22-50697269-TG-TGGGGGGG

Position:

• chr22-50697269-TG-TGGGGGGG

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001372044.2(SHANK3):​c.1528-285_1528-280dupGGGGGG variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000282 in 106,312 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 29)
  • Exomes 𝑓: 0.000028 (0 hom.)
• Consequence: SHANK3 NM_001372044.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.94

Genes affected

SHANK3 (HGNC:14294): (SH3 and multiple ankyrin repeat domains 3) This gene is a member of the Shank gene family. Shank proteins are multidomain scaffold proteins of the postsynaptic density that connect neurotransmitter receptors, ion channels, and other membrane proteins to the actin cytoskeleton and G-protein-coupled signaling pathways. Shank proteins also play a role in synapse formation and dendritic spine maturation. Mutations in this gene are a cause of autism spectrum disorder (ASD), which is characterized by impairments in social interaction and communication, and restricted behavioral patterns and interests. Mutations in this gene also cause schizophrenia type 15, and are a major causative factor in the neurological symptoms of 22q13.3 deletion syndrome, which is also known as Phelan-McDermid syndrome. Additional isoforms have been described for this gene but they have not yet been experimentally verified. [provided by RefSeq, Mar 2012]

SHANK3 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SHANK3	NM_001372044.2	c.1528-285_1528-280dupGGGGGG		intron_variant			NP_001358973.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SHANK3	ENST00000262795.7	c.948-292_948-287dupGGGGGG		intron_variant		5		ENSP00000489147.3
SHANK3	ENST00000414786.7	n.1532-292_1532-287dupGGGGGG		intron_variant		5
SHANK3	ENST00000673971.2	n.1305-292_1305-287dupGGGGGG		intron_variant				ENSP00000501192.2

Frequencies

GnomAD3 genomes Cov.: 29

GnomAD4 exome AF: 0.0000282 AC: 3 AN: 106312 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 54056

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000302

Gnomad4 OTH exome AF: 0.000145

GnomAD4 genome Cov.: 29

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr22-51135697;