Genetic Variant DLGAP1:p.Cys751Phe (chr18-3534421-C-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_004746.4(DLGAP1):c.2252G>T(p.Cys751Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,614,064 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000099 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

DLGAP1
NM_004746.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.57

Variant links:

Genes affected

DLGAP1 (HGNC:2905): (DLG associated protein 1) Predicted to enable molecular adaptor activity. Predicted to be a structural constituent of postsynaptic density. Predicted to be involved in several processes, including aggresome assembly; regulation of postsynaptic neurotransmitter receptor activity; and regulation of proteasomal protein catabolic process. Predicted to be located in plasma membrane. Predicted to be part of postsynaptic density. Predicted to be active in glutamatergic synapse and postsynaptic density, intracellular component. [provided by Alliance of Genome Resources, Apr 2022]

DLGAP1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAd4 at 15 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DLGAP1	NM_004746.4 link	c.2252G>T	p.Cys751Phe	missense_variant	Exon 10 of 13	ENST00000315677.8	NP_004737.2	O14490-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DLGAP1	ENST00000315677.8 link	c.2252G>T	p.Cys751Phe	missense_variant	Exon 10 of 13	5	NM_004746.4	ENSP00000316377.3		O14490-1

Frequencies

GnomAD3 genomes

AF:

0.0000986

AC:

AN:

152178

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000720

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000955

GnomAD3 exomes

AF:

0.0000119

AC:

AN:

251376

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135872

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

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:

0.00

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.00000410

AC:

AN:

1461886

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

727242

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000894

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:

0.0000331

GnomAD4 genome

AF:

0.0000986

AC:

AN:

152178

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74326

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000720

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000955

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.000189

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 14, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2252G>T (p.C751F) alteration is located in exon 10 (coding exon 7) of the DLGAP1 gene. This alteration results from a G to T substitution at nucleotide position 2252, causing the cysteine (C) at amino acid position 751 to be replaced by a phenylalanine (F). 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

0.20

BayesDel_addAF

Uncertain

0.051

BayesDel_noAF

Uncertain

0.010

CADD

Pathogenic

DANN

Benign

0.94

DEOGEN2

Benign

0.061

.;.;.;.;T;T;.;.;.;.;.

Eigen

Uncertain

0.30

Eigen_PC

Uncertain

0.44

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.94

D;D;.;D;D;D;D;D;D;D;D

M_CAP

Benign

0.031

MetaRNN

Uncertain

0.74

D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

.;.;.;.;.;L;.;.;.;.;L

PrimateAI

Pathogenic

0.84

PROVEAN

Uncertain

-3.0

D;D;D;D;.;D;D;D;.;D;.

REVEL

Uncertain

0.41

Sift

Benign

1.0

T;T;T;T;.;T;T;T;.;T;.

Sift4G

Benign

0.87

T;T;T;T;T;T;T;T;T;T;T

Polyphen

0.15

B;.;.;.;.;P;.;.;.;D;.

Vest4

0.90

MutPred

0.56

.;.;.;.;.;Gain of sheet (P = 0.0344);.;.;.;.;Gain of sheet (P = 0.0344);

MVP

0.60

MPC

2.5

ClinPred

0.83

GERP RS

5.7

Varity_R

0.43

gMVP

0.81

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over