rs3768067

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_000081.4(LYST):c.368A>G(p.His123Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000297 in 1,609,896 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H123Y) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00035 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00029 ( 2 hom. )

Consequence

LYST
NM_000081.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: 0.619

Publications

8 publications found

Variant links:

Genes affected

LYST (HGNC:1968): (lysosomal trafficking regulator) This gene encodes a protein that regulates intracellular protein trafficking in endosomes, and may be involved in pigmentation. Mutations in this gene are associated with Chediak-Higashi syndrome, a lysosomal storage disorder. Alternative splicing results in multiple transcript variants, though the full-length nature of some of these variants has not been determined. [provided by RefSeq, Apr 2013]

LYST Gene-Disease associations (from GenCC):

Chediak-Higashi syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp, ClinGen, Labcorp Genetics (formerly Invitae), G2P
attenuated Chédiak-Higashi syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

LYST links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.006024182).

BP6

Variant 1-235810450-T-C is Benign according to our data. Variant chr1-235810450-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 296434.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000348 (53/152352) while in subpopulation EAS AF = 0.00867 (45/5188). AF 95% confidence interval is 0.00666. There are 1 homozygotes in GnomAd4. There are 31 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LYST	NM_000081.4 link	c.368A>G	p.His123Arg	missense_variant	Exon 5 of 53	ENST00000389793.7	NP_000072.2	Q99698-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LYST	ENST00000389793.7 link	c.368A>G	p.His123Arg	missense_variant	Exon 5 of 53	5	NM_000081.4	ENSP00000374443.2		Q99698-1

Frequencies

GnomAD3 genomes

AF:

0.000328

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00865

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000956

GnomAD2 exomes

AF:

0.000877

AC:

216

AN:

246214

AF XY:

0.000774

show subpopulations

Gnomad AFR exome

AF:

0.0000619

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0116

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000839

GnomAD4 exome

AF:

0.000292

AC:

425

AN:

1457544

Hom.:

Cov.:

AF XY:

0.000295

AC XY:

214

AN XY:

725080

show subpopulations

African (AFR)

AF:

0.0000303

AC:

AN:

33016

American (AMR)

AF:

0.00

AC:

AN:

43612

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25962

East Asian (EAS)

AF:

0.00927

AC:

368

AN:

39678

South Asian (SAS)

AF:

0.0000235

AC:

AN:

85266

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53188

Middle Eastern (MID)

AF:

0.000349

AC:

AN:

5734

European-Non Finnish (NFE)

AF:

0.00000630

AC:

AN:

1110932

Other (OTH)

AF:

0.000748

AC:

AN:

60156

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

110

138

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000348

AC:

AN:

152352

Hom.:

Cov.:

AF XY:

0.000416

AC XY:

AN XY:

74502

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41582

American (AMR)

AF:

0.000131

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00867

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68030

Other (OTH)

AF:

0.00237

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000740

Hom.:

Bravo

AF:

0.000563

ExAC

AF:

0.000708

AC:

Asia WGS

AF:

0.00318

AC:

AN:

3476

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Chédiak-Higashi syndrome

Benign:3

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Likely 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 likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Feb 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

May 16, 2022

Fulgent Genetics, Fulgent Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:1

Dec 12, 2017

Eurofins Ntd Llc (ga)

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Autoinflammatory syndrome

Benign:1

Jul 01, 2020

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.091

BayesDel_addAF

Benign

-0.72

BayesDel_noAF

Benign

-0.80

CADD

Benign

(source)

DANN

Benign

0.90

DEOGEN2

Benign

0.094

T;.

Eigen

Benign

-0.51

Eigen_PC

Benign

-0.42

FATHMM_MKL

Benign

0.10

LIST_S2

Benign

0.53

T;T

MetaRNN

Benign

0.0060

T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

0.34

N;.

PhyloP100

0.62

PrimateAI

Benign

0.30

PROVEAN

Benign

-1.6

N;N

REVEL

Benign

0.059

Sift

Benign

0.35

T;T

Sift4G

Benign

0.34

T;T

Polyphen

0.017

B;.

Vest4

0.065

MVP

0.38

MPC

0.10

ClinPred

0.017

GERP RS

2.1

Varity_R

0.085

gMVP

0.13

Mutation Taster

=96/4

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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rs3768067

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over