chr1-117959358-G-C

Position:

• chr1-117959358-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_006784.3(WDR3):​c.2743G>C​(p.Val915Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000409 in 1,613,998 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000043 (0 hom.)
• Consequence: WDR3 NM_006784.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.61

Genes affected

WDR3 (HGNC:12755): (WD repeat domain 3) This gene encodes a nuclear protein containing 10 WD repeats. WD repeats are approximately 30- to 40-amino acid domains containing several conserved residues, which usually include a trp-asp at the C-terminal end. Proteins belonging to the WD repeat family are involved in a variety of cellular processes, including cell cycle progression, signal transduction, apoptosis, and gene regulation. [provided by RefSeq, Jul 2008]

SPAG17 (HGNC:26620): (sperm associated antigen 17) This gene encodes a central pair protein present in the axonemes of cells with a "9 + 2" organization of microtubules. The encoded protein is required for the proper function of the axoneme. Mutations in the orthologous gene in mice lead to primary ciliary dyskinesia characterized by immotile nasal and tracheal cilia, reduced clearance of nasal mucus, profound respiratory distress, hydrocephalus, and neonatal lethality within twelve hours of birth due to impaired airway mucociliary clearance. Single-nucleotide polymorphisms in this gene are associated with human height and targeted mutations lead to skeletal malformations affecting the limbs in mice, suggesting a role for this gene in skeletal development. [provided by RefSeq, Feb 2017]

SPAG17 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.08834326).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
WDR3	NM_006784.3	c.2743G>C	p.Val915Leu	missense_variant	27/27	ENST00000349139.6	NP_006775.1
SPAG17	NM_206996.4	c.6672+4441C>G		intron_variant		ENST00000336338.10	NP_996879.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
WDR3	ENST00000349139.6	c.2743G>C	p.Val915Leu	missense_variant	27/27	1	NM_006784.3	ENSP00000308179.4
SPAG17	ENST00000336338.10	c.6672+4441C>G		intron_variant		1	NM_206996.4	ENSP00000337804.5

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152156 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000441

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000121 AC: 3 AN: 248740 Hom.: 0 AF XY: 0.0000149 AC XY: 2 AN XY: 134662

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000270

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000431 AC: 63 AN: 1461724 Hom.: 0 Cov.: 31 AF XY: 0.0000468 AC XY: 34 AN XY: 727154

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000549

Gnomad4 OTH exome AF: 0.0000331

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152274 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74442

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000441

Gnomad4 OTH AF: 0.00

Bravo AF: 0.0000227

ExAC AF: 0.0000165 AC: 2

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 31, 2024

The c.2743G>C (p.V915L) alteration is located in exon 27 (coding exon 26) of the WDR3 gene. This alteration results from a G to C substitution at nucleotide position 2743, causing the valine (V) at amino acid position 915 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.57
BayesDel_addAF	Benign	-0.099	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.032	T
Eigen	Benign	-0.11
Eigen_PC	Benign	0.044
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.92	D
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.088	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.5	M
PrimateAI	Uncertain	0.50	T
PROVEAN	Benign	-1.8	N
REVEL	Benign	0.097
Sift	Benign	0.079	T
Sift4G	Uncertain	0.050	T
Polyphen		0.51	P
Vest4		0.27
MVP		0.50
MPC		0.14
ClinPred		0.45	T
GERP RS		3.8
Varity_R		0.093
gMVP		0.48

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs201509498; hg19: chr1-118501981;