rs28928892

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM1PM2PM5PP3_Moderate

The NM_000523.4(HOXD13):​c.947C>A​(p.Ser316Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,670 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S316C) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

HOXD13
NM_000523.4 missense

Scores

16
2
1

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.08

Publications

6 publications found
Variant links:
Genes affected
HOXD13 (HGNC:5136): (homeobox D13) 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 HOXD genes located in a cluster on chromosome 2. Deletions that remove the entire HOXD gene cluster or the 5' end of this cluster have been associated with severe limb and genital abnormalities. Mutations in this particular gene cause synpolydactyly. [provided by RefSeq, Jul 2008]
HOXD13 Gene-Disease associations (from GenCC):
  • brachydactyly-syndactyly syndrome
    Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Laboratory for Molecular Medicine
  • synpolydactyly type 1
    Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
  • brachydactyly type E
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • syndactyly type 5
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

PM1
In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 6 uncertain in NM_000523.4
PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr2-176094645-C-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 14870.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.939

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
HOXD13NM_000523.4 linkc.947C>A p.Ser316Tyr missense_variant Exon 2 of 2 ENST00000392539.4 NP_000514.2 P35453
HOXD13XM_011511068.3 linkc.890C>A p.Ser297Tyr missense_variant Exon 2 of 2 XP_011509370.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
HOXD13ENST00000392539.4 linkc.947C>A p.Ser316Tyr missense_variant Exon 2 of 2 1 NM_000523.4 ENSP00000376322.3 P35453

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD2 exomes
AF:
0.00000398
AC:
1
AN:
251482
AF XY:
0.00000736
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:
0.00000879
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461670
Hom.:
0
Cov.:
32
AF XY:
0.00000138
AC XY:
1
AN XY:
727154
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:
0
AN:
33476
American (AMR)
AF:
0.00
AC:
0
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86248
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53420
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
8.99e-7
AC:
1
AN:
1111810
Other (OTH)
AF:
0.00
AC:
0
AN:
60388
⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), 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
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
33
ExAC
AF:
0.00000824
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
1.0
BayesDel_addAF
Pathogenic
0.53
D
BayesDel_noAF
Pathogenic
0.52
CADD
Pathogenic
33
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.97
D
Eigen
Pathogenic
0.89
Eigen_PC
Pathogenic
0.80
FATHMM_MKL
Uncertain
0.94
D
LIST_S2
Pathogenic
0.97
D
M_CAP
Pathogenic
0.30
D
MetaRNN
Pathogenic
0.94
D
MetaSVM
Pathogenic
1.1
D
MutationAssessor
Pathogenic
3.1
M
PhyloP100
6.1
PrimateAI
Pathogenic
0.90
D
PROVEAN
Pathogenic
-5.3
D
REVEL
Pathogenic
0.94
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0
D
Polyphen
1.0
D
Vest4
0.96
MutPred
0.75
Loss of disorder (P = 0.021);
MVP
0.99
ClinPred
1.0
D
GERP RS
4.8
Varity_R
0.96
gMVP
0.75
Mutation Taster
=30/70
disease causing

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

Other links and lift over

dbSNP: rs28928892; hg19: chr2-176959373; API