16-2106111-G-A

Position:

• chr16-2106111-G-A

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Very_Strong BP7 BS2_Supporting

The NM_001009944.3(PKD1):​c.7683C>T​(p.Ala2561=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000264 in 1,604,778 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00019 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00027 (3 hom.)
• Consequence: PKD1 NM_001009944.3 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -3.12

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 -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BP6: Variant 16-2106111-G-A is Benign according to our data. Variant chr16-2106111-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 257003.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr16-2106111-G-A is described in Lovd as [Likely_benign].
• BP7: Synonymous conserved (PhyloP=-3.12 with no splicing effect.
• BS2: High AC in GnomAd4 at 29 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PKD1	NM_001009944.3	c.7683C>T	p.Ala2561=	synonymous_variant	19/46	ENST00000262304.9	NP_001009944.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PKD1	ENST00000262304.9	c.7683C>T	p.Ala2561=	synonymous_variant	19/46	1	NM_001009944.3	ENSP00000262304	P5

Frequencies

GnomAD3 genomes AF: 0.000191 AC: 29 AN: 152142 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000966

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000262

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000771

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000176

Gnomad OTH AF: 0.00144

GnomAD3 exomes AF: 0.000464 AC: 87 AN: 187432 Hom.: 0 AF XY: 0.000464 AC XY: 48 AN XY: 103422

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000496

Gnomad ASJ exome AF: 0.000113

Gnomad EAS exome AF: 0.00158

Gnomad SAS exome AF: 0.00101

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000267

Gnomad OTH exome AF: 0.000404

GnomAD4 exome AF: 0.000272 AC: 395 AN: 1452518 Hom.: 3 Cov.: 33 AF XY: 0.000296 AC XY: 214 AN XY: 722594

Gnomad4 AFR exome AF: 0.000151

Gnomad4 AMR exome AF: 0.000498

Gnomad4 ASJ exome AF: 0.0000768

Gnomad4 EAS exome AF: 0.000758

Gnomad4 SAS exome AF: 0.000967

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000193

Gnomad4 OTH exome AF: 0.000451

GnomAD4 genome AF: 0.000190 AC: 29 AN: 152260 Hom.: 0 Cov.: 32 AF XY: 0.000188 AC XY: 14 AN XY: 74448

Gnomad4 AFR AF: 0.0000963

Gnomad4 AMR AF: 0.000261

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000773

Gnomad4 SAS AF: 0.000414

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000176

Gnomad4 OTH AF: 0.00142

Alfa AF: 0.000695 Hom.: 0

Bravo AF: 0.000238

ClinVar

Significance: Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

-

- -

Polycystic kidney disease, adult type Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Aug 17, 2021

- -

not provided Benign:1

Likely benign, criteria provided, single submitter

not provided

Breakthrough Genomics, Breakthrough Genomics

-

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	0.42
DANN	Benign	0.73

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs530703053; hg19: chr16-2156112;