22-20982382-C-A

Variant names:

• chr22-20982382-C-A
• NM_006767.4:c.11C>A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_006767.4(LZTR1):​c.11C>A​(p.Pro4Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: LZTR1 NM_006767.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: 1.40

Genes affected

LZTR1 (HGNC:6742): (leucine zipper like post translational regulator 1) This gene encodes a member of the BTB-kelch superfamily. Initially described as a putative transcriptional regulator based on weak homology to members of the basic leucine zipper-like family, the encoded protein subsequently has been shown to localize exclusively to the Golgi network where it may help stabilize the Gogli complex. Deletion of this gene may be associated with DiGeorge syndrome. [provided by RefSeq, Jul 2008]

ENSG00000285314 (HGNC:):

ACMG classification

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=0.13229513).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LZTR1	NM_006767.4	c.11C>A	p.Pro4Gln	missense_variant	Exon 1 of 21	ENST00000646124.2	NP_006758.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LZTR1	ENST00000646124.2	c.11C>A	p.Pro4Gln	missense_variant	Exon 1 of 21		NM_006767.4	ENSP00000496779.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1401780 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 691728

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.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Uncertain:1

Nov 10, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided Uncertain:1

Jan 15, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces proline, which is neutral and non-polar, with glutamine, which is neutral and polar, at codon 4 of the LZTR1 protein (p.Pro4Gln). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with LZTR1-related conditions. ClinVar contains an entry for this variant (Variation ID: 1747014). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed for this missense variant. However, the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on LZTR1 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Hereditary cancer-predisposing syndrome;CN230736:Cardiovascular phenotype Uncertain:1

Feb 18, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.P4Q variant (also known as c.11C>A), located in coding exon 1 of the LZTR1 gene, results from a C to A substitution at nucleotide position 11. The proline at codon 4 is replaced by glutamine, an amino acid with similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.51
CADD	Uncertain	24
DANN	Benign	0.97
DEOGEN2	Benign	0.032	T;T;.
Eigen	Benign	-0.49
Eigen_PC	Benign	-0.46
FATHMM_MKL	Benign	0.42	N
LIST_S2	Benign	0.73	.;T;T
M_CAP	Uncertain	0.11	D
MetaRNN	Benign	0.13	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.69	N;N;.
PrimateAI	Uncertain	0.56	T
PROVEAN	Benign	-0.53	N;.;.
REVEL	Benign	0.019
Sift	Benign	0.28	T;.;.
Sift4G	Benign	0.15	T;.;.
Polyphen		0.30	B;B;.
Vest4		0.20
MutPred		0.38		Loss of glycosylation at P4 (P = 0.0189);Loss of glycosylation at P4 (P = 0.0189);Loss of glycosylation at P4 (P = 0.0189);
MVP		0.085
MPC		1.5
ClinPred		0.42	T
GERP RS		3.8
RBP_binding_hub_radar		0.97
RBP_regulation_power_radar		2.1
Varity_R		0.051
gMVP		0.53

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr22-21336671;