16-2102864-C-A

Variant names:

• chr16-2102864-C-A
• rs13337123
• NM_001009944.3:c.8898G>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001009944.3(PKD1):​c.8898G>T​(p.Glu2966Asp) 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. 15/22 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 nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E2966Q) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PKD1 NM_001009944.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.628
• Publications: 11 publications found

Genes affected

PKD1 (HGNC:9008): (polycystin 1, transient receptor potential channel interacting) This gene encodes a member of the polycystin protein family. The encoded glycoprotein contains a large N-terminal extracellular region, multiple transmembrane domains and a cytoplasmic C-tail. It is an integral membrane protein that functions as a regulator of calcium permeable cation channels and intracellular calcium homoeostasis. It is also involved in cell-cell/matrix interactions and may modulate G-protein-coupled signal-transduction pathways. It plays a role in renal tubular development, and mutations in this gene cause autosomal dominant polycystic kidney disease type 1 (ADPKD1). ADPKD1 is characterized by the growth of fluid-filled cysts that replace normal renal tissue and result in end-stage renal failure. Splice variants encoding different isoforms have been noted for this gene. Also, six pseudogenes, closely linked in a known duplicated region on chromosome 16p, have been described. [provided by RefSeq, Oct 2008]

PKD1 Gene-Disease associations (from GenCC):

• autosomal dominant polycystic kidney disease

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
• polycystic kidney disease 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• autosomal recessive polycystic kidney disease

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• Caroli disease

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.14101872).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001009944.3. 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
	PKD1	NM_001009944.3	MANE Select	c.8898G>T	p.Glu2966Asp	missense	Exon 24 of 46	NP_001009944.3	P98161-1
	PKD1	NM_000296.4		c.8898G>T	p.Glu2966Asp	missense	Exon 24 of 46	NP_000287.4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PKD1	ENST00000262304.9	TSL:1 MANE Select	c.8898G>T	p.Glu2966Asp	missense	Exon 24 of 46	ENSP00000262304.4	P98161-1
	PKD1	ENST00000423118.5	TSL:1	c.8898G>T	p.Glu2966Asp	missense	Exon 24 of 46	ENSP00000399501.1	P98161-3
	PKD1	ENST00000480227.5	TSL:1	n.635G>T		non_coding_transcript_exon	Exon 2 of 8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 39

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.63
CADD	Benign	2.6
DANN	Benign	0.74
DEOGEN2	Benign	0.16	T
Eigen	Benign	-0.49
Eigen_PC	Benign	-0.64
FATHMM_MKL	Benign	0.30	N
LIST_S2	Benign	0.45	T
M_CAP	Uncertain	0.13	D
MetaRNN	Benign	0.14	T
MetaSVM	Benign	-0.94	T
MutationAssessor	Benign	1.7	L
PhyloP100		0.63
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-0.53	N
REVEL	Benign	0.029
Sift	Benign	0.29	T
Sift4G	Benign	0.099	T
Polyphen		0.0090	B
Vest4		0.043
MutPred		0.38		Loss of sheet (P = 0.0457)
MVP		0.53
ClinPred		0.062	T
GERP RS		2.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.029
gMVP		0.26
Mutation Taster		=63/37	polymorphism

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

Other links and lift over

dbSNP: rs13337123; hg19: chr16-2152865;