12-54029933-G-A

Position:

chr12-54029933-G-A

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_004503.4(HOXC6):c.679G>A(p.Glu227Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000128 in 1,596,360 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

HOXC6
NM_004503.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.74

Variant links:

Genes affected

HOXC6 (HGNC:5128): (homeobox C6) This gene belongs to the homeobox family, members of which 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, which are located on different chromosomes and consist of 9 to 11 genes arranged in tandem. This gene, HOXC6, is one of several HOXC genes located in a cluster on chromosome 12. Three genes, HOXC5, HOXC4 and HOXC6, share a 5' non-coding exon. Transcripts may include the shared exon spliced to the gene-specific exons, or they may include only the gene-specific exons. Alternatively spliced transcript variants encoding different isoforms have been identified for HOXC6. Transcript variant two includes the shared exon, and transcript variant one includes only gene-specific exons. [provided by RefSeq, Jul 2008]

HOXC6 links:

HOXC4 (HGNC:5126): (homeobox C4) 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, which are located on different chromosomes and consist of 9 to 11 genes arranged in tandem. This gene, HOXC4, is one of several homeobox HOXC genes located in a cluster on chromosome 12. Three genes, HOXC5, HOXC4 and HOXC6, share a 5' non-coding exon. Transcripts may include the shared exon spliced to the gene-specific exons, or they may include only the gene-specific exons. Two alternatively spliced variants that encode the same protein have been described for HOXC4. Transcript variant one includes the shared exon, and transcript variant two includes only gene-specific exons. [provided by RefSeq, Jul 2008]

HOXC4 links:

ENSG00000273049 (HGNC:):

ENSG00000273049 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.010644585).

BS2

High AC in GnomAd4 at 21 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HOXC6	NM_004503.4 linkuse as main transcript	c.679G>A	p.Glu227Lys	missense_variant	2/2	ENST00000243108.5	NP_004494.1	P09630-1
HOXC6	NM_153693.5 linkuse as main transcript	c.433G>A	p.Glu145Lys	missense_variant	3/3		NP_710160.1	P09630-2
HOXC4	NM_014620.6 linkuse as main transcript	c.-124+12519G>A		intron_variant			NP_055435.2	P09017A0A024RB51Q86TF7
HOXC5	NR_003084.3 linkuse as main transcript	n.528-4345G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HOXC6	ENST00000243108.5 linkuse as main transcript	c.679G>A	p.Glu227Lys	missense_variant	2/2	1	NM_004503.4	ENSP00000243108.4		P09630-1
ENSG00000273049	ENST00000513209.1 linkuse as main transcript	c.167-4345G>A		intron_variant		3		ENSP00000476742.1		V9GYH0

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152108

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00490

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000183

AC:

AN:

235178

Hom.:

AF XY:

0.000173

AC XY:

AN XY:

127216

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000125

Gnomad ASJ exome

AF:

0.00384

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000188

Gnomad OTH exome

AF:

0.000531

GnomAD4 exome

AF:

0.000127

AC:

183

AN:

1444252

Hom.:

Cov.:

AF XY:

0.000135

AC XY:

AN XY:

717308

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000120

Gnomad4 ASJ exome

AF:

0.00453

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000118

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000336

Gnomad4 OTH exome

AF:

0.000404

GnomAD4 genome

AF:

0.000138

AC:

AN:

152108

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74302

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00490

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000243

Hom.:

Bravo

AF:

0.000144

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000989

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

Oct 30, 2023

The c.679G>A (p.E227K) alteration is located in exon 2 (coding exon 2) of the HOXC6 gene. This alteration results from a G to A substitution at nucleotide position 679, causing the glutamic acid (E) at amino acid position 227 to be replaced by a lysine (K). 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

Benign

0.10

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.16

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.15

.;T

Eigen

Benign

-0.25

Eigen_PC

Benign

-0.020

FATHMM_MKL

Uncertain

0.92

LIST_S2

Benign

0.85

T;T

M_CAP

Benign

0.043

MetaRNN

Benign

0.011

T;T

MetaSVM

Uncertain

-0.14

MutationAssessor

Benign

0.55

.;N

PrimateAI

Uncertain

0.58

PROVEAN

Benign

-1.1

N;N

REVEL

Benign

0.19

Sift

Benign

0.077

T;D

Sift4G

Uncertain

0.039

D;T

Polyphen

0.015

.;B

Vest4

0.18

MVP

0.71

MPC

0.90

ClinPred

0.027

GERP RS

5.0

Varity_R

0.21

gMVP

0.39

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