rs948771802

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_000426.4(LAMA2):​c.4189G>A​(p.Gly1397Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,822 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

LAMA2
NM_000426.4 missense

Scores

11
5
2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.89
Variant links:
Genes affected
LAMA2 (HGNC:6482): (laminin subunit alpha 2) Laminin, an extracellular protein, is a major component of the basement membrane. It is thought to mediate the attachment, migration, and organization of cells into tissues during embryonic development by interacting with other extracellular matrix components. It is composed of three subunits, alpha, beta, and gamma, which are bound to each other by disulfide bonds into a cross-shaped molecule. This gene encodes the alpha 2 chain, which constitutes one of the subunits of laminin 2 (merosin) and laminin 4 (s-merosin). Mutations in this gene have been identified as the cause of congenital merosin-deficient muscular dystrophy. Two transcript variants encoding different proteins have been found for this gene. [provided by RefSeq, Jul 2008]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.888

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
LAMA2NM_000426.4 linkc.4189G>A p.Gly1397Arg missense_variant Exon 29 of 65 ENST00000421865.3 NP_000417.3
LAMA2NM_001079823.2 linkc.4189G>A p.Gly1397Arg missense_variant Exon 29 of 64 NP_001073291.2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
LAMA2ENST00000421865.3 linkc.4189G>A p.Gly1397Arg missense_variant Exon 29 of 65 5 NM_000426.4 ENSP00000400365.2 P24043
LAMA2ENST00000618192.5 linkc.4453G>A p.Gly1485Arg missense_variant Exon 30 of 66 5 ENSP00000480802.2 A0A087WX80
LAMA2ENST00000617695.5 linkc.4189G>A p.Gly1397Arg missense_variant Exon 29 of 64 5 ENSP00000481744.2 A0A087WYF1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
0.00000137
AC:
2
AN:
1461822
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
727218
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000180
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.53
BayesDel_addAF
Pathogenic
0.33
D
BayesDel_noAF
Pathogenic
0.24
CADD
Pathogenic
29
DANN
Pathogenic
1.0
DEOGEN2
Benign
0.079
.;T;T
Eigen
Pathogenic
0.86
Eigen_PC
Pathogenic
0.80
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.93
D;D;D
M_CAP
Uncertain
0.14
D
MetaRNN
Pathogenic
0.89
D;D;D
MetaSVM
Uncertain
0.18
D
MutationAssessor
Pathogenic
3.2
.;.;M
PrimateAI
Uncertain
0.64
T
PROVEAN
Pathogenic
-7.3
.;.;D
REVEL
Pathogenic
0.71
Sift
Pathogenic
0.0
.;.;D
Polyphen
1.0
.;.;D
Vest4
0.84
MutPred
0.66
Loss of catalytic residue at F1398 (P = 0.1854);Loss of catalytic residue at F1398 (P = 0.1854);Loss of catalytic residue at F1398 (P = 0.1854);
MVP
0.88
MPC
0.52
ClinPred
1.0
D
GERP RS
5.2
Varity_R
0.90
gMVP
0.83

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr6-129649435; API