15-22786677-A-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP7

The NM_144599.5(NIPA1):​c.21A>T​(p.Ala7=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000108 in 926,094 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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: 27)
Exomes 𝑓: 0.0000011 ( 0 hom. )

Consequence

NIPA1
NM_144599.5 synonymous

Scores

2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.16
Variant links:
Genes affected
NIPA1 (HGNC:17043): (NIPA magnesium transporter 1) This gene encodes a magnesium transporter that associates with early endosomes and the cell surface in a variety of neuronal and epithelial cells. This protein may play a role in nervous system development and maintenance. Multiple transcript variants encoding different isoforms have been found for this gene. Mutations in this gene have been associated with autosomal dominant spastic paraplegia 6. [provided by RefSeq, Nov 2008]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.74).
BP7
Synonymous conserved (PhyloP=-1.15 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
NIPA1NM_144599.5 linkuse as main transcriptc.21A>T p.Ala7= synonymous_variant 1/5 ENST00000337435.9 NP_653200.2
NIPA1NM_001142275.1 linkuse as main transcriptc.-48+429A>T intron_variant NP_001135747.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
NIPA1ENST00000337435.9 linkuse as main transcriptc.21A>T p.Ala7= synonymous_variant 1/51 NM_144599.5 ENSP00000337452 P1Q7RTP0-1
NIPA1ENST00000437912.6 linkuse as main transcriptc.-48+12364A>T intron_variant 1 ENSP00000393962 Q7RTP0-2
NIPA1ENST00000561183.5 linkuse as main transcriptc.-48+429A>T intron_variant 1 ENSP00000453722 Q7RTP0-2
NIPA1ENST00000560069.5 linkuse as main transcriptn.31+429A>T intron_variant, non_coding_transcript_variant 4

Frequencies

GnomAD3 genomes
Cov.:
27
GnomAD4 exome
AF:
0.00000108
AC:
1
AN:
926094
Hom.:
0
Cov.:
20
AF XY:
0.00
AC XY:
0
AN XY:
442826
show subpopulations
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:
0.00000122
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
27

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.74
CADD
Benign
12
DANN
Benign
0.93
RBP_binding_hub_radar
0.92
RBP_regulation_power_radar
3.8

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

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

Other links and lift over

dbSNP: rs749414711; hg19: chr15-23086391; API