chr5-62361328-C-T

Variant names:

• chr5-62361328-C-T
• rs1554042050
• NM_001098511.3:c.959C>T

Variant summary

Our verdict is Pathogenic. The variant received 14 ACMG points: 14P and 0B. PM2 PP3_Strong PP5_Very_Strong

The NM_001098511.3(KIF2A):​c.959C>T​(p.Thr320Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 14/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: KIF2A NM_001098511.3 missense
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:3
• Conservation: PhyloP100: 7.91
• Publications: 1 publications found

Genes affected

KIF2A (HGNC:6318): (kinesin family member 2A) The protein encoded by this gene is a plus end-directed motor required for normal mitotic progression. The encoded protein is required for normal spindle activity during mitosis and is necessary for normal brain development. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2011]

ENSG00000288643 (HGNC:):

DIMT1 (HGNC:30217): (DIM1 rRNA methyltransferase and ribosome maturation factor) The protein encoded by this gene is a methyltransferase that is responsible for dimethylation of adjacent adenosines near the 18S rRNA decoding site. The encoded protein is essential for ribosome biogenesis, although its catalytic activity is not involved in the process. The yeast ortholog of this protein functions in the cytoplasm while this protein functions in the nucleus. [provided by RefSeq, Jan 2017]

ACMG classification

Our verdict: Pathogenic. The variant received 14 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.97
• PP5: Variant 5-62361328-C-T is Pathogenic according to our data. Variant chr5-62361328-C-T is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 435642.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KIF2A	NM_001098511.3	c.959C>T	p.Thr320Ile	missense_variant	Exon 10 of 21	ENST00000407818.8	NP_001091981.1
KIF2A	NM_004520.5	c.959C>T	p.Thr320Ile	missense_variant	Exon 10 of 20		NP_004511.2
KIF2A	NM_001243953.2	c.902C>T	p.Thr301Ile	missense_variant	Exon 10 of 20		NP_001230882.1
KIF2A	NM_001243952.2	c.878C>T	p.Thr293Ile	missense_variant	Exon 11 of 21		NP_001230881.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KIF2A	ENST00000407818.8	c.959C>T	p.Thr320Ile	missense_variant	Exon 10 of 21	1	NM_001098511.3	ENSP00000385000.3
ENSG00000288643	ENST00000509663.2	n.64+54792C>T		intron_variant	Intron 1 of 5	3		ENSP00000502199.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 27

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Complex cortical dysplasia with other brain malformations 3 Pathogenic:3

Jan 24, 2022

Revvity Omics, Revvity

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

May 03, 2019

Institute of Human Genetics Munich, TUM University Hospital

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Dec 31, 2015

Genetic Services Laboratory, University of Chicago

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.33	D
BayesDel_noAF	Pathogenic	0.24
CADD	Pathogenic	31
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.80	D;.;.;.;T
Eigen	Pathogenic	1.1
Eigen_PC	Pathogenic	0.97
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.98	D;D;D;D;T
M_CAP	Pathogenic	0.36	D
MetaRNN	Pathogenic	0.97	D;D;D;D;D
MetaSVM	Uncertain	0.45	D
MutationAssessor	Pathogenic	5.1	H;.;H;.;.
PhyloP100		7.9
PrimateAI	Pathogenic	0.91	D
PROVEAN	Pathogenic	-5.7	D;D;D;D;N
REVEL	Pathogenic	0.65
Sift	Pathogenic	0.0	D;D;D;D;D
Sift4G	Pathogenic	0.0010	D;D;D;D;T
Polyphen		0.99	D;.;D;.;.
Vest4		0.94
MutPred		0.93		Loss of disorder (P = 0.0572);.;Loss of disorder (P = 0.0572);.;.;
MVP		0.80
MPC		1.9
ClinPred		1.0	D
GERP RS		5.2
PromoterAI		-0.0077	Neutral
Varity_R		0.96
gMVP		0.95
Mutation Taster		=0/100	disease causing (ClinVar)

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: rs1554042050; hg19: chr5-61657155;