rs201725369
Variant summary
Our verdict is Pathogenic. The variant received 4 ACMG points: 4P and 0B. PM3PP1PP4
This summary comes from the ClinGen Evidence Repository: The NM_213599.3: c.172C>T variant in ANO5 is a missense variant predicted to cause substitution of arginine by tryptophan at amino acid 58 (p.Arg58Trp). This variant has been detected in at least seven individuals with limb girdle muscular dystrophy or persistent hyperCKemia, including in unknown phase with a pathogenic variant (c.191dup x2, 1.0 pts, PMID:22499103, 30564623, LOVD Individual #00220701) and confirmed in trans with a pathogenic variant (c.2018A>G p.(Tyr673Cys), 1.0 pt, PMID:23055322; c.148C>T p.(Arg50Ter), 1.0 pt, PMID:30564623, LOVD Individual #00078872). Three individuals were homozygous for the variant, all of whom experienced progressive muscle weakness or showed myopathic or dystrophic signs on muscle biopsy (1.0 pt, PMID:31353849, 27854218) (PM3_Very Strong). At least one patient with this variant displayed progressive limb girdle muscle weakness (PP4). The variant has also been reported to segregate with autosomal recessive LGMD in one affected family member (PP1; PMID:23055322). The Grpmax filtering allele frequency for this variant is 0.002728 in gnomAD v4.1.0 exomes (the lower bound of the 95% confidence interval of 23/5762 Middle Eastern chromosomes), which is higher than the threshold of 0.001 for BS1. The Middle Eastern genetic ancestry group also includes three homozygous individuals. However, in light of the overall evidence for this variant and the potential for late onset and subclinical presentation, the LGMD VCEP considers this variant a BS1 exception. The computational predictor REVEL gives a score of 0.572 (PP3, BP4 not met). In summary, this variant meets the criteria to be classified as Pathogenic for autosomal recessive limb girdle muscular dystrophy based on the ACMG/AMP criteria applied, as specified by the ClinGen LGMD VCEP (LGMD VCEP specifications version 1.0.0; 06/24/2025): PM3_Very Strong, PP4, PP1. LINK:https://erepo.genome.network/evrepo/ui/classification/CA202865/MONDO:0015152/188
Frequency
Consequence
NM_213599.3 missense
Scores
Clinical Significance
Conservation
Publications
- gnathodiaphyseal dysplasiaInheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), G2P, Orphanet
- autosomal recessive limb-girdle muscular dystrophyInheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
- autosomal recessive limb-girdle muscular dystrophy type 2LInheritance: AR Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet
- Miyoshi muscular dystrophy 3Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
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ACMG classification
Our verdict: Pathogenic. The variant received 4 ACMG points.
Variant Effect in Transcripts
ACMG analysis was done for transcript: NM_213599.3. You can select a different transcript below to see updated ACMG assignments.
RefSeq Transcripts
Ensembl Transcripts
| Sel. | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| ANO5 | TSL:1 MANE Select | c.172C>T | p.Arg58Trp | missense | Exon 4 of 22 | ENSP00000315371.9 | Q75V66 | ||
| ANO5 | c.172C>T | p.Arg58Trp | missense | Exon 4 of 21 | ENSP00000620140.1 | ||||
| ANO5 | c.169C>T | p.Arg57Trp | missense | Exon 4 of 20 | ENSP00000620141.1 |
Frequencies
GnomAD3 genomes AF: 0.000151 AC: 23AN: 151952Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000996 AC: 25AN: 251082 AF XY: 0.0000958 show subpopulations
GnomAD4 exome AF: 0.0000698 AC: 102AN: 1461252Hom.: 3 Cov.: 32 AF XY: 0.0000674 AC XY: 49AN XY: 726930 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.000151 AC: 23AN: 152070Hom.: 0 Cov.: 32 AF XY: 0.000188 AC XY: 14AN XY: 74326 show subpopulations
Age Distribution
ClinVar
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at