Genetic Variant RELN:c.2466-8_2466-7dupTT (chr7-103630182-G-GAA) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_005045.4(RELN):c.2466-8_2466-7dupTT variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000164 in 1,121,514 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00016 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

RELN
NM_005045.4 splice_region, intron

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.884

Publications

1 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: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RELN	NM_005045.4 link	c.2466-8_2466-7dupTT		splice_region_variant, intron_variant	Intron 19 of 64	ENST00000428762.6	NP_005036.2	P78509-1
RELN	NM_173054.3 link	c.2466-8_2466-7dupTT		splice_region_variant, intron_variant	Intron 19 of 63		NP_774959.1	P78509-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RELN	ENST00000428762.6 link	c.2466-7_2466-6insTT		splice_region_variant, intron_variant	Intron 19 of 64	5	NM_005045.4	ENSP00000392423.1		P78509-1

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

138614

Hom.:

Cov.:

Gnomad AFR

AF:

0.00

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

GnomAD2 exomes

AF:

0.000424

AC:

AN:

101368

AF XY:

0.000550

show subpopulations

Gnomad AFR exome

AF:

0.000277

Gnomad AMR exome

AF:

0.000250

Gnomad ASJ exome

AF:

0.000283

Gnomad EAS exome

AF:

0.000131

Gnomad FIN exome

AF:

0.000435

Gnomad NFE exome

AF:

0.000446

Gnomad OTH exome

AF:

0.000441

GnomAD4 exome

AF:

0.000164

AC:

184

AN:

1121514

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

558698

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.000239

AC:

AN:

25106

American (AMR)

AF:

0.000191

AC:

AN:

31490

Ashkenazi Jewish (ASJ)

AF:

0.000210

AC:

AN:

19088

East Asian (EAS)

AF:

0.0000677

AC:

AN:

29550

South Asian (SAS)

AF:

0.000264

AC:

AN:

64426

European-Finnish (FIN)

AF:

0.0000514

AC:

AN:

38902

Middle Eastern (MID)

AF:

0.000438

AC:

AN:

4566

European-Non Finnish (NFE)

AF:

0.000159

AC:

137

AN:

862474

Other (OTH)

AF:

0.000174

AC:

AN:

45912

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.238

Heterozygous variant carriers

129

161

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

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

138614

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

67026

African (AFR)

AF:

0.00

AC:

AN:

37668

American (AMR)

AF:

0.00

AC:

AN:

13892

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3298

East Asian (EAS)

AF:

0.00

AC:

AN:

4778

South Asian (SAS)

AF:

0.00

AC:

AN:

4442

European-Finnish (FIN)

AF:

0.00

AC:

AN:

7982

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

63538

Other (OTH)

AF:

0.00

AC:

AN:

1860

Alfa

AF:

0.000988

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

-0.88

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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7-103630182-GAA-GAAAA

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over