rs146922726

chr7-103697995-C-Achr7-103697995-C-T

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 3P and 4B. PM2 PP2 BP4_Strong

The NM_005045.4(RELN):c.1001G>T(p.Arg334Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,556 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R334H) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: RELN NM_005045.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.65

Genes affected

RELN (HGNC:9957): (reelin) This gene encodes a large secreted extracellular matrix protein thought to control cell-cell interactions critical for cell positioning and neuronal migration during brain development. This protein may be involved in schizophrenia, autism, bipolar disorder, major depression and in migration defects associated with temporal lobe epilepsy. Mutations of this gene are associated with autosomal recessive lissencephaly with cerebellar hypoplasia. Two transcript variants encoding distinct isoforms have been identified for this gene. Other transcript variants have been described but their full length nature has not been determined. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, RELN
• BP4: Computational evidence support a benign effect (MetaRNN=0.05542469).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RELN	NM_005045.4	c.1001G>T	p.Arg334Leu	missense_variant	10/65	ENST00000428762.6
RELN	NM_173054.3	c.1001G>T	p.Arg334Leu	missense_variant	10/64

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RELN	ENST00000428762.6	c.1001G>T	p.Arg334Leu	missense_variant	10/65	5	NM_005045.4	P5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000796 AC: 2 AN: 251286 Hom.: 0 AF XY: 0.0000147 AC XY: 2 AN XY: 135792

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

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: 0.0000176

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461556 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727076

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: 0.00000450

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Norman-Roberts syndrome;C4225327:Familial temporal lobe epilepsy 7 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Mar 03, 2023

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. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt RELN protein function. ClinVar contains an entry for this variant (Variation ID: 1410507). This variant has not been reported in the literature in individuals affected with RELN-related conditions. This variant is present in population databases (rs146922726, gnomAD 0.002%). This sequence change replaces arginine, which is basic and polar, with leucine, which is neutral and non-polar, at codon 334 of the RELN protein (p.Arg334Leu). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.085
BayesDel_addAF	Benign	-0.30	T
BayesDel_noAF	Benign	-0.66
Cadd	Benign	0.034
Dann	Benign	0.64
DEOGEN2	Benign	0.070	T;.;.
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.4
FATHMM_MKL	Benign	0.057	N
LIST_S2	Benign	0.68	T;T;T
M_CAP	Benign	0.0088	T
MetaRNN	Benign	0.055	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.55	N;N;.
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.20	T
PROVEAN	Benign	-1.2	N;N;N
REVEL	Benign	0.046
Sift	Benign	0.083	T;T;T
Sift4G	Benign	0.072	T;T;T
Polyphen		0.0	B;B;.
Vest4		0.15
MutPred		0.40		Gain of catalytic residue at R334 (P = 0.054);Gain of catalytic residue at R334 (P = 0.054);Gain of catalytic residue at R334 (P = 0.054);
MVP		0.12
MPC		0.21
ClinPred		0.068	T
GERP RS		-7.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.055
gMVP		0.26

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

LitVar

Other links and lift over

dbSNP: rs146922726; hg19: chr7-103338442;