16-2102397-A-G

Variant names:

• chr16-2102397-A-G
• rs1057518856
• NM_001009944.3:c.9185T>C

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PM5 PP3

The NM_001009944.3(PKD1):​c.9185T>C​(p.Val3062Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000284 in 1,406,406 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V3062L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000028 (0 hom.)
• Consequence: PKD1 NM_001009944.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 8.88
• Publications: 0 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: ClinGen, Orphanet
• 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 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr16-2102397-A-T is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 374044.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.762

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PKD1	NM_001009944.3	MANE Select	c.9185T>C	p.Val3062Ala	missense	Exon 25 of 46	NP_001009944.3
	PKD1	NM_000296.4		c.9185T>C	p.Val3062Ala	missense	Exon 25 of 46	NP_000287.4

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PKD1	ENST00000262304.9	TSL:1 MANE Select	c.9185T>C	p.Val3062Ala	missense	Exon 25 of 46	ENSP00000262304.4
	PKD1	ENST00000423118.5	TSL:1	c.9185T>C	p.Val3062Ala	missense	Exon 25 of 46	ENSP00000399501.1
	PKD1	ENST00000480227.5	TSL:1	n.922T>C		non_coding_transcript_exon	Exon 3 of 8

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000284 AC: 4 AN: 1406406 Hom.: 0 Cov.: 34 AF XY: 0.00000144 AC XY: 1 AN XY: 694852

African (AFR) AF: 0.00 AC: 0 AN: 32016

American (AMR) AF: 0.00 AC: 0 AN: 36406

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25240

East Asian (EAS) AF: 0.00 AC: 0 AN: 36828

South Asian (SAS) AF: 0.00 AC: 0 AN: 80608

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 48730

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4074

European-Non Finnish (NFE) AF: 0.00000369 AC: 4 AN: 1084192

Other (OTH) AF: 0.00 AC: 0 AN: 58312

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.50
BayesDel_addAF	Benign	-0.045	T
BayesDel_noAF	Benign	-0.30
CADD	Benign	22
DANN	Benign	0.97
DEOGEN2	Uncertain	0.70	D
Eigen	Uncertain	0.23
Eigen_PC	Benign	0.12
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.75	T
M_CAP	Uncertain	0.14	D
MetaRNN	Pathogenic	0.76	D
MetaSVM	Benign	-0.89	T
MutationAssessor	Uncertain	2.6	M
PhyloP100		8.9
PrimateAI	Benign	0.41	T
PROVEAN	Uncertain	-3.0	D
REVEL	Uncertain	0.33
Sift	Uncertain	0.0030	D
Sift4G	Uncertain	0.0030	D
Polyphen		0.92	P
Vest4		0.52
MutPred		0.48		Gain of relative solvent accessibility (P = 0.0166)
MVP		0.83
ClinPred		0.95	D
GERP RS		4.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.17
gMVP		0.68
Mutation Taster		=37/63	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: rs1057518856; hg19: chr16-2152398;