Genetic Variant NM_001163678.2:c.839A>C (chr3-158098148-T-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001163678.2(SHOX2):c.839A>C(p.Asp280Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,108 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. D280G) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

SHOX2
NM_001163678.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.03

Publications

0 publications found

Variant links:

Genes affected

SHOX2 (HGNC:10854): (SHOX homeobox 2) This gene is a member of the homeobox family of genes that encode proteins containing a 60-amino acid residue motif that represents a DNA binding domain. Homeobox genes have been characterized extensively as transcriptional regulators involved in pattern formation in both invertebrate and vertebrate species. Several human genetic disorders are caused by aberrations in human homeobox genes. This locus represents a pseudoautosomal homeobox gene that is thought to be responsible for idiopathic short stature, and it is implicated in the short stature phenotype of Turner syndrome patients. This gene is considered to be a candidate gene for Cornelia de Lange syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2009]

SHOX2 Gene-Disease associations (from GenCC):

schizophrenia
Inheritance: Unknown Classification: NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae)

SHOX2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.25599417).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SHOX2	NM_001163678.2 link	c.839A>C	p.Asp280Ala	missense_variant	Exon 5 of 5	ENST00000483851.7	NP_001157150.1	O60902-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SHOX2	ENST00000483851.7 link	c.839A>C	p.Asp280Ala	missense_variant	Exon 5 of 5	2	NM_001163678.2	ENSP00000419362.1	O60902-2
SHOX2	ENST00000389589.8 link	c.947A>C	p.Asp316Ala	missense_variant	Exon 6 of 6	1		ENSP00000374240.4	O60902-3
SHOX2	ENST00000441443.6 link	c.875A>C	p.Asp292Ala	missense_variant	Exon 5 of 5	5		ENSP00000397099.3	O60902-1
SHOX2	ENST00000490689.3 link	n.1990A>C		non_coding_transcript_exon_variant	Exon 5 of 5	5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461108

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726842

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:

AN:

33460

American (AMR)

AF:

0.00

AC:

AN:

44674

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26088

East Asian (EAS)

AF:

0.00

AC:

AN:

39688

South Asian (SAS)

AF:

0.00

AC:

AN:

86196

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53280

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5746

European-Non Finnish (NFE)

AF:

9.00e-7

AC:

AN:

1111612

Other (OTH)

AF:

0.00

AC:

AN:

60364

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), 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

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.45

BayesDel_addAF

Uncertain

0.13

BayesDel_noAF

Uncertain

-0.060

CADD

Uncertain

(source)

DANN

Benign

0.91

DEOGEN2

Benign

0.17

T;.;.;.

Eigen

Benign

-0.022

Eigen_PC

Benign

0.15

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.83

T;D;T;T

M_CAP

Uncertain

0.20

MetaRNN

Benign

0.26

T;T;T;T

MetaSVM

Uncertain

0.0

MutationAssessor

Benign

0.34

N;.;.;.

PhyloP100

7.0

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-1.5

.;.;.;N

REVEL

Uncertain

0.48

Sift

Benign

0.60

.;.;.;T

Sift4G

Benign

0.56

T;T;T;T

Polyphen

0.43

B;.;P;P

Vest4

0.31

MutPred

0.36

Gain of helix (P = 0.0082);.;.;.;

MVP

0.89

MPC

0.70

ClinPred

0.77

GERP RS

5.0

Varity_R

0.24

gMVP

0.42

Mutation Taster

=67/33

polymorphism

(source)

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

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NM_001163678.2:c.839A>C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over