3-78753535-C-T

Position:

• chr3-78753535-C-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_002941.4(ROBO1):​c.500-6635G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.348 in 151,942 control chromosomes in the GnomAD database, including 11,548 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 0.35 (11548 hom., cov: 32)
• Consequence: ROBO1 NM_002941.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.18

Genes affected

ROBO1 (HGNC:10249): (roundabout guidance receptor 1) Bilateral symmetric nervous systems have special midline structures that establish a partition between the two mirror image halves. Some axons project toward and across the midline in response to long-range chemoattractants emanating from the midline. The product of this gene is a member of the immunoglobulin gene superfamily and encodes an integral membrane protein that functions in axon guidance and neuronal precursor cell migration. This receptor is activated by SLIT-family proteins, resulting in a repulsive effect on glioma cell guidance in the developing brain. A related gene is located at an adjacent region on chromosome 3. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2009]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.482 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ROBO1	NM_002941.4	c.500-6635G>A		intron_variant		ENST00000464233.6	NP_002932.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ROBO1	ENST00000464233.6	c.500-6635G>A		intron_variant		5	NM_002941.4	ENSP00000420321	P3

Frequencies

GnomAD3 genomes AF: 0.348 AC: 52909 AN: 151822 Hom.: 11557 Cov.: 32

Gnomad AFR AF: 0.0874

Gnomad AMI AF: 0.529

Gnomad AMR AF: 0.478

Gnomad ASJ AF: 0.533

Gnomad EAS AF: 0.228

Gnomad SAS AF: 0.499

Gnomad FIN AF: 0.454

Gnomad MID AF: 0.516

Gnomad NFE AF: 0.446

Gnomad OTH AF: 0.389

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

GnomAD4 genome AF: 0.348 AC: 52892 AN: 151942 Hom.: 11548 Cov.: 32 AF XY: 0.355 AC XY: 26340 AN XY: 74266

Gnomad4 AFR AF: 0.0871

Gnomad4 AMR AF: 0.479

Gnomad4 ASJ AF: 0.533

Gnomad4 EAS AF: 0.228

Gnomad4 SAS AF: 0.498

Gnomad4 FIN AF: 0.454

Gnomad4 NFE AF: 0.446

Gnomad4 OTH AF: 0.384

Alfa AF: 0.274 Hom.: 815

Bravo AF: 0.334

Asia WGS AF: 0.327 AC: 1139 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	0.23
DANN	Benign	0.16

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

Other links and lift over

dbSNP: rs365165; hg19: chr3-78802685;