NM_016401.4:c.31-1G>T

Variant names:

• chr11-86306244-G-T
• rs1057520064
• NM_016401.4:c.31-1G>T

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_016401.4(HIKESHI):​c.31-1G>T variant causes a splice acceptor, intron 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. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: HIKESHI NM_016401.4 splice_acceptor, intron
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 9.15
• Publications: 1 publications found

Genes affected

HIKESHI (HGNC:26938): (heat shock protein nuclear import factor hikeshi) This gene encodes an evolutionarily conserved nuclear transport receptor that mediates heat-shock-induced nuclear import of 70 kDa heat-shock proteins (Hsp70s) through interactions with FG-nucleoporins. The protein mediates transport of the ATP form but not the ADP form of Hsp70 proteins under conditions of heat shock stress. Structural analyses demonstrate that the protein forms an asymmetric homodimer and that the N-terminal domain consists of a jelly-roll/beta-sandwich fold structure that contains hydrophobic pockets involved in FG-nucleoporin recognition. Reduction of RNA expression levels in HeLa cells using small interfering RNAs results in inhibition of heat shock-induced nuclear accumulation of Hsp70s, indicating a role for this gene in regulation of Hsp70 nuclear import during heat shock stress. [provided by RefSeq, Apr 2016]

HIKESHI Gene-Disease associations (from GenCC):

• hypomyelinating leukodystrophy 13

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• c11orf73-related autosomal recessive hypomyelinating leukodystrophy

  Inheritance: AR Classification: MODERATE Submitted by: Illumina

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, LoF is a know mechanism of disease, Cryptic splice site detected, with MaxEntScore 6.8, offset of 10, new splice context is: tattttctatgtgcaaacAGctg. Cryptic site results in frameshift change. If cryptic site found is not functional and variant results in exon loss, it results in frameshift change.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 11-86306244-G-T is Pathogenic according to our data. Variant chr11-86306244-G-T is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 376818.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016401.4. 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
	HIKESHI	NM_016401.4	MANE Select	c.31-1G>T		splice_acceptor intron	N/A	NP_057485.2
	HIKESHI	NM_001322404.2		c.31-1G>T		splice_acceptor intron	N/A	NP_001309333.1
	HIKESHI	NM_001322407.2		c.-87-1G>T		splice_acceptor intron	N/A	NP_001309336.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HIKESHI	ENST00000278483.8	TSL:1 MANE Select	c.31-1G>T		splice_acceptor intron	N/A	ENSP00000278483.3
	HIKESHI	ENST00000533986.5	TSL:1	c.31-1G>T		splice_acceptor intron	N/A	ENSP00000432699.1
	HIKESHI	ENST00000528004.5	TSL:2	n.31-1G>T		splice_acceptor intron	N/A	ENSP00000433815.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Likely pathogenic

Revision: criteria provided, single submitter

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

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.37
CADD	Pathogenic	33
DANN	Uncertain	1.0
Eigen	Pathogenic	1.3
Eigen_PC	Pathogenic	1.1
FATHMM_MKL	Pathogenic	1.0	D
PhyloP100		9.1
GERP RS		5.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Mutation Taster		=1/99	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.94
SpliceAI score (max)		1.0		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.84		Position offset: 11
DS_AL_spliceai		1.0		Position offset: 1

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1057520064; hg19: chr11-86017286;