chr4-169406685-G-A

Position:

• chr4-169406685-G-A

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_Strong BP6_Very_Strong BP7 BS2

The NM_001199397.3(NEK1):​c.3285C>T​(p.Pro1095=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000634 in 1,609,494 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 Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0030 (1 hom., cov: 31)
  • Exomes 𝑓: 0.00039 (2 hom.)
• Consequence: NEK1 NM_001199397.3 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:6
• Conservation: PhyloP100: 1.53

Genes affected

NEK1 (HGNC:7744): (NIMA related kinase 1) The protein encoded by this gene is a serine/threonine kinase involved in cell cycle regulation. The encoded protein is found in a centrosomal complex with FEZ1, a neuronal protein that plays a role in axonal development. Defects in this gene are a cause of polycystic kidney disease (PKD). Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2010]

ACMG classification

Verdict is Benign. Variant got -17 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.55).
• BP6: Variant 4-169406685-G-A is Benign according to our data. Variant chr4-169406685-G-A is described in ClinVar as [Benign]. Clinvar id is 457136.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=1.53 with no splicing effect.
• BS2: High Homozygotes in GnomAdExome4 at 2 AR,Digenic gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NEK1	NM_001199397.3	c.3285C>T	p.Pro1095=	synonymous_variant	32/36	ENST00000507142.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NEK1	ENST00000507142.6	c.3285C>T	p.Pro1095=	synonymous_variant	32/36	1	NM_001199397.3	A2

Frequencies

GnomAD3 genomes AF: 0.00294 AC: 446 AN: 151922 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0100

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00105

Gnomad ASJ AF: 0.000289

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.000103

Gnomad OTH AF: 0.00287

GnomAD3 exomes AF: 0.00105 AC: 259 AN: 246800 Hom.: 2 AF XY: 0.000821 AC XY: 110 AN XY: 133904

Gnomad AFR exome AF: 0.0110

Gnomad AMR exome AF: 0.00190

Gnomad ASJ exome AF: 0.000498

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000332

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000116

Gnomad OTH exome AF: 0.00118

GnomAD4 exome AF: 0.000391 AC: 570 AN: 1457454 Hom.: 2 Cov.: 28 AF XY: 0.000352 AC XY: 255 AN XY: 725052

Gnomad4 AFR exome AF: 0.00976

Gnomad4 AMR exome AF: 0.00183

Gnomad4 ASJ exome AF: 0.000422

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000468

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000586

Gnomad4 OTH exome AF: 0.00131

GnomAD4 genome AF: 0.00296 AC: 450 AN: 152040 Hom.: 1 Cov.: 31 AF XY: 0.00279 AC XY: 207 AN XY: 74294

Gnomad4 AFR AF: 0.0101

Gnomad4 AMR AF: 0.00105

Gnomad4 ASJ AF: 0.000289

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000103

Gnomad4 OTH AF: 0.00284

Alfa AF: 0.00145 Hom.: 0

Bravo AF: 0.00326

Asia WGS AF: 0.000577 AC: 2 AN: 3478

EpiCase AF: 0.000165

EpiControl AF: 0.000299

ClinVar

Significance: Benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Dec 28, 2017	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Oct 30, 2018	- -

Short-rib thoracic dysplasia 6 with or without polydactyly Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 25, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

NEK1-related disorder Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Apr 01, 2019

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	-0.55
CADD	Benign	1.2
DANN	Benign	0.39

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs140408058; hg19: chr4-170327836;