chr15-100924705-G-T

Position:

• chr15-100924705-G-T

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PVS1_Strong PM2 PP5_Moderate

The NM_024652.6(LRRK1):​c.73G>T​(p.Glu25Ter) variant causes a stop gained change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: LRRK1 NM_024652.6 stop_gained
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 3.89

Genes affected

LRRK1 (HGNC:18608): (leucine rich repeat kinase 1) This gene encodes a multi-domain protein that is a leucine-rich repeat kinase and a GDP/GTP binding protein. The encoded protein is thought to play a role in the regulation of bone mass. Mice lacking a similar gene showed severe osteopetrosis, increased bone mineralization and decreased bone resorption. [provided by RefSeq, Jan 2017]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.988 CDS is truncated, and there are 0 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 15-100924705-G-T is Pathogenic according to our data. Variant chr15-100924705-G-T is described in ClinVar as [Pathogenic]. Clinvar id is 2031900.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LRRK1	NM_024652.6	c.73G>T	p.Glu25Ter	stop_gained	2/34	ENST00000388948.8	NP_078928.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LRRK1	ENST00000388948.8	c.73G>T	p.Glu25Ter	stop_gained	2/34	5	NM_024652.6	ENSP00000373600	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 05, 2023

This sequence change creates a premature translational stop signal (p.Glu25*) in the LRRK1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in LRRK1 are known to be pathogenic (PMID: 23526378, 31571209, 32119750). For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 2031900). This variant has not been reported in the literature in individuals affected with LRRK1-related conditions. This variant is not present in population databases (gnomAD no frequency). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
CADD	Pathogenic	37
DANN	Uncertain	1.0
Eigen	Pathogenic	0.78
Eigen_PC	Uncertain	0.57
FATHMM_MKL	Uncertain	0.76	D
MutationTaster	Benign	1.0	A;A;D
Vest4		0.49
GERP RS		4.7

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr15-101464910; COSMIC: COSV99436959;