rs78509585

chr16-2110865-G-Achr16-2110865-G-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_001009944.3(PKD1):c.4302C>T(p.Ile1434=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00171 in 1,611,846 control chromosomes in the GnomAD database, including 42 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0091 (25 hom., cov: 33)
  • Exomes 𝑓: 0.00094 (17 hom.)
• Consequence: PKD1 NM_001009944.3 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: -0.152

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]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).
• BP6: Variant 16-2110865-G-A is Benign according to our data. Variant chr16-2110865-G-A is described in ClinVar as [Benign]. Clinvar id is 256965.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr16-2110865-G-A is described in Lovd as [Likely_benign].
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00914 (1393/152356) while in subpopulation AFR AF= 0.0318 (1323/41586). AF 95% confidence interval is 0.0304. There are 25 homozygotes in gnomad4. There are 680 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High AC in GnomAd at 1395 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PKD1	NM_001009944.3	c.4302C>T	p.Ile1434=	synonymous_variant	15/46	ENST00000262304.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PKD1	ENST00000262304.9	c.4302C>T	p.Ile1434=	synonymous_variant	15/46	1	NM_001009944.3	P5

Frequencies

GnomAD3 genomes AF: 0.00916 AC: 1395 AN: 152238 Hom.: 25 Cov.: 33

Gnomad AFR AF: 0.0320

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00249

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000162

Gnomad OTH AF: 0.00956

GnomAD3 exomes AF: 0.00255 AC: 635 AN: 249338 Hom.: 13 AF XY: 0.00187 AC XY: 253 AN XY: 135432

Gnomad AFR exome AF: 0.0361

Gnomad AMR exome AF: 0.00113

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000107

Gnomad OTH exome AF: 0.000821

GnomAD4 exome AF: 0.000936 AC: 1366 AN: 1459490 Hom.: 17 Cov.: 36 AF XY: 0.000837 AC XY: 608 AN XY: 726032

Gnomad4 AFR exome AF: 0.0337

Gnomad4 AMR exome AF: 0.00161

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000928

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000540

Gnomad4 OTH exome AF: 0.00156

GnomAD4 genome AF: 0.00914 AC: 1393 AN: 152356 Hom.: 25 Cov.: 33 AF XY: 0.00913 AC XY: 680 AN XY: 74494

Gnomad4 AFR AF: 0.0318

Gnomad4 AMR AF: 0.00248

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000162

Gnomad4 OTH AF: 0.00946

Alfa AF: 0.00397 Hom.: 8

Bravo AF: 0.0103

Asia WGS AF: 0.000866 AC: 3 AN: 3478

EpiCase AF: 0.00

EpiControl AF: 0.000178

ClinVar

Significance: Benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:2

Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Aug 18, 2020	- -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -

Polycystic kidney disease, adult type Benign:1

Benign, criteria provided, single submitter

clinical testing

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Nov 02, 2019

- -

Polycystic kidney disease Benign:1

Benign, no assertion criteria provided

clinical testing

Department of Pathology and Laboratory Medicine, Sinai Health System

-

- -

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Oct 29, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
Cadd	Benign	0.85
Dann	Benign	0.72

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

Publications

LitVar

Other links and lift over

dbSNP: rs78509585; hg19: chr16-2160866;