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Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BA1

The NM_001940.4(ATN1):​c.1500_1508del​(p.Gln500_Gln502del) variant causes a inframe deletion change. The variant allele was found at a frequency of 0.0314 in 1,583,048 control chromosomes in the GnomAD database, including 1,748 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. Q488Q) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.081 ( 1075 hom., cov: 0)
Exomes 𝑓: 0.026 ( 673 hom. )

Consequence

ATN1
NM_001940.4 inframe_deletion

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, single submitter U:1B:2

Conservation

PhyloP100: 4.09
Variant links:
Genes affected
ATN1 (HGNC:3033): (atrophin 1) Dentatorubral pallidoluysian atrophy (DRPLA) is a rare neurodegenerative disorder characterized by cerebellar ataxia, myoclonic epilepsy, choreoathetosis, and dementia. The disorder is related to the expansion from 7-35 copies to 49-93 copies of a trinucleotide repeat (CAG/CAA) within this gene. The encoded protein includes a serine repeat and a region of alternating acidic and basic amino acids, as well as the variable glutamine repeat. Alternative splicing results in two transcripts variants that encode the same protein. [provided by RefSeq, Jul 2016]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BA1
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.227 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
ATN1NM_001940.4 linkuse as main transcriptc.1500_1508del p.Gln500_Gln502del inframe_deletion 5/10 ENST00000396684.3
ATN1NM_001007026.2 linkuse as main transcriptc.1500_1508del p.Gln500_Gln502del inframe_deletion 5/10

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
ATN1ENST00000396684.3 linkuse as main transcriptc.1500_1508del p.Gln500_Gln502del inframe_deletion 5/101 NM_001940.4 P1
ATN1ENST00000356654.8 linkuse as main transcriptc.1500_1508del p.Gln500_Gln502del inframe_deletion 5/101 P1

Frequencies

GnomAD3 genomes
AF:
0.0812
AC:
11766
AN:
144852
Hom.:
1067
Cov.:
0
show subpopulations
Gnomad AFR
AF:
0.231
Gnomad AMI
AF:
0.00450
Gnomad AMR
AF:
0.0633
Gnomad ASJ
AF:
0.0459
Gnomad EAS
AF:
0.0351
Gnomad SAS
AF:
0.0714
Gnomad FIN
AF:
0.00853
Gnomad MID
AF:
0.0355
Gnomad NFE
AF:
0.0170
Gnomad OTH
AF:
0.0674
GnomAD4 exome
AF:
0.0263
AC:
37875
AN:
1438100
Hom.:
673
AF XY:
0.0274
AC XY:
19596
AN XY:
716348
show subpopulations
Gnomad4 AFR exome
AF:
0.224
Gnomad4 AMR exome
AF:
0.0764
Gnomad4 ASJ exome
AF:
0.0486
Gnomad4 EAS exome
AF:
0.0300
Gnomad4 SAS exome
AF:
0.0719
Gnomad4 FIN exome
AF:
0.00921
Gnomad4 NFE exome
AF:
0.0147
Gnomad4 OTH exome
AF:
0.0377
GnomAD4 genome
AF:
0.0814
AC:
11805
AN:
144948
Hom.:
1075
Cov.:
0
AF XY:
0.0801
AC XY:
5640
AN XY:
70386
show subpopulations
Gnomad4 AFR
AF:
0.231
Gnomad4 AMR
AF:
0.0638
Gnomad4 ASJ
AF:
0.0459
Gnomad4 EAS
AF:
0.0345
Gnomad4 SAS
AF:
0.0715
Gnomad4 FIN
AF:
0.00853
Gnomad4 NFE
AF:
0.0170
Gnomad4 OTH
AF:
0.0662

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1Benign:2
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Benign:2
Likely benign, no assertion criteria providedclinical testingGenome Diagnostics Laboratory, University Medical Center Utrecht-- -
Likely benign, no assertion criteria providedclinical testingDiagnostic Laboratory, Department of Genetics, University Medical Center Groningen-- -
not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAl Jalila Children’s Genomics Center, Al Jalila Childrens Speciality HospitalMar 23, 2020- -

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: rs60216939; hg19: chr12-7045891; API