3-75937566-G-C

Variant names:

• chr3-75937566-G-C
• rs78834776
• NM_001378191.1:c.73G>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001378191.1(ROBO2):​c.73G>C​(p.Val25Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/17 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V25M) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ROBO2 NM_001378191.1 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.585
• Publications: 0 publications found

Genes affected

ROBO2 (HGNC:10250): (roundabout guidance receptor 2) The protein encoded by this gene belongs to the ROBO family, part of the immunoglobulin superfamily of proteins that are highly conserved from fly to human. The encoded protein is a transmembrane receptor for the slit homolog 2 protein and functions in axon guidance and cell migration. Mutations in this gene are associated with vesicoureteral reflux, characterized by the backward flow of urine from the bladder into the ureters or the kidney. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2014]

ROBO2 Gene-Disease associations (from GenCC):

• vesicoureteral reflux 2

  Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics, PanelApp Australia, Labcorp Genetics (formerly Invitae)
• familial vesicoureteral reflux

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.060958594).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001378191.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ROBO2	NM_001378191.1		c.73G>C	p.Val25Leu	missense	Exon 2 of 30	NP_001365120.1	A0A8Q3SIW8
	ROBO2	NM_001378190.1		c.73G>C	p.Val25Leu	missense	Exon 2 of 29	NP_001365119.1
	ROBO2	NM_001378195.1		c.73G>C	p.Val25Leu	missense	Exon 2 of 29	NP_001365124.1	A0A8Q3SIU0

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ROBO2	ENST00000696630.1		c.73G>C	p.Val25Leu	missense	Exon 2 of 30	ENSP00000512767.1	A0A8Q3SIW8
	ROBO2	ENST00000696629.1		c.73G>C	p.Val25Leu	missense	Exon 2 of 29	ENSP00000512766.1	A0A8Q3SIU0
	ROBO2	ENST00000471893.2	TSL:4	c.73G>C	p.Val25Leu	missense	Exon 2 of 29	ENSP00000418190.2	H7C4U9

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.33
BayesDel_addAF	Benign	-0.28	T
BayesDel_noAF	Benign	-0.65
CADD	Benign	0.088
DANN	Benign	0.78
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.012	N
LIST_S2	Benign	0.41	T
M_CAP	Benign	0.015	T
MetaRNN	Benign	0.061	T
MetaSVM	Benign	-0.99	T
PhyloP100		0.58
PROVEAN	Benign	0.50	N
REVEL	Benign	0.021
Sift	Benign	0.54	T
Sift4G	Benign	0.21	T
Vest4		0.15
MutPred		0.45		Loss of MoRF binding (P = 0.0974)
MVP		0.10
MPC		0.22
ClinPred		0.027	T
GERP RS		2.0
gMVP		0.26

Splicing

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

Other links and lift over

dbSNP: rs78834776; hg19: chr3-75986717;