NM_020725.2:c.1781T>G

Variant names:

• chr7-105614553-A-C
• rs1233675296
• NM_020725.2:c.1781T>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_020725.2(ATXN7L1):​c.1781T>G​(p.Met594Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ATXN7L1 NM_020725.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.64

Genes affected

ATXN7L1 (HGNC:22210): (ataxin 7 like 1)

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1733385).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ATXN7L1	NM_020725.2	c.1781T>G	p.Met594Arg	missense_variant	Exon 10 of 12	ENST00000419735.8	NP_065776.1
ATXN7L1	NM_001385596.1	c.1781T>G	p.Met594Arg	missense_variant	Exon 10 of 12		NP_001372525.1
ATXN7L1	NM_138495.2	c.1409T>G	p.Met470Arg	missense_variant	Exon 8 of 10		NP_612504.1
ATXN7L1	NM_001318229.2	c.1133T>G	p.Met378Arg	missense_variant	Exon 10 of 10		NP_001305158.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ATXN7L1	ENST00000419735.8	c.1781T>G	p.Met594Arg	missense_variant	Exon 10 of 12	1	NM_020725.2	ENSP00000410759.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000649 AC: 1 AN: 154156 Hom.: 0 AF XY: 0.0000124 AC XY: 1 AN XY: 80968

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000917

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Feb 12, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1781T>G (p.M594R) alteration is located in exon 10 (coding exon 10) of the ATXN7L1 gene. This alteration results from a T to G substitution at nucleotide position 1781, causing the methionine (M) at amino acid position 594 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.28
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.23
CADD	Uncertain	24
DANN	Benign	0.89
DEOGEN2	Benign	0.0089	T;.;T;T
Eigen	Benign	0.061
Eigen_PC	Uncertain	0.24
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Uncertain	0.94	D;D;D;D
M_CAP	Benign	0.0082	T
MetaRNN	Benign	0.17	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.6	L;.;.;.
PrimateAI	Uncertain	0.77	T
PROVEAN	Benign	-0.59	N;N;N;N
REVEL	Benign	0.13
Sift	Benign	0.15	T;T;D;T
Sift4G	Benign	0.35	T;T;T;T
Polyphen		0.34	B;P;.;.
Vest4		0.71
MutPred		0.36		Gain of sheet (P = 0.0149);.;.;.;
MVP		0.51
MPC		0.83
ClinPred		0.22	T
GERP RS		5.7
Varity_R		0.55
gMVP		0.47

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

LitVar

Other links and lift over

dbSNP: rs1233675296; hg19: chr7-105255000;