Genetic Variant NM_025132.4:c.3183+16A>T (chr4-39257570-A-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_025132.4(WDR19):c.3183+16A>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000709 in 1,410,838 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 7.1e-7 ( 0 hom. )

Consequence

WDR19
NM_025132.4 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.552

Publications

7 publications found

Variant links:

Genes affected

WDR19 (HGNC:18340): (WD repeat domain 19) The protein encoded by this gene is a member of the WD (tryptophan-aspartic acid) repeat family, which is a large family of structurally-related proteins known to participate in a wide range of cellular processes. Each WD repeat typically contains about 40 amino acids that are usually bracketed by glycine-histidine and tryptophan-aspartic acid (WD) dipeptides. This protein contains six WD repeats, three transmembrane domains, and a clathrin heavy-chain repeat. Mutations in this gene have been described in individuals with a wide range of disorders affecting function of the cilium. These disorders are known as ciliopathies, and include Jeune syndrome, Sensenbrenner syndromes, Senior-Loken syndrome, combined or isolated nephronophthisis (NPHP), and retinitis pigmentosa (RP). Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Dec 2015]

WDR19 Gene-Disease associations (from GenCC):

asphyxiating thoracic dystrophy 5
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
ciliopathy
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
cranioectodermal dysplasia 4
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
nephronophthisis 13
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
Senior-Loken syndrome 8
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
cranioectodermal dysplasia
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Jeune syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
nephronophthisis 1
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Senior-Loken syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

WDR19 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.85).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
WDR19	NM_025132.4 link	c.3183+16A>T		intron_variant	Intron 28 of 36	ENST00000399820.8	NP_079408.3	Q8NEZ3-1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
WDR19	ENST00000399820.8 link	c.3183+16A>T	intron_variant	Intron 28 of 36	1	NM_025132.4	ENSP00000382717.3	Q8NEZ3-1
WDR19	ENST00000506869.5 link	n.*2764+16A>T	intron_variant	Intron 27 of 35	2		ENSP00000424319.1	D6RBA0
WDR19	ENST00000512095.5 link	n.2181+16A>T	intron_variant	Intron 18 of 22	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.09e-7

AC:

AN:

1410838

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

696932

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

32078

American (AMR)

AF:

0.00

AC:

AN:

36864

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25314

East Asian (EAS)

AF:

0.0000263

AC:

AN:

37952

South Asian (SAS)

AF:

0.00

AC:

AN:

78280

European-Finnish (FIN)

AF:

0.00

AC:

AN:

50374

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5598

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1085912

Other (OTH)

AF:

0.00

AC:

AN:

58466

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

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_noAF

Benign

-0.85

CADD

Benign

0.070

(source)

DANN

Benign

0.31

PhyloP100

-0.55

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over