4-169507051-CTT-C

Variant names:

• chr4-169507051-CTT-C
• rs775849720
• NM_001199397.3:c.1991_1992delAA

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1 PM2

The NM_001199397.3(NEK1):​c.1991_1992delAA​(p.Lys664SerfsTer9) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 31)
• Consequence: NEK1 NM_001199397.3 frameshift
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.57
• Publications: 5 publications found

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

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001199397.3. 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
	NEK1	NM_001199397.3	MANE Select	c.1991_1992delAA	p.Lys664SerfsTer9	frameshift	Exon 23 of 36	NP_001186326.1
	NEK1	NM_001374418.1		c.1991_1992delAA	p.Lys664SerfsTer9	frameshift	Exon 22 of 35	NP_001361347.1
	NEK1	NM_001374419.1		c.1907_1908delAA	p.Lys636SerfsTer9	frameshift	Exon 22 of 35	NP_001361348.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NEK1	ENST00000507142.6	TSL:1 MANE Select	c.1991_1992delAA	p.Lys664SerfsTer9	frameshift	Exon 23 of 36	ENSP00000424757.2
	NEK1	ENST00000439128.6	TSL:1	c.1907_1908delAA	p.Lys636SerfsTer9	frameshift	Exon 21 of 34	ENSP00000408020.2
	NEK1	ENST00000511633.5	TSL:1	c.1859_1860delAA	p.Lys620SerfsTer9	frameshift	Exon 22 of 35	ENSP00000423332.1

Frequencies

GnomAD3 genomes Cov.: 31

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		2.6

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: rs775849720; hg19: chr4-170428202;