chr2-176093433-C-A

Position:

• chr2-176093433-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_000523.4(HOXD13):​c.543C>A​(p.Asn181Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,592 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign 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. N181D) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: HOXD13 NM_000523.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0280

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.27936244).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HOXD13	NM_000523.4	c.543C>A	p.Asn181Lys	missense_variant	1/2	ENST00000392539.4
HOXD13	XM_011511068.3	c.725-1047C>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HOXD13	ENST00000392539.4	c.543C>A	p.Asn181Lys	missense_variant	1/2	1	NM_000523.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461592 Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1 AN XY: 727098

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.42
BayesDel_addAF	Uncertain	0.049	T
BayesDel_noAF	Benign	-0.17
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.37	T
Eigen	Benign	-0.13
Eigen_PC	Benign	-0.012
FATHMM_MKL	Benign	0.68	D
LIST_S2	Benign	0.84	T
M_CAP	Uncertain	0.10	D
MetaRNN	Benign	0.28	T
MetaSVM	Uncertain	0.28	D
MutationAssessor	Benign	1.4	L
MutationTaster	Benign	0.99	D
PrimateAI	Uncertain	0.53	T
PROVEAN	Benign	-1.1	N
REVEL	Uncertain	0.30
Sift	Benign	0.041	D
Sift4G	Benign	0.20	T
Polyphen		0.29	B
Vest4		0.47
MutPred		0.44		Gain of methylation at N181 (P = 0.0055);
MVP		0.96
ClinPred		0.93	D
GERP RS		4.3
Varity_R		0.17
gMVP		0.49

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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

Other links and lift over

dbSNP: rs13392701; hg19: chr2-176958161;