NM_020699.4:c.552_555delGAAA

Variant names:

• chr1-153818832-GTTTC-G
• rs1131692165
• NM_020699.4:c.552_555delGAAA

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_020699.4(GATAD2B):​c.552_555delGAAA​(p.Lys184AsnfsTer2) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 31)
• Consequence: GATAD2B NM_020699.4 frameshift
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 8.02
• Publications: 1 publications found

Genes affected

GATAD2B (HGNC:30778): (GATA zinc finger domain containing 2B) This gene encodes a zinc finger protein transcriptional repressor. The encoded protein is part of the methyl-CpG-binding protein-1 complex, which represses gene expression by deacetylating methylated nucleosomes. Mutations in this gene are linked to intellectual disability and dysmorphic features associated with cognitive disability. [provided by RefSeq, Jun 2016]

GATAD2B Gene-Disease associations (from GenCC):

• severe intellectual disability-poor language-strabismus-grimacing face-long fingers syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, G2P, Illumina, Orphanet, Labcorp Genetics (formerly Invitae)

ENSG00000291199 (HGNC:):

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 1-153818832-GTTTC-G is Pathogenic according to our data. Variant chr1-153818832-GTTTC-G is described in ClinVar as Pathogenic. ClinVar VariationId is 430625.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GATAD2B	NM_020699.4	c.552_555delGAAA	p.Lys184AsnfsTer2	frameshift_variant	Exon 4 of 11	ENST00000368655.5	NP_065750.1
GATAD2B	XM_047426115.1	c.555_558delGAAA	p.Lys185AsnfsTer2	frameshift_variant	Exon 4 of 11		XP_047282071.1
GATAD2B	XM_047426117.1	c.552_555delGAAA	p.Lys184AsnfsTer2	frameshift_variant	Exon 4 of 11		XP_047282073.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GATAD2B	ENST00000368655.5	c.552_555delGAAA	p.Lys184AsnfsTer2	frameshift_variant	Exon 4 of 11	1	NM_020699.4	ENSP00000357644.4

Frequencies

GnomAD3 genomes Cov.: 31

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

GnomAD4 genome Cov.: 31

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Severe intellectual disability-poor language-strabismus-grimacing face-long fingers syndrome Pathogenic:1

Oct 22, 2020

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		8.0
Mutation Taster		=1/199	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs1131692165; hg19: chr1-153791308;