7-103989298-G-A

Position:

chr7-103989298-G-A

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2BP4_StrongBS1_Supporting

The NM_005045.4(RELN):c.59C>T(p.Thr20Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000509 in 1,612,042 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00022 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000033 ( 0 hom. )

Consequence

RELN
NM_005045.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 3.06

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), RELN. . Gene score misZ 2.2497 (greater than the threshold 3.09). Trascript score misZ 4.2638 (greater than threshold 3.09). GenCC has associacion of gene with ankylosing spondylitis, lissencephaly with cerebellar hypoplasia, Norman-Roberts syndrome, complex neurodevelopmental disorder, autosomal dominant epilepsy with auditory features, familial temporal lobe epilepsy 7.

BP4

Computational evidence support a benign effect (MetaRNN=0.0422934).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000224 (34/151662) while in subpopulation AFR AF= 0.000822 (34/41352). AF 95% confidence interval is 0.000604. There are 0 homozygotes in gnomad4. There are 19 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RELN	NM_005045.4 linkuse as main transcript	c.59C>T	p.Thr20Met	missense_variant	1/65	ENST00000428762.6	NP_005036.2
RELN	NM_173054.3 linkuse as main transcript	c.59C>T	p.Thr20Met	missense_variant	1/64		NP_774959.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RELN	ENST00000428762.6 linkuse as main transcript	c.59C>T	p.Thr20Met	missense_variant	1/65	5	NM_005045.4	ENSP00000392423	P5	P78509-1

Frequencies

GnomAD3 genomes

AF:

0.000224

AC:

AN:

151548

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000825

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000696

AC:

AN:

244322

Hom.:

AF XY:

0.0000450

AC XY:

AN XY:

133450

show subpopulations

Gnomad AFR exome

AF:

0.00104

Gnomad AMR exome

AF:

0.0000291

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000329

AC:

AN:

1460380

Hom.:

Cov.:

AF XY:

0.0000220

AC XY:

AN XY:

726480

show subpopulations

Gnomad4 AFR exome

AF:

0.00105

Gnomad4 AMR exome

AF:

0.0000448

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.000166

GnomAD4 genome

AF:

0.000224

AC:

AN:

151662

Hom.:

Cov.:

AF XY:

0.000256

AC XY:

AN XY:

74138

show subpopulations

Gnomad4 AFR

AF:

0.000822

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.000234

ESP6500AA

AF:

0.00114

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000577

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

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

Mar 19, 2024

Variant summary: RELN c.59C>T (p.Thr20Met) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 7e-05 in 244322 control chromosomes. This frequency does not allow for any conclusion about variant significance. Although the number of occurrences of this variant in gnomAD make it unlikely to be pathogenic for autosomal dominant Epilepsy Familial Temporal Lobe 7, a possible effect in autosomal recessive Lissencephaly 2 (Norman-Roberts type) cannot be definitively ruled out using these data. To our knowledge, no occurrence of c.59C>T in individuals affected with Epilepsy Familial Temporal Lobe 7 or Lissencephaly 2 (Norman-Roberts type) has been reported, and no experimental evidence demonstrating its impact on protein function has been reported. ClinVar contains an entry for this variant (Variation ID: 542588). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Norman-Roberts syndrome;C4225327:Familial temporal lobe epilepsy 7;C4551957:Epilepsy, familial temporal lobe, 1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 31, 2018

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Dec 21, 2020

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 -

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

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 11, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.54

CADD

Benign

DANN

Benign

0.96

DEOGEN2

Benign

0.065

T;.;.

Eigen

Benign

-0.29

Eigen_PC

Benign

-0.095

FATHMM_MKL

Uncertain

0.78

LIST_S2

Benign

0.81

T;T;T

M_CAP

Uncertain

0.10

MetaRNN

Benign

0.042

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.0

N;N;.

MutationTaster

Benign

0.99

N;N;N

PrimateAI

Uncertain

0.77

PROVEAN

Benign

-0.45

N;N;N

REVEL

Benign

0.041

Sift

Benign

0.21

T;T;T

Sift4G

Benign

0.31

T;T;T

Polyphen

0.0010

B;B;.

Vest4

0.21

MVP

0.13

MPC

0.17

ClinPred

0.032

GERP RS

3.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.029

gMVP

0.35

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