21-37427806-A-G

Position:

• chr21-37427806-A-G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001347721.2(DYRK1A):​c.10+7422A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0755 in 152,202 control chromosomes in the GnomAD database, including 644 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.075 (644 hom., cov: 32)
• Consequence: DYRK1A NM_001347721.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.290

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 -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.11 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DYRK1A	NM_001347721.2	c.10+7422A>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.10+7422A>G		intron_variant			NM_001347721.2	ENSP00000494572.1

Frequencies

GnomAD3 genomes AF: 0.0756 AC: 11493 AN: 152082 Hom.: 644 Cov.: 32

Gnomad AFR AF: 0.0189

Gnomad AMI AF: 0.184

Gnomad AMR AF: 0.0572

Gnomad ASJ AF: 0.0493

Gnomad EAS AF: 0.000385

Gnomad SAS AF: 0.0166

Gnomad FIN AF: 0.157

Gnomad MID AF: 0.0253

Gnomad NFE AF: 0.112

Gnomad OTH AF: 0.0675

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

GnomAD4 genome AF: 0.0755 AC: 11490 AN: 152202 Hom.: 644 Cov.: 32 AF XY: 0.0759 AC XY: 5650 AN XY: 74394

Gnomad4 AFR AF: 0.0188

Gnomad4 AMR AF: 0.0571

Gnomad4 ASJ AF: 0.0493

Gnomad4 EAS AF: 0.000386

Gnomad4 SAS AF: 0.0166

Gnomad4 FIN AF: 0.157

Gnomad4 NFE AF: 0.112

Gnomad4 OTH AF: 0.0667

Alfa AF: 0.0998 Hom.: 112

Bravo AF: 0.0668

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	5.9
DANN	Benign	0.57

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: rs11701483; hg19: chr21-38800108;