10-52316420-A-C

Variant names:

• chr10-52316420-A-C
• rs61757609
• NM_012242.4:c.532A>C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_012242.4(DKK1):​c.532A>C​(p.Met178Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,818 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: DKK1 NM_012242.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.286

Genes affected

DKK1 (HGNC:2891): (dickkopf WNT signaling pathway inhibitor 1) This gene encodes a member of the dickkopf family of proteins. Members of this family are secreted proteins characterized by two cysteine-rich domains that mediate protein-protein interactions. The encoded protein binds to the LRP6 co-receptor and inhibits beta-catenin-dependent Wnt signaling. This gene plays a role in embryonic development and may be important in bone formation in adults. Elevated expression of this gene has been observed in numerous human cancers and this protein may promote proliferation, invasion and growth in cancer cell lines. [provided by RefSeq, Sep 2017]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.047418475).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DKK1	NM_012242.4	c.532A>C	p.Met178Leu	missense_variant	Exon 3 of 4	ENST00000373970.4	NP_036374.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DKK1	ENST00000373970.4	c.532A>C	p.Met178Leu	missense_variant	Exon 3 of 4	1	NM_012242.4	ENSP00000363081.3
DKK1	ENST00000467359.5	n.532A>C		non_coding_transcript_exon_variant	Exon 2 of 2	2
DKK1	ENST00000476752.1	n.181A>C		non_coding_transcript_exon_variant	Exon 2 of 3	2
DKK1	ENST00000494277.5	n.155A>C		non_coding_transcript_exon_variant	Exon 2 of 4	5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461818 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727200

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

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

Dec 04, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.532A>C (p.M178L) alteration is located in exon 3 (coding exon 3) of the DKK1 gene. This alteration results from a A to C substitution at nucleotide position 532, causing the methionine (M) at amino acid position 178 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	Benign	0.074
BayesDel_addAF	Benign	-0.28	T
BayesDel_noAF	Benign	-0.64
CADD	Benign	12
DANN	Benign	0.82
DEOGEN2	Benign	0.41	T
Eigen	Benign	-0.69
Eigen_PC	Benign	-0.61
FATHMM_MKL	Benign	0.15	N
LIST_S2	Benign	0.48	T
M_CAP	Benign	0.0051	T
MetaRNN	Benign	0.047	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.090	N
PrimateAI	Benign	0.39	T
PROVEAN	Benign	-0.80	N
REVEL	Benign	0.018
Sift	Benign	1.0	T
Sift4G	Benign	0.46	T
Polyphen		0.0	B
Vest4		0.073
MutPred		0.21		Loss of MoRF binding (P = 0.1012);
MVP		0.42
MPC		0.41
ClinPred		0.035	T
GERP RS		2.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.044
gMVP		0.33

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

LitVar

Other links and lift over

dbSNP: rs61757609; hg19: chr10-54076180;