1-11846911-GCC-GCCCCCC

Variant names:

• chr1-11846911-G-GCCCC
• rs67372226
• NM_006172.4:c.450+198_450+201dupGGGG

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_006172.4(NPPA):​c.450+198_450+201dupGGGG variant causes a intron change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.0000072 (0 hom., cov: 0)
• Consequence: NPPA NM_006172.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.174
• Publications: 0 publications found

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]

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]

NPPA-AS1 (HGNC:37635): (NPPA antisense RNA 1)

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006172.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NPPA	NM_006172.4	MANE Select	c.450+198_450+201dupGGGG		intron	N/A	NP_006163.1	P01160
	NPPA-AS1	NR_037806.1		n.1480-516_1480-513dupCCCC		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NPPA	ENST00000376480.7	TSL:1 MANE Select	c.450+201_450+202insGGGG		intron	N/A	ENSP00000365663.3	P01160
	CLCN6	ENST00000446542.5	TSL:1	n.782-523_782-522insCCCC		intron	N/A
	NPPA	ENST00000376476.1	TSL:3	c.300+201_300+202insGGGG		intron	N/A	ENSP00000365659.1	B0ZBE8

Frequencies

GnomAD3 genomes AF: 0.00000720 AC: 1 AN: 138968 Hom.: 0 Cov.: 0

Gnomad AFR AF: 0.00

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: 0.0000156

Gnomad OTH AF: 0.00

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.00000720 AC: 1 AN: 138968 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 66794

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 38722

American (AMR) AF: 0.00 AC: 0 AN: 13826

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3342

East Asian (EAS) AF: 0.00 AC: 0 AN: 4036

South Asian (SAS) AF: 0.00 AC: 0 AN: 4234

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 7536

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 310

European-Non Finnish (NFE) AF: 0.0000156 AC: 1 AN: 64178

Other (OTH) AF: 0.00 AC: 0 AN: 1930

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.17

Splicing

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

Other links and lift over

dbSNP: rs67372226; hg19: chr1-11906968;