Genetic Variant LRRC24:p.Gln458Arg (chr8-144522644-T-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001024678.4(LRRC24):c.1373A>G(p.Gln458Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000315 in 1,585,606 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

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

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

LRRC24
NM_001024678.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.99

Variant links:

Genes affected

LRRC24 (HGNC:28947): (leucine rich repeat containing 24) 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]

LRRC24 links:

LRRC14 (HGNC:20419): (leucine rich repeat containing 14) This gene encodes a leucine-rich repeat-containing protein. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Dec 2012]

LRRC14 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 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
LRRC24	NM_001024678.4 link	c.1373A>G	p.Gln458Arg	missense_variant	Exon 5 of 5	ENST00000529415.7	NP_001019849.2	Q50LG9
LRRC14	NM_014665.4 link	c.*1166T>C		3_prime_UTR_variant	Exon 4 of 4	ENST00000292524.6	NP_055480.1	Q15048

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
LRRC24	ENST00000529415.7 link	c.1373A>G	p.Gln458Arg	missense_variant	Exon 5 of 5	1	NM_001024678.4	ENSP00000434849.1	Q50LG9
LRRC14	ENST00000292524.6 link	c.*1166T>C		3_prime_UTR_variant	Exon 4 of 4	1	NM_014665.4	ENSP00000292524.1	Q15048
LRRC24	ENST00000533758.1 link	c.1364A>G	p.Gln455Arg	missense_variant	Exon 5 of 5	5		ENSP00000435653.1	G3V1D8
LRRC14	ENST00000528528.1 link	n.63T>C		non_coding_transcript_exon_variant	Exon 1 of 3	3

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000140

AC:

AN:

1433398

Hom.:

Cov.:

AF XY:

0.00000281

AC XY:

AN XY:

711868

show subpopulations

Gnomad4 AFR exome

AF:

0.0000323

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.09e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152208

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74370

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000117

AC:

ExAC

AF:

0.00000834

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 05, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1373A>G (p.Q458R) alteration is located in exon 5 (coding exon 4) of the LRRC24 gene. This alteration results from a A to G substitution at nucleotide position 1373, causing the glutamine (Q) at amino acid position 458 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.32

BayesDel_addAF

Uncertain

0.15

BayesDel_noAF

Uncertain

-0.020

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.038

T;.

Eigen

Uncertain

0.46

Eigen_PC

Uncertain

0.44

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.87

D;D

M_CAP

Pathogenic

0.60

MetaRNN

Uncertain

0.53

D;D

MetaSVM

Benign

-0.55

MutationAssessor

Uncertain

2.0

M;.

PrimateAI

Pathogenic

0.86

PROVEAN

Benign

-1.7

N;N

REVEL

Benign

0.24

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.43

MVP

0.78

MPC

1.1

ClinPred

0.96

GERP RS

4.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.72

gMVP

0.61

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over