rs368473756

Positions:

chr11-71444088-C-T

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_001360.3(DHCR7):c.226G>A(p.Val76Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000663 in 1,613,488 control chromosomes in the GnomAD database, including 18 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00037 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00069 ( 17 hom. )

Consequence

DHCR7
NM_001360.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:5

Conservation

PhyloP100: 1.19

Variant links:

Genes affected

DHCR7 (HGNC:2860): (7-dehydrocholesterol reductase) This gene encodes an enzyme that removes the C(7-8) double bond in the B ring of sterols and catalyzes the conversion of 7-dehydrocholesterol to cholesterol. This gene is ubiquitously expressed and its transmembrane protein localizes to the endoplasmic reticulum membrane and nuclear outer membrane. Mutations in this gene cause Smith-Lemli-Opitz syndrome (SLOS); a syndrome that is metabolically characterized by reduced serum cholesterol levels and elevated serum 7-dehydrocholesterol levels and phenotypically characterized by cognitive disability, facial dysmorphism, syndactyly of second and third toes, and holoprosencephaly in severe cases to minimal physical abnormalities and near-normal intelligence in mild cases. Alternative splicing results in multiple transcript variants that encode the same protein.[provided by RefSeq, Aug 2009]

DHCR7 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0052120686).

BS2

High Homozygotes in GnomAdExome4 at 17 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
DHCR7	NM_001360.3 linkuse as main transcript	c.226G>A	p.Val76Ile	missense_variant	4/9	ENST00000355527.8	NP_001351.2
DHCR7	NM_001163817.2 linkuse as main transcript	c.226G>A	p.Val76Ile	missense_variant	4/9		NP_001157289.1
DHCR7	XM_011544777.3 linkuse as main transcript	c.226G>A	p.Val76Ile	missense_variant	4/9		XP_011543079.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DHCR7	ENST00000355527.8 linkuse as main transcript	c.226G>A	p.Val76Ile	missense_variant	4/9	1	NM_001360.3	ENSP00000347717	P1

Frequencies

GnomAD3 genomes

AF:

0.000375

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.0114

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.00139

AC:

347

AN:

249404

Hom.:

AF XY:

0.00202

AC XY:

273

AN XY:

134838

show subpopulations

Gnomad AFR exome

AF:

0.000188

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0112

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000657

GnomAD4 exome

AF:

0.000693

AC:

1013

AN:

1461208

Hom.:

Cov.:

AF XY:

0.00107

AC XY:

775

AN XY:

726770

show subpopulations

Gnomad4 AFR exome

AF:

0.000179

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0110

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000809

Gnomad4 OTH exome

AF:

0.000795

GnomAD4 genome

AF:

0.000374

AC:

AN:

152280

Hom.:

Cov.:

AF XY:

0.000551

AC XY:

AN XY:

74458

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.0114

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000474

Alfa

AF:

0.000127

Hom.:

Bravo

AF:

0.0000982

ExAC

AF:

0.00160

AC:

194

Asia WGS

AF:

0.00606

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:5

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Smith-Lemli-Opitz syndrome

Uncertain:1Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Apr 28, 2017	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -
Likely benign, no assertion criteria provided	clinical testing	Natera, Inc.	Apr 02, 2018	- -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Jul 31, 2017

- -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 01, 2019

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

not provided

Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Dec 23, 2020

This variant is associated with the following publications: (PMID: 26350204) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.071

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.15

CADD

Benign

4.4

DANN

Benign

0.86

DEOGEN2

Benign

0.32

T;T;.;T;T;T;.;T

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.070

LIST_S2

Benign

0.29

.;T;T;T;T;T;T;T

MetaRNN

Benign

0.0052

T;T;T;T;T;T;T;T

MetaSVM

Uncertain

-0.052

MutationAssessor

Benign

0.34

N;N;.;.;.;.;.;.

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.30

PROVEAN

Benign

0.10

N;N;N;N;N;N;N;N

REVEL

Benign

0.27

Sift

Benign

0.39

T;T;T;T;T;T;T;T

Sift4G

Benign

0.40

T;T;.;.;T;.;.;T

Polyphen

0.0030

B;B;.;.;.;.;.;.

Vest4

0.060

MVP

0.63

MPC

0.096

ClinPred

0.46

GERP RS

0.10

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.014

gMVP

0.22

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over