NM_019074.4:c.1109C>T

Variant names:

• chr15-40934986-C-T
• rs777481123
• NM_019074.4:c.1109C>T

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2 PP2 PP3_Strong

The NM_019074.4(DLL4):​c.1109C>T​(p.Pro370Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: DLL4 NM_019074.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.91

Genes affected

DLL4 (HGNC:2910): (delta like canonical Notch ligand 4) This gene is a homolog of the Drosophila delta gene. The delta gene family encodes Notch ligands that are characterized by a DSL domain, EGF repeats, and a transmembrane domain. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the DLL4 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 15 curated pathogenic missense variants (we use a threshold of 10). The gene has 12 curated benign missense variants. Gene score misZ: 2.7062 (below the threshold of 3.09). Trascript score misZ: 3.8915 (above the threshold of 3.09). GenCC associations: The gene is linked to Adams-Oliver syndrome, aplasia cutis congenita, Adams-Oliver syndrome 6.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.958

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DLL4	NM_019074.4	c.1109C>T	p.Pro370Leu	missense_variant	Exon 8 of 11	ENST00000249749.7	NP_061947.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DLL4	ENST00000249749.7	c.1109C>T	p.Pro370Leu	missense_variant	Exon 8 of 11	1	NM_019074.4	ENSP00000249749.5
DLL4	ENST00000559440.1	n.*65C>T		downstream_gene_variant		2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ExAC AF: 0.00000827 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Adams-Oliver syndrome 6 Uncertain:1

Mar 26, 2024

Genomic Medicine Center of Excellence, King Faisal Specialist Hospital and Research Centre

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.79
BayesDel_addAF	Pathogenic	0.50	D
BayesDel_noAF	Pathogenic	0.48
CADD	Pathogenic	28
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.93	D;D
Eigen	Pathogenic	1.0
Eigen_PC	Pathogenic	0.96
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.96	.;D
M_CAP	Pathogenic	0.30	D
MetaRNN	Pathogenic	0.96	D;D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	3.1	M;M
PrimateAI	Uncertain	0.69	T
PROVEAN	Pathogenic	-9.7	.;D
REVEL	Pathogenic	0.90
Sift	Uncertain	0.0020	.;D
Sift4G	Uncertain	0.0040	.;D
Polyphen		1.0	D;D
Vest4		0.89
MutPred		0.73		Loss of disorder (P = 0.0372);Loss of disorder (P = 0.0372);
MVP		0.93
MPC		1.2
ClinPred		1.0	D
GERP RS		6.0
Varity_R		0.73
gMVP		0.90

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: rs777481123; hg19: chr15-41227184;