chr4-169394536-GA-G

Variant names:

• chr4-169394536-GA-G
• rs1171520560
• NM_001199397.3:c.3848-14delT

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001199397.3(NEK1):​c.3848-14delT variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000409 in 1,222,370 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: NEK1 NM_001199397.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.68
• Publications: 0 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: ClinGen, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• 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: Uncertain_significance. The variant received 2 ACMG points.

• 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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NEK1	NM_001199397.3	MANE Select	c.3848-14delT		intron	N/A	NP_001186326.1	Q96PY6-3
	NEK1	NM_001374418.1		c.3848-14delT		intron	N/A	NP_001361347.1	Q96PY6-3
	NEK1	NM_001374419.1		c.3764-14delT		intron	N/A	NP_001361348.1	Q96PY6-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NEK1	ENST00000507142.6	TSL:1 MANE Select	c.3848-14delT		intron	N/A	ENSP00000424757.2	Q96PY6-3
	NEK1	ENST00000439128.6	TSL:1	c.3764-14delT		intron	N/A	ENSP00000408020.2	Q96PY6-1
	NEK1	ENST00000511633.5	TSL:1	c.3716-14delT		intron	N/A	ENSP00000423332.1	Q96PY6-6

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000409 AC: 5 AN: 1222370 Hom.: 0 Cov.: 20 AF XY: 0.00000488 AC XY: 3 AN XY: 614258

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

African (AFR) AF: 0.00 AC: 0 AN: 25440

American (AMR) AF: 0.00 AC: 0 AN: 27688

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 23052

East Asian (EAS) AF: 0.00 AC: 0 AN: 35442

South Asian (SAS) AF: 0.00 AC: 0 AN: 68678

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52210

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5244

European-Non Finnish (NFE) AF: 0.00000429 AC: 4 AN: 933032

Other (OTH) AF: 0.0000194 AC: 1 AN: 51584

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000540 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		1.7

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.11		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: rs1171520560; hg19: chr4-170315687;