chr20-50893490-CTT-C

Variant names:

• chr20-50893490-CTT-C
• rs1555810376
• NM_001282531.3:c.1222_1223delAA

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_001282531.3(ADNP):​c.1222_1223delAA​(p.Lys408ValfsTer31) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ADNP NM_001282531.3 frameshift
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 3.47
• Publications: 2 publications found

Genes affected

ADNP (HGNC:15766): (activity dependent neuroprotector homeobox) Vasoactive intestinal peptide is a neuroprotective factor that has a stimulatory effect on the growth of some tumor cells and an inhibitory effect on others. This gene encodes a protein that is upregulated by vasoactive intestinal peptide and may be involved in its stimulatory effect on certain tumor cells. The encoded protein contains one homeobox and nine zinc finger domains, suggesting that it functions as a transcription factor. This gene is also upregulated in normal proliferative tissues. Finally, the encoded protein may increase the viability of certain cell types through modulation of p53 activity. Alternatively spliced transcript variants encoding the same protein have been described. [provided by RefSeq, Jul 2008]

ADNP Gene-Disease associations (from GenCC):

• ADNP-related multiple congenital anomalies - intellectual disability - autism spectrum disorder

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

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 99 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 20-50893490-CTT-C is Pathogenic according to our data. Variant chr20-50893490-CTT-C is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 190279.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001282531.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ADNP	NM_001282531.3	MANE Select	c.1222_1223delAA	p.Lys408ValfsTer31	frameshift	Exon 6 of 6	NP_001269460.1	Q9H2P0
	ADNP	NM_001439000.1		c.1438_1439delAA	p.Lys480ValfsTer31	frameshift	Exon 6 of 6	NP_001425929.1
	ADNP	NM_001282532.2		c.1222_1223delAA	p.Lys408ValfsTer31	frameshift	Exon 4 of 4	NP_001269461.1	Q9H2P0

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ADNP	ENST00000621696.5	TSL:5 MANE Select	c.1222_1223delAA	p.Lys408ValfsTer31	frameshift	Exon 6 of 6	ENSP00000483881.1	Q9H2P0
	ADNP	ENST00000349014.8	TSL:1	c.1222_1223delAA	p.Lys408ValfsTer31	frameshift	Exon 4 of 4	ENSP00000342905.3	Q9H2P0
	ADNP	ENST00000371602.9	TSL:1	c.1222_1223delAA	p.Lys408ValfsTer31	frameshift	Exon 3 of 3	ENSP00000360662.2	Q9H2P0

Frequencies

GnomAD3 genomes Cov.: 32

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

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Likely pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
2	-	-	ADNP-related multiple congenital anomalies - intellectual disability - autism spectrum disorder (2)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.5
Mutation Taster		=0/200	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: rs1555810376; hg19: chr20-49510027;