rs150794709

Positions:

chr1-11847366-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_006172.4(NPPA):c.197C>T(p.Pro66Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00027 in 1,613,778 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. P66P) has been classified as Benign.

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00029 ( 0 hom. )

Consequence

NPPA
NM_006172.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 2.27

Variant links:

Genes affected

NPPA (HGNC:7939): (natriuretic peptide A) The protein encoded by this gene belongs to the natriuretic peptide family. Natriuretic peptides are implicated in the control of extracellular fluid volume and electrolyte homeostasis. This protein is synthesized as a large precursor (containing a signal peptide), which is processed to release a peptide from the N-terminus with similarity to vasoactive peptide, cardiodilatin, and another peptide from the C-terminus with natriuretic-diuretic activity. Mutations in this gene have been associated with atrial fibrillation familial type 6. This gene is located adjacent to another member of the natriuretic family of peptides on chromosome 1. [provided by RefSeq, Oct 2015]

NPPA links:

CLCN6 (HGNC:2024): (chloride voltage-gated channel 6) This gene encodes a member of the voltage-dependent chloride channel protein family. Members of this family can function as either chloride channels or antiporters. This protein is primarily localized to late endosomes and functions as a chloride/proton antiporter. Alternate splicing results in both coding and non-coding variants. Additional alternately spliced variants have been described but their full-length structure is unknown. [provided by RefSeq, Mar 2012]

CLCN6 links:

NPPA-AS1 (HGNC:):

NPPA-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.114857614).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NPPA	NM_006172.4 linkuse as main transcript	c.197C>T	p.Pro66Leu	missense_variant	2/3	ENST00000376480.7	NP_006163.1
NPPA-AS1	NR_037806.1 linkuse as main transcript	n.1480-68G>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
NPPA	ENST00000376480.7 linkuse as main transcript	c.197C>T	p.Pro66Leu	missense_variant	2/3	1	NM_006172.4	ENSP00000365663	P1
CLCN6	ENST00000446542.5 linkuse as main transcript	n.782-68G>A		intron_variant, non_coding_transcript_variant		1
NPPA	ENST00000376476.1 linkuse as main transcript	c.47C>T	p.Pro16Leu	missense_variant	2/3	3		ENSP00000365659
CLCN6	ENST00000400892.3 linkuse as main transcript	c.*1962-211G>A		intron_variant, NMD_transcript_variant		3		ENSP00000496938

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.000220

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000801

AC:

AN:

249666

Hom.:

AF XY:

0.0000665

AC XY:

AN XY:

135262

show subpopulations

Gnomad AFR exome

AF:

0.0000631

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000151

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000286

AC:

418

AN:

1461592

Hom.:

Cov.:

AF XY:

0.000298

AC XY:

217

AN XY:

727092

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000337

Gnomad4 OTH exome

AF:

0.000613

GnomAD4 genome

AF:

0.000112

AC:

AN:

152186

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74354

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000220

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.000261

Hom.:

Bravo

AF:

0.000140

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.0000659

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.000296

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Atrial fibrillation, familial, 6;C3810401:Atrial standstill 2

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Feb 21, 2022	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago	Mar 30, 2021	NPPA NM_006172.3 exon 2 p.Pro66Leu (c.197C>T): This variant has not been reported in the literature and is present in 0.01% (20/127896) of European alleles in the Genome Aggregation Database (http://gnomad.broadinstitute.org/variant/1-11907423-G-A). This variant is present in ClinVar (Variation ID:469605). Evolutionary conservation and computational predictive tools suggest that this variant may not impact the protein. In summary, data on this variant is insufficient for disease classification. Therefore, the clinical significance of this variant is uncertain. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 15, 2021

The c.197C>T (p.P66L) alteration is located in exon 2 (coding exon 2) of the NPPA gene. This alteration results from a C to T substitution at nucleotide position 197, causing the proline (P) at amino acid position 66 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Atrial fibrillation, familial, 6

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 07, 2023

This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 66 of the NPPA protein (p.Pro66Leu). This variant is present in population databases (rs150794709, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with NPPA-related conditions. ClinVar contains an entry for this variant (Variation ID: 469605). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.090

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.57

CADD

Benign

DANN

Benign

0.95

DEOGEN2

Benign

0.023

.;T;.

Eigen

Benign

-0.57

Eigen_PC

Benign

-0.40

FATHMM_MKL

Benign

0.59

LIST_S2

Benign

0.79

.;T;T

M_CAP

Benign

0.012

MetaRNN

Benign

0.11

T;T;T

MetaSVM

Benign

-1.0

MutationTaster

Benign

0.83

N;N

PrimateAI

Benign

0.43

PROVEAN

Benign

-1.6

N;.;N

REVEL

Benign

0.10

Sift

Benign

0.054

T;.;D

Sift4G

Benign

0.52

T;T;T

Vest4

0.13

MVP

0.64

MPC

0.024

ClinPred

0.095

GERP RS

4.7

gMVP

0.19

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over