chr21-37418586-A-G

Position:

• chr21-37418586-A-G

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_001347721.2(DYRK1A):​c.-76-1713A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00152 in 152,332 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Genomes: 𝑓 0.0015 (1 hom., cov: 32)
• Consequence: DYRK1A NM_001347721.2 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.279

Genes affected

DYRK1A (HGNC:3091): (dual specificity tyrosine phosphorylation regulated kinase 1A) This gene encodes a member of the Dual-specificity tyrosine phosphorylation-regulated kinase (DYRK) family. This member contains a nuclear targeting signal sequence, a protein kinase domain, a leucine zipper motif, and a highly conservative 13-consecutive-histidine repeat. It catalyzes its autophosphorylation on serine/threonine and tyrosine residues. It may play a significant role in a signaling pathway regulating cell proliferation and may be involved in brain development. This gene is a homolog of Drosophila mnb (minibrain) gene and rat Dyrk gene. It is localized in the Down syndrome critical region of chromosome 21, and is considered to be a strong candidate gene for learning defects associated with Down syndrome. Alternative splicing of this gene generates several transcript variants differing from each other either in the 5' UTR or in the 3' coding region. These variants encode at least five different isoforms. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 21-37418586-A-G is Benign according to our data. Variant chr21-37418586-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 1213099.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.00152 (231/152332) while in subpopulation AMR AF= 0.00203 (31/15286). AF 95% confidence interval is 0.00147. There are 1 homozygotes in gnomad4. There are 135 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 231 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DYRK1A	NM_001347721.2	c.-76-1713A>G		intron_variant		ENST00000647188.2	NP_001334650.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DYRK1A	ENST00000647188.2	c.-76-1713A>G		intron_variant			NM_001347721.2	ENSP00000494572.1

Frequencies

GnomAD3 genomes AF: 0.00152 AC: 232 AN: 152214 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.000434

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00203

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00725

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.00151

Gnomad OTH AF: 0.000955

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.00152 AC: 231 AN: 152332 Hom.: 1 Cov.: 32 AF XY: 0.00181 AC XY: 135 AN XY: 74478

Gnomad4 AFR AF: 0.000433

Gnomad4 AMR AF: 0.00203

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00725

Gnomad4 NFE AF: 0.00151

Gnomad4 OTH AF: 0.000945

Alfa AF: 0.00148 Hom.: 0

Bravo AF: 0.00103

Asia WGS AF: 0.000289 AC: 1 AN: 3472

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Nov 06, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	4.6
DANN	Benign	0.71

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs144634707; hg19: chr21-38790888;