11-65182883-T-TC
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Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_005186.4(CAPN1):c.188dupC(p.Val64fs) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000374 in 1,604,096 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.
Frequency
Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000028 ( 0 hom. )
Consequence
CAPN1
NM_005186.4 frameshift
NM_005186.4 frameshift
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Not classified
Clinical Significance
Conservation
PhyloP100: 2.77
Genes affected
CAPN1 (HGNC:1476): (calpain 1) The calpains, calcium-activated neutral proteases, are nonlysosomal, intracellular cysteine proteases. The mammalian calpains include ubiquitous, stomach-specific, and muscle-specific proteins. The ubiquitous enzymes consist of heterodimers with distinct large, catalytic subunits associated with a common small, regulatory subunit. This gene encodes the large subunit of the ubiquitous enzyme, calpain 1. Several transcript variants encoding two different isoforms have been found for this gene. [provided by RefSeq, Nov 2010]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 18 ACMG points.
PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 11-65182883-T-TC is Pathogenic according to our data. Variant chr11-65182883-T-TC is described in ClinVar as [Pathogenic]. Clinvar id is 817644.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000132 AC: 2AN: 151932Hom.: 0 Cov.: 33
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GnomAD4 exome AF: 0.00000275 AC: 4AN: 1452164Hom.: 0 Cov.: 31 AF XY: 0.00000139 AC XY: 1AN XY: 721516
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GnomAD4 genome AF: 0.0000132 AC: 2AN: 151932Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1AN XY: 74184
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ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not provided Pathogenic:2
Pathogenic, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Feb 18, 2023 | This sequence change creates a premature translational stop signal (p.Val64Glyfs*103) in the CAPN1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in CAPN1 are known to be pathogenic (PMID: 27153400, 27320912). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This premature translational stop signal has been observed in individual(s) with hereditary spastic paraplegia (PMID: 31227335). This variant is also known as c.183_184insC. ClinVar contains an entry for this variant (Variation ID: 817644). For these reasons, this variant has been classified as Pathogenic. - |
Pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Nov 04, 2019 | Frameshift variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; This variant is associated with the following publications: (PMID: 27320912, 31227335) - |
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Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at