Genetic Variant NM_020873.7:c.161C>G (chr3-3844802-C-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_020873.7(LRRN1):c.161C>G(p.Thr54Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,872 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. 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. T54I) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

LRRN1
NM_020873.7 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.67

Publications

0 publications found

Variant links:

Genes affected

LRRN1 (HGNC:20980): (leucine rich repeat neuronal 1) Predicted to act upstream of or within positive regulation of synapse assembly. Predicted to be integral component of membrane. Predicted to be active in extracellular matrix and extracellular space. [provided by Alliance of Genome Resources, Apr 2022]

LRRN1 links:

SUMF1 (HGNC:20376): (sulfatase modifying factor 1) This gene encodes an enzyme that catalyzes the hydrolysis of sulfate esters by oxidizing a cysteine residue in the substrate sulfatase to an active site 3-oxoalanine residue, which is also known as C-alpha-formylglycine. Mutations in this gene cause multiple sulfatase deficiency, a lysosomal storage disorder. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2009]

SUMF1 Gene-Disease associations (from GenCC):

mucosulfatidosis
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, ClinGen, G2P

SUMF1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.1588212).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LRRN1	NM_020873.7 link	c.161C>G	p.Thr54Ser	missense_variant	Exon 2 of 2	ENST00000319331.4	NP_065924.3	Q6UXK5A8K6Q2
LRRN1	NM_001324188.2 link	c.161C>G	p.Thr54Ser	missense_variant	Exon 3 of 3		NP_001311117.1	Q6UXK5
LRRN1	NM_001324189.2 link	c.161C>G	p.Thr54Ser	missense_variant	Exon 3 of 3		NP_001311118.1	Q6UXK5
LRRN1	XM_047448644.1 link	c.161C>G	p.Thr54Ser	missense_variant	Exon 2 of 2		XP_047304600.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
LRRN1	ENST00000319331.4 link	c.161C>G	p.Thr54Ser	missense_variant	Exon 2 of 2	1	NM_020873.7	ENSP00000314901.3	Q6UXK5
SUMF1	ENST00000448413.5 link	n.1192-17293G>C		intron_variant	Intron 9 of 12	2		ENSP00000404384.1	F5GXA0
LRRN1	ENST00000496115.1 link	n.*223C>G		downstream_gene_variant		3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461872

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727242

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111994

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.43

CADD

Benign

(source)

DANN

Benign

0.93

DEOGEN2

Benign

0.024

Eigen

Benign

-0.11

Eigen_PC

Benign

0.11

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.76

M_CAP

Benign

0.013

MetaRNN

Benign

0.16

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.6

PhyloP100

3.7

PrimateAI

Uncertain

0.76

PROVEAN

Benign

-0.12

REVEL

Benign

0.16

Sift

Benign

0.72

Sift4G

Benign

0.88

Polyphen

0.085

Vest4

0.36

MutPred

0.32

Gain of glycosylation at T49 (P = 0.0469);

MVP

0.21

MPC

0.17

ClinPred

0.31

GERP RS

5.8

Varity_R

0.11

gMVP

0.37

Mutation Taster

=85/15

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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NM_020873.7:c.161C>G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over