rs112144165

Positions:

• chr3-132683432-G-A
• chr3-132683432-G-C

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_Moderate BP6_Very_Strong BP7 BS1 BS2

The NM_153240.5(NPHP3):​c.3663C>T​(p.Ala1221Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000299 in 1,613,168 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0012 (1 hom., cov: 32)
  • Exomes 𝑓: 0.00021 (3 hom.)
• Consequence: NPHP3 NM_153240.5 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7
• Conservation: PhyloP100: 0.392

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:48351): (NPHP3-ACAD11 readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring NPHP3 (nephronophthisis 3, adolescent) and ACAD11 (acyl-CoA dehydrogenase family, member 11) genes on chromosome 3. The read-through transcript is a candidate for nonsense-mediated mRNA decay (NMD), and is thus unlikely to produce a protein product. [provided by RefSeq, Feb 2011]

NPHP3 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -19 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.43).
• BP6: Variant 3-132683432-G-A is Benign according to our data. Variant chr3-132683432-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 262707.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=0.392 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00119 (181/152230) while in subpopulation AFR AF= 0.00375 (156/41548). AF 95% confidence interval is 0.00327. There are 1 homozygotes in gnomad4. There are 80 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAdExome4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NPHP3	NM_153240.5	c.3663C>T	p.Ala1221Ala	synonymous_variant	25/27	ENST00000337331.10	NP_694972.3
NPHP3-ACAD11	NR_037804.1	n.3669C>T		non_coding_transcript_exon_variant	24/45

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NPHP3	ENST00000337331.10	c.3663C>T	p.Ala1221Ala	synonymous_variant	25/27	1	NM_153240.5	ENSP00000338766.5
NPHP3-ACAD11	ENST00000632629.1	c.309C>T	p.Ala103Ala	synonymous_variant	2/5	2		ENSP00000488520.1

Frequencies

GnomAD3 genomes AF: 0.00118 AC: 179 AN: 152112 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.00372

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00131

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.000956

GnomAD3 exomes AF: 0.000318 AC: 80 AN: 251254 Hom.: 0 AF XY: 0.000236 AC XY: 32 AN XY: 135814

Gnomad AFR exome AF: 0.00363

Gnomad AMR exome AF: 0.000405

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.000653

GnomAD4 exome AF: 0.000207 AC: 302 AN: 1460938 Hom.: 3 Cov.: 30 AF XY: 0.000194 AC XY: 141 AN XY: 726816

Gnomad4 AFR exome AF: 0.00598

Gnomad4 AMR exome AF: 0.000425

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000348

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000450

Gnomad4 OTH exome AF: 0.00113

GnomAD4 genome AF: 0.00119 AC: 181 AN: 152230 Hom.: 1 Cov.: 32 AF XY: 0.00107 AC XY: 80 AN XY: 74432

Gnomad4 AFR AF: 0.00375

Gnomad4 AMR AF: 0.00131

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000294

Gnomad4 OTH AF: 0.000946

Alfa AF: 0.000608 Hom.: 0

Bravo AF: 0.00150

Asia WGS AF: 0.00231 AC: 8 AN: 3476

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jul 06, 2017	- -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -

not provided Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Oct 19, 2021	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Oct 01, 2024	NPHP3: BP4, BP7 -

Kidney disorder Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Genome Diagnostics Laboratory, The Hospital for Sick Children

Feb 06, 2017

- -

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

Dec 05, 2021

- -

Nephronophthisis Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 30, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.43
CADD	Benign	8.2
DANN	Benign	0.64

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: rs112144165; hg19: chr3-132402276;