Genetic Variant LRRC34:p.Cys274Phe (chr3-169796832-C-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001172779.2(LRRC34):c.821G>T(p.Cys274Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000103 in 1,611,614 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00047 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000064 ( 0 hom. )

Consequence

LRRC34
NM_001172779.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.62

Variant links:

Genes affected

LRRC34 (HGNC:28408): (leucine rich repeat containing 34) Predicted to be involved in cell differentiation. Predicted to be located in cytoplasm and nucleolus. [provided by Alliance of Genome Resources, Apr 2022]

LRRC34 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.11388525).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LRRC34	NM_001172779.2 link	c.821G>T	p.Cys274Phe	missense_variant	Exon 8 of 11	ENST00000446859.7	NP_001166250.1	Q8IZ02-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LRRC34	ENST00000446859.7 link	c.821G>T	p.Cys274Phe	missense_variant	Exon 8 of 11	2	NM_001172779.2	ENSP00000414635.1		Q8IZ02-2

Frequencies

GnomAD3 genomes

AF:

0.000473

AC:

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000193

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00347

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:

0.0000735

Gnomad OTH

AF:

0.00287

GnomAD3 exomes

AF:

0.0000481

AC:

AN:

249432

Hom.:

AF XY:

0.0000370

AC XY:

AN XY:

134956

show subpopulations

Gnomad AFR exome

AF:

0.0000618

Gnomad AMR exome

AF:

0.000147

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000354

Gnomad OTH exome

AF:

0.000330

GnomAD4 exome

AF:

0.0000644

AC:

AN:

1459332

Hom.:

Cov.:

AF XY:

0.0000441

AC XY:

AN XY:

725926

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000363

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:

0.0000585

Gnomad4 OTH exome

AF:

0.000216

GnomAD4 genome

AF:

0.000473

AC:

AN:

152282

Hom.:

Cov.:

AF XY:

0.000430

AC XY:

AN XY:

74460

show subpopulations

Gnomad4 AFR

AF:

0.000192

Gnomad4 AMR

AF:

0.00347

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00284

Alfa

AF:

0.0000847

Hom.:

Bravo

AF:

0.000990

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000494

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 16, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.821G>T (p.C274F) alteration is located in exon 8 (coding exon 8) of the LRRC34 gene. This alteration results from a G to T substitution at nucleotide position 821, causing the cysteine (C) at amino acid position 274 to be replaced by a phenylalanine (F). 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

0.28

BayesDel_addAF

Benign

-0.063

BayesDel_noAF

Benign

-0.13

CADD

Benign

DANN

Uncertain

0.98

Eigen

Benign

-0.15

Eigen_PC

Benign

-0.12

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.79

T;T;T;T

M_CAP

Benign

0.033

MetaRNN

Benign

0.11

T;T;T;T

MetaSVM

Benign

-0.95

PrimateAI

Uncertain

0.54

PROVEAN

Uncertain

-3.9

D;D;D;D

REVEL

Uncertain

0.32

Sift

Benign

0.038

D;D;D;D

Sift4G

Uncertain

0.037

D;T;T;D

Polyphen

0.73

.;P;.;.

Vest4

0.64

MVP

0.74

MPC

0.43

ClinPred

0.23

GERP RS

4.1

Varity_R

0.33

gMVP

0.60

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