dbSNP rs4716913: SHH:p.Pro10Pro (chr7-155806720-G-A) – ACMG Classification: Benign (-21 pts)

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_001310462.2(SHH):c.30C>T(p.Pro10Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.001 in 844,340 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0036 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00043 ( 3 hom. )

Consequence

SHH
NM_001310462.2 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 0.625

Publications

3 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: PanelApp Australia, G2P
polydactyly of a triphalangeal thumb
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, G2P
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: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.84).

BP6

Variant 7-155806720-G-A is Benign according to our data. Variant chr7-155806720-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 586570.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.625 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00358 (546/152330) while in subpopulation AFR AF = 0.0127 (527/41574). AF 95% confidence interval is 0.0118. There are 1 homozygotes in GnomAd4. There are 247 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 3 AD,AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001310462.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SHH	NM_000193.4	MANE Select	c.301-163C>T		intron	N/A	NP_000184.1	Q15465
SHH	NM_001310462.2		c.30C>T	p.Pro10Pro	synonymous	Exon 2 of 4	NP_001297391.1
SHH	NR_132318.2		n.291C>T		non_coding_transcript_exon	Exon 2 of 5

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SHH	ENST00000430104.5	TSL:1	c.30C>T	p.Pro10Pro	synonymous	Exon 2 of 4	ENSP00000396621.1	C9JC48
SHH	ENST00000297261.7	TSL:1 MANE Select	c.301-163C>T		intron	N/A	ENSP00000297261.2	Q15465
SHH	ENST00000435425.1	TSL:1	n.30C>T		non_coding_transcript_exon	Exon 2 of 5	ENSP00000413871.1	F8WEH4

Frequencies

GnomAD3 genomes

AF:

0.00357

AC:

544

AN:

152212

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0127

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00105

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:

0.0000147

Gnomad OTH

AF:

0.000956

GnomAD2 exomes

AF:

0.000791

AC:

119

AN:

150388

AF XY:

0.000626

show subpopulations

Gnomad AFR exome

AF:

0.0139

Gnomad AMR exome

AF:

0.000490

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:

0.000470

GnomAD4 exome

AF:

0.000432

AC:

299

AN:

692010

Hom.:

Cov.:

AF XY:

0.000350

AC XY:

128

AN XY:

365452

show subpopulations

African (AFR)

AF:

0.0130

AC:

235

AN:

18096

American (AMR)

AF:

0.000634

AC:

AN:

34718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

20284

East Asian (EAS)

AF:

0.00

AC:

AN:

32978

South Asian (SAS)

AF:

0.0000155

AC:

AN:

64612

European-Finnish (FIN)

AF:

0.00

AC:

AN:

47824

Middle Eastern (MID)

AF:

0.000784

AC:

AN:

3828

European-Non Finnish (NFE)

AF:

0.00000230

AC:

AN:

434950

Other (OTH)

AF:

0.00107

AC:

AN:

34720

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.514

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.00358

AC:

546

AN:

152330

Hom.:

Cov.:

AF XY:

0.00332

AC XY:

247

AN XY:

74480

show subpopulations

African (AFR)

AF:

0.0127

AC:

527

AN:

41574

American (AMR)

AF:

0.00105

AC:

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68038

Other (OTH)

AF:

0.000946

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

122

152

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:

0.00304

Hom.:

Bravo

AF:

0.00405

Asia WGS

AF:

0.00202

AC:

AN:

3478

ClinVar

ClinVar submissions as Germline

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.84

CADD

Benign

6.7

(source)

DANN

Benign

0.68

PhyloP100

0.63

Mutation Taster

=100/0

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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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

Computational scores

Splicing

Publications

Other links and lift over