16-20348594-G-T

Variant names:

• chr16-20348594-G-T
• rs1447458978
• NM_003361.4:c.707C>A

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.707C>A​(p.Pro236Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000695 in 1,439,026 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. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P236R) has been classified as Likely pathogenic.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: UMOD NM_003361.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 8.04
• Publications: 1 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 hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 7 uncertain 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 chr16-20348594-G-C is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 3255087.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 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, 0.899

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003361.4. 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
	UMOD	NM_003361.4	MANE Select	c.707C>A	p.Pro236Gln	missense	Exon 3 of 11	NP_003352.2
	UMOD	NM_001378234.1		c.707C>A	p.Pro236Gln	missense	Exon 3 of 12	NP_001365163.1
	UMOD	NM_001378235.1		c.707C>A	p.Pro236Gln	missense	Exon 3 of 12	NP_001365164.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	UMOD	ENST00000396138.9	TSL:5 MANE Select	c.707C>A	p.Pro236Gln	missense	Exon 3 of 11	ENSP00000379442.5
	UMOD	ENST00000396134.6	TSL:2	c.806C>A	p.Pro269Gln	missense	Exon 4 of 12	ENSP00000379438.2
	UMOD	ENST00000570689.5	TSL:5	c.707C>A	p.Pro236Gln	missense	Exon 3 of 11	ENSP00000460548.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.95e-7 AC: 1 AN: 1439026 Hom.: 0 Cov.: 35 AF XY: 0.00000140 AC XY: 1 AN XY: 715050

African (AFR) AF: 0.00 AC: 0 AN: 33198

American (AMR) AF: 0.00 AC: 0 AN: 42812

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25812

East Asian (EAS) AF: 0.00 AC: 0 AN: 38856

South Asian (SAS) AF: 0.00 AC: 0 AN: 84160

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 42818

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5698

European-Non Finnish (NFE) AF: 9.04e-7 AC: 1 AN: 1105906

Other (OTH) AF: 0.00 AC: 0 AN: 59766

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.80
BayesDel_addAF	Pathogenic	0.39	D
BayesDel_noAF	Pathogenic	0.32
CADD	Uncertain	24
DANN	Uncertain	0.99
Eigen	Pathogenic	0.79
Eigen_PC	Uncertain	0.65
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Uncertain	0.91	D
M_CAP	Pathogenic	0.64	D
MetaRNN	Pathogenic	0.90	D
MetaSVM	Pathogenic	0.97	D
MutationAssessor	Pathogenic	3.9	H
PhyloP100		8.0
PrimateAI	Uncertain	0.63	T
PROVEAN	Pathogenic	-5.6	D
REVEL	Pathogenic	0.89
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.015	D
Polyphen		1.0	D
Vest4		0.64
MutPred		0.67		Loss of glycosylation at P236 (P = 0.167)
MVP		0.90
MPC		1.8
ClinPred		1.0	D
GERP RS		4.6
Varity_R		0.70
gMVP		0.96
Mutation Taster		=0/100	disease causing

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

Other links and lift over

dbSNP: rs1447458978; hg19: chr16-20359916;