1-179557078-T-A

Variant names:

• chr1-179557078-T-A
• NM_014625.4:c.687A>T
• NPHS2 p.Arg229Arg

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_014625.4(NPHS2):​c.687A>T​(p.Arg229Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. R229R) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NPHS2 NM_014625.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.253
• Publications: 0 publications found

Genes affected

NPHS2 (HGNC:13394): (NPHS2 stomatin family member, podocin) This gene encodes a protein that plays a role in the regulation of glomerular permeability. Mutations in this gene cause steroid-resistant nephrotic syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2014]

NPHS2 Gene-Disease associations (from GenCC):

• nephrotic syndrome, type 2

  Inheritance: AR, AD Classification: DEFINITIVE, STRONG, LIMITED Submitted by: Illumina, Labcorp Genetics (formerly Invitae), G2P, Myriad Women's Health, Ambry Genetics
• familial idiopathic steroid-resistant nephrotic syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.46).
• BP7: Synonymous conserved (PhyloP=-0.253 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014625.4. 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
	NPHS2	NM_014625.4	MANE Select	c.687A>T	p.Arg229Arg	synonymous	Exon 5 of 8	NP_055440.1	Q9NP85-1
	NPHS2	NM_001297575.2		c.535-2547A>T		intron	N/A	NP_001284504.1	Q9NP85-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NPHS2	ENST00000367615.9	TSL:1 MANE Select	c.687A>T	p.Arg229Arg	synonymous	Exon 5 of 8	ENSP00000356587.4	Q9NP85-1
	NPHS2	ENST00000367616.4	TSL:1	c.535-2547A>T		intron	N/A	ENSP00000356588.4	Q9NP85-2
	NPHS2	ENST00000902256.1		c.510A>T	p.Arg170Arg	synonymous	Exon 3 of 6	ENSP00000572315.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.46
CADD	Benign	5.9
DANN	Benign	0.77
PhyloP100		-0.25
Mutation Taster		=100/0	polymorphism

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

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

Other links and lift over

hg19: chr1-179526213;