chr16-84001919-AG-A

Position:

• chr16-84001919-AG-A

Variant summary

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

The NM_019065.3(NECAB2):​c.1132+8delG variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000821 in 1,461,438 control chromosomes in the GnomAD database, with no homozygous occurrence. 1/1 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000082 (0 hom.)
• Consequence: NECAB2 NM_019065.3 splice_region, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.127

Genes affected

NECAB2 (HGNC:23746): (N-terminal EF-hand calcium binding protein 2) The protein encoded by this gene is a neuronal calcium-binding protein that binds to and modulates the function of at least two receptors, adenosine A(2A) receptor and metabotropic glutamate receptor type 5. [provided by RefSeq, Jul 2016]

NECAB2 (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
NECAB2	NM_019065.3	c.1132+8delG		splice_region_variant, intron_variant		ENST00000305202.9	NP_061938.2
NECAB2	NM_001329748.1	c.1078+8delG		splice_region_variant, intron_variant			NP_001316677.1
NECAB2	NM_001329749.2	c.883+8delG		splice_region_variant, intron_variant			NP_001316678.1
NECAB2	XM_047434240.1	c.883+8delG		splice_region_variant, intron_variant			XP_047290196.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NECAB2	ENST00000305202.9	c.1132+8delG		splice_region_variant, intron_variant		1	NM_019065.3	ENSP00000307449.4
NECAB2	ENST00000565691.5	c.883+8delG		splice_region_variant, intron_variant		1		ENSP00000457354.1
NECAB2	ENST00000564166.1	c.157+8delG		splice_region_variant, intron_variant		3		ENSP00000455713.1
NECAB2	ENST00000681513.1	n.1537+8delG		splice_region_variant, intron_variant

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000400 AC: 1 AN: 250058 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135346

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000885

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000821 AC: 12 AN: 1461438 Hom.: 0 Cov.: 32 AF XY: 0.00000688 AC XY: 5 AN XY: 727014

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: 0.0000108

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

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: rs113413576; hg19: chr16-84035524;