rs780442272
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_000426.4(LAMA2):āc.3343G>Cā(p.Ala1115Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,832 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (ā ). Synonymous variant affecting the same amino acid position (i.e. A1115A) has been classified as Likely benign.
Frequency
Consequence
NM_000426.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
LAMA2 | NM_000426.4 | c.3343G>C | p.Ala1115Pro | missense_variant | 23/65 | ENST00000421865.3 | |
LAMA2 | NM_001079823.2 | c.3343G>C | p.Ala1115Pro | missense_variant | 23/64 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
LAMA2 | ENST00000421865.3 | c.3343G>C | p.Ala1115Pro | missense_variant | 23/65 | 5 | NM_000426.4 | ||
LAMA2 | ENST00000618192.5 | c.3607G>C | p.Ala1203Pro | missense_variant | 24/66 | 5 | P1 | ||
LAMA2 | ENST00000617695.5 | c.3343G>C | p.Ala1115Pro | missense_variant | 23/64 | 5 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 exomes AF: 0.00000796 AC: 2AN: 251412Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135874
GnomAD4 exome AF: 0.00000205 AC: 3AN: 1461832Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2AN XY: 727202
GnomAD4 genome ? Cov.: 33
ClinVar
Submissions by phenotype
LAMA2-related muscular dystrophy Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Sep 01, 2021 | This sequence change replaces alanine with proline at codon 1115 of the LAMA2 protein (p.Ala1115Pro). The alanine residue is weakly conserved and there is a small physicochemical difference between alanine and proline. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals affected with LAMA2-related conditions. ClinVar contains an entry for this variant (Variation ID: 573496). 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