Genetic Variant BICD2:p.Glu848Lys (chr9-92715180-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_001003800.2(BICD2):c.2542G>A(p.Glu848Lys) variant causes a missense change. The variant allele was found at a frequency of 0.00000749 in 1,602,160 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. E848E) has been classified as Benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000069 ( 0 hom. )

Consequence

BICD2
NM_001003800.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.08

Publications

3 publications found

Variant links:

Genes affected

BICD2 (HGNC:17208): (BICD cargo adaptor 2) This gene is one of two human homologs of Drosophila bicaudal-D and a member of the Bicoid family. It has been implicated in dynein-mediated, minus end-directed motility along microtubules. It has also been reported to be a phosphorylation target of NIMA related kinase 8. Two alternative splice variants have been described. [provided by RefSeq, Jul 2008]

BICD2 Gene-Disease associations (from GenCC):

autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Genomics England PanelApp, G2P, Labcorp Genetics (formerly Invitae)

BICD2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.15441489).

BS2

High AC in GnomAdExome4 at 10 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001003800.2. 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
	BICD2	NM_001003800.2	MANE Select	c.2542G>A	p.Glu848Lys	missense	Exon 7 of 7	NP_001003800.1	Q8TD16-2
	BICD2	NM_015250.4		c.2469+73G>A		intron	N/A	NP_056065.1	Q8TD16-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BICD2	ENST00000356884.11	TSL:1 MANE Select	c.2542G>A	p.Glu848Lys	missense	Exon 7 of 7	ENSP00000349351.6	Q8TD16-2
	BICD2	ENST00000375512.3	TSL:1	c.2469+73G>A		intron	N/A	ENSP00000364662.3	Q8TD16-1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152262

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000244

AC:

AN:

246242

AF XY:

0.0000375

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000901

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000690

AC:

AN:

1449898

Hom.:

Cov.:

AF XY:

0.00000973

AC XY:

AN XY:

719290

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33258

American (AMR)

AF:

0.00

AC:

AN:

44220

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25726

East Asian (EAS)

AF:

0.00

AC:

AN:

39408

South Asian (SAS)

AF:

0.0000586

AC:

AN:

85390

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52482

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5442

European-Non Finnish (NFE)

AF:

0.00000453

AC:

AN:

1104210

Other (OTH)

AF:

0.00

AC:

AN:

59762

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.465

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152262

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74386

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41472

American (AMR)

AF:

0.00

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000192

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.0000941

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68050

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

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:

0.00

Hom.:

ExAC

AF:

0.0000247

AC:

ClinVar

ClinVar submissions as Germline

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.34

CADD

Uncertain

(source)

DANN

Pathogenic

1.0

Eigen

Benign

0.020

Eigen_PC

Benign

0.17

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.89

M_CAP

Benign

0.034

MetaRNN

Benign

0.15

MetaSVM

Benign

-1.0

PhyloP100

6.1

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-0.41

REVEL

Benign

0.048

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

0.0020

Vest4

0.40

MutPred

0.37

Gain of methylation at E848 (P = 0.0086)

MVP

0.64

MPC

0.64

ClinPred

0.94

GERP RS

4.4

gMVP

0.37

Mutation Taster

=87/13

polymorphism

(source)

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

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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