6-16327684-ATGCTGCTGCTGCTGCTGCTGCTGCTGCTGC-ATGCTGCTGCTGCTGCTGCTGCTGCTGCTGCTGCTGCTGCTGCTGCTGCTGCTGCTGC

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_001128164.2(ATXN1):​c.600_626dupGCAGCAGCAGCAGCAGCAGCAGCAGCA​(p.Gln200_Gln208dup) variant causes a disruptive inframe insertion change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.00018 ( 1 hom., cov: 20)
Exomes 𝑓: 0.00017 ( 2 hom. )
Failed GnomAD Quality Control

Consequence

ATXN1
NM_001128164.2 disruptive_inframe_insertion

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.106
Variant links:
Genes affected
ATXN1 (HGNC:10548): (ataxin 1) The autosomal dominant cerebellar ataxias (ADCA) are a heterogeneous group of neurodegenerative disorders characterized by progressive degeneration of the cerebellum, brain stem and spinal cord. Clinically, ADCA has been divided into three groups: ADCA types I-III. ADCAI is genetically heterogeneous, with five genetic loci, designated spinocerebellar ataxia (SCA) 1, 2, 3, 4 and 6, being assigned to five different chromosomes. ADCAII, which always presents with retinal degeneration (SCA7), and ADCAIII often referred to as the `pure' cerebellar syndrome (SCA5), are most likely homogeneous disorders. Several SCA genes have been cloned and shown to contain CAG repeats in their coding regions. ADCA is caused by the expansion of the CAG repeats, producing an elongated polyglutamine tract in the corresponding protein. The expanded repeats are variable in size and unstable, usually increasing in size when transmitted to successive generations. The function of the ataxins is not known. This locus has been mapped to chromosome 6, and it has been determined that the diseased allele contains 40-83 CAG repeats, compared to 6-39 in the normal allele, and is associated with spinocerebellar ataxia type 1 (SCA1). Alternative splicing results in multiple transcript variants, with one variant encoding multiple distinct proteins, ATXN1 and Alt-ATXN1, due to the use of overlapping alternate reading frames. [provided by RefSeq, Nov 2017]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2
High AC in GnomAd4 at 24 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
ATXN1NM_001128164.2 linkc.600_626dupGCAGCAGCAGCAGCAGCAGCAGCAGCA p.Gln200_Gln208dup disruptive_inframe_insertion 7/8 ENST00000436367.6 NP_001121636.1 P54253-1Q96FF1
ATXN1NM_000332.4 linkc.600_626dupGCAGCAGCAGCAGCAGCAGCAGCAGCA p.Gln200_Gln208dup disruptive_inframe_insertion 8/9 NP_000323.2 P54253-1Q96FF1
ATXN1NM_001357857.2 linkc.*13_*39dupGCAGCAGCAGCAGCAGCAGCAGCAGCA 3_prime_UTR_variant 8/9 NP_001344786.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
ATXN1ENST00000436367.6 linkc.600_626dupGCAGCAGCAGCAGCAGCAGCAGCAGCA p.Gln200_Gln208dup disruptive_inframe_insertion 7/81 NM_001128164.2 ENSP00000416360.1 P54253-1
ATXN1ENST00000244769.8 linkc.600_626dupGCAGCAGCAGCAGCAGCAGCAGCAGCA p.Gln200_Gln208dup disruptive_inframe_insertion 8/91 ENSP00000244769.3 P54253-1
ATXN1ENST00000642969.1 linkc.*13_*39dupGCAGCAGCAGCAGCAGCAGCAGCAGCA downstream_gene_variant ENSP00000493530.1 A0A2R8YCF3

Frequencies

GnomAD3 genomes
AF:
0.000178
AC:
24
AN:
134642
Hom.:
1
Cov.:
20
show subpopulations
Gnomad AFR
AF:
0.0000611
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000752
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00177
Gnomad FIN
AF:
0.000102
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000201
Gnomad OTH
AF:
0.00
GnomAD4 exome
Data not reliable, filtered out with message: AS_VQSR
AF:
0.000166
AC:
222
AN:
1339224
Hom.:
2
Cov.:
32
AF XY:
0.000212
AC XY:
141
AN XY:
665362
show subpopulations
Gnomad4 AFR exome
AF:
0.0000377
Gnomad4 AMR exome
AF:
0.0000563
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00130
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000108
Gnomad4 OTH exome
AF:
0.000145
GnomAD4 genome
AF:
0.000178
AC:
24
AN:
134740
Hom.:
1
Cov.:
20
AF XY:
0.000214
AC XY:
14
AN XY:
65508
show subpopulations
Gnomad4 AFR
AF:
0.0000609
Gnomad4 AMR
AF:
0.0000751
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00177
Gnomad4 FIN
AF:
0.000102
Gnomad4 NFE
AF:
0.000201
Gnomad4 OTH
AF:
0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

Splicing

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs193922926; hg19: chr6-16327915; API