chr19-46756470-C-T

Position:

chr19-46756470-C-T

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_024301.5(FKRP):c.1020C>T(p.Tyr340Tyr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00059 in 1,542,120 control chromosomes in the GnomAD database, including 8 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0031 ( 3 hom., cov: 33)

Exomes 𝑓: 0.00032 ( 5 hom. )

Consequence

FKRP
NM_024301.5 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:10

Conservation

PhyloP100: 1.15

Variant links:

Genes affected

FKRP (HGNC:17997): (fukutin related protein) This gene encodes a protein which is targeted to the medial Golgi apparatus and is necessary for posttranslational modification of dystroglycan. Mutations in this gene have been associated with congenital muscular dystrophy, cognitive disability, and cerebellar cysts. Several alternatively spliced transcript variants of this gene have been described, but the full-length nature of some of these variants has not been determined. [provided by RefSeq, Oct 2008]

FKRP links:

FKRP (HGNC:):

FKRP links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.56).

BP6

Variant 19-46756470-C-T is Benign according to our data. Variant chr19-46756470-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 241455.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr19-46756470-C-T is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=1.15 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0031 (468/150860) while in subpopulation AFR AF= 0.0103 (427/41490). AF 95% confidence interval is 0.00949. There are 3 homozygotes in gnomad4. There are 196 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FKRP	NM_024301.5 linkuse as main transcript	c.1020C>T	p.Tyr340Tyr	synonymous_variant	4/4	ENST00000318584.10	NP_077277.1	Q9H9S5A0A024R0R7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
FKRP	ENST00000318584.10 linkuse as main transcript	c.1020C>T	p.Tyr340Tyr	synonymous_variant	4/4	1	NM_024301.5	ENSP00000326570.4	Q9H9S5
FKRP	ENST00000391909.7 linkuse as main transcript	c.1020C>T	p.Tyr340Tyr	synonymous_variant	4/4	2		ENSP00000375776.2	Q9H9S5
FKRP	ENST00000597339.5 linkuse as main transcript	n.247-5363C>T		intron_variant		5
FKRP	ENST00000600646.5 linkuse as main transcript	n.247+7805C>T		intron_variant		3

Frequencies

GnomAD3 genomes

AF:

0.00310

AC:

467

AN:

150768

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0103

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00191

Gnomad ASJ

AF:

0.000879

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000421

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000448

Gnomad OTH

AF:

0.00242

GnomAD3 exomes

AF:

0.000706

AC:

100

AN:

141648

Hom.:

AF XY:

0.000506

AC XY:

AN XY:

77078

show subpopulations

Gnomad AFR exome

AF:

0.0110

Gnomad AMR exome

AF:

0.000536

Gnomad ASJ exome

AF:

0.00111

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000474

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000518

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000318

AC:

442

AN:

1391260

Hom.:

Cov.:

AF XY:

0.000255

AC XY:

175

AN XY:

685760

show subpopulations

Gnomad4 AFR exome

AF:

0.0108

Gnomad4 AMR exome

AF:

0.000594

Gnomad4 ASJ exome

AF:

0.000910

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000386

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000555

Gnomad4 OTH exome

AF:

0.000725

GnomAD4 genome

AF:

0.00310

AC:

468

AN:

150860

Hom.:

Cov.:

AF XY:

0.00266

AC XY:

196

AN XY:

73600

show subpopulations

Gnomad4 AFR

AF:

0.0103

Gnomad4 AMR

AF:

0.00184

Gnomad4 ASJ

AF:

0.000879

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000421

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000448

Gnomad4 OTH

AF:

0.00239

Alfa

AF:

0.000643

Hom.:

Bravo

AF:

0.00346

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:10

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

Benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Dec 27, 2015	- -

not provided

Benign:3

Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Nov 29, 2023	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	May 14, 2021	- -
Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Sep 25, 2017	- -

Autosomal recessive limb-girdle muscular dystrophy type 2I;C1847759:Muscular dystrophy-dystroglycanopathy type B5;C3150413:Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A5;C4284790:Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A1

Benign:1

Benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Aug 18, 2021

- -

Cardiovascular phenotype

Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 26, 2019

This alteration is classified as 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. -

Walker-Warburg congenital muscular dystrophy

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 31, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.56

CADD

Benign

6.4

DANN

Benign

0.89

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