6-134987790-G-A

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_006620.4(HBS1L):c.1085C>T(p.Ala362Val) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000765 in 1,567,882 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000071 ( 0 hom. )

Consequence

HBS1L
NM_006620.4 missense, splice_region

Scores

Splicing: ADA: 0.9758

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 10.0

Variant links:

Genes affected

HBS1L (HGNC:4834): (HBS1 like translational GTPase) This gene encodes a member of the GTP-binding elongation factor family. It is expressed in multiple tissues with the highest expression in heart and skeletal muscle. The intergenic region of this gene and the MYB gene has been identified to be a quantitative trait locus (QTL) controlling fetal hemoglobin level, and this region influnces erythrocyte, platelet, and monocyte counts as well as erythrocyte volume and hemoglobin content. DNA polymorphisms at this region associate with fetal hemoglobin levels and pain crises in sickle cell disease. A single nucleotide polymorphism in exon 1 of this gene is significantly associated with severity in beta-thalassemia/Hemoglobin E. Multiple alternatively spliced transcript variants encoding different protein isoforms have been found for this gene. [provided by RefSeq, May 2009]

HBS1L links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.955

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
HBS1L	NM_006620.4 linkuse as main transcript	c.1085C>T	p.Ala362Val	missense_variant, splice_region_variant	9/18	ENST00000367837.10
HBS1L	NM_001145158.2 linkuse as main transcript	c.959C>T	p.Ala320Val	missense_variant, splice_region_variant	8/17
HBS1L	NM_001363686.2 linkuse as main transcript	c.593C>T	p.Ala198Val	missense_variant, splice_region_variant	10/19
HBS1L	XM_047418093.1 linkuse as main transcript	c.1085C>T	p.Ala362Val	missense_variant, splice_region_variant	9/16

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HBS1L	ENST00000367837.10 linkuse as main transcript	c.1085C>T	p.Ala362Val	missense_variant, splice_region_variant	9/18	1	NM_006620.4	P1	Q9Y450-1

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

152012

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000187

AC:

AN:

214350

Hom.:

AF XY:

0.0000172

AC XY:

AN XY:

116496

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000811

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000666

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000979

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000706

AC:

AN:

1415870

Hom.:

Cov.:

AF XY:

0.00000569

AC XY:

AN XY:

703414

show subpopulations

Gnomad4 AFR exome

AF:

0.0000325

Gnomad4 AMR exome

AF:

0.0000281

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000267

Gnomad4 SAS exome

AF:

0.0000128

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000549

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000132

AC:

AN:

152012

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74250

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000656

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000330

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 30, 2022

The c.1085C>T (p.A362V) alteration is located in exon 9 (coding exon 9) of the HBS1L gene. This alteration results from a C to T substitution at nucleotide position 1085, causing the alanine (A) at amino acid position 362 to be replaced by a valine (V). 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

0.99

BayesDel_addAF

Pathogenic

0.38

BayesDel_noAF

Pathogenic

0.30

Cadd

Pathogenic

Dann

Pathogenic

1.0

DEOGEN2

Benign

0.37

T;T;T;.;T;.

Eigen

Pathogenic

0.93

Eigen_PC

Pathogenic

0.86

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.99

D;D;D;D;D;D

M_CAP

Uncertain

0.24

MetaRNN

Pathogenic

0.95

D;D;D;D;D;D

MetaSVM

Uncertain

0.24

MutationAssessor

Uncertain

2.4

M;.;.;.;.;.

MutationTaster

Benign

1.0

D;D;D;D;D;D

PrimateAI

Pathogenic

0.83

PROVEAN

Uncertain

-4.0

D;D;D;D;D;D

REVEL

Pathogenic

0.78

Sift

Pathogenic

0.0

D;D;D;D;D;D

Sift4G

Pathogenic

0.0

D;D;D;D;D;D

Polyphen

1.0

D;.;.;D;.;.

Vest4

0.84

MutPred

0.88

Gain of sheet (P = 0.0827);.;.;.;.;.;

MVP

0.82

MPC

0.68

ClinPred

0.98

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.8

Varity_R

0.92

gMVP

0.93

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

0.98

dbscSNV1_RF

Pathogenic

0.87

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