rs398122932

Variant names:

• chr4-88008038-A-AGAG
• rs398122932
• NM_000297.4:c.306_307insAGG

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM2 PP5 BP3

The NM_000297.4(PKD2):​c.306_307insAGG​(p.Glu102_Val103insArg) variant causes a conservative inframe insertion change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PKD2 NM_000297.4 conservative_inframe_insertion
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 2.00
• Publications: 1 publications found

Genes affected

PKD2 (HGNC:9009): (polycystin 2, transient receptor potential cation channel) This gene encodes a member of the polycystin protein family. The encoded protein is a multi-pass membrane protein that functions as a calcium permeable cation channel, and is involved in calcium transport and calcium signaling in renal epithelial cells. This protein interacts with polycystin 1, and they may be partners in a common signaling cascade involved in tubular morphogenesis. Mutations in this gene are associated with autosomal dominant polycystic kidney disease type 2. [provided by RefSeq, Mar 2011]

PKD2 Gene-Disease associations (from GenCC):

• autosomal dominant polycystic kidney disease

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• polycystic kidney disease 2

  Inheritance: AD, AR Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics

ENSG00000286618 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 4-88008038-A-AGAG is Pathogenic according to our data. Variant chr4-88008038-A-AGAG is described in ClinVar as Pathogenic. ClinVar VariationId is 40115.Status of the report is no_assertion_criteria_provided, 0 stars.
• BP3: Nonframeshift variant in repetitive region in NM_000297.4

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000297.4. 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
	PKD2	NM_000297.4	MANE Select	c.306_307insAGG	p.Glu102_Val103insArg	conservative_inframe_insertion	Exon 1 of 15	NP_000288.1	Q13563-1
	PKD2	NM_001440544.1		c.306_307insAGG	p.Glu102_Val103insArg	conservative_inframe_insertion	Exon 1 of 14	NP_001427473.1
	PKD2	NR_156488.2		n.405_406insAGG		non_coding_transcript_exon	Exon 1 of 14

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PKD2	ENST00000237596.7	TSL:1 MANE Select	c.306_307insAGG	p.Glu102_Val103insArg	conservative_inframe_insertion	Exon 1 of 15	ENSP00000237596.2	Q13563-1
	PKD2	ENST00000927447.1		c.306_307insAGG	p.Glu102_Val103insArg	conservative_inframe_insertion	Exon 1 of 15	ENSP00000597506.1
	PKD2	ENST00000927448.1		c.306_307insAGG	p.Glu102_Val103insArg	conservative_inframe_insertion	Exon 1 of 14	ENSP00000597507.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Polycystic kidney disease 2 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		2.0
Mutation Taster		=78/22	disease causing (ClinVar)

Splicing

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

Other links and lift over

dbSNP: rs398122932; hg19: chr4-88929190;