12-57550320-C-T

Position:

• chr12-57550320-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2 PP2 PP3_Strong

The NM_004984.4(KIF5A):​c.49C>T​(p.Arg17Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: KIF5A NM_004984.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.34

Genes affected

KIF5A (HGNC:6323): (kinesin family member 5A) This gene encodes a member of the kinesin family of proteins. Members of this family are part of a multisubunit complex that functions as a microtubule motor in intracellular organelle transport. Mutations in this gene cause autosomal dominant spastic paraplegia 10. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), KIF5A. . Gene score misZ 3.5984 (greater than the threshold 3.09). Trascript score misZ 5.0239 (greater than threshold 3.09). GenCC has associacion of gene with amyotrophic lateral sclerosis, susceptibility to, 25, inherited neurodegenerative disorder, hereditary spastic paraplegia 10, myoclonus, intractable, neonatal, autosomal dominant Charcot-Marie-Tooth disease type 2 due to KIF5A mutation.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.962

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KIF5A	NM_004984.4	c.49C>T	p.Arg17Trp	missense_variant	1/29	ENST00000455537.7	NP_004975.2
KIF5A	NM_001354705.2	c.49C>T	p.Arg17Trp	missense_variant	1/26		NP_001341634.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KIF5A	ENST00000455537.7	c.49C>T	p.Arg17Trp	missense_variant	1/29	1	NM_004984.4	ENSP00000408979	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Feb 05, 2020

Not observed in large population cohorts (Lek et al., 2016); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.31	D
BayesDel_noAF	Pathogenic	0.21
CADD	Pathogenic	33
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.90	D;.
Eigen	Pathogenic	0.81
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Uncertain	0.79	D
LIST_S2	Pathogenic	1.0	D;D
M_CAP	Pathogenic	0.49	D
MetaRNN	Pathogenic	0.96	D;D
MetaSVM	Uncertain	0.50	D
MutationAssessor	Pathogenic	4.6	H;.
MutationTaster	Benign	1.0	D;N
PrimateAI	Pathogenic	0.79	T
PROVEAN	Pathogenic	-6.1	D;D
REVEL	Pathogenic	0.77
Sift	Pathogenic	0.0	D;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;.
Vest4		0.88
MutPred		0.83		Gain of catalytic residue at N20 (P = 0.0391);Gain of catalytic residue at N20 (P = 0.0391);
MVP		0.84
MPC		2.6
ClinPred		1.0	D
GERP RS		3.6
Varity_R		0.77
gMVP		0.98

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr12-57944103;