chr13-70107605-G-A

Variant names:

• chr13-70107605-G-A
• rs753459470
• NM_020866.3:c.95C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_020866.3(KLHL1):​c.95C>T​(p.Pro32Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000188 in 1,594,024 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000020 (0 hom.)
• Consequence: KLHL1 NM_020866.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.34
• Publications: 2 publications found

Genes affected

KLHL1 (HGNC:6352): (kelch like family member 1) The KLHL1 protein belongs to a family of actin-organizing proteins related to Drosophila Kelch (Nemes et al., 2000 [PubMed 10888605]).[supplied by OMIM, Feb 2010]

ATXN8OS (HGNC:10561): (ATXN8 opposite strand lncRNA) This gene is an antisense transcript to the KLHL1 gene (homolog to the Drosophila KELCH gene); it does not itself appear to be protein coding. A TAC/TGC trinucleotide repeat expansion that is incorporated into this gene transcript, but not the KLHL1 transcript, causes spinocerebellar ataxia type 8. Presumably the expansion interferes with normal antisense function of this transcript. [provided by RefSeq, Oct 2008]

ATXN8OS Gene-Disease associations (from GenCC):

• spinocerebellar ataxia type 8

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.22144738).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020866.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KLHL1	NM_020866.3	MANE Select	c.95C>T	p.Pro32Leu	missense	Exon 1 of 11	NP_065917.1	Q9NR64
	KLHL1	NM_001286725.2		c.95C>T	p.Pro32Leu	missense	Exon 1 of 10	NP_001273654.1	F5H1J3
	ATXN8OS	NR_002717.3		n.185G>A		non_coding_transcript_exon	Exon 1 of 5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KLHL1	ENST00000377844.9	TSL:1 MANE Select	c.95C>T	p.Pro32Leu	missense	Exon 1 of 11	ENSP00000367075.4	Q9NR64
	KLHL1	ENST00000545028.2	TSL:2	c.95C>T	p.Pro32Leu	missense	Exon 1 of 10	ENSP00000439602.2	F5H1J3
	ATXN8OS	ENST00000414504.6	TSL:5	n.393G>A		non_coding_transcript_exon	Exon 1 of 5

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152210 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000177 AC: 4 AN: 226084 AF XY: 0.00000816

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000394

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000201 AC: 29 AN: 1441814 Hom.: 0 Cov.: 33 AF XY: 0.0000154 AC XY: 11 AN XY: 715828

African (AFR) AF: 0.00 AC: 0 AN: 32916

American (AMR) AF: 0.00 AC: 0 AN: 42306

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24224

East Asian (EAS) AF: 0.00 AC: 0 AN: 39620

South Asian (SAS) AF: 0.00 AC: 0 AN: 82800

European-Finnish (FIN) AF: 0.0000572 AC: 3 AN: 52450

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5582

European-Non Finnish (NFE) AF: 0.0000218 AC: 24 AN: 1102490

Other (OTH) AF: 0.0000337 AC: 2 AN: 59426

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152210 Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1 AN XY: 74372

African (AFR) AF: 0.00 AC: 0 AN: 41470

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5178

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10626

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68030

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.0000370 Hom.: 0

Bravo AF: 0.00000756

ExAC AF: 0.0000247 AC: 3

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

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

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.071
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.40
CADD	Benign	15
DANN	Uncertain	1.0
DEOGEN2	Benign	0.10	T
Eigen	Benign	-0.14
Eigen_PC	Benign	-0.072
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Benign	0.69	T
M_CAP	Benign	0.055	D
MetaRNN	Benign	0.22	T
MetaSVM	Benign	-0.85	T
MutationAssessor	Benign	1.2	L
PhyloP100		2.3
PrimateAI	Benign	0.45	T
PROVEAN	Benign	-0.48	N
REVEL	Benign	0.12
Sift	Benign	0.14	T
Sift4G	Uncertain	0.043	D
Polyphen		0.76	P
Vest4		0.19
MutPred		0.25		Gain of catalytic residue at A33 (P = 0)
MVP		0.84
MPC		0.061
ClinPred		0.16	T
GERP RS		3.6
Varity_R		0.044
gMVP		0.29
Mutation Taster		=93/7	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: rs753459470; hg19: chr13-70681737;