rs200046908

Positions:

• chr3-132690511-T-C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The ENST00000337331.10(NPHP3):​c.2693+17A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0032 in 1,608,792 control chromosomes in the GnomAD database, including 11 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0022 (1 hom., cov: 32)
  • Exomes 𝑓: 0.0033 (10 hom.)
• Consequence: NPHP3 ENST00000337331.10 intron
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7
• Conservation: PhyloP100: 0.734

Genes affected

NPHP3 (HGNC:7907): (nephrocystin 3) This gene encodes a protein containing a coiled-coil (CC) domain, a tubulin-tyrosine ligase (TTL) domain, and a tetratrico peptide repeat (TPR) domain. The encoded protein interacts with nephrocystin, it is required for normal ciliary development, and it functions in renal tubular development. Mutations in this gene are associated with nephronophthisis type 3, and also with renal-hepatic-pancreatic dysplasia, and Meckel syndrome type 7. Naturally occurring read-through transcripts exist between this gene and the downstream ACAD11 (acyl-CoA dehydrogenase family, member 11) gene. [provided by RefSeq, Feb 2011]

NPHP3-ACAD11 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BP6: Variant 3-132690511-T-C is Benign according to our data. Variant chr3-132690511-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 262699.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr3-132690511-T-C is described in Lovd as [Benign].
• BS1: Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.00218 (332/152334) while in subpopulation SAS AF= 0.00394 (19/4820). AF 95% confidence interval is 0.00293. There are 1 homozygotes in gnomad4. There are 165 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAdExome4 at 10 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NPHP3	NM_153240.5	c.2693+17A>G		intron_variant		ENST00000337331.10	NP_694972.3
NPHP3-ACAD11	NR_037804.1	n.2699+17A>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NPHP3	ENST00000337331.10	c.2693+17A>G		intron_variant		1	NM_153240.5	ENSP00000338766	P1

Frequencies

GnomAD3 genomes AF: 0.00218 AC: 332 AN: 152216 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.000844

Gnomad AMI AF: 0.00110

Gnomad AMR AF: 0.00111

Gnomad ASJ AF: 0.00144

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00394

Gnomad FIN AF: 0.00254

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.00328

Gnomad OTH AF: 0.00191

GnomAD3 exomes AF: 0.00241 AC: 604 AN: 250818 Hom.: 1 AF XY: 0.00253 AC XY: 343 AN XY: 135684

Gnomad AFR exome AF: 0.000686

Gnomad AMR exome AF: 0.00130

Gnomad ASJ exome AF: 0.00149

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00255

Gnomad FIN exome AF: 0.00287

Gnomad NFE exome AF: 0.00338

Gnomad OTH exome AF: 0.00164

GnomAD4 exome AF: 0.00330 AC: 4809 AN: 1456458 Hom.: 10 Cov.: 29 AF XY: 0.00331 AC XY: 2398 AN XY: 725054

Gnomad4 AFR exome AF: 0.000270

Gnomad4 AMR exome AF: 0.00159

Gnomad4 ASJ exome AF: 0.00146

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00260

Gnomad4 FIN exome AF: 0.00303

Gnomad4 NFE exome AF: 0.00372

Gnomad4 OTH exome AF: 0.00292

GnomAD4 genome AF: 0.00218 AC: 332 AN: 152334 Hom.: 1 Cov.: 32 AF XY: 0.00222 AC XY: 165 AN XY: 74484

Gnomad4 AFR AF: 0.000841

Gnomad4 AMR AF: 0.00111

Gnomad4 ASJ AF: 0.00144

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00394

Gnomad4 FIN AF: 0.00254

Gnomad4 NFE AF: 0.00328

Gnomad4 OTH AF: 0.00189

Alfa AF: 0.00312 Hom.: 0

Bravo AF: 0.00195

Asia WGS AF: 0.00144 AC: 5 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:5

Benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Oct 27, 2017	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -

Nephronophthisis 3;C2673885:NPHP3-related Meckel-like syndrome;C3715199:Renal-hepatic-pancreatic dysplasia 1 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Nov 05, 2021

- -

Nephronophthisis Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 29, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	5.8
DANN	Benign	0.48

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

Other links and lift over

dbSNP: rs200046908; hg19: chr3-132409355;