1-39665535-C-T

Position:

• chr1-39665535-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_032526.3(NT5C1A):​c.419G>A​(p.Ser140Asn) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,460,676 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 Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: NT5C1A NM_032526.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.32

Genes affected

NT5C1A (HGNC:17819): (5'-nucleotidase, cytosolic IA) Cytosolic nucleotidases, such as NT5C1A, dephosphorylate nucleoside monophosphates (Hunsucker et al., 2001 [PubMed 11133996]).[supplied by OMIM, Mar 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.932

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NT5C1A	NM_032526.3	c.419G>A	p.Ser140Asn	missense_variant	3/6	ENST00000235628.2	NP_115915.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NT5C1A	ENST00000235628.2	c.419G>A	p.Ser140Asn	missense_variant	3/6	1	NM_032526.3	ENSP00000235628.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460676 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 726574

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 05, 2024

The c.419G>A (p.S140N) alteration is located in exon 3 (coding exon 3) of the NT5C1A gene. This alteration results from a G to A substitution at nucleotide position 419, causing the serine (S) at amino acid position 140 to be replaced by an asparagine (N). 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	Pathogenic	0.85
BayesDel_addAF	Uncertain	0.033	T
BayesDel_noAF	Benign	-0.19
CADD	Pathogenic	28
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.62	D
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.73
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.87	D
M_CAP	Benign	0.011	T
MetaRNN	Pathogenic	0.93	D
MetaSVM	Uncertain	-0.090	T
MutationAssessor	Pathogenic	3.8	H
PrimateAI	Uncertain	0.72	T
PROVEAN	Uncertain	-2.7	D
REVEL	Benign	0.29
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.019	D
Polyphen		0.99	D
Vest4		0.71
MutPred		0.93		Loss of sheet (P = 0.0457);
MVP		0.37
MPC		1.1
ClinPred		1.0	D
GERP RS		5.3
Varity_R		0.73
gMVP		0.85

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr1-40131207;