17-7196492-G-C

Variant names:

• chr17-7196492-G-C
• rs17203281
• NM_001321075.3:c.1167C>G

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001321075.3(DLG4):​c.1167C>G​(p.Ile389Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 13/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I389F) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: DLG4 NM_001321075.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.74
• Publications: 50 publications found

Genes affected

DLG4 (HGNC:2903): (discs large MAGUK scaffold protein 4) This gene encodes a member of the membrane-associated guanylate kinase (MAGUK) family. It heteromultimerizes with another MAGUK protein, DLG2, and is recruited into NMDA receptor and potassium channel clusters. These two MAGUK proteins may interact at postsynaptic sites to form a multimeric scaffold for the clustering of receptors, ion channels, and associated signaling proteins. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

DLG4 Gene-Disease associations (from GenCC):

• complex neurodevelopmental disorder

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• intellectual developmental disorder 62

  Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DLG4	NM_001321075.3	c.1167C>G	p.Ile389Met	missense_variant	Exon 10 of 20	ENST00000399506.9	NP_001308004.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DLG4	ENST00000399506.9	c.1167C>G	p.Ile389Met	missense_variant	Exon 10 of 20	2	NM_001321075.3	ENSP00000382425.2
DLG4	ENST00000648172.9	c.1296C>G	p.Ile432Met	missense_variant	Exon 12 of 22			ENSP00000497806.3
DLG4	ENST00000648896.1	c.1266C>G	p.Ile422Met	missense_variant	Exon 10 of 20			ENSP00000497546.1
DLG4	ENST00000649520.1	c.987C>G	p.Ile329Met	missense_variant	Exon 9 of 19			ENSP00000497647.1
DLG4	ENST00000648263.1	c.987C>G	p.Ile329Met	missense_variant	Exon 8 of 14			ENSP00000498035.1
DLG4	ENST00000491753.2	n.1296C>G		non_coding_transcript_exon_variant	Exon 12 of 21	2		ENSP00000467897.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 39

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.16
BayesDel_addAF	Benign	-0.088	T
BayesDel_noAF	Benign	-0.36
CADD	Benign	16
DANN	Uncertain	0.99
DEOGEN2	Benign	0.41	.;.;T;T;T;.;T;.;.;.
Eigen	Benign	-0.51
Eigen_PC	Benign	-0.61
FATHMM_MKL	Benign	0.17	N
LIST_S2	Uncertain	0.88	D;D;D;.;D;D;D;D;D;D
M_CAP	Benign	0.018	T
MetaRNN	Uncertain	0.48	T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.94	T
MutationAssessor	Benign	1.3	.;.;L;.;.;.;.;.;.;.
PhyloP100		-2.7
PrimateAI	Uncertain	0.70	T
PROVEAN	Benign	-1.6	.;N;N;.;.;.;.;.;.;.
REVEL	Benign	0.18
Sift	Uncertain	0.012	.;D;D;.;.;.;.;.;.;.
Sift4G	Uncertain	0.046	.;D;D;.;.;.;.;.;.;.
Polyphen		0.90	P;.;P;.;P;.;.;.;.;.
Vest4		0.42, 0.42
MutPred		0.46		.;.;Loss of methylation at K393 (P = 0.1106);.;.;.;.;.;.;.;
MVP		0.80
MPC		2.3
ClinPred		0.69	D
GERP RS		-2.8
Varity_R		0.14
gMVP		0.70

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs17203281; hg19: chr17-7099811;