chr1-223750924-G-C
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong
The NM_001748.5(CAPN2):c.848G>C(p.Arg283Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000386 in 1,552,540 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 ClinVar as Uncertain significance (★).
Frequency
Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000014 ( 0 hom. )
Consequence
CAPN2
NM_001748.5 missense
NM_001748.5 missense
Scores
12
4
1
Clinical Significance
Conservation
PhyloP100: 10.0
Genes affected
CAPN2 (HGNC:1479): (calpain 2) 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 2. Multiple heterogeneous transcriptional start sites in the 5' UTR have been reported. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2009]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.985
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CAPN2 | NM_001748.5 | c.848G>C | p.Arg283Pro | missense_variant | 7/21 | ENST00000295006.6 | |
CAPN2 | NM_001146068.2 | c.614G>C | p.Arg205Pro | missense_variant | 7/21 | ||
CAPN2 | XM_047431344.1 | c.848G>C | p.Arg283Pro | missense_variant | 7/12 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CAPN2 | ENST00000295006.6 | c.848G>C | p.Arg283Pro | missense_variant | 7/21 | 1 | NM_001748.5 | P1 | |
CAPN2 | ENST00000433674.6 | c.614G>C | p.Arg205Pro | missense_variant | 7/21 | 2 |
Frequencies
GnomAD3 genomes ? AF: 0.0000263 AC: 4AN: 152210Hom.: 0 Cov.: 33
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GnomAD3 exomes AF: 0.00000633 AC: 1AN: 158074Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 83146
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GnomAD4 exome AF: 0.00000143 AC: 2AN: 1400330Hom.: 0 Cov.: 31 AF XY: 0.00000145 AC XY: 1AN XY: 690714
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Jan 23, 2023 | The c.848G>C (p.R283P) alteration is located in exon 7 (coding exon 7) of the CAPN2 gene. This alteration results from a G to C substitution at nucleotide position 848, causing the arginine (R) at amino acid position 283 to be replaced by a proline (P). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
LIST_S2
Pathogenic
D;D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D
MetaSVM
Pathogenic
D
MutationTaster
Benign
D;D
PrimateAI
Uncertain
T
PROVEAN
Pathogenic
D;D
REVEL
Pathogenic
Sift
Uncertain
D;D
Sift4G
Uncertain
D;D
Polyphen
1.0
.;D
Vest4
MutPred
0.85
.;Loss of MoRF binding (P = 4e-04);
MVP
MPC
0.70
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at