rs3731881

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_002181.4(IHH):​c.753T>C​(p.Pro251Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.634 in 1,613,762 control chromosomes in the GnomAD database, including 330,924 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.58 ( 26809 hom., cov: 34)
Exomes 𝑓: 0.64 ( 304115 hom. )

Consequence

IHH
NM_002181.4 synonymous

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: -1.12
Variant links:
Genes affected
IHH (HGNC:5956): (Indian hedgehog signaling molecule) This gene encodes a member of the hedgehog family of proteins. The encoded preproprotein is proteolytically processed to generate multiple protein products, including an N-terminal fragment that is involved in signaling. Hedgehog family proteins are essential secreted signaling molecules that regulate a variety of developmental processes including growth, patterning and morphogenesis. The protein encoded by this gene specifically plays a role in bone growth and differentiation. Mutations in this gene are the cause of brachydactyly type A1, which is characterized by shortening or malformation of the fingers and toes. Mutations in this gene are also the cause of acrocapitofemoral dysplasia. [provided by RefSeq, Nov 2015]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.87).
BP6
Variant 2-219055690-A-G is Benign according to our data. Variant chr2-219055690-A-G is described in ClinVar as [Benign]. Clinvar id is 334440.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr2-219055690-A-G is described in Lovd as [Benign].
BP7
Synonymous conserved (PhyloP=-1.12 with no splicing effect.
BA1
GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.661 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
IHHNM_002181.4 linkc.753T>C p.Pro251Pro synonymous_variant Exon 3 of 3 ENST00000295731.7 NP_002172.2 Q14623

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
IHHENST00000295731.7 linkc.753T>C p.Pro251Pro synonymous_variant Exon 3 of 3 1 NM_002181.4 ENSP00000295731.5 Q14623

Frequencies

GnomAD3 genomes
AF:
0.582
AC:
88538
AN:
152034
Hom.:
26812
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.461
Gnomad AMI
AF:
0.525
Gnomad AMR
AF:
0.536
Gnomad ASJ
AF:
0.625
Gnomad EAS
AF:
0.301
Gnomad SAS
AF:
0.541
Gnomad FIN
AF:
0.737
Gnomad MID
AF:
0.595
Gnomad NFE
AF:
0.666
Gnomad OTH
AF:
0.560
GnomAD3 exomes
AF:
0.596
AC:
149572
AN:
250806
Hom.:
46269
AF XY:
0.604
AC XY:
81955
AN XY:
135726
show subpopulations
Gnomad AFR exome
AF:
0.455
Gnomad AMR exome
AF:
0.510
Gnomad ASJ exome
AF:
0.632
Gnomad EAS exome
AF:
0.312
Gnomad SAS exome
AF:
0.556
Gnomad FIN exome
AF:
0.742
Gnomad NFE exome
AF:
0.669
Gnomad OTH exome
AF:
0.595
GnomAD4 exome
AF:
0.640
AC:
935206
AN:
1461610
Hom.:
304115
Cov.:
77
AF XY:
0.638
AC XY:
464204
AN XY:
727124
show subpopulations
Gnomad4 AFR exome
AF:
0.450
Gnomad4 AMR exome
AF:
0.510
Gnomad4 ASJ exome
AF:
0.634
Gnomad4 EAS exome
AF:
0.296
Gnomad4 SAS exome
AF:
0.559
Gnomad4 FIN exome
AF:
0.735
Gnomad4 NFE exome
AF:
0.667
Gnomad4 OTH exome
AF:
0.609
GnomAD4 genome
AF:
0.582
AC:
88555
AN:
152152
Hom.:
26809
Cov.:
34
AF XY:
0.583
AC XY:
43341
AN XY:
74384
show subpopulations
Gnomad4 AFR
AF:
0.460
Gnomad4 AMR
AF:
0.536
Gnomad4 ASJ
AF:
0.625
Gnomad4 EAS
AF:
0.301
Gnomad4 SAS
AF:
0.542
Gnomad4 FIN
AF:
0.737
Gnomad4 NFE
AF:
0.666
Gnomad4 OTH
AF:
0.555
Alfa
AF:
0.635
Hom.:
50650
Bravo
AF:
0.557
Asia WGS
AF:
0.340
AC:
1186
AN:
3478
EpiCase
AF:
0.652
EpiControl
AF:
0.657

ClinVar

Significance: Benign
Submissions summary: Benign:8
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:3
-
Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen
Significance: Benign
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

-
Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center
Significance: Benign
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

Jul 27, 2018
Eurofins Ntd Llc (ga)
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

not provided Benign:3
Dec 02, 2018
GeneDx
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant is associated with the following publications: (PMID: 12525541, 14651602) -

Feb 03, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

-
Breakthrough Genomics, Breakthrough Genomics
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: not provided

- -

Acrocapitofemoral dysplasia Benign:1
Aug 10, 2021
Genome-Nilou Lab
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Brachydactyly type A1 Benign:1
Jan 12, 2018
Illumina Laboratory Services, Illumina
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.87
CADD
Benign
1.3
DANN
Benign
0.60

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.

Other links and lift over

dbSNP: rs3731881; hg19: chr2-219920412; COSMIC: COSV55392737; COSMIC: COSV55392737; API