10-100750720-C-T

Variant names:

• chr10-100750720-C-T
• rs1554856032
• NM_000278.5:c.239C>T

Variant summary

Our verdict is Pathogenic. The variant received 19 ACMG points: 19P and 0B. PM1 PM2 PM5 PP2 PP3_Strong PP5_Very_Strong

The NM_000278.5(PAX2):​c.239C>T​(p.Pro80Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P80A) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: PAX2 NM_000278.5 missense
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:4
• Conservation: PhyloP100: 7.91
• Publications: 1 publications found

Genes affected

PAX2 (HGNC:8616): (paired box 2) PAX2 encodes paired box gene 2, one of many human homologues of the Drosophila melanogaster gene prd. The central feature of this transcription factor gene family is the conserved DNA-binding paired box domain. PAX2 is believed to be a target of transcriptional supression by the tumor suppressor gene WT1. Mutations within PAX2 have been shown to result in optic nerve colobomas and renal hypoplasia. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Dec 2014]

PAX2 Gene-Disease associations (from GenCC):

• focal segmental glomerulosclerosis 7

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• renal coloboma syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, PanelApp Australia, Labcorp Genetics (formerly Invitae), G2P
• familial idiopathic steroid-resistant nephrotic syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 19 ACMG points.

• PM1: In a hotspot region, there are 10 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 8 uncertain in NM_000278.5
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr10-100750720-C-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 1077008.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 28 curated pathogenic missense variants (we use a threshold of 10). The gene has 3 curated benign missense variants. Gene score misZ: 1.4895 (below the threshold of 3.09). Trascript score misZ: 1.8687 (below the threshold of 3.09). GenCC associations: The gene is linked to familial idiopathic steroid-resistant nephrotic syndrome, renal coloboma syndrome, focal segmental glomerulosclerosis 7.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.985
• PP5: Variant 10-100750720-C-T is Pathogenic according to our data. Variant chr10-100750720-C-T is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 465775.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PAX2	NM_000278.5	c.239C>T	p.Pro80Leu	missense_variant	Exon 3 of 10	ENST00000355243.8	NP_000269.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PAX2	ENST00000355243.8	c.239C>T	p.Pro80Leu	missense_variant	Exon 3 of 10	1	NM_000278.5	ENSP00000347385.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Pathogenic:2

Mar 04, 2024

GeneDx

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Identified in patients with PAX2-related disorders referred for genetic testing at GeneDx and in published literature (PMID: 24676634, 32203253); Published functional studies suggest this variant reduces DNA binding affinity to a target promoter sequence (PMID: 24676634); Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 24676634, 32203253) -

Jan 18, 2023

Revvity Omics, Revvity

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Renal coloboma syndrome;C4014925:Focal segmental glomerulosclerosis 7 Pathogenic:2

Aug 12, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

May 29, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.59	D
BayesDel_noAF	Pathogenic	0.60
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.99	.;.;D;.;.;D
Eigen	Pathogenic	1.0
Eigen_PC	Pathogenic	0.97
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	1.0	D;D;D;D;D;D
M_CAP	Pathogenic	0.41	D
MetaRNN	Pathogenic	0.99	D;D;D;D;D;D
MetaSVM	Pathogenic	0.96	D
MutationAssessor	Pathogenic	3.9	H;H;H;.;.;.
PhyloP100		7.9
PrimateAI	Pathogenic	0.91	D
PROVEAN	Pathogenic	-8.5	D;D;D;.;D;D
REVEL	Pathogenic	0.94
Sift	Pathogenic	0.0	D;D;D;.;D;D
Sift4G	Uncertain	0.0020	D;D;D;D;D;D
Polyphen		1.0	D;D;D;.;.;D
Vest4		0.94
MutPred		0.93		Loss of disorder (P = 0.0157);Loss of disorder (P = 0.0157);Loss of disorder (P = 0.0157);.;Loss of disorder (P = 0.0157);.;
MVP		0.95
MPC		2.6
ClinPred		1.0	D
GERP RS		5.9
Varity_R		0.86
gMVP		0.98
Mutation Taster		=0/100	disease causing (ClinVar)

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: rs1554856032; hg19: chr10-102510477;