9-85588368-G-A

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_001330701.2(AGTPBP1):c.2833C>T(p.Gln945Ter) variant causes a stop gained change. The variant allele was found at a frequency of 0.00000137 in 1,461,206 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★). Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: AGTPBP1 NM_001330701.2 stop_gained
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 6.31

Genes affected

AGTPBP1 (HGNC:17258): (ATP/GTP binding carboxypeptidase 1) NNA1 is a zinc carboxypeptidase that contains nuclear localization signals and an ATP/GTP-binding motif that was initially cloned from regenerating spinal cord neurons of the mouse.[supplied by OMIM, Jul 2002]

ACMG classification

Verdict is Pathogenic. Variant got 12 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 9-85588368-G-A is Pathogenic according to our data. Variant chr9-85588368-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 2444496.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
AGTPBP1	NM_001330701.2	c.2833C>T	p.Gln945Ter	stop_gained	21/26	ENST00000357081.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AGTPBP1	ENST00000357081.8	c.2833C>T	p.Gln945Ter	stop_gained	21/26	5	NM_001330701.2	P1
AGTPBP1	ENST00000376083.7	c.2713C>T	p.Gln905Ter	stop_gained	21/26	1
AGTPBP1	ENST00000337006.8	c.2989C>T	p.Gln997Ter	stop_gained	20/25	5
AGTPBP1	ENST00000628899.1	c.2869C>T	p.Gln957Ter	stop_gained	20/25	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461206 Hom.: 0 Cov.: 30 AF XY: 0.00000275 AC XY: 2 AN XY: 726892

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: 0.0000232

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Neurodegeneration, childhood-onset, with cerebellar atrophy Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Diagnostics Services (NGS), CSIR - Centre For Cellular And Molecular Biology

Mar 16, 2023

The c.2833C>T variant is not present in publicly available population databases like 1000 Genomes, ExAC, EVS, Indian Exome Database or our in-house exome database. The variant has neither been published in literature nor reported to clinical databases like in ClinVar, Human Gene Mutation Database (HGMD) or OMIM, in any affected individuals. In silico pathogenicity prediction programs like MutationTaster2, CADD, Varsome, Franklin etc predicted this variant to be likely deleterious. This variant creates a premature translational stop signal at the 945th amino acid position of the transcript that may either result in translation of a truncated protein or causes nonsense mediated decay of the mRNA. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.62	D
BayesDel_noAF	Pathogenic	0.65
Cadd	Pathogenic	42
Dann	Uncertain	1.0
Eigen	Pathogenic	1.2
Eigen_PC	Pathogenic	1.0
FATHMM_MKL	Pathogenic	0.97	D
MutationTaster	Benign	1.0	A;A;A;D;D
Vest4		0.80
GERP RS		6.1

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr9-88203283;