chr8-1549036-C-A

Position:

• chr8-1549036-C-A

Variant summary

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

The NM_001346810.2(DLGAP2):​c.583C>A​(p.Gln195Lys) variant causes a missense 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 Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: DLGAP2 NM_001346810.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.49

Genes affected

DLGAP2 (HGNC:2906): (DLG associated protein 2) The product of this gene is a membrane-associated protein that may play a role in synapse organization and signalling in neuronal cells. This gene is biallelically expressed in the brain, however, only the paternal allele is expressed in the testis (PMID:18055845). Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jun 2014]

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	UniProt
DLGAP2	NM_001346810.2	c.583C>A	p.Gln195Lys	missense_variant	5/15	ENST00000637795.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DLGAP2	ENST00000637795.2	c.583C>A	p.Gln195Lys	missense_variant	5/15	5	NM_001346810.2
DLGAP2	ENST00000520901.5	c.394C>A	p.Gln132Lys	missense_variant	1/10	1
DLGAP2	ENST00000421627.7	c.580C>A	p.Gln194Lys	missense_variant	5/15	5
DLGAP2	ENST00000612087.1	c.343C>A	p.Gln115Lys	missense_variant	2/11	5		P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1442812 Hom.: 0 Cov.: 35 AF XY: 0.00 AC XY: 0 AN XY: 717480

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: 0.00

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

Jun 17, 2024

The c.343C>A (p.Q115K) alteration is located in exon 2 (coding exon 1) of the DLGAP2 gene. This alteration results from a C to A substitution at nucleotide position 343, causing the glutamine (Q) at amino acid position 115 to be replaced by a lysine (K). 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
AlphaMissense	Benign	0.33
BayesDel_addAF	Pathogenic	0.21	D
BayesDel_noAF	Uncertain	0.060
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Benign	0.24	T;T;T
Eigen	Pathogenic	0.83
Eigen_PC	Pathogenic	0.82
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.96	D;D;D
M_CAP	Benign	0.0070	T
MetaRNN	Uncertain	0.73	D;D;D
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.6	.;M;.
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.60	T
REVEL	Uncertain	0.41
Sift4G	Uncertain	0.039	.;.;D
Polyphen		1.0	.;D;.
Vest4		0.96
MutPred		0.54		.;Loss of helix (P = 3e-04);.;
MVP		0.63
MPC		0.57
ClinPred		0.98	D
GERP RS		5.6
Varity_R		0.43
gMVP		0.67

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: chr8-1497202;