rs2304503

Positions:

• chr3-78746928-C-A
• chr3-78746928-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.500-28G>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.506 in 1,454,514 control chromosomes in the GnomAD database, including 189,620 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 0.47 (17905 hom., cov: 32)
  • Exomes 𝑓: 0.51 (171715 hom.)
• Consequence: ROBO1 NM_002941.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.05

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=-0.84).
• BA1: GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.542 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ROBO1	NM_002941.4	c.500-28G>T		intron_variant		ENST00000464233.6	NP_002932.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ROBO1	ENST00000464233.6	c.500-28G>T		intron_variant		5	NM_002941.4	ENSP00000420321	P3

Frequencies

GnomAD3 genomes AF: 0.473 AC: 71841 AN: 151832 Hom.: 17909 Cov.: 32

Gnomad AFR AF: 0.344

Gnomad AMI AF: 0.578

Gnomad AMR AF: 0.552

Gnomad ASJ AF: 0.590

Gnomad EAS AF: 0.238

Gnomad SAS AF: 0.541

Gnomad FIN AF: 0.505

Gnomad MID AF: 0.592

Gnomad NFE AF: 0.533

Gnomad OTH AF: 0.503

GnomAD3 exomes AF: 0.503 AC: 96289 AN: 191400 Hom.: 24812 AF XY: 0.506 AC XY: 52533 AN XY: 103730

Gnomad AFR exome AF: 0.348

Gnomad AMR exome AF: 0.583

Gnomad ASJ exome AF: 0.593

Gnomad EAS exome AF: 0.227

Gnomad SAS exome AF: 0.540

Gnomad FIN exome AF: 0.518

Gnomad NFE exome AF: 0.531

Gnomad OTH exome AF: 0.535

GnomAD4 exome AF: 0.510 AC: 664013 AN: 1302564 Hom.: 171715 Cov.: 25 AF XY: 0.512 AC XY: 326505 AN XY: 638064

Gnomad4 AFR exome AF: 0.348

Gnomad4 AMR exome AF: 0.569

Gnomad4 ASJ exome AF: 0.584

Gnomad4 EAS exome AF: 0.238

Gnomad4 SAS exome AF: 0.532

Gnomad4 FIN exome AF: 0.515

Gnomad4 NFE exome AF: 0.520

Gnomad4 OTH exome AF: 0.498

GnomAD4 genome AF: 0.473 AC: 71845 AN: 151950 Hom.: 17905 Cov.: 32 AF XY: 0.476 AC XY: 35314 AN XY: 74250

Gnomad4 AFR AF: 0.343

Gnomad4 AMR AF: 0.552

Gnomad4 ASJ AF: 0.590

Gnomad4 EAS AF: 0.238

Gnomad4 SAS AF: 0.540

Gnomad4 FIN AF: 0.505

Gnomad4 NFE AF: 0.533

Gnomad4 OTH AF: 0.498

Alfa AF: 0.518 Hom.: 26965

Bravo AF: 0.465

Asia WGS AF: 0.368 AC: 1282 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	7.7
DANN	Benign	0.54

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: rs2304503; hg19: chr3-78796078; COSMIC: COSV71397238;