Genetic Variant BSN:p.Gln2463_Leu2466del (chr3-49656921-CCAGCAGCTGCAG-C) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM4PP3

The NM_003458.4(BSN):c.7386_7397delGCAGCAGCAGCT(p.Gln2463_Leu2466del) variant causes a disruptive inframe deletion change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000193 in 1,598,630 control chromosomes in the GnomAD database, including 1 homozygotes. It is difficult to determine the true allele frequency of this variant because it is of type DEL_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. Variant has been reported in ClinVar as Uncertain significance (no stars).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00020 ( 1 hom. )

Consequence

BSN
NM_003458.4 disruptive_inframe_deletion

Scores

Not classified

Clinical Significance

Uncertain significance no assertion criteria provided U:1

Conservation

PhyloP100: 7.80

Publications

1 publications found

Variant links:

Genes affected

BSN (HGNC:1117): (bassoon presynaptic cytomatrix protein) Neurotransmitters are released from a specific site in the axon terminal called the active zone, which is composed of synaptic vesicles and a meshwork of cytoskeleton underlying the plasma membrane. The protein encoded by this gene is thought to be a scaffolding protein involved in organizing the presynaptic cytoskeleton. The gene is expressed primarily in neurons in the brain. A similar gene product in rodents is concentrated in the active zone of axon terminals and tightly associated with cytoskeletal structures, and is essential for regulating neurotransmitter release from a subset of synapses. [provided by RefSeq, Jul 2008]

BSN Gene-Disease associations (from GenCC):

epilepsy
Inheritance: AR, AD Classification: LIMITED Submitted by: G2P

BSN links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM4

Nonframeshift variant in NON repetitive region in NM_003458.4.

PP3

No computational evidence supports a deleterious effect, but strongly conserved according to phyloP

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BSN	NM_003458.4 link	c.7386_7397delGCAGCAGCAGCT	p.Gln2463_Leu2466del	disruptive_inframe_deletion	Exon 5 of 12	ENST00000296452.5	NP_003449.2	Q9UPA5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BSN	ENST00000296452.5 link	c.7386_7397delGCAGCAGCAGCT	p.Gln2463_Leu2466del	disruptive_inframe_deletion	Exon 5 of 12	1	NM_003458.4	ENSP00000296452.4		Q9UPA5

Frequencies

GnomAD3 genomes

AF:

0.000158

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000176

AC:

AN:

221864

AF XY:

0.000164

show subpopulations

Gnomad AFR exome

AF:

0.000309

Gnomad AMR exome

AF:

0.000374

Gnomad ASJ exome

AF:

0.000106

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000197

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000197

AC:

285

AN:

1446304

Hom.:

AF XY:

0.000188

AC XY:

135

AN XY:

717904

show subpopulations

African (AFR)

AF:

0.000151

AC:

AN:

33082

American (AMR)

AF:

0.000280

AC:

AN:

42788

Ashkenazi Jewish (ASJ)

AF:

0.0000774

AC:

AN:

25856

East Asian (EAS)

AF:

0.0000255

AC:

AN:

39176

South Asian (SAS)

AF:

0.000177

AC:

AN:

84974

European-Finnish (FIN)

AF:

0.0000195

AC:

AN:

51398

Middle Eastern (MID)

AF:

0.000175

AC:

AN:

5726

European-Non Finnish (NFE)

AF:

0.000208

AC:

230

AN:

1103610

Other (OTH)

AF:

0.000302

AC:

AN:

59694

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.511

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<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:

0.000158

AC:

AN:

152326

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74480

show subpopulations

African (AFR)

AF:

0.000144

AC:

AN:

41582

American (AMR)

AF:

0.000196

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.000414

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.0000942

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000162

AC:

AN:

68032

Other (OTH)

AF:

0.000473

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.000109

Hom.:

Bravo

AF:

0.000155

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

Oromandibular-limb hypogenesis spectrum

Uncertain:1

Aug 12, 2016

CHU Sainte-Justine Research Center, University of Montreal

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:research

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

7.8

Mutation Taster

=135/65

disease causing (fs/PTC)

(source)

Splicing

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over