16-50548732-G-A

Position:

• chr16-50548732-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The ENST00000268459.6(NKD1):​c.41G>A​(p.Arg14His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000154 in 1,294,676 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000015 (0 hom.)
• Consequence: NKD1 ENST00000268459.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.56

Genes affected

NKD1 (HGNC:17045): (NKD inhibitor of WNT signaling pathway 1) In the mouse, Nkd is a Dishevelled (see DVL1; MIM 601365)-binding protein that functions as a negative regulator of the Wnt (see WNT1; MIM 164820)-beta-catenin (see MIM 116806)-Tcf (see MIM 602272) signaling pathway.[supplied by OMIM, Jun 2003]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.37017748).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NKD1	NM_033119.5	c.41G>A	p.Arg14His	missense_variant	2/10	ENST00000268459.6	NP_149110.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NKD1	ENST00000268459.6	c.41G>A	p.Arg14His	missense_variant	2/10	1	NM_033119.5	ENSP00000268459	P1
NKD1	ENST00000564336.1	n.199G>A		non_coding_transcript_exon_variant	2/5	3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000154 AC: 2 AN: 1294676 Hom.: 0 Cov.: 33 AF XY: 0.00000313 AC XY: 2 AN XY: 637978

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: 0.0000294

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

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

Sep 13, 2023

The c.41G>A (p.R14H) alteration is located in exon 2 (coding exon 2) of the NKD1 gene. This alteration results from a G to A substitution at nucleotide position 41, causing the arginine (R) at amino acid position 14 to be replaced by a histidine (H). 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	Uncertain	0.55
BayesDel_addAF	Benign	-0.042	T
BayesDel_noAF	Benign	-0.30
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Benign	0.34	T
Eigen	Uncertain	0.26
Eigen_PC	Benign	0.19
FATHMM_MKL	Benign	0.71	D
LIST_S2	Uncertain	0.89	D
M_CAP	Pathogenic	0.93	D
MetaRNN	Benign	0.37	T
MetaSVM	Benign	-0.65	T
MutationAssessor	Uncertain	2.0	M
MutationTaster	Benign	0.95	N
PrimateAI	Pathogenic	0.91	D
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.16
Sift	Uncertain	0.023	D
Sift4G	Benign	0.084	T
Polyphen		1.0	D
Vest4		0.18
MutPred		0.23		Gain of ubiquitination at K13 (P = 0.0314);
MVP		0.10
MPC		0.67
ClinPred		0.94	D
GERP RS		2.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.21
gMVP		0.31

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs1181632819; hg19: chr16-50582643;