2-110163048-C-T

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PP3_StrongPP5_Very_Strong

The NM_001128178.3(NPHP1):c.859G>A(p.Gly287Arg) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.000187 in 1,610,430 control chromosomes in the GnomAD database, with no homozygous occurrence. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (★★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00019 ( 0 hom. )

Consequence

NPHP1
NM_001128178.3 missense, splice_region

Scores

Splicing: ADA: 1.000

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:15

Conservation

PhyloP100: 6.25

Publications

16 publications found

Variant links:

Genes affected

NPHP1 (HGNC:7905): (nephrocystin 1) This gene encodes a protein with src homology domain 3 (SH3) patterns. This protein interacts with Crk-associated substrate, and it appears to function in the control of cell division, as well as in cell-cell and cell-matrix adhesion signaling, likely as part of a multifunctional complex localized in actin- and microtubule-based structures. Mutations in this gene cause familial juvenile nephronophthisis type 1, a kidney disorder involving both tubules and glomeruli. Defects in this gene are also associated with Senior-Loken syndrome type 1, also referred to as juvenile nephronophthisis with Leber amaurosis, which is characterized by kidney and eye disease, and with Joubert syndrome type 4, which is characterized by cerebellar ataxia, oculomotor apraxia, psychomotor delay and neonatal breathing abnormalities, sometimes including retinal dystrophy and renal disease. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

NPHP1 Gene-Disease associations (from GenCC):

Joubert syndrome with renal defect
Inheritance: AR Classification: DEFINITIVE, MODERATE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, G2P
nephronophthisis 1
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Orphanet, Labcorp Genetics (formerly Invitae), G2P
Bardet-Biedl syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Senior-Loken syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

NPHP1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 12 ACMG points.

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

PP5

Variant 2-110163048-C-T is Pathogenic according to our data. Variant chr2-110163048-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 3510.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001128178.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
NPHP1	NM_001128178.3	MANE Select	c.859G>A	p.Gly287Arg	missense splice_region	Exon 9 of 20	NP_001121650.1	O15259-2
NPHP1	NM_000272.5		c.1027G>A	p.Gly343Arg	missense splice_region	Exon 9 of 20	NP_000263.2
NPHP1	NM_207181.4		c.1024G>A	p.Gly342Arg	missense splice_region	Exon 9 of 20	NP_997064.2	O15259-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
NPHP1	ENST00000445609.7	TSL:1 MANE Select	c.859G>A	p.Gly287Arg	missense splice_region	Exon 9 of 20	ENSP00000389879.3	O15259-2
NPHP1	ENST00000316534.8	TSL:1	c.1027G>A	p.Gly343Arg	missense splice_region	Exon 9 of 20	ENSP00000313169.4	O15259-4
NPHP1	ENST00000393272.7	TSL:1	c.1024G>A	p.Gly342Arg	missense splice_region	Exon 9 of 20	ENSP00000376953.3	O15259-1

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152134

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

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:

0.000221

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000116

AC:

AN:

251006

AF XY:

0.000125

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000220

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000194

AC:

283

AN:

1458296

Hom.:

Cov.:

AF XY:

0.000183

AC XY:

133

AN XY:

725760

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33424

American (AMR)

AF:

0.00

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26122

East Asian (EAS)

AF:

0.00

AC:

AN:

39676

South Asian (SAS)

AF:

0.00

AC:

AN:

86140

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53386

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.000246

AC:

273

AN:

1108796

Other (OTH)

AF:

0.000133

AC:

AN:

60278

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.461

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<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:

0.000118

AC:

AN:

152134

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74322

show subpopulations

African (AFR)

AF:

0.0000724

AC:

AN:

41438

American (AMR)

AF:

0.00

AC:

AN:

15266

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5202

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10598

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000221

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.519

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:

0.000189

Hom.:

Bravo

AF:

0.000102

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000107

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000218

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Pathogenic

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (7)

Nephronophthisis 1 (2)

Inborn genetic diseases (1)

Joubert syndrome with renal defect (1)

Joubert syndrome with renal defect;C1855681:Nephronophthisis 1;C4551559:Senior-Loken syndrome 1 (1)

Nephronophthisis (1)

NPHP1-related disorder (1)

Retinal dystrophy (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.50

BayesDel_addAF

Benign

-0.025

BayesDel_noAF

Uncertain

0.020

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.50

Eigen

Pathogenic

0.78

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.94

M_CAP

Uncertain

0.19

MetaRNN

Uncertain

0.71

MetaSVM

Uncertain

-0.0026

MutationAssessor

Benign

1.9

PhyloP100

6.2

PrimateAI

Uncertain

0.57

PROVEAN

Uncertain

-3.5

REVEL

Uncertain

0.60

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.0030

Polyphen

1.0

Vest4

0.57

MutPred

0.68

Gain of solvent accessibility (P = 0.0584)

MVP

0.95

MPC

0.48

ClinPred

0.30

GERP RS

5.8

Varity_R

0.47

gMVP

0.73

Mutation Taster

=2/98

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

1.0

SpliceAI score (max)

0.70

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.70

Position offset: 0

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over