16-20348484-C-G

Variant names:

• chr16-20348484-C-G
• rs121917774
• NM_003361.4:c.817G>C

Variant summary

Our verdict is Likely pathogenic. The variant received 9 ACMG points: 9P and 0B. PM1 PM2 PM5 PP2 PP3_Moderate

The NM_003361.4(UMOD):​c.817G>C​(p.Val273Leu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 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. V273F) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 33)
• Consequence: UMOD NM_003361.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.96
• Publications: 4 publications found

Genes affected

UMOD (HGNC:12559): (uromodulin) The protein encoded by this gene is the most abundant protein in mammalian urine under physiological conditions. Its excretion in urine follows proteolytic cleavage of the ectodomain of its glycosyl phosphatidylinosital-anchored counterpart that is situated on the luminal cell surface of the loop of Henle. This protein may act as a constitutive inhibitor of calcium crystallization in renal fluids. Excretion of this protein in urine may provide defense against urinary tract infections caused by uropathogenic bacteria. Defects in this gene are associated with the renal disorders medullary cystic kidney disease-2 (MCKD2), glomerulocystic kidney disease with hyperuricemia and isosthenuria (GCKDHI), and familial juvenile hyperuricemic nephropathy (FJHN). Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Jul 2013]

UMOD Gene-Disease associations (from GenCC):

• autosomal dominant medullary cystic kidney disease with or without hyperuricemia

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• glomerulocystic kidney disease with hyperuricemia and isosthenuria

  Inheritance: AD Classification: DEFINITIVE Submitted by: Laboratory for Molecular Medicine
• familial juvenile hyperuricemic nephropathy type 1

  Inheritance: AD, Unknown Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae)
• autosomal dominant medullary cystic kidney disease with hyperuricemia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 9 ACMG points.

• PM1: In a disulfide_bond (size 64) in uniprot entity UROM_HUMAN there are 18 pathogenic changes around while only 1 benign (95%) in NM_003361.4
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr16-20348484-C-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 12264.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 69 curated pathogenic missense variants (we use a threshold of 10). The gene has 14 curated benign missense variants. Gene score misZ: 0.99836 (below the threshold of 3.09). Trascript score misZ: 0.48416 (below the threshold of 3.09). GenCC associations: The gene is linked to autosomal dominant medullary cystic kidney disease with or without hyperuricemia, familial juvenile hyperuricemic nephropathy type 1, glomerulocystic kidney disease with hyperuricemia and isosthenuria, autosomal dominant medullary cystic kidney disease with hyperuricemia.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.84

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
UMOD	NM_003361.4	c.817G>C	p.Val273Leu	missense_variant	Exon 3 of 11	ENST00000396138.9	NP_003352.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
UMOD	ENST00000396138.9	c.817G>C	p.Val273Leu	missense_variant	Exon 3 of 11	5	NM_003361.4	ENSP00000379442.5
UMOD	ENST00000396134.6	c.916G>C	p.Val306Leu	missense_variant	Exon 4 of 12	2		ENSP00000379438.2
UMOD	ENST00000570689.5	c.817G>C	p.Val273Leu	missense_variant	Exon 3 of 11	5		ENSP00000460548.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.57
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Uncertain	0.11
CADD	Uncertain	24
DANN	Uncertain	1.0
Eigen	Uncertain	0.48
Eigen_PC	Uncertain	0.42
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.96	D;D;D;.
M_CAP	Pathogenic	0.60	D
MetaRNN	Pathogenic	0.84	D;D;D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	3.3	.;.;M;M
PhyloP100		5.0
PrimateAI	Uncertain	0.60	T
PROVEAN	Benign	-2.1	N;.;N;.
REVEL	Pathogenic	0.66
Sift	Uncertain	0.0030	D;.;D;.
Sift4G	Benign	0.16	T;T;T;T
Polyphen		0.97	.;.;D;D
Vest4		0.51
MutPred		0.82		.;.;Loss of catalytic residue at T277 (P = 0.3072);Loss of catalytic residue at T277 (P = 0.3072);
MVP		0.96
MPC		0.35
ClinPred		0.97	D
GERP RS		3.7
Varity_R		0.15
gMVP		0.64

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs121917774; hg19: chr16-20359806;