XY:

0.000498

AC XY:

362

AN XY:

727224

show subpopulations

Gnomad4 AFR exome

AF:

0.000119

Gnomad4 AMR exome

AF:

0.00114

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.0000374

Gnomad4 NFE exome

AF:

0.000609

Gnomad4 OTH exome

AF:

0.000464

GnomAD4 genome

AF:

0.000388

AC:

AN:

152210

Hom.:

Cov.:

AF XY:

0.000470

AC XY:

AN XY:

74420

show subpopulations

Gnomad4 AFR

AF:

0.0000963

Gnomad4 AMR

AF:

0.00111

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000529

Gnomad4 OTH

AF:

0.000949

Alfa

AF:

0.000456

Hom.:

Bravo

AF:

0.000348

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000465

AC:

ExAC

AF:

0.000428

AC:

EpiCase

AF:

0.000545

EpiControl

AF:

0.000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 15, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.68C>T (p.T23I) alteration is located in exon 1 (coding exon 1) of the HYPK gene. This alteration results from a C to T substitution at nucleotide position 68, causing the threonine (T) at amino acid position 23 to be replaced by an isoleucine (I). 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

0.12

BayesDel_addAF

Benign

-0.45

BayesDel_noAF

Benign

-0.49

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.018

T;T;T

Eigen

Benign

-0.038

Eigen_PC

Benign

0.17

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.82

.;T;T

M_CAP

Benign

0.0091

MetaRNN

Benign

0.027

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.0

N;N;.

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-1.6

N;N;N

REVEL

Benign

0.019

Sift

Benign

0.12

T;T;D

Sift4G

Benign

0.15

T;T;T

Polyphen

0.011

B;B;.

Vest4

0.24

MVP

0.67

MPC

0.75

ClinPred

0.10

GERP RS

5.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.26

gMVP

0.48

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