19-46756466-G-T

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PS1_ModeratePM1PM2PM5PP3_ModeratePP5

The ENST00000318584.10(FKRP):​c.1016G>T​(p.Arg339Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000701 in 1,427,414 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in Lovd as Pathogenic (no stars). Another nucleotide change resulting in same amino acid change has been previously reported as Likely pathogenicin UniProt. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R339H) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

FKRP
ENST00000318584.10 missense

Scores

11
7
1

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 9.40
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]

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 11 ACMG points.

PS1
Transcript ENST00000318584.10 (FKRP) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in UniProt
PM1
In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 10 uncertain in ENST00000318584.10
PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr19-46756466-G-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 2838682.Status of the report is criteria_provided_single_submitter, 1 stars.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.913
PP5
Variant 19-46756466-G-T is Pathogenic according to our data. Variant chr19-46756466-G-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
FKRPNM_024301.5 linkuse as main transcriptc.1016G>T p.Arg339Leu missense_variant 4/4 ENST00000318584.10 NP_077277.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
FKRPENST00000318584.10 linkuse as main transcriptc.1016G>T p.Arg339Leu missense_variant 4/41 NM_024301.5 ENSP00000326570 P1
FKRPENST00000391909.7 linkuse as main transcriptc.1016G>T p.Arg339Leu missense_variant 4/42 ENSP00000375776 P1
FKRPENST00000597339.5 linkuse as main transcriptn.247-5367G>T intron_variant, non_coding_transcript_variant 5
FKRPENST00000600646.5 linkuse as main transcriptn.247+7801G>T intron_variant, non_coding_transcript_variant 3

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD3 exomes
AF:
0.00000520
AC:
1
AN:
192488
Hom.:
0
AF XY:
0.00000952
AC XY:
1
AN XY:
105016
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000384
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
7.01e-7
AC:
1
AN:
1427414
Hom.:
0
Cov.:
32
AF XY:
0.00000142
AC XY:
1
AN XY:
706248
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000121
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.88
BayesDel_addAF
Pathogenic
0.30
D
BayesDel_noAF
Pathogenic
0.30
CADD
Pathogenic
30
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.94
D;D
Eigen
Uncertain
0.54
Eigen_PC
Uncertain
0.46
FATHMM_MKL
Pathogenic
1.0
D
LIST_S2
Uncertain
0.92
.;D
M_CAP
Pathogenic
0.78
D
MetaRNN
Pathogenic
0.91
D;D
MetaSVM
Pathogenic
0.88
D
MutationAssessor
Uncertain
2.4
M;M
MutationTaster
Benign
1.0
D;D
PrimateAI
Pathogenic
0.90
D
PROVEAN
Pathogenic
-5.7
D;D
REVEL
Pathogenic
0.84
Sift
Uncertain
0.0060
D;D
Sift4G
Uncertain
0.013
D;D
Polyphen
1.0
D;D
Vest4
0.61
MVP
0.91
MPC
1.8
ClinPred
0.97
D
GERP RS
4.2
Varity_R
0.93
gMVP
0.94

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.

Other links and lift over

dbSNP: rs1450841129; hg19: chr19-47259723; API