Genetic Variant HAPLN4:p.Ala382Ser (chr19-19257882-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_023002.3(HAPLN4):c.1144G>T(p.Ala382Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000685 in 1,459,428 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000031 ( 0 hom. )

Consequence

HAPLN4
NM_023002.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.43

Publications

0 publications found

Variant links:

Genes affected

HAPLN4 (HGNC:31357): (hyaluronan and proteoglycan link protein 4) Predicted to enable hyaluronic acid binding activity. Predicted to be involved in central nervous system development and skeletal system development. Predicted to be located in extracellular region. Predicted to be active in extracellular matrix. [provided by Alliance of Genome Resources, Apr 2022]

HAPLN4 links:

ENSG00000267629 (HGNC:):

ENSG00000267629 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.01922661).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_023002.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HAPLN4	NM_023002.3	MANE Select	c.1144G>T	p.Ala382Ser	missense	Exon 5 of 5	NP_075378.1	Q86UW8

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
HAPLN4	ENST00000291481.8	TSL:1 MANE Select	c.1144G>T	p.Ala382Ser	missense	Exon 5 of 5	ENSP00000291481.5	Q86UW8
HAPLN4	ENST00000898464.1		c.1216G>T	p.Ala406Ser	missense	Exon 5 of 5	ENSP00000568523.1
HAPLN4	ENST00000898466.1		c.1042G>T	p.Ala348Ser	missense	Exon 5 of 5	ENSP00000568525.1

Frequencies

GnomAD3 genomes

AF:

0.0000395

AC:

AN:

152068

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000134

AC:

AN:

74716

AF XY:

0.0000232

show subpopulations

Gnomad AFR exome

AF:

0.000529

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000306

AC:

AN:

1307252

Hom.:

Cov.:

AF XY:

0.00000155

AC XY:

AN XY:

643604

show subpopulations

African (AFR)

AF:

0.0000756

AC:

AN:

26450

American (AMR)

AF:

0.0000455

AC:

AN:

21980

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

21300

East Asian (EAS)

AF:

0.00

AC:

AN:

31090

South Asian (SAS)

AF:

0.00

AC:

AN:

68700

European-Finnish (FIN)

AF:

0.00

AC:

AN:

32690

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4612

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1046354

Other (OTH)

AF:

0.0000185

AC:

AN:

54076

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.513

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152176

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74408

show subpopulations

African (AFR)

AF:

0.000144

AC:

AN:

41532

American (AMR)

AF:

0.00

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5168

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67954

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000378

ExAC

AF:

0.0000113

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.088

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.59

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.010

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.20

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.58

M_CAP

Benign

0.057

MetaRNN

Benign

0.019

MetaSVM

Benign

-0.99

MutationAssessor

Benign

0.0

PhyloP100

1.4

PrimateAI

Pathogenic

0.90

PROVEAN

Benign

-0.22

REVEL

Benign

0.063

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.056

Polyphen

0.0010

Vest4

0.20

MutPred

0.32

Gain of glycosylation at A382 (P = 0.0053)

MVP

0.34

MPC

0.63

ClinPred

0.23

GERP RS

1.8

Varity_R

0.17

gMVP

0.43

Mutation Taster

=96/4

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over