Genetic Variant NM_001199397.3:c.1122A>G (chr4-169561850-T-C) – ACMG Classification: Benign (-7 pts)

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_StrongBP6_ModerateBP7

The NM_001199397.3(NEK1):c.1122A>G(p.Glu374Glu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,458,374 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 (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

NEK1
NM_001199397.3 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.786

Publications

1 publications found

Variant links:

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]

NEK1 Gene-Disease associations (from GenCC):

amyotrophic lateral sclerosis, susceptibility to, 24
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, ClinGen
short-rib thoracic dysplasia 6 with or without polydactyly
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
orofaciodigital syndrome type II
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
short rib-polydactyly syndrome, Majewski type
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

NEK1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.52).

BP6

Variant 4-169561850-T-C is Benign according to our data. Variant chr4-169561850-T-C is described in ClinVar as Likely_benign. ClinVar VariationId is 2655182.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=0.786 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NEK1	NM_001199397.3 link	c.1122A>G	p.Glu374Glu	synonymous_variant	Exon 14 of 36	ENST00000507142.6	NP_001186326.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NEK1	ENST00000507142.6 link	c.1122A>G	p.Glu374Glu	synonymous_variant	Exon 14 of 36	1	NM_001199397.3	ENSP00000424757.2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000411

AC:

AN:

1458374

Hom.:

Cov.:

AF XY:

0.00000552

AC XY:

AN XY:

725204

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33330

American (AMR)

AF:

0.00

AC:

AN:

44430

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26040

East Asian (EAS)

AF:

0.00

AC:

AN:

39548

South Asian (SAS)

AF:

0.00

AC:

AN:

84922

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53324

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5748

European-Non Finnish (NFE)

AF:

0.00000360

AC:

AN:

1110802

Other (OTH)

AF:

0.0000332

AC:

AN:

60230

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000000614416), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.333

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Benign:1

May 01, 2022

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

NEK1: PM2:Supporting, BP4, BP7

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.52

CADD

Benign

7.6

(source)

DANN

Benign

0.53

PhyloP100

0.79

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over