rs80356809

Variant names:

• chr1-156135174-T-A
• rs80356809
• NM_170707.4:c.811-13T>A

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_170707.4(LMNA):​c.811-13T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00376 in 1,614,022 control chromosomes in the GnomAD database, including 14 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0031 (1 hom., cov: 32)
  • Exomes 𝑓: 0.0038 (13 hom.)
• Consequence: LMNA NM_170707.4 intron
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts U:1 B:27 O:1
• Conservation: PhyloP100: -0.0550
• Publications: 2 publications found

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]

LMNA Gene-Disease associations (from GenCC):

• dilated cardiomyopathy

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• dilated cardiomyopathy 1A

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, G2P
• familial partial lipodystrophy, Dunnigan type

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• restrictive dermopathy 2

  Inheritance: AR, AD Classification: DEFINITIVE, LIMITED Submitted by: G2P
• Emery-Dreifuss muscular dystrophy 2, autosomal dominant

  Inheritance: SD, AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
• Hutchinson-Gilford progeria syndrome

  Inheritance: SD, AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, G2P, Labcorp Genetics (formerly Invitae)
• lipodystrophy

  Inheritance: SD Classification: DEFINITIVE Submitted by: ClinGen
• atrioventricular block

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
• Charcot-Marie-Tooth disease type 2B1

  Inheritance: AD, AR Classification: STRONG, MODERATE, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, G2P, Ambry Genetics
• heart-hand syndrome, Slovenian type

  Inheritance: AD Classification: STRONG, MODERATE, SUPPORTIVE, LIMITED Submitted by: G2P, Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• Emery-Dreifuss muscular dystrophy 3, autosomal recessive

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• mandibuloacral dysplasia with type A lipodystrophy

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
• atrial fibrillation

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
• atypical Werner syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• autosomal dominant Emery-Dreifuss muscular dystrophy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• congenital muscular dystrophy due to LMNA mutation

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• familial isolated dilated cardiomyopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• lethal restrictive dermopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• LMNA-related cardiocutaneous progeria syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• autosomal recessive Emery-Dreifuss muscular dystrophy

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• dilated cardiomyopathy-hypergonadotropic hypogonadism syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• autosomal semi-dominant severe lipodystrophic laminopathy

  Inheritance: SD Classification: SUPPORTIVE Submitted by: Orphanet
• arrhythmogenic right ventricular cardiomyopathy

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Benign. The variant received -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.77).
• BP6: Variant 1-156135174-T-A is Benign according to our data. Variant chr1-156135174-T-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 48086.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.00306 (466/152352) while in subpopulation AMR AF = 0.00699 (107/15308). AF 95% confidence interval is 0.00592. There are 1 homozygotes in GnomAd4. There are 205 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High Homozygotes in GnomAdExome4 at 13 AD,AR,SD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_170707.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LMNA	NM_170707.4	MANE Select	c.811-13T>A		intron	N/A	NP_733821.1	P02545-1
	LMNA	NM_005572.4	MANE Plus Clinical	c.811-13T>A		intron	N/A	NP_005563.1	P02545-2
	LMNA	NM_001406985.1		c.811-13T>A		intron	N/A	NP_001393914.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LMNA	ENST00000368300.9	TSL:1 MANE Select	c.811-13T>A		intron	N/A	ENSP00000357283.4	P02545-1
	LMNA	ENST00000677389.1	MANE Plus Clinical	c.811-13T>A		intron	N/A	ENSP00000503633.1	P02545-2
	LMNA	ENST00000368299.7	TSL:1	c.811-13T>A		intron	N/A	ENSP00000357282.3	P02545-6

Frequencies

GnomAD3 genomes AF: 0.00307 AC: 467 AN: 152234 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.000989

Gnomad AMI AF: 0.00329

Gnomad AMR AF: 0.00700

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.000282

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.00441

Gnomad OTH AF: 0.00526

GnomAD2 exomes AF: 0.00241 AC: 606 AN: 251248 AF XY: 0.00244

Gnomad AFR exome AF: 0.000554

Gnomad AMR exome AF: 0.00237

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.000601

Gnomad NFE exome AF: 0.00429

Gnomad OTH exome AF: 0.00212

GnomAD4 exome AF: 0.00384 AC: 5608 AN: 1461670 Hom.: 13 Cov.: 34 AF XY: 0.00366 AC XY: 2663 AN XY: 727148

African (AFR) AF: 0.000597 AC: 20 AN: 33480

American (AMR) AF: 0.00291 AC: 130 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.0000383 AC: 1 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000580 AC: 5 AN: 86254

European-Finnish (FIN) AF: 0.000564 AC: 30 AN: 53222

Middle Eastern (MID) AF: 0.00208 AC: 12 AN: 5768

European-Non Finnish (NFE) AF: 0.00464 AC: 5162 AN: 1111992

Other (OTH) AF: 0.00411 AC: 248 AN: 60394

GnomAD4 genome AF: 0.00306 AC: 466 AN: 152352 Hom.: 1 Cov.: 32 AF XY: 0.00275 AC XY: 205 AN XY: 74508

African (AFR) AF: 0.000986 AC: 41 AN: 41594

American (AMR) AF: 0.00699 AC: 107 AN: 15308

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4822

European-Finnish (FIN) AF: 0.000282 AC: 3 AN: 10626

Middle Eastern (MID) AF: 0.00340 AC: 1 AN: 294

European-Non Finnish (NFE) AF: 0.00440 AC: 299 AN: 68024

Other (OTH) AF: 0.00521 AC: 11 AN: 2112

Alfa AF: 0.00258 Hom.: 0

Bravo AF: 0.00370

Asia WGS AF: 0.000866 AC: 3 AN: 3478

ClinVar

ClinVar submissions

Significance: Benign/Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	7	not specified (7)
-	-	5	not provided (6)
-	-	2	Cardiomyopathy (2)
-	-	1	Cardiovascular phenotype (1)
-	-	1	Charcot-Marie-Tooth disease (1)
-	-	1	Charcot-Marie-Tooth disease type 2 (1)
-	-	1	Charcot-Marie-Tooth disease type 2B1 (1)
-	-	1	Congenital muscular dystrophy due to LMNA mutation (1)
-	1	-	Dilated cardiomyopathy 1A (1)
-	-	1	Emery-Dreifuss muscular dystrophy (1)
-	-	1	Emery-Dreifuss muscular dystrophy 2, autosomal dominant (1)
-	-	1	Familial partial lipodystrophy, Dunnigan type (1)
-	-	1	Hutchinson-Gilford syndrome (1)
-	-	1	Lethal tight skin contracture syndrome (1)
-	-	1	Limb-girdle muscular dystrophy, recessive (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.77
CADD	Benign	1.2
DANN	Benign	0.74
PhyloP100		-0.055
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Mutation Taster		=100/0	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs80356809; hg19: chr1-156104965;