rs199910690

Positions:

chr17-58206158-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_017777.4(MKS1):c.1601G>A(p.Arg534Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000663 in 1,613,714 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000058 ( 0 hom. )

Consequence

MKS1
NM_017777.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:4B:4

Conservation

PhyloP100: 3.10

Variant links:

Genes affected

MKS1 (HGNC:7121): (MKS transition zone complex subunit 1) The protein encoded by this gene localizes to the basal body and is required for formation of the primary cilium in ciliated epithelial cells. Mutations in this gene result in Meckel syndrome type 1 and in Bardet-Biedl syndrome type 13. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2009]

MKS1 links:

MKS1 (HGNC:):

MKS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.016512722).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MKS1	NM_017777.4 linkuse as main transcript	c.1601G>A	p.Arg534Gln	missense_variant	18/18	ENST00000393119.7	NP_060247.2	Q9NXB0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MKS1	ENST00000393119.7 linkuse as main transcript	c.1601G>A	p.Arg534Gln	missense_variant	18/18	1	NM_017777.4	ENSP00000376827.2		Q9NXB0-1

Frequencies

GnomAD3 genomes

AF:

0.000145

AC:

AN:

151950

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00367

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000225

AC:

AN:

248576

Hom.:

AF XY:

0.000215

AC XY:

AN XY:

134998

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00301

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000887

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000582

AC:

AN:

1461646

Hom.:

Cov.:

AF XY:

0.0000550

AC XY:

AN XY:

727120

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00181

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000899

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.000145

AC:

AN:

152068

Hom.:

Cov.:

AF XY:

0.000135

AC XY:

AN XY:

74334

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00368

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.000128

ExAC

AF:

0.000281

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:4Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Sep 21, 2018	This variant is associated with the following publications: (PMID: 24608809) -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Feb 22, 2018	- -

Bardet-Biedl syndrome 13

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jan 01, 2014

- -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Nov 24, 2021

Variant summary: MKS1 c.1601G>A (p.Arg534Gln) results in a conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00023 in 248576 control chromosomes, predominantly at a frequency of 0.003 within the East Asian subpopulation in the gnomAD database. The observed variant frequency within East Asian control individuals in the gnomAD database is approximately 2.7 fold of the estimated maximal expected allele frequency for a pathogenic variant in MKS1 causing Meckel Syndrome Type 1 phenotype (0.0011), strongly suggesting that the variant is a benign polymorphism found primarily in populations of East Asian origin. c.1601G>A has been reported in the literature as a compound heterozygous genotype in at-least two comprehensively genotyped individuals with features of Bardet-Biedl syndrome (BBS) or a reported diagnosis of Joubert Syndrome 28;Bardet-Biedl Syndrome 13 (example, Xing_2014, Sun_2018) and as a non-informative genotype in one individual among of cohort of individuals with microcephaly analyzed by whole exome sequencing (example, Lee_2020). These data indicate that the variant may be associated with disease but do not provide unequivocal conclusions about the association of this variant with Meckel Syndrome Type 1 phenotype. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Four clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation (VUS, n=1; likely benign, n=3). Based on the evidence outlined above, the variant was classified as VUS-possibly benign. -

Microcephaly

Uncertain:1

Uncertain significance, no assertion criteria provided

research

Department of Pediatrics, Samsung Medical Center, Samsung Medical Center

- -

Bardet-Biedl syndrome 13;C3714506:Meckel syndrome, type 1;C4310705:Joubert syndrome 28

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

New York Genome Center

Dec 10, 2021

- -

Meckel-Gruber syndrome;C0431399:Familial aplasia of the vermis

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 25, 2024

- -

Meckel syndrome, type 1

Benign:1

Likely benign, no assertion criteria provided

clinical testing

Natera, Inc.

Sep 16, 2020

- -

MKS1-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Sep 12, 2024

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.11

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.37

T;.

Eigen

Uncertain

0.59

Eigen_PC

Uncertain

0.58

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.96

D;D

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.017

T;T

MetaSVM

Uncertain

-0.12

PrimateAI

Benign

0.47

PROVEAN

Benign

-1.9

N;N

REVEL

Pathogenic

0.71

Sift

Benign

0.15

T;T

Sift4G

Uncertain

0.015

D;D

Polyphen

1.0

D;.

Vest4

0.72

MVP

0.89

MPC

0.89

ClinPred

0.21

GERP RS

5.3

Varity_R

0.26

gMVP

0.56

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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