1-11847601-CA-GG

Variant names:

• chr1-11847601-CA-GG
• NM_006172.4:c.83_84delTGinsCC
• NPPA p.Met28Thr

Variant summary

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

The NM_006172.4(NPPA):​c.83_84delTGinsCC​(p.Met28Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M28K) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NPPA NM_006172.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.894
• 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)

ENSG00000275915 (HGNC:):

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.83_84delTGinsCC	p.Met28Thr	missense	N/A	NP_006163.1	P01160
	NPPA-AS1	NR_037806.1		n.1647_1648delCAinsGG		non_coding_transcript_exon	Exon 4 of 4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NPPA	ENST00000376480.7	TSL:1 MANE Select	c.83_84delTGinsCC	p.Met28Thr	missense	N/A	ENSP00000365663.3	P01160
	CLCN6	ENST00000446542.5	TSL:1	n.949_950delCAinsGG		non_coding_transcript_exon	Exon 4 of 4
	NPPA	ENST00000953330.1		c.83_84delTGinsCC	p.Met28Thr	missense	N/A	ENSP00000623389.1

Frequencies

GnomAD3 genomes Cov.: 32

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

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.89

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr1-11907658;