7-103915467-G-T

Variant names:

• chr7-103915467-G-T
• rs2299403
• NM_005045.4:c.337+1608C>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_005045.4(RELN):​c.337+1608C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.234 in 151,954 control chromosomes in the GnomAD database, including 4,836 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.23 (4836 hom., cov: 32)
• Consequence: RELN NM_005045.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.194
• Publications: 2 publications found

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

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.99).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.361 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RELN	NM_005045.4	c.337+1608C>A		intron_variant	Intron 2 of 64	ENST00000428762.6	NP_005036.2
RELN	NM_173054.3	c.337+1608C>A		intron_variant	Intron 2 of 63		NP_774959.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RELN	ENST00000428762.6	c.337+1608C>A		intron_variant	Intron 2 of 64	5	NM_005045.4	ENSP00000392423.1

Frequencies

GnomAD3 genomes AF: 0.234 AC: 35537 AN: 151836 Hom.: 4830 Cov.: 32

Gnomad AFR AF: 0.366

Gnomad AMI AF: 0.148

Gnomad AMR AF: 0.235

Gnomad ASJ AF: 0.192

Gnomad EAS AF: 0.324

Gnomad SAS AF: 0.327

Gnomad FIN AF: 0.143

Gnomad MID AF: 0.228

Gnomad NFE AF: 0.159

Gnomad OTH AF: 0.211

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.234 AC: 35580 AN: 151954 Hom.: 4836 Cov.: 32 AF XY: 0.236 AC XY: 17489 AN XY: 74258

African (AFR) AF: 0.366 AC: 15144 AN: 41406

American (AMR) AF: 0.235 AC: 3579 AN: 15256

Ashkenazi Jewish (ASJ) AF: 0.192 AC: 667 AN: 3470

East Asian (EAS) AF: 0.324 AC: 1668 AN: 5150

South Asian (SAS) AF: 0.326 AC: 1575 AN: 4824

European-Finnish (FIN) AF: 0.143 AC: 1516 AN: 10590

Middle Eastern (MID) AF: 0.224 AC: 66 AN: 294

European-Non Finnish (NFE) AF: 0.159 AC: 10782 AN: 67944

Other (OTH) AF: 0.213 AC: 448 AN: 2108

Alfa AF: 0.199 Hom.: 457

Bravo AF: 0.243

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.99
CADD	Benign	1.4
DANN	Benign	0.50
PhyloP100		0.19
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs2299403; hg19: chr7-103555914;