Genetic Variant DLL3:c.1674-10C>T (chr19-39507820-C-T) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_203486.3(DLL3):c.1674-10C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00158 in 1,614,092 control chromosomes in the GnomAD database, including 29 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0087 ( 14 hom., cov: 32)

Exomes 𝑓: 0.00083 ( 15 hom. )

Consequence

DLL3
NM_203486.3 intron

Scores

Splicing: ADA: 0.00004291

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: 0.0410

Publications

0 publications found

Variant links:

Genes affected

DLL3 (HGNC:2909): (delta like canonical Notch ligand 3) This gene encodes a member of the delta protein ligand family. This family functions as Notch ligands that are characterized by a DSL domain, EGF repeats, and a transmembrane domain. Mutations in this gene cause autosomal recessive spondylocostal dysostosis 1. Two transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

DLL3 Gene-Disease associations (from GenCC):

spondylocostal dysostosis 1, autosomal recessive
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
autosomal recessive spondylocostal dysostosis
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

DLL3 links:

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ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.55).

BP6

Variant 19-39507820-C-T is Benign according to our data. Variant chr19-39507820-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 260777.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00873 (1329/152260) while in subpopulation AFR AF = 0.0291 (1207/41532). AF 95% confidence interval is 0.0277. There are 14 homozygotes in GnomAd4. There are 614 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 14 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_203486.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DLL3	NM_203486.3	MANE Select	c.1674-10C>T		intron	N/A	NP_982353.1	Q9NYJ7-2
	DLL3	NM_016941.4		c.1674-10C>T		intron	N/A	NP_058637.1	Q9NYJ7-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
DLL3	ENST00000356433.10	TSL:2 MANE Select	c.1674-10C>T	intron	N/A	ENSP00000348810.4	Q9NYJ7-2
DLL3	ENST00000205143.4	TSL:1	c.1674-10C>T	intron	N/A	ENSP00000205143.3	Q9NYJ7-1
DLL3	ENST00000913807.1		c.1662-10C>T	intron	N/A	ENSP00000583866.1

Frequencies

GnomAD3 genomes

AF:

0.00874

AC:

1329

AN:

152142

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0291

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00649

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00717

GnomAD2 exomes

AF:

0.00226

AC:

567

AN:

251310

AF XY:

0.00154

show subpopulations

Gnomad AFR exome

AF:

0.0291

Gnomad AMR exome

AF:

0.00194

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000176

Gnomad OTH exome

AF:

0.000814

GnomAD4 exome

AF:

0.000834

AC:

1219

AN:

1461832

Hom.:

Cov.:

AF XY:

0.000721

AC XY:

524

AN XY:

727212

show subpopulations

African (AFR)

AF:

0.0274

AC:

917

AN:

33478

American (AMR)

AF:

0.00208

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000104

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53406

Middle Eastern (MID)

AF:

0.00139

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000737

AC:

AN:

1111974

Other (OTH)

AF:

0.00180

AC:

109

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.468

Heterozygous variant carriers

143

214

286

357

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

120

150

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00873

AC:

1329

AN:

152260

Hom.:

Cov.:

AF XY:

0.00825

AC XY:

614

AN XY:

74466

show subpopulations

African (AFR)

AF:

0.0291

AC:

1207

AN:

41532

American (AMR)

AF:

0.00648

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.000207

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000103

AC:

AN:

68024

Other (OTH)

AF:

0.00710

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

139

208

278

347

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00721

Hom.:

Bravo

AF:

0.0103

Asia WGS

AF:

0.00115

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (2)

Spondylocostal dysostosis 1, autosomal recessive (2)

not provided (1)

Syndactyly (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.55

CADD

Benign

6.4

(source)

DANN

Benign

0.58

PhyloP100

0.041

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000043

dbscSNV1_RF

Benign

0.0020

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over