7-155803142-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PP2PP3_Strong

The ENST00000297261.7(SHH):c.1147G>A(p.Ala383Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000565 in 1,416,984 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. A383A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000047 ( 0 hom. )

Consequence

SHH
ENST00000297261.7 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts P:2U:7

Conservation

PhyloP100: 0.146

Publications

5 publications found

Variant links:

Genes affected

SHH (HGNC:10848): (sonic hedgehog signaling molecule) This gene encodes a protein that is instrumental in patterning the early embryo. It has been implicated as the key inductive signal in patterning of the ventral neural tube, the anterior-posterior limb axis, and the ventral somites. Of three human proteins showing sequence and functional similarity to the sonic hedgehog protein of Drosophila, this protein is the most similar. The protein is made as a precursor that is autocatalytically cleaved; the N-terminal portion is soluble and contains the signalling activity while the C-terminal portion is involved in precursor processing. More importantly, the C-terminal product covalently attaches a cholesterol moiety to the N-terminal product, restricting the N-terminal product to the cell surface and preventing it from freely diffusing throughout the developing embryo. Defects in this protein or in its signalling pathway are a cause of holoprosencephaly (HPE), a disorder in which the developing forebrain fails to correctly separate into right and left hemispheres. HPE is manifested by facial deformities. It is also thought that mutations in this gene or in its signalling pathway may be responsible for VACTERL syndrome, which is characterized by vertebral defects, anal atresia, tracheoesophageal fistula with esophageal atresia, radial and renal dysplasia, cardiac anomalies, and limb abnormalities. Additionally, mutations in a long range enhancer located approximately 1 megabase upstream of this gene disrupt limb patterning and can result in preaxial polydactyly. [provided by RefSeq, Jul 2008]

SHH Gene-Disease associations (from GenCC):

holoprosencephaly 3
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
microphthalmia, isolated, with coloboma 5
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, PanelApp Australia
polydactyly of a triphalangeal thumb
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, Orphanet
solitary median maxillary central incisor syndrome
Inheritance: AD Classification: DEFINITIVE, MODERATE Submitted by: G2P, Ambry Genetics
skeletal system disorder
Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
autosomal dominant preaxial polydactyly-upperback hypertrichosis syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
hypoplastic tibiae-postaxial polydactyly syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
microphthalmia, isolated, with coloboma
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
syndactyly type 4
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
triphalangeal thumb-polysyndactyly syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
holoprosencephaly
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

SHH links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 26 curated pathogenic missense variants (we use a threshold of 10). The gene has 8 curated benign missense variants. Gene score misZ: 2.9479 (below the threshold of 3.09). Trascript score misZ: 0.49525 (below the threshold of 3.09). GenCC associations: The gene is linked to polydactyly of a triphalangeal thumb, microphthalmia, isolated, with coloboma 5, solitary median maxillary central incisor syndrome, holoprosencephaly 3, skeletal system disorder, hypoplastic tibiae-postaxial polydactyly syndrome, holoprosencephaly, syndactyly type 4, microphthalmia, isolated, with coloboma, autosomal dominant preaxial polydactyly-upperback hypertrichosis syndrome, triphalangeal thumb-polysyndactyly syndrome.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.968

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000297261.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SHH	NM_000193.4	MANE Select	c.1147G>A	p.Ala383Thr	missense	Exon 3 of 3	NP_000184.1
SHH	NM_001310462.2		c.302-2897G>A		intron	N/A	NP_001297391.1
SHH	NR_132318.2		n.563-2475G>A		intron	N/A

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SHH	ENST00000297261.7	TSL:1 MANE Select	c.1147G>A	p.Ala383Thr	missense	Exon 3 of 3	ENSP00000297261.2
SHH	ENST00000430104.5	TSL:1	c.302-2897G>A		intron	N/A	ENSP00000396621.1
SHH	ENST00000435425.1	TSL:1	n.302-2545G>A		intron	N/A	ENSP00000413871.1

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151738

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000144

AC:

AN:

69260

AF XY:

0.00

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:

0.00

Gnomad OTH exome

AF:

0.000535

GnomAD4 exome

AF:

0.00000474

AC:

AN:

1265246

Hom.:

Cov.:

AF XY:

0.00000483

AC XY:

AN XY:

620592

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

25938

American (AMR)

AF:

0.00

AC:

AN:

21938

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

21312

East Asian (EAS)

AF:

0.00

AC:

AN:

27148

South Asian (SAS)

AF:

0.00

AC:

AN:

60548

European-Finnish (FIN)

AF:

0.00

AC:

AN:

38110

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4708

European-Non Finnish (NFE)

AF:

0.00000493

AC:

AN:

1013882

Other (OTH)

AF:

0.0000194

AC:

AN:

51662

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.542

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151738

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74122

show subpopulations

African (AFR)

AF:

0.0000483

AC:

AN:

41402

American (AMR)

AF:

0.00

AC:

AN:

15214

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3462

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10438

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67902

Other (OTH)

AF:

0.00

AC:

AN:

2082

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.550

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000141

AC:

ClinVar

ClinVar submissions as Germline

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Holoprosencephaly 3 (4)

Schizencephaly (2)

Microphthalmia, isolated, with coloboma 5 (1)

not provided (1)

Solitary median maxillary central incisor syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Pathogenic

0.28

BayesDel_noAF

Pathogenic

0.16

CADD

Uncertain

(source)

DANN

Uncertain

0.98

DEOGEN2

Pathogenic

0.83

Eigen

Benign

0.016

Eigen_PC

Benign

-0.036

FATHMM_MKL

Benign

0.64

LIST_S2

Benign

0.65

M_CAP

Pathogenic

0.99

MetaRNN

Pathogenic

0.97

MetaSVM

Pathogenic

1.1

MutationAssessor

Uncertain

2.3

PhyloP100

0.15

PrimateAI

Pathogenic

0.87

PROVEAN

Benign

-1.0

REVEL

Pathogenic

0.73

Sift

Benign

0.34

Sift4G

Benign

0.35

Polyphen

0.87

Vest4

0.76

MutPred

0.85

Gain of glycosylation at A383 (P = 0.0346)

MVP

1.0

ClinPred

0.31

GERP RS

3.4

Varity_R

0.41

gMVP

0.54

Mutation Taster

=24/76

disease causing

(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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over