chr12-57727427-C-A

Position:

• chr12-57727427-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001122772.3(AGAP2):​c.3013G>T​(p.Asp1005Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,326 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: AGAP2 NM_001122772.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.32

Genes affected

AGAP2 (HGNC:16921): (ArfGAP with GTPase domain, ankyrin repeat and PH domain 2) The protein encoded by this gene belongs to the centaurin gamma-like family. It mediates anti-apoptotic effects of nerve growth factor by activating nuclear phosphoinositide 3-kinase. It is overexpressed in cancer cells, and promotes cancer cell invasion. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Aug 2011]

AGAP2-AS1 (HGNC:48633): (AGAP2 antisense RNA 1) Biomarker of lung non-small cell carcinoma; malignant astrocytoma; and stomach cancer. [provided by Alliance of Genome Resources, Apr 2022]

OS9 (HGNC:16994): (OS9 endoplasmic reticulum lectin) This gene encodes a protein that is highly expressed in osteosarcomas. This protein binds to the hypoxia-inducible factor 1 (HIF-1), a key regulator of the hypoxic response and angiogenesis, and promotes the degradation of one of its subunits. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.38375652).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
AGAP2	NM_001122772.3	c.3013G>T	p.Asp1005Tyr	missense_variant	17/19	ENST00000547588.6	NP_001116244.1
AGAP2-AS1	NR_027032.1	n.602C>A		non_coding_transcript_exon_variant	2/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
AGAP2	ENST00000547588.6	c.3013G>T	p.Asp1005Tyr	missense_variant	17/19	1	NM_001122772.3	ENSP00000449241	P3
AGAP2-AS1	ENST00000542466.2	n.571C>A		non_coding_transcript_exon_variant	2/2	1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461326 Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1 AN XY: 726982

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 16, 2021

The c.3013G>T (p.D1005Y) alteration is located in exon 17 (coding exon 17) of the AGAP2 gene. This alteration results from a G to T substitution at nucleotide position 3013, causing the aspartic acid (D) at amino acid position 1005 to be replaced by a tyrosine (Y). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.038	T
BayesDel_noAF	Benign	-0.29
CADD	Pathogenic	26
DANN	Uncertain	0.99
Eigen	Uncertain	0.43
Eigen_PC	Uncertain	0.49
FATHMM_MKL	Benign	0.67	D
LIST_S2	Uncertain	0.91	D;D
M_CAP	Benign	0.031	D
MetaRNN	Benign	0.38	T;T
MetaSVM	Benign	-0.51	T
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.63	T
PROVEAN	Uncertain	-2.5	D;N
REVEL	Benign	0.16
Sift	Uncertain	0.027	D;D
Sift4G	Uncertain	0.030	D;D
Polyphen		0.29	B;P
Vest4		0.47
MutPred		0.59		.;Gain of loop (P = 0.002);
MVP		0.47
MPC		2.5
ClinPred		0.92	D
GERP RS		5.0
gMVP		0.83

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr12-58121210;