15-22786677-AGCGGCGGCGGCGGCGGCGGCG-AGCG

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP3BP6_ModerateBS2

The NM_144599.5(NIPA1):​c.30_47delGGCGGCGGCGGCGGCGGC​(p.Ala11_Ala16del) variant causes a disruptive inframe deletion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000308 in 1,071,498 control chromosomes in the GnomAD database, with no homozygous occurrence. It is difficult to determine the true allele frequency of this variant because it is of type DEL_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.0000069 ( 0 hom., cov: 6)
Exomes 𝑓: 0.000035 ( 0 hom. )

Consequence

NIPA1
NM_144599.5 disruptive_inframe_deletion

Scores

Not classified

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 1.48

Publications

11 publications found
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]
NIPA1 Gene-Disease associations (from GenCC):
  • hereditary spastic paraplegia 6
    Inheritance: AD Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP3
Nonframeshift variant in repetitive region in NM_144599.5
BP6
Variant 15-22786677-AGCGGCGGCGGCGGCGGCG-A is Benign according to our data. Variant chr15-22786677-AGCGGCGGCGGCGGCGGCG-A is described in ClinVar as Likely_benign. ClinVar VariationId is 3632912.Status of the report is criteria_provided_single_submitter, 1 stars.
BS2
High AC in GnomAdExome4 at 32 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
NIPA1NM_144599.5 linkc.30_47delGGCGGCGGCGGCGGCGGC p.Ala11_Ala16del disruptive_inframe_deletion Exon 1 of 5 ENST00000337435.9 NP_653200.2
NIPA1NM_001142275.1 linkc.-48+438_-48+455delGGCGGCGGCGGCGGCGGC intron_variant Intron 1 of 4 NP_001135747.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
NIPA1ENST00000337435.9 linkc.30_47delGGCGGCGGCGGCGGCGGC p.Ala11_Ala16del disruptive_inframe_deletion Exon 1 of 5 1 NM_144599.5 ENSP00000337452.4

Frequencies

GnomAD3 genomes
AF:
0.00000688
AC:
1
AN:
145406
Hom.:
0
Cov.:
6
show subpopulations
Gnomad AFR
AF:
0.0000249
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
0.0000346
AC:
32
AN:
926092
Hom.:
0
AF XY:
0.0000406
AC XY:
18
AN XY:
442826
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
17460
American (AMR)
AF:
0.00
AC:
0
AN:
5856
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
8166
East Asian (EAS)
AF:
0.00
AC:
0
AN:
8916
South Asian (SAS)
AF:
0.00
AC:
0
AN:
21810
European-Finnish (FIN)
AF:
0.000125
AC:
1
AN:
8024
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
2628
European-Non Finnish (NFE)
AF:
0.0000378
AC:
31
AN:
820600
Other (OTH)
AF:
0.00
AC:
0
AN:
32632
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.450
Heterozygous variant carriers
0
2
4
5
7
9
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00000688
AC:
1
AN:
145406
Hom.:
0
Cov.:
6
AF XY:
0.0000141
AC XY:
1
AN XY:
70686
show subpopulations
African (AFR)
AF:
0.0000249
AC:
1
AN:
40094
American (AMR)
AF:
0.00
AC:
0
AN:
14774
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3384
East Asian (EAS)
AF:
0.00
AC:
0
AN:
4834
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4704
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
8836
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
304
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
65568
Other (OTH)
AF:
0.00
AC:
0
AN:
2014
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.00
Hom.:
108

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Hereditary spastic paraplegia 6 Benign:1
Oct 17, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

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Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
PhyloP100
1.5

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs531550505; hg19: chr15-23086391; API