Genetic Variant LRATD2:p.Arg238Pro (chr8-126556677-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_174911.5(LRATD2):c.713G>C(p.Arg238Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,457,996 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 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. R238L) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

LRATD2
NM_174911.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.07

Publications

0 publications found

Variant links:

Genes affected

LRATD2 (HGNC:24166): (LRAT domain containing 2) Located in cytoplasm and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

LRATD2 links:

PCAT1 (HGNC:43022): (prostate cancer associated transcript 1) This gene produces a long non-coding RNA that promotes cell proliferation and is upregulated in prostate, colorectal, and other cancers. This RNA negatively regulates the BRCA2 tumor suppressor protein and positively regulates Myc oncoprotein. It contains binding sites for microRNAs, and may act as a sponge for microRNAs that regulate cell growth pathways. [provided by RefSeq, Dec 2017]

PCAT1 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=0.1604971).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LRATD2	NM_174911.5 link	c.713G>C	p.Arg238Pro	missense_variant	Exon 2 of 2	ENST00000304916.4	NP_777571.1	Q96KN1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
LRATD2	ENST00000304916.4 link	c.713G>C	p.Arg238Pro	missense_variant	Exon 2 of 2	1	NM_174911.5	ENSP00000302578.3	Q96KN1
LRATD2	ENST00000652209.1 link	c.713G>C	p.Arg238Pro	missense_variant	Exon 1 of 1			ENSP00000498944.1	Q96KN1
PCAT1	ENST00000524320.2 link	n.355C>G		non_coding_transcript_exon_variant	Exon 1 of 2	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1457996

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

725124

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33430

American (AMR)

AF:

0.00

AC:

AN:

44478

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26064

East Asian (EAS)

AF:

0.00

AC:

AN:

39638

South Asian (SAS)

AF:

0.00

AC:

AN:

85978

European-Finnish (FIN)

AF:

0.0000388

AC:

AN:

51570

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1110960

Other (OTH)

AF:

0.00

AC:

AN:

60120

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000081), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.300

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000834

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.62

BayesDel_addAF

Benign

-0.090

BayesDel_noAF

Benign

-0.37

CADD

Pathogenic

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.016

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.25

FATHMM_MKL

Uncertain

0.79

LIST_S2

Uncertain

0.87

M_CAP

Benign

0.011

MetaRNN

Benign

0.16

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.2

PhyloP100

3.1

PrimateAI

Uncertain

0.49

PROVEAN

Benign

-1.6

REVEL

Benign

0.17

Sift

Uncertain

0.0090

Sift4G

Benign

0.067

Polyphen

0.041

Vest4

0.32

MutPred

0.35

Loss of catalytic residue at R238 (P = 0.0052);

MVP

0.44

MPC

1.6

ClinPred

0.80

GERP RS

4.4

Varity_R

0.32

gMVP

0.74

Mutation Taster

=70/30

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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8-126556677-C-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