chr16-2108622-T-A

Position:

• chr16-2108622-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The ENST00000262304.9(PKD1):​c.6545A>T​(p.Gln2182Leu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 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. Q2182R) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: PKD1 ENST00000262304.9 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.72

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 Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.9

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PKD1	NM_001009944.3	c.6545A>T	p.Gln2182Leu	missense_variant	15/46	ENST00000262304.9	NP_001009944.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PKD1	ENST00000262304.9	c.6545A>T	p.Gln2182Leu	missense_variant	15/46	1	NM_001009944.3	ENSP00000262304	P5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.21
BayesDel_addAF	Uncertain	0.033	T
BayesDel_noAF	Benign	-0.19
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.44	T;.
Eigen	Uncertain	0.49
Eigen_PC	Uncertain	0.47
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.67	T;T
M_CAP	Pathogenic	0.83	D
MetaRNN	Pathogenic	0.90	D;D
MetaSVM	Benign	-0.44	T
MutationAssessor	Uncertain	2.4	M;M
MutationTaster	Benign	0.97	D;D
PrimateAI	Uncertain	0.55	T
PROVEAN	Uncertain	-2.9	D;D
REVEL	Uncertain	0.56
Sift	Benign	0.10	T;T
Sift4G	Uncertain	0.0060	D;D
Polyphen		1.0	D;D
Vest4		0.70
MutPred		0.66		Loss of sheet (P = 0.0357);Loss of sheet (P = 0.0357);
MVP		0.91
ClinPred		0.97	D
GERP RS		4.4
Varity_R		0.21
gMVP		0.62

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: rs147685291; hg19: chr16-2158623;