Genetic Variant NM_198402.5:c.58G>T (chr3-123584970-C-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_198402.5(HACD2):c.58G>T(p.Ala20Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000572 in 1,485,962 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000061 ( 1 hom. )

Consequence

HACD2
NM_198402.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.927

Publications

0 publications found

Variant links:

Genes affected

HACD2 (HGNC:9640): (3-hydroxyacyl-CoA dehydratase 2) The protein encoded by this gene can catalyze the third step (dehydration) in the conversion of long chain fatty acids to very long chain fatty acids. The encoded protein localizes to the endoplasmic reticulum membrane. [provided by RefSeq, Jul 2016]

HACD2 links:

MYLK-AS1 (HGNC:42440): (MYLK antisense RNA 1)

MYLK-AS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.012791753).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HACD2	NM_198402.5 link	c.58G>T	p.Ala20Ser	missense_variant	Exon 1 of 7	ENST00000383657.10	NP_940684.1	Q6Y1H2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HACD2	ENST00000383657.10 link	c.58G>T	p.Ala20Ser	missense_variant	Exon 1 of 7	1	NM_198402.5	ENSP00000373153.5		Q6Y1H2

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151760

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:

0.000642

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000226

AC:

AN:

119438

AF XY:

0.000243

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000615

AC:

AN:

1334202

Hom.:

Cov.:

AF XY:

0.0000866

AC XY:

AN XY:

658046

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

28132

American (AMR)

AF:

0.00

AC:

AN:

33054

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

22472

East Asian (EAS)

AF:

0.00

AC:

AN:

31198

South Asian (SAS)

AF:

0.00101

AC:

AN:

76898

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40800

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4904

European-Non Finnish (NFE)

AF:

9.59e-7

AC:

AN:

1042576

Other (OTH)

AF:

0.0000554

AC:

AN:

54168

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

GnomAD4 genome

AF:

0.0000198

AC:

AN:

151760

Hom.:

Cov.:

AF XY:

0.0000405

AC XY:

AN XY:

74096

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41448

American (AMR)

AF:

0.00

AC:

AN:

15228

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5132

South Asian (SAS)

AF:

0.000642

AC:

AN:

4670

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10590

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67904

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

ExAC

AF:

0.000143

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 04, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.58G>T (p.A20S) alteration is located in exon 1 (coding exon 1) of the HACD2 gene. This alteration results from a G to T substitution at nucleotide position 58, causing the alanine (A) at amino acid position 20 to be replaced by a serine (S). 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

0.084

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.52

CADD

Benign

(source)

DANN

Benign

0.83

DEOGEN2

Benign

0.0062

Eigen

Benign

-1.0

Eigen_PC

Benign

-0.95

FATHMM_MKL

Benign

0.0089

LIST_S2

Benign

0.38

M_CAP

Uncertain

0.24

MetaRNN

Benign

0.013

MetaSVM

Benign

-0.94

MutationAssessor

Benign

0.0

PhyloP100

0.93

PrimateAI

Pathogenic

0.82

PROVEAN

Benign

-0.63

REVEL

Benign

0.021

Sift

Benign

0.30

Sift4G

Benign

0.48

Polyphen

0.0

Vest4

0.11

MutPred

0.30

Gain of glycosylation at A20 (P = 4e-04);

MVP

0.043

MPC

0.60

ClinPred

0.083

GERP RS

0.38

PromoterAI

-0.053

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.11

gMVP

0.38

Mutation Taster

=94/6

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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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NM_198402.5:c.58G>T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over