chr10-60071997-C-A

Variant names:

• chr10-60071997-C-A
• rs145256821
• NM_020987.5:c.8884G>T

Variant summary

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

The NM_020987.5(ANK3):​c.8884G>T​(p.Val2962Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 14/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V2962I) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ANK3 NM_020987.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.40
• Publications: 1 publications found

Genes affected

ANK3 (HGNC:494): (ankyrin 3) Ankyrins are a family of proteins that are believed to link the integral membrane proteins to the underlying spectrin-actin cytoskeleton and play key roles in activities such as cell motility, activation, proliferation, contact, and the maintenance of specialized membrane domains. Multiple isoforms of ankyrin with different affinities for various target proteins are expressed in a tissue-specific, developmentally regulated manner. Most ankyrins are typically composed of three structural domains: an amino-terminal domain containing multiple ankyrin repeats; a central region with a highly conserved spectrin binding domain; and a carboxy-terminal regulatory domain which is the least conserved and subject to variation. Ankyrin 3 is an immunologically distinct gene product from ankyrins 1 and 2, and was originally found at the axonal initial segment and nodes of Ranvier of neurons in the central and peripheral nervous systems. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Feb 2011]

ANK3 Gene-Disease associations (from GenCC):

• intellectual disability-hypotonia-spasticity-sleep disorder syndrome

  Inheritance: AR Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics
• intellectual disability

  Inheritance: AR, AD Classification: MODERATE, LIMITED Submitted by: ClinGen, Ambry Genetics
• Tourette syndrome

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ENSG00000232682 (HGNC:):

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_020987.5. 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
	ANK3	NM_020987.5	MANE Select	c.8884G>T	p.Val2962Phe	missense	Exon 37 of 44	NP_066267.2
	ANK3	NM_001204404.2		c.4409-3988G>T		intron	N/A	NP_001191333.1
	ANK3	NM_001320874.2		c.4406-3988G>T		intron	N/A	NP_001307803.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ANK3	ENST00000280772.7	TSL:1 MANE Select	c.8884G>T	p.Val2962Phe	missense	Exon 37 of 44	ENSP00000280772.1
	ANK3	ENST00000373827.6	TSL:1	c.4388-3988G>T		intron	N/A	ENSP00000362933.2
	ANK3	ENST00000355288.6	TSL:1	c.1808-3988G>T		intron	N/A	ENSP00000347436.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 36

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.22
BayesDel_addAF	Benign	-0.050	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	16
DANN	Uncertain	0.99
DEOGEN2	Benign	0.34	T
Eigen	Benign	-0.14
Eigen_PC	Benign	-0.11
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.91	D
M_CAP	Benign	0.056	D
MetaRNN	Uncertain	0.60	D
MetaSVM	Benign	-0.71	T
MutationAssessor	Uncertain	2.1	M
PhyloP100		3.4
PrimateAI	Benign	0.27	T
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.16
Sift	Uncertain	0.0010	D
Polyphen		0.89	P
Vest4		0.54
MutPred		0.26		Loss of sheet (P = 0.0315)
MVP		0.55
MPC		0.25
ClinPred		0.90	D
GERP RS		3.6
Varity_R		0.15
gMVP		0.30
Mutation Taster		=74/26	polymorphism

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: rs145256821; hg19: chr10-61831755;