rs1616940

Variant names:

• chr16-2114843-A-C
• rs1616940
• NM_001009944.3:c.2180T>G

Your query was ambiguous. Multiple possible variants found:

• chr16-2114843-A-C
• chr16-2114843-A-G
• chr16-2114843-A-T

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2 PM5 PP3_Moderate PP5

The NM_001009944.3(PKD1):​c.2180T>G​(p.Leu727Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000769 in 1,300,450 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L727Q) has been classified as Likely pathogenic.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 7.7e-7 (0 hom.)
• Consequence: PKD1 NM_001009944.3 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:3 U:2
• Conservation: PhyloP100: 5.42
• 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: Likely_pathogenic. The variant received 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr16-2114843-A-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 586255.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.865
• PP5: Variant 16-2114843-A-C is Pathogenic according to our data. Variant chr16-2114843-A-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 994718.

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.2180T>G	p.Leu727Arg	missense	Exon 11 of 46	NP_001009944.3	P98161-1
	PKD1	NM_000296.4		c.2180T>G	p.Leu727Arg	missense	Exon 11 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.2180T>G	p.Leu727Arg	missense	Exon 11 of 46	ENSP00000262304.4	P98161-1
	PKD1	ENST00000423118.5	TSL:1	c.2180T>G	p.Leu727Arg	missense	Exon 11 of 46	ENSP00000399501.1	P98161-3
	PKD1	ENST00000488185.2	TSL:5	c.470+2646T>G		intron	N/A	ENSP00000456672.1	H3BSE9

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.69e-7 AC: 1 AN: 1300450 Hom.: 0 Cov.: 25 AF XY: 0.00000155 AC XY: 1 AN XY: 645642

African (AFR) AF: 0.00 AC: 0 AN: 29520

American (AMR) AF: 0.00 AC: 0 AN: 35612

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24618

East Asian (EAS) AF: 0.00 AC: 0 AN: 35302

South Asian (SAS) AF: 0.0000129 AC: 1 AN: 77410

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 33682

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3920

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1005506

Other (OTH) AF: 0.00 AC: 0 AN: 54880

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
2	1	-	Polycystic kidney disease, adult type (3)
-	1	-	not provided (1)
1	-	-	PKD1-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.69
BayesDel_addAF	Pathogenic	0.26	D
BayesDel_noAF	Uncertain	0.13
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.72	D
Eigen	Uncertain	0.44
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Benign	0.74	T
M_CAP	Pathogenic	0.83	D
MetaRNN	Pathogenic	0.86	D
MetaSVM	Benign	-0.40	T
MutationAssessor	Uncertain	2.7	M
PhyloP100		5.4
PrimateAI	Uncertain	0.60	T
PROVEAN	Uncertain	-3.2	D
REVEL	Uncertain	0.36
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0020	D
Polyphen		1.0	D
Vest4		0.83
MutPred		0.42		Gain of methylation at L727 (P = 0.0377)
MVP		0.90
ClinPred		0.96	D
GERP RS		5.2
Varity_R		0.57
gMVP		0.93
Mutation Taster		=9/91	disease causing

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: rs1616940; hg19: chr16-2164844;