Genetic Variant LMNB1:p.Pro6Pro (chr5-126777526-C-T) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2BP4_ModerateBP6_ModerateBP7

The NM_005573.4(LMNB1):c.18C>T(p.Pro6Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000036 in 1,388,914 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000032 ( 0 hom. )

Consequence

LMNB1
NM_005573.4 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 1.66

Publications

0 publications found

Variant links:

Genes affected

LMNB1 (HGNC:6637): (lamin B1) This gene encodes one of the two B-type lamin proteins and is a component of the nuclear lamina. A duplication of this gene is associated with autosomal dominant adult-onset leukodystrophy (ADLD). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2015]

LMNB1 Gene-Disease associations (from GenCC):

microcephaly 26, primary, autosomal dominant
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
adult-onset autosomal dominant demyelinating leukodystrophy
Inheritance: AD Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet
microcephaly
Inheritance: AD Classification: STRONG Submitted by: Franklin by Genoox
autosomal dominant primary microcephaly
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

LMNB1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.34).

BP6

Variant 5-126777526-C-T is Benign according to our data. Variant chr5-126777526-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 2960650.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=1.66 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005573.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
LMNB1	NM_005573.4	MANE Select	c.18C>T	p.Pro6Pro	synonymous	Exon 1 of 11	NP_005564.1	P20700
LMNB1	NM_001198557.2		c.-272+282C>T		intron	N/A	NP_001185486.1
LMNB1	NR_134488.1		n.904C>T		non_coding_transcript_exon	Exon 1 of 12

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
LMNB1	ENST00000261366.10	TSL:1 MANE Select	c.18C>T	p.Pro6Pro	synonymous	Exon 1 of 11	ENSP00000261366.5	P20700
LMNB1	ENST00000395354.1	TSL:1	c.18C>T	p.Pro6Pro	synonymous	Exon 1 of 6	ENSP00000378761.1	E9PBF6
LMNB1	ENST00000460265.5	TSL:1	n.18C>T		non_coding_transcript_exon	Exon 1 of 12	ENSP00000486528.1	A0A0D9SFE5

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152080

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000511

AC:

AN:

39106

AF XY:

0.0000876

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000474

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000323

AC:

AN:

1236834

Hom.:

Cov.:

AF XY:

0.00000663

AC XY:

AN XY:

603084

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

24664

American (AMR)

AF:

0.000218

AC:

AN:

13786

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

18432

East Asian (EAS)

AF:

0.00

AC:

AN:

27440

South Asian (SAS)

AF:

0.00

AC:

AN:

53644

European-Finnish (FIN)

AF:

0.00

AC:

AN:

42098

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3680

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1002682

Other (OTH)

AF:

0.0000198

AC:

AN:

50408

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.675

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152080

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74288

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41434

American (AMR)

AF:

0.0000655

AC:

AN:

15264

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10586

Middle Eastern (MID)

AF:

0.00

AC:

AN:

312

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67994

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000529

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.34

CADD

Benign

(source)

DANN

Benign

0.88

PhyloP100

1.7

PromoterAI

0.092

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.9

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over