chr19-35830956-C-T

Variant names:

• chr19-35830956-C-T
• rs386833939
• NM_004646.4:c.3482G>A

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 4P and 1B. PM2 PM5 BP4

The NM_004646.4(NPHS1):​c.3482G>A​(p.Gly1161Asp) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,046 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/24 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G1161V) has been classified as Likely pathogenic.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: NPHS1 NM_004646.4 missense, splice_region
• Scores: Splicing: ADA: 0.3759
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.680
• Publications: 0 publications found

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]

NPHS1 Gene-Disease associations (from GenCC):

• congenital nephrotic syndrome, Finnish type

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Myriad Women’s Health, G2P, Labcorp Genetics (formerly Invitae), ClinGen
• familial idiopathic steroid-resistant nephrotic syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr19-35830956-C-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 56501.Status of the report is no_assertion_criteria_provided, 0 stars.
• BP4: Computational evidence support a benign effect (MetaRNN=0.32339495).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004646.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NPHS1	NM_004646.4	MANE Select	c.3482G>A	p.Gly1161Asp	missense splice_region	Exon 28 of 29	NP_004637.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NPHS1	ENST00000378910.10	TSL:1 MANE Select	c.3482G>A	p.Gly1161Asp	missense splice_region	Exon 28 of 29	ENSP00000368190.4
	NPHS1	ENST00000869106.1		c.3422G>A	p.Gly1141Asp	missense splice_region	Exon 28 of 29	ENSP00000539165.1
	NPHS1	ENST00000353632.6	TSL:5	c.3362G>A	p.Gly1121Asp	missense splice_region	Exon 27 of 28	ENSP00000343634.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460046 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 726450

African (AFR) AF: 0.00 AC: 0 AN: 33442

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39688

South Asian (SAS) AF: 0.00 AC: 0 AN: 86206

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1110342

Other (OTH) AF: 0.0000166 AC: 1 AN: 60332

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.080
BayesDel_addAF	Benign	-0.037	T
BayesDel_noAF	Benign	-0.29
CADD	Benign	20
DANN	Uncertain	0.99
DEOGEN2	Benign	0.25	T
Eigen	Benign	-0.73
Eigen_PC	Benign	-0.71
FATHMM_MKL	Benign	0.093	N
LIST_S2	Benign	0.73	T
M_CAP	Benign	0.028	D
MetaRNN	Benign	0.32	T
MetaSVM	Benign	-0.75	T
MutationAssessor	Uncertain	2.2	M
PhyloP100		0.68
PrimateAI	Benign	0.42	T
PROVEAN	Benign	-0.54	N
REVEL	Benign	0.079
Sift	Uncertain	0.0030	D
Sift4G	Uncertain	0.0060	D
Polyphen		0.0030	B
Vest4		0.56
MutPred		0.24		Gain of loop (P = 0.1081)
MVP		0.73
MPC		0.14
ClinPred		0.44	T
GERP RS		0.19
Varity_R		0.12
gMVP		0.22
Mutation Taster		=78/22	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.38
dbscSNV1_RF	Benign	0.36
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

Other links and lift over

dbSNP: rs386833939; hg19: chr19-36321858;