1-156138560-T-A
Position:
Variant summary
Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1PM2PM5PP2
The NM_170707.4(LMNA):c.1771T>A(p.Cys591Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as not provided (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C591F) has been classified as Uncertain significance.
Frequency
Genomes: not found (cov: 32)
Consequence
LMNA
NM_170707.4 missense
NM_170707.4 missense
Scores
7
6
5
Clinical Significance
Conservation
PhyloP100: 7.39
Genes affected
LMNA (HGNC:6636): (lamin A/C) The protein encoded by this gene is part of the nuclear lamina, a two-dimensional matrix of proteins located next to the inner nuclear membrane. The lamin family of proteins make up the matrix and are highly conserved in evolution. During mitosis, the lamina matrix is reversibly disassembled as the lamin proteins are phosphorylated. Lamin proteins are thought to be involved in nuclear stability, chromatin structure and gene expression. Vertebrate lamins consist of two types, A and B. Alternative splicing results in multiple transcript variants. Mutations in this gene lead to several diseases: Emery-Dreifuss muscular dystrophy, familial partial lipodystrophy, limb girdle muscular dystrophy, dilated cardiomyopathy, Charcot-Marie-Tooth disease, and Hutchinson-Gilford progeria syndrome. [provided by RefSeq, May 2022]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 7 ACMG points.
PM1
In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 13 uncertain in NM_170707.4
PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr1-156138561-G-T is described in Lovd as [Pathogenic].
PP2
Missense variant where missense usually causes diseases, LMNA
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
LMNA | NM_170707.4 | c.1771T>A | p.Cys591Ser | missense_variant | 11/12 | ENST00000368300.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
LMNA | ENST00000368300.9 | c.1771T>A | p.Cys591Ser | missense_variant | 11/12 | 1 | NM_170707.4 | P1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 genomes
Cov.:
32
GnomAD4 exome Cov.: 31
GnomAD4 exome
Cov.:
31
GnomAD4 genome Cov.: 32
GnomAD4 genome
Cov.:
32
ClinVar
Significance: not provided
Submissions summary: Other:1
Revision: no classification provided
LINK: link
Submissions by phenotype
Hutchinson-Gilford syndrome Other:1
not provided, no classification provided | literature only | GeneReviews | - | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
CardioboostCm
Uncertain
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Uncertain
DANN
Uncertain
Eigen
Benign
Eigen_PC
Uncertain
FATHMM_MKL
Pathogenic
D
LIST_S2
Benign
T;T;T;T;T;T
M_CAP
Pathogenic
D
MetaRNN
Uncertain
D;D;D;D;D;D
MetaSVM
Uncertain
D
MutationTaster
Benign
D;D;D;D;D
PrimateAI
Pathogenic
D
PROVEAN
Benign
N;N;N;N;N;N
REVEL
Pathogenic
Sift
Uncertain
D;D;D;D;D;D
Sift4G
Benign
T;D;D;D;D;D
Polyphen
P;P;.;.;.;.
Vest4
MutPred
0.41
.;Gain of glycosylation at C591 (P = 0.0047);Gain of glycosylation at C591 (P = 0.0047);.;.;.;
MVP
MPC
1.0
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at