rs60310264

chr1-156130693-G-Achr1-156130693-G-T

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1 PM2 PP2 PP3_Moderate PP5

The NM_170707.4(LMNA):c.433G>A(p.Glu145Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Synonymous variant affecting the same amino acid position (i.e. E145E) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: LMNA NM_170707.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1 O:2
• Conservation: PhyloP100: 10.0

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]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM1: In a hotspot region, there are 10 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 9 uncertain in NM_170707.4
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, LMNA
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.909
• PP5: Variant 1-156130693-G-A is Pathogenic according to our data. Variant chr1-156130693-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 14502.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr1-156130693-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LMNA	NM_170707.4	c.433G>A	p.Glu145Lys	missense_variant	2/12	ENST00000368300.9
LMNA	NM_005572.4	c.433G>A	p.Glu145Lys	missense_variant	2/10	ENST00000677389.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LMNA	ENST00000368300.9	c.433G>A	p.Glu145Lys	missense_variant	2/12	1	NM_170707.4	P1
LMNA	ENST00000677389.1	c.433G>A	p.Glu145Lys	missense_variant	2/10		NM_005572.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1 Other:2

Revision: no assertion criteria provided

Submissions by phenotype

Hutchinson-Gilford progeria syndrome, atypical Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

May 15, 2003

- -

not provided Other:1

not provided, no classification provided

literature only

Epithelial Biology; Institute of Medical Biology, Singapore

-

- -

Hutchinson-Gilford syndrome Other:1

not provided, no classification provided

literature only

GeneReviews

-

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
CardioboostCm	Pathogenic	0.91
BayesDel_addAF	Pathogenic	0.31	D
BayesDel_noAF	Pathogenic	0.21
Cadd	Pathogenic	32
Dann	Pathogenic	1.0
Eigen	Pathogenic	0.92
Eigen_PC	Pathogenic	0.90
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.97	D;D;D;D;D;D;D;D;D
M_CAP	Pathogenic	0.29	D
MetaRNN	Pathogenic	0.91	D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	0.66	D
MutationAssessor	Pathogenic	3.4	M;.;M;M;M;.;.;.;.
MutationTaster	Benign	1.0	A;A;A;A;A;A;A;A;A
PrimateAI	Uncertain	0.73	T
PROVEAN	Uncertain	-3.4	D;D;D;D;D;D;D;D;D
REVEL	Pathogenic	0.76
Sift	Uncertain	0.0040	D;D;D;D;D;D;D;D;D
Sift4G	Uncertain	0.022	D;D;D;D;T;D;D;D;D
Polyphen		0.97	D;.;P;P;.;.;D;.;.
Vest4		0.61
MutPred		0.80		Gain of ubiquitination at E145 (P = 0.0114);Gain of ubiquitination at E145 (P = 0.0114);Gain of ubiquitination at E145 (P = 0.0114);Gain of ubiquitination at E145 (P = 0.0114);Gain of ubiquitination at E145 (P = 0.0114);.;.;.;.;
MVP		0.92
MPC		2.2
ClinPred		0.99	D
GERP RS		5.6
Varity_R		0.71
gMVP		0.91

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

LitVar

Other links and lift over

dbSNP: rs60310264; hg19: chr1-156100484;