Genetic Variant LOXL1:p.Arg87Cys (chr15-73927042-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_005576.4(LOXL1):c.259C>T(p.Arg87Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000518 in 1,351,146 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R87G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000033 ( 0 hom. )

Consequence

LOXL1
NM_005576.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.69

Variant links:

Genes affected

LOXL1 (HGNC:6665): (lysyl oxidase like 1) This gene encodes a member of the lysyl oxidase family of proteins. The prototypic member of the family is essential to the biogenesis of connective tissue, encoding an extracellular copper-dependent amine oxidase that catalyzes the first step in the formation of crosslinks in collagen and elastin. The encoded preproprotein is proteolytically processed to generate the mature enzyme. A highly conserved amino acid sequence at the C-terminus end appears to be sufficient for amine oxidase activity, suggesting that each family member may retain this function. The N-terminus is poorly conserved and may impart additional roles in developmental regulation, senescence, tumor suppression, cell growth control, and chemotaxis to each member of the family. Mutations in this gene are associated with exfoliation syndrome. [provided by RefSeq, Jan 2016]

LOXL1 links:

LOXL1-AS1 (HGNC:44169): (LOXL1 antisense RNA 1)

LOXL1-AS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LOXL1	NM_005576.4 link	c.259C>T	p.Arg87Cys	missense_variant	Exon 1 of 7	ENST00000261921.8	NP_005567.2	Q08397

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LOXL1	ENST00000261921.8 link	c.259C>T	p.Arg87Cys	missense_variant	Exon 1 of 7	1	NM_005576.4	ENSP00000261921.7		Q08397

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152000

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000442

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000334

AC:

AN:

1199146

Hom.:

Cov.:

AF XY:

0.00000345

AC XY:

AN XY:

579824

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

24218

American (AMR)

AF:

0.00

AC:

AN:

12832

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

17688

East Asian (EAS)

AF:

0.00

AC:

AN:

26874

South Asian (SAS)

AF:

0.00

AC:

AN:

48108

European-Finnish (FIN)

AF:

0.00

AC:

AN:

41796

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4014

European-Non Finnish (NFE)

AF:

0.00000308

AC:

AN:

975314

Other (OTH)

AF:

0.0000207

AC:

AN:

48302

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.550

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152000

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74258

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41442

American (AMR)

AF:

0.00

AC:

AN:

15260

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10556

Middle Eastern (MID)

AF:

0.00

AC:

AN:

312

European-Non Finnish (NFE)

AF:

0.0000442

AC:

AN:

67946

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.608

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.44

BayesDel_addAF

Uncertain

0.053

BayesDel_noAF

Benign

-0.16

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.28

Eigen

Uncertain

0.28

Eigen_PC

Benign

0.17

FATHMM_MKL

Benign

0.57

LIST_S2

Benign

0.76

M_CAP

Pathogenic

0.40

MetaRNN

Uncertain

0.53

MetaSVM

Benign

-0.94

MutationAssessor

Uncertain

2.2

PhyloP100

1.7

PrimateAI

Pathogenic

0.87

PROVEAN

Uncertain

-3.0

REVEL

Benign

0.23

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.0020

Polyphen

1.0

Vest4

0.46

MutPred

0.35

Loss of solvent accessibility (P = 0.0094);

MVP

0.51

ClinPred

0.99

GERP RS

3.2

Varity_R

0.34

gMVP

0.48

Mutation Taster

=89/11

polymorphism

(source)

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

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15-73927042-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over