chr9-83837155-T-A

Position:

• chr9-83837155-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_017576.4(KIF27):​c.4052A>T​(p.His1351Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,804 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 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: 6.8e-7 (0 hom.)
• Consequence: KIF27 NM_017576.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.848

Genes affected

KIF27 (HGNC:18632): (kinesin family member 27) This gene is a member of the KIF27 (kinesin 4) sub-family of the mammalian kinesin family. The gene is an ortholog of the Drosophila Cos2 gene, which plays an important role in the Hedgehog signaling pathway. The encoded protein contains an N-terminal motor domain which includes nucleotide-binding and microtubule-interacting regions, a stalk domain containing a predicted coiled coil motif and a C-terminal tail domain. Alternatively spliced transcript variants have been observed for this gene. Pseudogenes associated with this gene are located on chromosome 9. [provided by RefSeq, Dec 2012]

LOC101927552 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.12388024).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KIF27	NM_017576.4	c.4052A>T	p.His1351Leu	missense_variant	18/18	ENST00000297814.7
LOC101927552	XR_001746793.2	n.2518T>A		non_coding_transcript_exon_variant	6/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KIF27	ENST00000297814.7	c.4052A>T	p.His1351Leu	missense_variant	18/18	1	NM_017576.4	P1
	ENST00000591217.5	n.296+12T>A		intron_variant, non_coding_transcript_variant		5
	ENST00000650551.1	n.815+12T>A		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461804 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727210

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 19, 2023

The c.4052A>T (p.H1351L) alteration is located in exon 18 (coding exon 17) of the KIF27 gene. This alteration results from a A to T substitution at nucleotide position 4052, causing the histidine (H) at amino acid position 1351 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.084
BayesDel_addAF	Benign	-0.10	T
BayesDel_noAF	Benign	-0.39
CADD	Benign	17
DANN	Benign	0.85
DEOGEN2	Benign	0.0087	T;.;.
Eigen	Benign	-0.72
Eigen_PC	Benign	-0.69
FATHMM_MKL	Benign	0.58	D
LIST_S2	Benign	0.73	T;T;T
M_CAP	Benign	0.030	D
MetaRNN	Benign	0.12	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.9	L;.;.
MutationTaster	Benign	0.99	N;N;N
PrimateAI	Benign	0.43	T
PROVEAN	Benign	-2.0	N;N;N
REVEL	Benign	0.070
Sift	Benign	0.064	T;D;D
Sift4G	Benign	0.38	T;T;T
Polyphen		0.0010	B;B;B
Vest4		0.16
MutPred		0.45		Loss of catalytic residue at G1352 (P = 0.0359);.;.;
MVP		0.54
MPC		1.7
ClinPred		0.15	T
GERP RS		2.5
Varity_R		0.10
gMVP		0.45

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

LitVar

Other links and lift over

dbSNP: rs904928731; hg19: chr9-86452070;