Genetic Variant UMOD:p.Ser632* (chr16-20333342-G-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PVS1_ModeratePM2

The NM_003361.4(UMOD):c.1895C>A(p.Ser632*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,460,964 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. S632S) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

UMOD
NM_003361.4 stop_gained

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.216

Publications

0 publications found

Variant links:

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

UMOD links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.0146 CDS is truncated, and there are 0 pathogenic variants in the truncated region.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
UMOD	NM_003361.4 link	c.1895C>A	p.Ser632*	stop_gained	Exon 11 of 11	ENST00000396138.9	NP_003352.2	P07911-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
UMOD	ENST00000396138.9 link	c.1895C>A	p.Ser632*	stop_gained	Exon 11 of 11	5	NM_003361.4	ENSP00000379442.5	P07911-1X6RBG4
UMOD	ENST00000396134.6 link	c.1994C>A	p.Ser665*	stop_gained	Exon 12 of 12	2		ENSP00000379438.2	P07911-5
UMOD	ENST00000570689.5 link	c.1895C>A	p.Ser632*	stop_gained	Exon 11 of 11	5		ENSP00000460548.1	P07911-1
UMOD	ENST00000570331.1 link	n.660C>A		non_coding_transcript_exon_variant	Exon 6 of 6	5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1460964

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726692

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33460

American (AMR)

AF:

0.00

AC:

AN:

44638

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26108

East Asian (EAS)

AF:

0.00

AC:

AN:

39672

South Asian (SAS)

AF:

0.00

AC:

AN:

86030

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53376

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5604

European-Non Finnish (NFE)

AF:

9.00e-7

AC:

AN:

1111712

Other (OTH)

AF:

0.00

AC:

AN:

60364

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.35

BayesDel_noAF

Pathogenic

0.27

CADD

Pathogenic

(source)

DANN

Benign

0.95

Eigen

Benign

-0.14

Eigen_PC

Benign

-0.48

FATHMM_MKL

Benign

0.049

PhyloP100

-0.22

Vest4

0.35

GERP RS

-0.47

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

Details are displayed if max score is > 0.2

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

Publications

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16-20333342-G-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

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