rs751418986

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 8P and 9B. PVS1BP6BS1BS2

The NM_001077350.3(NPRL3):c.1162-1G>C variant causes a splice acceptor, intron change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000188 in 1,545,088 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 1/1 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

NPRL3
NM_001077350.3 splice_acceptor, intron

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 7.46

Publications

0 publications found

Variant links:

Genes affected

NPRL3 (HGNC:14124): (NPR3 like, GATOR1 complex subunit) Contributes to GTPase activator activity. Involved in cellular response to amino acid starvation and negative regulation of TOR signaling. Located in lysosomal membrane. Part of GATOR1 complex. Implicated in focal epilepsy. [provided by Alliance of Genome Resources, Apr 2022]

NPRL3 Gene-Disease associations (from GenCC):

focal epilepsy
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
epilepsy, familial focal, with variable foci 3
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
familial focal epilepsy with variable foci
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

NPRL3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

PVS1

Splicing +-2 bp (donor or acceptor) variant, LoF is a know mechanism of disease, No cryptic splice site detected. Exon removal results in frameshift change.

BP6

Variant 16-89903-C-G is Benign according to our data. Variant chr16-89903-C-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 542800.

BS1

Variant frequency is greater than expected in population amr. GnomAdExome4 allele frequency = 0.0000187 (26/1392886) while in subpopulation AMR AF = 0.000721 (25/34686). AF 95% confidence interval is 0.0005. There are 0 homozygotes in GnomAdExome4. There are 16 alleles in the male GnomAdExome4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High AC in GnomAdExome4 at 26 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NPRL3	NM_001077350.3 link	c.1162-1G>C		splice_acceptor_variant, intron_variant	Intron 11 of 13	ENST00000611875.5	NP_001070818.1	Q12980Q9BTE2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NPRL3	ENST00000611875.5 link	c.1162-1G>C		splice_acceptor_variant, intron_variant	Intron 11 of 13	5	NM_001077350.3	ENSP00000478273.1		Q12980

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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

GnomAD2 exomes

AF:

0.000170

AC:

AN:

147298

AF XY:

0.000217

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00101

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000490

GnomAD4 exome

AF:

0.0000187

AC:

AN:

1392886

Hom.:

Cov.:

AF XY:

0.0000233

AC XY:

AN XY:

687150

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31138

American (AMR)

AF:

0.000721

AC:

AN:

34686

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24934

East Asian (EAS)

AF:

0.00

AC:

AN:

35118

South Asian (SAS)

AF:

0.00

AC:

AN:

78448

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48070

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5658

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1077012

Other (OTH)

AF:

0.0000173

AC:

AN:

57822

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.0000197

AC:

AN:

152202

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74354

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41450

American (AMR)

AF:

0.000196

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.0000434

Hom.:

Bravo

AF:

0.0000831

ExAC

AF:

0.0000306

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 09, 2025

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: NPRL3 c.1162-1G>C is located in a canonical splice-site and is predicted to affect mRNA splicing resulting in a significantly altered protein due to either exon skipping, shortening, or inclusion of intronic material. Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing and loss of NPRL3 function. Several computational tools predict a significant impact on normal splicing: Four predict the variant abolishes a 3' acceptor site. Two predict the variant creates a 3' acceptor site. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 0.00017 in 147298 control chromosomes, predominantly at a frequency of 0.001 within the Latino subpopulation in the gnomAD database. The observed variant frequency within Latino control individuals in the gnomAD database exceeds the estimated maximal expected allele frequency for a pathogenic variant in NPRL3 causing Epilepsy, Familial Focal, With Variable Foci 1 phenotype. To our knowledge, no occurrence of c.1162-1G>C in individuals affected with Epilepsy, Familial Focal, With Variable Foci 1 and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 542800). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Epilepsy, familial focal, with variable foci 3

Benign:1

Dec 09, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.34

BayesDel_noAF

Uncertain

0.020

CADD

Uncertain

(source)

DANN

Uncertain

0.99

Eigen

Pathogenic

1.1

Eigen_PC

Pathogenic

0.90

FATHMM_MKL

Uncertain

0.96

PhyloP100

7.5

GERP RS

5.0

Mutation Taster

=0/100

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.99

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.93

Position offset: -7

DS_AL_spliceai

0.99

Position offset: -1

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over