chr3-169806862-C-T

Position:

• chr3-169806862-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001172779.2(LRRC34):​c.514G>A​(p.Ala172Thr) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: LRRC34 NM_001172779.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.00

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 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.829

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LRRC34	NM_001172779.2	c.514G>A	p.Ala172Thr	missense_variant	5/11	ENST00000446859.7	NP_001166250.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LRRC34	ENST00000446859.7	c.514G>A	p.Ala172Thr	missense_variant	5/11	2	NM_001172779.2	ENSP00000414635.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1447770 Hom.: 0 Cov.: 27 AF XY: 0.00 AC XY: 0 AN XY: 720754

Gnomad4 AFR exome AF: 0.00

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 27, 2024

The c.514G>A (p.A172T) alteration is located in exon 5 (coding exon 5) of the LRRC34 gene. This alteration results from a G to A substitution at nucleotide position 514, causing the alanine (A) at amino acid position 172 to be replaced by a threonine (T). 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	Uncertain	0.40
BayesDel_addAF	Uncertain	0.050	T
BayesDel_noAF	Benign	-0.17
CADD	Uncertain	26
DANN	Uncertain	1.0
Eigen	Pathogenic	0.74
Eigen_PC	Pathogenic	0.70
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.83	T;T;T
M_CAP	Benign	0.040	D
MetaRNN	Pathogenic	0.83	D;D;D
MetaSVM	Uncertain	-0.18	T
PrimateAI	Uncertain	0.56	T
PROVEAN	Uncertain	-3.3	D;D;D
REVEL	Benign	0.29
Sift	Benign	0.067	T;T;T
Sift4G	Benign	0.10	T;T;T
Polyphen		1.0	.;D;.
Vest4		0.87
MVP		0.66
MPC		0.28
ClinPred		0.99	D
GERP RS		5.1
Varity_R		0.42
gMVP		0.57

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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

Other links and lift over

dbSNP: rs1779392756; hg19: chr3-169524650;