rs114203578

Positions:

• chr19-35842480-C-G
• chr19-35842480-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1 PM2 PM5 PP3 PP5

The NM_004646.4(NPHS1):​c.2405G>C​(p.Arg802Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R802Q) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NPHS1 NM_004646.4 missense
• Clinical Significance: Likely pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: -0.209

Genes affected

NPHS1 (HGNC:7908): (NPHS1 adhesion molecule, nephrin) This gene encodes a member of the immunoglobulin family of cell adhesion molecules that functions in the glomerular filtration barrier in the kidney. The gene is primarily expressed in renal tissues, and the protein is a type-1 transmembrane protein found at the slit diaphragm of glomerular podocytes. The slit diaphragm is thought to function as an ultrafilter to exclude albumin and other plasma macromolecules in the formation of urine. Mutations in this gene result in Finnish-type congenital nephrosis 1, characterized by severe proteinuria and loss of the slit diaphragm and foot processes.[provided by RefSeq, Oct 2009]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 3 uncertain in NM_004646.4
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr19-35842481-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 56471.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.823
• PP5: Variant 19-35842480-C-G is Pathogenic according to our data. Variant chr19-35842480-C-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 56472.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr19-35842480-C-G is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NPHS1	NM_004646.4	c.2405G>C	p.Arg802Pro	missense_variant	18/29	ENST00000378910.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NPHS1	ENST00000378910.10	c.2405G>C	p.Arg802Pro	missense_variant	18/29	1	NM_004646.4	P2
NPHS1	ENST00000353632.6	c.2405G>C	p.Arg802Pro	missense_variant	18/28	5		A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Finnish congenital nephrotic syndrome Pathogenic:1

Likely pathogenic, no assertion criteria provided

literature only

Juha Muilu Group; Institute for Molecular Medicine Finland (FIMM)

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.72
BayesDel_addAF	Uncertain	0.098	D
BayesDel_noAF	Benign	-0.10
CADD	Benign	15
DANN	Uncertain	0.99
DEOGEN2	Benign	0.40	T;.
Eigen	Benign	-0.25
Eigen_PC	Benign	-0.38
FATHMM_MKL	Benign	0.095	N
LIST_S2	Benign	0.77	T;T
M_CAP	Benign	0.040	D
MetaRNN	Pathogenic	0.82	D;D
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.5	M;M
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.31	T
PROVEAN	Uncertain	-3.0	D;D
REVEL	Benign	0.22
Sift	Benign	0.050	D;D
Sift4G	Benign	0.11	T;T
Polyphen		0.86	P;.
Vest4		0.80
MutPred		0.60		Loss of MoRF binding (P = 9e-04);Loss of MoRF binding (P = 9e-04);
MVP		0.61
MPC		0.48
ClinPred		0.93	D
GERP RS		1.0
Varity_R		0.92
gMVP		0.91

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: rs114203578; hg19: chr19-36333382;