7-103542755-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBS1_Supporting

The NM_005045.4(RELN):c.6647G>A(p.Arg2216Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000948 in 1,613,828 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000088 ( 0 hom. )

Consequence

RELN
NM_005045.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:2

Conservation

PhyloP100: 2.21

Publications

3 publications found

Variant links:

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]

RELN Gene-Disease associations (from GenCC):

lissencephaly with cerebellar hypoplasia
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
Norman-Roberts syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Illumina, Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet, G2P, PanelApp Australia
familial temporal lobe epilepsy 7
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
autosomal dominant epilepsy with auditory features
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
ankylosing spondylitis
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
complex neurodevelopmental disorder
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

RELN links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.056467175).

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.000158 (24/152052) while in subpopulation AMR AF = 0.000327 (5/15272). AF 95% confidence interval is 0.000129. There are 0 homozygotes in GnomAd4. There are 11 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RELN	NM_005045.4 link	c.6647G>A	p.Arg2216Gln	missense_variant	Exon 43 of 65	ENST00000428762.6	NP_005036.2
RELN	NM_173054.3 link	c.6647G>A	p.Arg2216Gln	missense_variant	Exon 43 of 64		NP_774959.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RELN	ENST00000428762.6 link	c.6647G>A	p.Arg2216Gln	missense_variant	Exon 43 of 65	5	NM_005045.4	ENSP00000392423.1

Frequencies

GnomAD3 genomes

AF:

0.000158

AC:

AN:

152052

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

Gnomad ASJ

AF:

0.00202

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000163

AC:

AN:

251314

AF XY:

0.000177

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000318

Gnomad ASJ exome

AF:

0.00159

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000792

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.0000882

AC:

129

AN:

1461776

Hom.:

Cov.:

AF XY:

0.0000880

AC XY:

AN XY:

727184

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.000335

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00214

AC:

AN:

26128

East Asian (EAS)

AF:

0.0000504

AC:

AN:

39676

South Asian (SAS)

AF:

0.0000580

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000306

AC:

AN:

1111946

Other (OTH)

AF:

0.000265

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.472

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000158

AC:

AN:

152052

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74266

show subpopulations

African (AFR)

AF:

0.0000724

AC:

AN:

41410

American (AMR)

AF:

0.000327

AC:

AN:

15272

Ashkenazi Jewish (ASJ)

AF:

0.00202

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4812

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10588

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000132

AC:

AN:

68002

Other (OTH)

AF:

0.00

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.515

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000171

Hom.:

Bravo

AF:

0.000212

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.000115

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:6Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:3

Aug 28, 2013

Eurofins Ntd Llc (ga)

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 30, 2020

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Jan 12, 2022

Mayo Clinic Laboratories, Mayo Clinic

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Uncertain:1

Mar 17, 2025

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

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: RELN c.6647G>A (p.Arg2216Gln) results in a conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00016 in 251314 control chromosomes. This frequency is not significantly higher than estimated for a pathogenic variant in RELN causing Epilepsy Familial Temporal Lobe 7, allowing no conclusion about variant significance. To our knowledge, no occurrence of c.6647G>A in individuals affected with Epilepsy Familial Temporal Lobe 7 and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 95226). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Norman-Roberts syndrome

Uncertain:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Norman-Roberts syndrome;C4225327:Familial temporal lobe epilepsy 7;CN030884:Epilepsy, familial temporal lobe, 1

Uncertain:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

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

Benign:1

Jan 22, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

RELN-related disorder

Benign:1

Sep 28, 2022

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.074

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.44

CADD

Uncertain

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.10

T;.;.

Eigen

Uncertain

0.35

Eigen_PC

Uncertain

0.43

FATHMM_MKL

Uncertain

0.89

LIST_S2

Uncertain

0.89

D;D;D

M_CAP

Benign

0.020

MetaRNN

Benign

0.056

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.0

L;L;.

PhyloP100

2.2

PrimateAI

Uncertain

0.50

PROVEAN

Benign

-1.0

N;N;N

REVEL

Benign

0.14

Sift

Benign

0.28

T;T;T

Sift4G

Benign

0.32

T;T;T

Polyphen

1.0

D;D;.

Vest4

0.23

MVP

0.50

MPC

0.74

ClinPred

0.061

GERP RS

5.9

Varity_R

0.11

gMVP

0.52

Mutation Taster

=84/16

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over