20-18390438-T-C

Variant summary

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

The NM_001367614.1(DZANK1):c.1906A>G(p.Lys636Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,620 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: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: DZANK1 NM_001367614.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.18

Genes affected

DZANK1 (HGNC:15858): (double zinc ribbon and ankyrin repeat domains 1) This gene contains two ankyrin repeat-encoding regions. Ankyrin repeats are tandemly repeated modules of about 33 amino acids described as L-shaped structures consisting of a beta-hairpin and two alpha-helices. Ankyrin repeats occur in a large number of functionally diverse proteins, mainly from eukaryotes, and are known to function as protein-protein interaction domains. [provided by RefSeq, Dec 2018]

LOC124904877 (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=0.13456321).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DZANK1	NM_001367614.1	c.1906A>G	p.Lys636Glu	missense_variant	18/21	ENST00000699568.1
LOC124904877	XR_007067546.1	n.195+420T>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DZANK1	ENST00000699568.1	c.1906A>G	p.Lys636Glu	missense_variant	18/21		NM_001367614.1	P2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000401 AC: 1 AN: 249258 Hom.: 0 AF XY: 0.00000740 AC XY: 1 AN XY: 135224

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000556

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461620 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727104

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

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.: 32

ExAC AF: 0.00000827 AC: 1

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

Feb 13, 2023

The c.1831A>G (p.K611E) alteration is located in exon 18 (coding exon 17) of the DZANK1 gene. This alteration results from a A to G substitution at nucleotide position 1831, causing the lysine (K) at amino acid position 611 to be replaced by a glutamic acid (E). 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	0.076
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.28
Cadd	Benign	16
Dann	Uncertain	0.99
DEOGEN2	Benign	0.0054	T;T;T;.
Eigen	Benign	-0.14
Eigen_PC	Benign	-0.16
FATHMM_MKL	Benign	0.70	D
LIST_S2	Benign	0.68	T;T;.;T
M_CAP	Benign	0.014	T
MetaRNN	Benign	0.13	T;T;T;T
MetaSVM	Benign	-0.93	T
MutationAssessor	Benign	1.9	L;.;L;.
MutationTaster	Benign	0.72	N;N;N;N
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-1.5	N;.;.;.
REVEL	Benign	0.13
Sift	Benign	0.23	T;.;.;.
Sift4G	Benign	0.16	T;T;T;T
Polyphen		0.043	B;.;B;.
Vest4		0.092
MutPred		0.36		Loss of ubiquitination at K611 (P = 0.0092);.;Loss of ubiquitination at K611 (P = 0.0092);.;
MVP		0.40
MPC		0.052
ClinPred		0.11	T
GERP RS		1.7
Varity_R		0.096
gMVP		0.30

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: rs751319759; hg19: chr20-18371082;