21-46195731-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 1P and 5B. PP5BS1_SupportingBS2

The NM_002340.6(LSS):c.1762G>A(p.Gly588Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000744 in 1,613,802 control chromosomes in the GnomAD database, including 2 homozygotes. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000076 ( 2 hom. )

Consequence

LSS
NM_002340.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2U:1

Conservation

PhyloP100: 7.48

Publications

12 publications found

Variant links:

Genes affected

LSS (HGNC:6708): (lanosterol synthase) The protein encoded by this gene catalyzes the conversion of (S)-2,3 oxidosqualene to lanosterol. The encoded protein is a member of the terpene cyclase/mutase family and catalyzes the first step in the biosynthesis of cholesterol, steroid hormones, and vitamin D. Alternative splicing results in multiple transcript variants encoding different isoforms.[provided by RefSeq, Feb 2009]

LSS Gene-Disease associations (from GenCC):

alopecia-intellectual disability syndrome 4
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
cataract 44
Inheritance: AR Classification: STRONG, LIMITED Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
hypotrichosis 14
Inheritance: AR Classification: MODERATE Submitted by: Ambry Genetics
hypotrichosis simplex
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
total early-onset cataract
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
autosomal recessive palmoplantar keratoderma and congenital alopecia
Inheritance: AR Classification: LIMITED Submitted by: G2P

LSS links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

PP5

Variant 21-46195731-C-T is Pathogenic according to our data. Variant chr21-46195731-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 221226.

BS1

Variant frequency is greater than expected in population sas. GnomAdExome4 allele frequency = 0.0000759 (111/1461528) while in subpopulation SAS AF = 0.00105 (91/86258). AF 95% confidence interval is 0.000879. There are 2 homozygotes in GnomAdExome4. There are 83 alleles in the male GnomAdExome4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High Homozygotes in GnomAdExome4 at 2 AR,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002340.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
LSS	NM_002340.6	MANE Select	c.1762G>A	p.Gly588Ser	missense	Exon 19 of 22	NP_002331.3
LSS	NM_001001438.3		c.1762G>A	p.Gly588Ser	missense	Exon 19 of 23	NP_001001438.1	P48449-1
LSS	NM_001145436.2		c.1729G>A	p.Gly577Ser	missense	Exon 19 of 22	NP_001138908.1	P48449-3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
LSS	ENST00000397728.8	TSL:1 MANE Select	c.1762G>A	p.Gly588Ser	missense	Exon 19 of 22	ENSP00000380837.2	P48449-1
LSS	ENST00000356396.8	TSL:1	c.1762G>A	p.Gly588Ser	missense	Exon 19 of 23	ENSP00000348762.3	P48449-1
LSS	ENST00000457828.6	TSL:1	c.1522G>A	p.Gly508Ser	missense	Exon 18 of 21	ENSP00000409191.2	P48449-2

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152156

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00124

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000140

AC:

AN:

250896

AF XY:

0.000184

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000217

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000441

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000759

AC:

111

AN:

1461528

Hom.:

Cov.:

AF XY:

0.000114

AC XY:

AN XY:

727002

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.000101

AC:

AN:

39700

South Asian (SAS)

AF:

0.00105

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53076

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000719

AC:

AN:

1111996

Other (OTH)

AF:

0.000132

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.439

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152274

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74448

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41564

American (AMR)

AF:

0.00

AC:

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5170

South Asian (SAS)

AF:

0.00124

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68012

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

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:

0.0000540

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.000157

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Cataract 44 (1)

Cataract 44;C5394241:Alopecia-intellectual disability syndrome 4 (1)

Hypotrichosis 14 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.33

BayesDel_addAF

Benign

0.0020

BayesDel_noAF

Pathogenic

0.16

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.20

Eigen

Pathogenic

0.97

Eigen_PC

Pathogenic

0.91

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

M_CAP

Benign

0.034

MetaRNN

Uncertain

0.64

MetaSVM

Benign

-0.42

MutationAssessor

Pathogenic

3.4

PhyloP100

7.5

PrimateAI

Uncertain

0.78

PROVEAN

Uncertain

-2.5

REVEL

Uncertain

0.47

Sift

Uncertain

0.0070

Sift4G

Uncertain

0.0080

Polyphen

1.0

Vest4

0.93

MutPred

0.75

Gain of glycosylation at G588 (P = 0.0696)

MVP

0.70

MPC

0.88

ClinPred

0.79

GERP RS

5.6

RBP_binding_hub_radar

1.0

RBP_regulation_power_radar

2.1

Varity_R

0.85

gMVP

0.88

Mutation Taster

=3/97

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

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