rs777245868

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 5P and 2B. PM1PM2PP2BP4_Moderate

The NM_024301.5(FKRP):c.541C>A(p.Arg181Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000459 in 1,545,306 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R181C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000047 ( 0 hom. )

Consequence

FKRP
NM_024301.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:6

Conservation

PhyloP100: 0.725

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

autosomal recessive limb-girdle muscular dystrophy type 2I
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Laboratory for Molecular Medicine, Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics
muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A5
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Genomics England PanelApp, G2P, Ambry Genetics
muscular dystrophy-dystroglycanopathy type B5
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Myriad Women’s Health, Labcorp Genetics (formerly Invitae)
myopathy caused by variation in FKRP
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
congenital muscular dystrophy with cerebellar involvement
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
congenital muscular dystrophy with intellectual disability
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
congenital muscular dystrophy without intellectual disability
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
muscle-eye-brain disease
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
muscular dystrophy-dystroglycanopathy, type A
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

FKRP links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM1

In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 19 uncertain in NM_024301.5

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 46 curated pathogenic missense variants (we use a threshold of 10). The gene has 2 curated benign missense variants. Gene score misZ: 1.8498 (below the threshold of 3.09). Trascript score misZ: -2.4986 (below the threshold of 3.09). GenCC associations: The gene is linked to autosomal recessive limb-girdle muscular dystrophy type 2I, muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A5, congenital muscular dystrophy with intellectual disability, muscular dystrophy-dystroglycanopathy, type A, muscle-eye-brain disease, congenital muscular dystrophy with cerebellar involvement, myopathy caused by variation in FKRP, muscular dystrophy-dystroglycanopathy type B5, congenital muscular dystrophy without intellectual disability.

BP4

Computational evidence support a benign effect (MetaRNN=0.17834076).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024301.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FKRP	NM_024301.5	MANE Select	c.541C>A	p.Arg181Ser	missense	Exon 4 of 4	NP_077277.1
	FKRP	NM_001039885.3		c.541C>A	p.Arg181Ser	missense	Exon 4 of 4	NP_001034974.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
FKRP	ENST00000318584.10	TSL:1 MANE Select	c.541C>A	p.Arg181Ser	missense	Exon 4 of 4	ENSP00000326570.4
FKRP	ENST00000391909.7	TSL:2	c.541C>A	p.Arg181Ser	missense	Exon 4 of 4	ENSP00000375776.2
FKRP	ENST00000597339.5	TSL:5	n.247-5842C>A		intron	N/A

Frequencies

GnomAD3 genomes

AF:

0.0000395

AC:

AN:

151946

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000737

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000700

AC:

AN:

142926

AF XY:

0.000101

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000394

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000878

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000139

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000466

AC:

AN:

1393360

Hom.:

Cov.:

AF XY:

0.0000580

AC XY:

AN XY:

689216

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31546

American (AMR)

AF:

0.0000272

AC:

AN:

36704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25106

East Asian (EAS)

AF:

0.00

AC:

AN:

36270

South Asian (SAS)

AF:

0.00

AC:

AN:

79914

European-Finnish (FIN)

AF:

0.00

AC:

AN:

34616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5702

European-Non Finnish (NFE)

AF:

0.0000580

AC:

AN:

1085350

Other (OTH)

AF:

0.0000172

AC:

AN:

58152

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

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:

0.0000395

AC:

AN:

151946

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74208

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41440

American (AMR)

AF:

0.00

AC:

AN:

15262

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3460

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000737

AC:

AN:

67842

Other (OTH)

AF:

0.00

AC:

AN:

2082

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

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:

0.00126

Hom.:

Bravo

AF:

0.0000416

ExAC

AF:

0.0000274

AC:

ClinVar

ClinVar submissions as Germline

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Autosomal recessive limb-girdle muscular dystrophy type 2I (1)

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 (1)

Cardiovascular phenotype (1)

Walker-Warburg congenital muscular dystrophy (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.21

CADD

Benign

(source)

DANN

Benign

0.71

DEOGEN2

Benign

0.26

Eigen

Benign

-0.90

Eigen_PC

Benign

-0.78

FATHMM_MKL

Benign

0.36

LIST_S2

Benign

0.67

M_CAP

Pathogenic

0.63

MetaRNN

Benign

0.18

MetaSVM

Uncertain

0.78

MutationAssessor

Benign

-0.69

PhyloP100

0.72

PrimateAI

Pathogenic

0.85

PROVEAN

Benign

-0.70

REVEL

Uncertain

0.44

Sift

Benign

0.42

Sift4G

Benign

0.74

Polyphen

0.0

Vest4

0.10

MutPred

0.28

Loss of MoRF binding (P = 0.0279)

MVP

0.84

MPC

0.71

ClinPred

0.018

GERP RS

2.3

Varity_R

0.39

gMVP

0.67

Mutation Taster

=62/38

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

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

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over