rs768793261

Variant names:

• chr16-27573921-G-A
• rs768793261
• NM_015202.5:c.28G>A

Your query was ambiguous. Multiple possible variants found:

• chr16-27573921-G-A
• chr16-27573921-G-T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_015202.5(KATNIP):​c.28G>A​(p.Glu10Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000684 in 1,461,848 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000068 (0 hom.)
• Consequence: KATNIP NM_015202.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.18
• Publications: 2 publications found

Genes affected

KATNIP (HGNC:29068): (katanin interacting protein) This gene encodes a novel, evolutionarily conserved, ciliary protein. In human hTERT-RPE1 cells, the protein is found at the base of cilia, decorating the ciliary axoneme, and enriched at the ciliary tip. The protein binds to microtubules in vitro and regulates their stability when it is overexpressed. A null mutation in this gene has been associated with Joubert syndrome, a recessive disorder that is characterized by a distinctive mid-hindbrain and cerebellar malformation and is also often associated with wider ciliopathy symptoms. Consistently, in a serum-starvation ciliogenesis assay, human fibroblast cells derived from patients with the mutation display a reduced number of ciliated cells with abnormally long cilia. [provided by RefSeq, Feb 2016]

KATNIP Gene-Disease associations (from GenCC):

• ciliopathy

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• Joubert syndrome 26

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• Joubert syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1768882).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015202.5. 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
	KATNIP	NM_015202.5	MANE Select	c.28G>A	p.Glu10Lys	missense	Exon 2 of 28	NP_056017.4	O60303

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KATNIP	ENST00000261588.10	TSL:1 MANE Select	c.28G>A	p.Glu10Lys	missense	Exon 2 of 28	ENSP00000261588.4	O60303
	KATNIP	ENST00000862512.1		c.28G>A	p.Glu10Lys	missense	Exon 2 of 27	ENSP00000532571.1
	KATNIP	ENST00000568258.5	TSL:3	c.13G>A	p.Glu5Lys	missense	Exon 1 of 7	ENSP00000454884.1	H3BNJ6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000239 AC: 6 AN: 251460 AF XY: 0.0000294

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000352

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000684 AC: 10 AN: 1461848 Hom.: 0 Cov.: 30 AF XY: 0.0000110 AC XY: 8 AN XY: 727228

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000464 AC: 4 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53398

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

European-Non Finnish (NFE) AF: 0.00000450 AC: 5 AN: 1111998

Other (OTH) AF: 0.0000166 AC: 1 AN: 60392

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ExAC AF: 0.0000412 AC: 5

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.45
CADD	Benign	18
DANN	Uncertain	1.0
DEOGEN2	Benign	0.00070	T
Eigen	Benign	-0.10
Eigen_PC	Benign	-0.040
FATHMM_MKL	Uncertain	0.79	D
LIST_S2	Benign	0.74	T
M_CAP	Benign	0.013	T
MetaRNN	Benign	0.18	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.29	N
PhyloP100		2.2
PrimateAI	Benign	0.43	T
PROVEAN	Benign	-0.28	N
REVEL	Benign	0.12
Sift	Benign	0.30	T
Sift4G	Benign	0.22	T
Polyphen		0.88	P
Vest4		0.32
MutPred		0.17		Gain of methylation at E10 (P = 0.016)
MVP		0.41
MPC		0.18
ClinPred		0.083	T
GERP RS		4.6
PromoterAI		-0.022	Neutral
Varity_R		0.045
gMVP		0.16
Mutation Taster		=92/8	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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: rs768793261; hg19: chr16-27585242;