19-39825827-C-T

Position:

• chr19-39825827-C-T

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_Moderate BS2

The NM_004714.3(DYRK1B):​c.1778G>A​(p.Arg593Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000755 in 1,457,272 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: 0.0000075 (0 hom.)
• Consequence: DYRK1B NM_004714.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 1.73

Genes affected

DYRK1B (HGNC:3092): (dual specificity tyrosine phosphorylation regulated kinase 1B) This gene encodes a member of a family of nuclear-localized protein kinases. The encoded protein participates in the regulation of the cell cycle. Expression of this gene may be altered in tumor cells, and mutations in this gene were found to cause abdominal obesity-metabolic syndrome 3. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2014]

ACMG classification

Verdict is Likely_benign. Variant got -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.14835656).
• BS2: High AC in GnomAdExome4 at 11 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DYRK1B	NM_004714.3	c.1778G>A	p.Arg593Gln	missense_variant	11/11	ENST00000323039.10	NP_004705.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DYRK1B	ENST00000323039.10	c.1778G>A	p.Arg593Gln	missense_variant	11/11	1	NM_004714.3	ENSP00000312789.4

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD3 exomes AF: 0.00000436 AC: 1 AN: 229108 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 126154

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000567

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: 0.00000755 AC: 11 AN: 1457272 Hom.: 0 Cov.: 33 AF XY: 0.00000690 AC XY: 5 AN XY: 724746

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: 0.00000811

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 31

Bravo AF: 0.00000378

ExAC AF: 0.0000166 AC: 2

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 20, 2024

The c.1778G>A (p.R593Q) alteration is located in exon 11 (coding exon 10) of the DYRK1B gene. This alteration results from a G to A substitution at nucleotide position 1778, causing the arginine (R) at amino acid position 593 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 11, 2021

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site, but this prediction has not been confirmed by published transcriptional studies. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt DYRK1B protein function. This variant has not been reported in the literature in individuals with DYRK1B-related conditions. This variant is present in population databases (rs757058932, ExAC 0.04%). This sequence change replaces arginine with glutamine at codon 593 of the DYRK1B protein (p.Arg593Gln). The arginine residue is moderately conserved and there is a small physicochemical difference between arginine and glutamine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.34
BayesDel_addAF	Benign	-0.069	T
BayesDel_noAF	Benign	-0.34
CADD	Pathogenic	26
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.12	T;T;.;.;.
Eigen	Benign	-0.16
Eigen_PC	Benign	0.053
FATHMM_MKL	Benign	0.75	D
M_CAP	Uncertain	0.088	D
MetaRNN	Benign	0.15	T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.5	L;L;.;.;.
PrimateAI	Pathogenic	0.87	D
PROVEAN	Benign	-0.54	.;N;N;.;N
REVEL	Benign	0.047
Sift	Uncertain	0.0080	.;D;D;.;D
Sift4G	Benign	0.25	T;T;T;T;T
Polyphen		0.065	B;B;B;B;B
Vest4		0.31
MutPred		0.30		Loss of methylation at R593 (P = 0.0099);Loss of methylation at R593 (P = 0.0099);.;.;.;
MVP		0.57
MPC		1.4
ClinPred		0.53	D
GERP RS		5.3
Varity_R		0.12
gMVP		0.36

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: rs757058932; hg19: chr19-40316467;