9-100292954-A-G

Variant names:

• chr9-100292954-A-G
• NM_014425.5:c.2697A>G
• INVS p.Arg899Arg

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_014425.5(INVS):​c.2697A>G​(p.Arg899Arg) variant causes a synonymous 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. R899R) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: INVS NM_014425.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.739
• Publications: 0 publications found

Genes affected

INVS (HGNC:17870): (inversin) This gene encodes a protein containing multiple ankyrin domains and two IQ calmodulin-binding domains. The encoded protein may function in renal tubular development and function, and in left-right axis determination. This protein interacts with nephrocystin and infers a connection between primary cilia function and left-right axis determination. A similar protein in mice interacts with calmodulin. Mutations in this gene have been associated with nephronophthisis type 2. Multiple transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, May 2012]

INVS Gene-Disease associations (from GenCC):

• nephronophthisis 2

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics
• Senior-Loken syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.64).
• BP7: Synonymous conserved (PhyloP=-0.739 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014425.5. 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
	INVS	NM_014425.5	MANE Select	c.2697A>G	p.Arg899Arg	synonymous	Exon 14 of 17	NP_055240.2
	INVS	NM_001318381.2		c.2409A>G	p.Arg803Arg	synonymous	Exon 15 of 18	NP_001305310.1
	INVS	NM_001318382.2		c.1719A>G	p.Arg573Arg	synonymous	Exon 14 of 17	NP_001305311.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	INVS	ENST00000262457.7	TSL:1 MANE Select	c.2697A>G	p.Arg899Arg	synonymous	Exon 14 of 17	ENSP00000262457.2	Q9Y283-1
	INVS	ENST00000885857.1		c.2697A>G	p.Arg899Arg	synonymous	Exon 15 of 18	ENSP00000555916.1
	INVS	ENST00000885859.1		c.2697A>G	p.Arg899Arg	synonymous	Exon 15 of 18	ENSP00000555918.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.64
CADD	Benign	6.7
DANN	Benign	0.72
PhyloP100		-0.74

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr9-103055236;