chr16-2090224-C-T

Variant names:

• chr16-2090224-C-T
• rs368570774
• NM_001009944.3:c.12445-30G>A

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_Strong BP6

The NM_001009944.3(PKD1):​c.12445-30G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000028 in 1,608,750 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (no stars).

• Frequency:
  • Genomes: 𝑓 0.000026 (0 hom., cov: 34)
  • Exomes 𝑓: 0.000028 (0 hom.)
• Consequence: PKD1 NM_001009944.3 intron
• Clinical Significance: Likely benign no assertion criteria provided B:1
• Conservation: PhyloP100: 1.99
• 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]

MIR1225 (HGNC:33931): (microRNA 1225) microRNAs (miRNAs) are short (20-24 nt) non-coding RNAs that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nt stem-loop precursor miRNA (pre-miRNA), which is further cleaved by the cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA. The RefSeq represents the predicted microRNA stem-loop. [provided by RefSeq, Sep 2009]

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).
• BP6: Variant 16-2090224-C-T is Benign according to our data. Variant chr16-2090224-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 3036006.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PKD1	NM_001009944.3	c.12445-30G>A		intron_variant	Intron 45 of 45	ENST00000262304.9	NP_001009944.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PKD1	ENST00000262304.9	c.12445-30G>A		intron_variant	Intron 45 of 45	1	NM_001009944.3	ENSP00000262304.4
PKD1	ENST00000423118.5	c.12442-30G>A		intron_variant	Intron 45 of 45	1		ENSP00000399501.1
MIR1225	ENST00000408729.1	n.61G>A		non_coding_transcript_exon_variant	Exon 1 of 1	6
PKD1	ENST00000472577.1	n.473-30G>A		intron_variant	Intron 2 of 2	2

Frequencies

GnomAD3 genomes AF: 0.0000263 AC: 4 AN: 152148 Hom.: 0 Cov.: 34

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000654

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000207 AC: 5 AN: 241076 AF XY: 0.0000152

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000293

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000373

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000281 AC: 41 AN: 1456602 Hom.: 0 Cov.: 34 AF XY: 0.0000276 AC XY: 20 AN XY: 724110

African (AFR) AF: 0.00 AC: 0 AN: 33398

American (AMR) AF: 0.0000225 AC: 1 AN: 44432

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25962

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39622

South Asian (SAS) AF: 0.00 AC: 0 AN: 85908

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51516

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.0000324 AC: 36 AN: 1109852

Other (OTH) AF: 0.0000499 AC: 3 AN: 60148

GnomAD4 genome AF: 0.0000263 AC: 4 AN: 152148 Hom.: 0 Cov.: 34 AF XY: 0.0000269 AC XY: 2 AN XY: 74324

African (AFR) AF: 0.0000241 AC: 1 AN: 41434

American (AMR) AF: 0.0000654 AC: 1 AN: 15286

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5182

South Asian (SAS) AF: 0.00 AC: 0 AN: 4836

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68000

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.0000283 Hom.: 0

Bravo AF: 0.0000264

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

Submissions by phenotype

PKD1-related disorder Benign:1

Feb 07, 2023

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
CADD	Benign	20
DANN	Benign	0.65
PhyloP100		2.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.3

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: rs368570774; hg19: chr16-2140225;