Genetic Variant SC5D:p.Ala61Thr (chr11-121303556-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_006918.5(SC5D):c.181G>A(p.Ala61Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,010 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

SC5D
NM_006918.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.461

Publications

0 publications found

Variant links:

Genes affected

SC5D (HGNC:10547): (sterol-C5-desaturase) This gene encodes an enzyme of cholesterol biosynthesis. The encoded protein catalyzes the conversion of lathosterol into 7-dehydrocholesterol. Mutations in this gene have been associated with lathosterolosis. Alternatively spliced transcript variants encoding the same protein have been described. [provided by RefSeq, Jul 2008]

SC5D Gene-Disease associations (from GenCC):

lathosterolosis
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P

SC5D links:

ENSG00000299150 (HGNC:):

ENSG00000299150 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.058763176).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SC5D	NM_006918.5 link	c.181G>A	p.Ala61Thr	missense_variant	Exon 2 of 5	ENST00000264027.9	NP_008849.2	O75845A0A024R3G4
SC5D	NM_001024956.3 link	c.181G>A	p.Ala61Thr	missense_variant	Exon 2 of 5		NP_001020127.1	O75845A0A024R3G4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SC5D	ENST00000264027.9 link	c.181G>A	p.Ala61Thr	missense_variant	Exon 2 of 5	1	NM_006918.5	ENSP00000264027.4		O75845

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461010

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726858

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33454

American (AMR)

AF:

0.00

AC:

AN:

44702

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.00

AC:

AN:

39676

South Asian (SAS)

AF:

0.00

AC:

AN:

86190

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53406

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111318

Other (OTH)

AF:

0.00

AC:

AN:

60366

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Lathosterolosis

Uncertain:1

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.066

BayesDel_addAF

Benign

-0.081

BayesDel_noAF

Benign

-0.35

CADD

Benign

8.1

(source)

DANN

Benign

0.86

DEOGEN2

Benign

0.26

T;T;T;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-0.91

FATHMM_MKL

Benign

0.083

LIST_S2

Uncertain

0.92

.;D;D;D

M_CAP

Benign

0.019

MetaRNN

Benign

0.059

T;T;T;T

MetaSVM

Benign

-0.91

MutationAssessor

Benign

0.14

N;.;.;N

PhyloP100

0.46

PrimateAI

Benign

0.27

PROVEAN

Benign

0.59

N;N;N;N

REVEL

Benign

0.19

Sift

Benign

0.71

T;T;T;T

Sift4G

Benign

0.58

T;T;T;T

Polyphen

0.0010

B;B;B;B

Vest4

0.051

MutPred

0.30

Loss of ubiquitination at K64 (P = 0.1179);Loss of ubiquitination at K64 (P = 0.1179);Loss of ubiquitination at K64 (P = 0.1179);Loss of ubiquitination at K64 (P = 0.1179);

MVP

0.62

MPC

0.13

ClinPred

0.064

GERP RS

-0.45

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.033

gMVP

0.36

Mutation Taster

=95/5

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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chr11-121303556-G-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over