Genetic Variant NM_031463.5:c.871G>A (chr16-84129571-C-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_031463.5(HSDL1):c.871G>A(p.Gly291Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,008 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

HSDL1
NM_031463.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.36

Publications

0 publications found

Variant links:

Genes affected

HSDL1 (HGNC:16475): (hydroxysteroid dehydrogenase like 1) Predicted to enable oxidoreductase activity. Located in intermediate filament cytoskeleton and mitochondrion. [provided by Alliance of Genome Resources, Apr 2022]

HSDL1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.918

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HSDL1	NM_031463.5 link	c.871G>A	p.Gly291Arg	missense_variant	Exon 5 of 6	ENST00000219439.9	NP_113651.4	Q3SXM5-1I6L975
HSDL1	NM_001146051.2 link	c.706G>A	p.Gly236Arg	missense_variant	Exon 6 of 7		NP_001139523.1	Q3SXM5-2I6L975
HSDL1	XM_005256189.4 link	c.871G>A	p.Gly291Arg	missense_variant	Exon 5 of 6		XP_005256246.1	Q3SXM5-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HSDL1	ENST00000219439.9 link	c.871G>A	p.Gly291Arg	missense_variant	Exon 5 of 6	1	NM_031463.5	ENSP00000219439.4		Q3SXM5-1
HSDL1	ENST00000434463.7 link	c.706G>A	p.Gly236Arg	missense_variant	Exon 6 of 7	2		ENSP00000407437.3		Q3SXM5-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461008

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726860

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33464

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86246

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

9.00e-7

AC:

AN:

1111198

Other (OTH)

AF:

0.00

AC:

AN:

60360

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 06, 2021

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.871G>A (p.G291R) alteration is located in exon 5 (coding exon 3) of the HSDL1 gene. This alteration results from a G to A substitution at nucleotide position 871, causing the glycine (G) at amino acid position 291 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

Pathogenic

0.96

BayesDel_addAF

Pathogenic

0.48

BayesDel_noAF

Pathogenic

0.45

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.25

T;.

Eigen

Pathogenic

0.94

Eigen_PC

Pathogenic

0.86

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.95

D;D

M_CAP

Pathogenic

0.37

MetaRNN

Pathogenic

0.92

D;D

MetaSVM

Pathogenic

0.96

MutationAssessor

Pathogenic

3.6

H;.

PhyloP100

7.4

PrimateAI

Pathogenic

0.88

PROVEAN

Pathogenic

-7.7

D;D

REVEL

Pathogenic

0.86

Sift

Pathogenic

0.0

D;D

Sift4G

Uncertain

0.0020

D;D

Polyphen

1.0

D;.

Vest4

0.98

MutPred

0.62

Gain of MoRF binding (P = 0.0043);.;

MVP

0.99

MPC

0.22

ClinPred

1.0

GERP RS

5.3

Varity_R

0.85

gMVP

0.88

Mutation Taster

=14/86

disease causing

(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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NM_031463.5:c.871G>A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over