7-155800141-C-T

Variant names:

• chr7-155800141-C-T
• rs148863769
• ENST00000430104.5:c.406G>A

Variant summary

Our verdict is Benign. The variant received -16 ACMG points: 0P and 16B. BP4_Strong BP6_Very_Strong BS1

The NM_000193.4(SHH):​c.*2759G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000649 in 471,590 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0016 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00020 (0 hom.)
• Consequence: SHH NM_000193.4 3_prime_UTR
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -0.956
• Publications: 5 publications found

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

ACMG classification

Our verdict: Benign. The variant received -16 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.004433453).
• BP6: Variant 7-155800141-C-T is Benign according to our data. Variant chr7-155800141-C-T is described in ClinVar as [Benign]. Clinvar id is 586571.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00158 (241/152348) while in subpopulation AFR AF = 0.00556 (231/41582). AF 95% confidence interval is 0.00497. There are 0 homozygotes in GnomAd4. There are 128 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SHH	NM_000193.4	c.*2759G>A		3_prime_UTR_variant	Exon 3 of 3	ENST00000297261.7	NP_000184.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SHH	ENST00000297261.7	c.*2759G>A		3_prime_UTR_variant	Exon 3 of 3	1	NM_000193.4	ENSP00000297261.2

Frequencies

GnomAD3 genomes AF: 0.00158 AC: 241 AN: 152230 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00557

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000262

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: 0.0000882

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000325 AC: 49 AN: 150898 AF XY: 0.000260

Gnomad AFR exome AF: 0.00514

Gnomad AMR exome AF: 0.000488

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000178

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000204 AC: 65 AN: 319242 Hom.: 0 Cov.: 0 AF XY: 0.000144 AC XY: 26 AN XY: 180304

African (AFR) AF: 0.00544 AC: 47 AN: 8634

American (AMR) AF: 0.000476 AC: 13 AN: 27290

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 10790

East Asian (EAS) AF: 0.00 AC: 0 AN: 9216

South Asian (SAS) AF: 0.00 AC: 0 AN: 59744

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 27182

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2788

European-Non Finnish (NFE) AF: 0.0000251 AC: 4 AN: 159134

Other (OTH) AF: 0.0000691 AC: 1 AN: 14464

GnomAD4 genome AF: 0.00158 AC: 241 AN: 152348 Hom.: 0 Cov.: 33 AF XY: 0.00172 AC XY: 128 AN XY: 74492

African (AFR) AF: 0.00556 AC: 231 AN: 41582

American (AMR) AF: 0.000261 AC: 4 AN: 15308

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10614

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000882 AC: 6 AN: 68032

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.00239 Hom.: 0

Bravo AF: 0.00188

ExAC AF: 0.000261 AC: 6

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

-

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Dec 08, 2017

Athena Diagnostics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.43	T
BayesDel_noAF	Benign	-0.39
CADD	Benign	1.9
DANN	Benign	0.64
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.033	N
LIST_S2	Benign	0.31	T
MetaRNN	Benign	0.0044	T
MetaSVM	Uncertain	0.72	D
PhyloP100		-0.96
PROVEAN	Benign	-1.7	N
REVEL	Benign	0.16
Sift	Benign	0.39	T
Sift4G	Uncertain	0.042	D
Polyphen		0.013	B
MutPred		0.48		Gain of MoRF binding (P = 0.0141);
MVP		0.66
ClinPred		0.0020	T
GERP RS		-2.6
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs148863769; hg19: chr7-155592835;