Variant 17-48529689-C-T details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_002144.4(HOXB1):c.764G>A(p.Arg255Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,460,922 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 12/21 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: 0.0000014 ( 0 hom. )

Consequence

HOXB1
NM_002144.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.91

Variant links:

Genes affected

HOXB1 (HGNC:5111): (homeobox B1) This gene belongs to the homeobox family of genes. The homeobox genes encode a highly conserved family of transcription factors that play an important role in morphogenesis in all multicellular organisms. Mammals possess four similar homeobox gene clusters, HOXA, HOXB, HOXC and HOXD, located on different chromosomes, consisting of 9 to 11 genes arranged in tandem. This gene is one of several homeobox HOXB genes located in a cluster on chromosome 17. [provided by RefSeq, Jul 2008]

HOXB1 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, 0.973

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HOXB1	NM_002144.4 linkuse as main transcript	c.764G>A	p.Arg255Gln	missense_variant	2/2	ENST00000239174.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HOXB1	ENST00000239174.7 linkuse as main transcript	c.764G>A	p.Arg255Gln	missense_variant	2/2	1	NM_002144.4	P1	P14653-1
HOXB1	ENST00000577092.1 linkuse as main transcript	c.*517G>A		3_prime_UTR_variant	1/1				P14653-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1460922

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726690

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.00e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Facial paresis, hereditary congenital, 3

Uncertain:1

Uncertain significance, criteria provided, single submitter

research

Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard

Jun 15, 2018

The homozygous p.Arg255Gln variant was identified by our study in two siblings with Hereditary Congenital Facial Paresis. This variant was absent from large population studies. The Arginine (Arg) at position 255 is highly conserved in mammals and evolutionarily distant species, raising the possibility that a change at this position may not be tolerated. Computational prediction tools suggest that this variant may impact the protein, though this information is not predictive enough to determine pathogenicity. In summary, the clinical significance of this variant is uncertain. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.56

BayesDel_noAF

Pathogenic

0.57

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.94

D;D

Eigen

Pathogenic

1.1

Eigen_PC

Pathogenic

0.96

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Pathogenic

0.99

.;D

M_CAP

Pathogenic

0.59

MetaRNN

Pathogenic

0.97

D;D

MetaSVM

Pathogenic

1.0

MutationAssessor

Pathogenic

5.2

H;H

MutationTaster

Benign

1.0

D;D

PrimateAI

Pathogenic

0.90

PROVEAN

Uncertain

-3.5

D;.

REVEL

Pathogenic

0.96

Sift

Pathogenic

0.0

D;.

Sift4G

Pathogenic

0.0

D;.

Polyphen

1.0

D;D

Vest4

0.87

MutPred

0.85

Loss of helix (P = 0.1299);Loss of helix (P = 0.1299);

MVP

0.98

MPC

1.4

ClinPred

1.0

GERP RS

5.3

Varity_R

0.95

gMVP

0.92

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