rs1060502110
Variant summary
Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM2PP2BP4
The NM_024301.5(FKRP):c.82C>G(p.Gln28Glu) variant causes a missense change. The variant allele was found at a frequency of 0.00000373 in 1,609,110 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 Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q28R) has been classified as Uncertain significance.
Frequency
Consequence
NM_024301.5 missense
Scores
Clinical Significance
Conservation
Publications
- autosomal recessive limb-girdle muscular dystrophy type 2IInheritance: 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 A5Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Genomics England PanelApp, G2P, Ambry Genetics
- muscular dystrophy-dystroglycanopathy type B5Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Myriad Women’s Health, Labcorp Genetics (formerly Invitae)
- myopathy caused by variation in FKRPInheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
- congenital muscular dystrophy with cerebellar involvementInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- congenital muscular dystrophy with intellectual disabilityInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- congenital muscular dystrophy without intellectual disabilityInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- muscle-eye-brain diseaseInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- muscular dystrophy-dystroglycanopathy, type AInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Uncertain_significance. The variant received 2 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| FKRP | NM_024301.5 | c.82C>G | p.Gln28Glu | missense_variant | Exon 4 of 4 | ENST00000318584.10 | NP_077277.1 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152234Hom.: 0 Cov.: 33 show subpopulations
GnomAD2 exomes AF: 0.00000423 AC: 1AN: 236670 AF XY: 0.00 show subpopulations
GnomAD4 exome AF: 0.00000343 AC: 5AN: 1456876Hom.: 0 Cov.: 32 AF XY: 0.00000414 AC XY: 3AN XY: 724492 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152234Hom.: 0 Cov.: 33 AF XY: 0.0000134 AC XY: 1AN XY: 74368 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Autosomal recessive limb-girdle muscular dystrophy type 2I Uncertain:1
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not provided Uncertain:1
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Cardiovascular phenotype Uncertain:1
The p.Q28E variant (also known as c.82C>G), located in coding exon 1 of the FKRP gene, results from a C to G substitution at nucleotide position 82. The glutamine at codon 28 is replaced by glutamic acid, an amino acid with highly similar properties. This amino acid position is conserved. In addition, the in silico prediction for this alteration is inconclusive. Based on the available evidence, the clinical significance of this variant remains unclear. -
Walker-Warburg congenital muscular dystrophy Uncertain:1
This sequence change replaces glutamine, which is neutral and polar, with glutamic acid, which is acidic and polar, at codon 28 of the FKRP protein (p.Gln28Glu). This variant is present in population databases (no rsID available, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with FKRP-related conditions. ClinVar contains an entry for this variant (Variation ID: 408722). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at