rs143889976

Positions:

chrX-147944969-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001185075.2(FMR1):c.1301C>T(p.Ala434Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00166 in 1,204,544 control chromosomes in the GnomAD database, including 4 homozygotes. There are 668 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 10/14 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0012 ( 0 hom., 39 hem., cov: 22)

Exomes 𝑓: 0.0017 ( 4 hom. 629 hem. )

Consequence

FMR1
NM_001185075.2 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 0.707

Variant links:

Genes affected

FMR1 (HGNC:3775): (fragile X messenger ribonucleoprotein 1) The protein encoded by this gene binds RNA and is associated with polysomes. The encoded protein may be involved in mRNA trafficking from the nucleus to the cytoplasm. A trinucleotide repeat (CGG) in the 5' UTR is normally found at 6-53 copies, but an expansion to 55-230 repeats is the cause of fragile X syndrome. Expansion of the trinucleotide repeat may also cause one form of premature ovarian failure (POF1). Multiple alternatively spliced transcript variants that encode different protein isoforms and which are located in different cellular locations have been described for this gene. [provided by RefSeq, May 2010]

FMR1 links:

FMR1 (HGNC:):

FMR1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.009594232).

BP6

Variant X-147944969-C-T is Benign according to our data. Variant chrX-147944969-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 211027.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chrX-147944969-C-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00117 (128/109560) while in subpopulation NFE AF= 0.00213 (112/52566). AF 95% confidence interval is 0.00181. There are 0 homozygotes in gnomad4. There are 39 alleles in male gnomad4 subpopulation. Median coverage is 22. This position pass quality control queck.

BS2

High Hemizygotes in GnomAd4 at 39 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FMR1	NM_002024.6 linkuse as main transcript	c.1572C>T	p.Ser524Ser	synonymous_variant	15/17	ENST00000370475.9	NP_002015.1	Q06787-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FMR1	ENST00000370475.9 linkuse as main transcript	c.1572C>T	p.Ser524Ser	synonymous_variant	15/17	1	NM_002024.6	ENSP00000359506.5		Q06787-1

Frequencies

GnomAD3 genomes

AF:

0.00117

AC:

128

AN:

109507

Hom.:

Cov.:

AF XY:

0.00123

AC XY:

AN XY:

31831

show subpopulations

Gnomad AFR

AF:

0.000267

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000195

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000832

Gnomad FIN

AF:

0.000343

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00213

Gnomad OTH

AF:

0.00138

GnomAD3 exomes

AF:

0.000983

AC:

172

AN:

175013

Hom.:

AF XY:

0.000880

AC XY:

AN XY:

60257

show subpopulations

Gnomad AFR exome

AF:

0.0000796

Gnomad AMR exome

AF:

0.000298

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000556

Gnomad FIN exome

AF:

0.000320

Gnomad NFE exome

AF:

0.00202

Gnomad OTH exome

AF:

0.000455

GnomAD4 exome

AF:

0.00171

AC:

1873

AN:

1094984

Hom.:

Cov.:

AF XY:

0.00174

AC XY:

629

AN XY:

360620

show subpopulations

Gnomad4 AFR exome

AF:

0.000341

Gnomad4 AMR exome

AF:

0.000229

Gnomad4 ASJ exome

AF:

0.0000519

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000933

Gnomad4 FIN exome

AF:

0.000545

Gnomad4 NFE exome

AF:

0.00209

Gnomad4 OTH exome

AF:

0.00148

GnomAD4 genome

AF:

0.00117

AC:

128

AN:

109560

Hom.:

Cov.:

AF XY:

0.00122

AC XY:

AN XY:

31896

show subpopulations

Gnomad4 AFR

AF:

0.000266

Gnomad4 AMR

AF:

0.000195

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000834

Gnomad4 FIN

AF:

0.000343

Gnomad4 NFE

AF:

0.00213

Gnomad4 OTH

AF:

0.00136

Alfa

AF:

0.00200

Hom.:

TwinsUK

AF:

0.00189

AC:

ALSPAC

AF:

0.00277

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.00253

AC:

ExAC

AF:

0.000981

AC:

119

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Apr 05, 2016	- -
Likely benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Jun 23, 2015	- -

not provided

Benign:2

Likely benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -

FMR1-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jan 16, 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). -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 08, 2016

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. -

Fragile X syndrome

Benign:1

Likely benign, no assertion criteria provided

clinical testing

Natera, Inc.

Sep 16, 2020

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.26

CADD

Benign

DANN

Uncertain

0.99

FATHMM_MKL

Benign

0.73

LIST_S2

Benign

0.50

M_CAP

Uncertain

0.14

MetaRNN

Benign

0.0096

MetaSVM

Benign

-0.82

PROVEAN

Benign

0.48

REVEL

Benign

0.073

Sift

Benign

0.043

Sift4G

Benign

0.24

Vest4

0.097

MVP

0.97

ClinPred

0.015

GERP RS

5.1

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