chr9-92729208-T-C

Variant names:

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_001003800.2(BICD2):c.269A>G(p.Lys90Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00553 in 1,614,180 control chromosomes in the GnomAD database, including 35 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0043 ( 3 hom., cov: 33)

Exomes 𝑓: 0.0057 ( 32 hom. )

Consequence

BICD2
NM_001003800.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:9

Conservation

PhyloP100: 1.66

Publications

9 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: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, G2P, Ambry Genetics, Orphanet

BICD2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.009992003).

BP6

Variant 9-92729208-T-C is Benign according to our data. Variant chr9-92729208-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 235235.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00434 (661/152340) while in subpopulation NFE AF = 0.0072 (490/68034). AF 95% confidence interval is 0.00668. There are 3 homozygotes in GnomAd4. There are 322 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High AC in GnomAd4 at 661 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.269A>G	p.Lys90Arg	missense	Exon 2 of 7	NP_001003800.1	Q8TD16-2
	BICD2	NM_015250.4		c.269A>G	p.Lys90Arg	missense	Exon 2 of 8	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.269A>G	p.Lys90Arg	missense	Exon 2 of 7	ENSP00000349351.6	Q8TD16-2
	BICD2	ENST00000375512.3	TSL:1	c.269A>G	p.Lys90Arg	missense	Exon 2 of 8	ENSP00000364662.3	Q8TD16-1

Frequencies

GnomAD3 genomes

AF:

0.00435

AC:

662

AN:

152222

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00111

Gnomad AMI

AF:

0.00110

Gnomad AMR

AF:

0.000981

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00414

Gnomad FIN

AF:

0.00744

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00720

Gnomad OTH

AF:

0.00383

GnomAD2 exomes

AF:

0.00459

AC:

1151

AN:

251024

AF XY:

0.00480

show subpopulations

Gnomad AFR exome

AF:

0.000862

Gnomad AMR exome

AF:

0.00142

Gnomad ASJ exome

AF:

0.000696

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00711

Gnomad NFE exome

AF:

0.00703

Gnomad OTH exome

AF:

0.00359

GnomAD4 exome

AF:

0.00566

AC:

8269

AN:

1461840

Hom.:

Cov.:

AF XY:

0.00565

AC XY:

4106

AN XY:

727220

show subpopulations

African (AFR)

AF:

0.000538

AC:

AN:

33480

American (AMR)

AF:

0.00148

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.000842

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00387

AC:

334

AN:

86258

European-Finnish (FIN)

AF:

0.00860

AC:

459

AN:

53372

Middle Eastern (MID)

AF:

0.00139

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00641

AC:

7124

AN:

1112008

Other (OTH)

AF:

0.00394

AC:

238

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

Heterozygous variant carriers

501

1002

1503

2004

2505

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

246

492

738

984

1230

<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:

0.00434

AC:

661

AN:

152340

Hom.:

Cov.:

AF XY:

0.00432

AC XY:

322

AN XY:

74504

show subpopulations

African (AFR)

AF:

0.00111

AC:

AN:

41574

American (AMR)

AF:

0.000980

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3472

East Asian (EAS)

AF:

0.000193

AC:

AN:

5184

South Asian (SAS)

AF:

0.00414

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00744

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00720

AC:

490

AN:

68034

Other (OTH)

AF:

0.00379

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

116

154

193

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome 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

Alfa

AF:

0.00602

Hom.:

Bravo

AF:

0.00369

TwinsUK

AF:

0.00405

AC:

ALSPAC

AF:

0.00597

AC:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00581

AC:

ExAC

AF:

0.00470

AC:

571

Asia WGS

AF:

0.00115

AC:

AN:

3478

EpiCase

AF:

0.00513

EpiControl

AF:

0.00581

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (4)

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

BICD2-related disorder (1)

Hereditary spastic paraplegia (1)

Inborn genetic diseases (1)

Neuronopathy, distal hereditary motor, autosomal dominant (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.068

BayesDel_addAF

Benign

-0.63

BayesDel_noAF

Benign

-0.68

CADD

Benign

(source)

DANN

Benign

0.79

DEOGEN2

Benign

0.25

Eigen

Benign

-0.44

Eigen_PC

Benign

-0.23

FATHMM_MKL

Benign

0.64

LIST_S2

Benign

0.84

M_CAP

Benign

0.0078

MetaRNN

Benign

0.010

MetaSVM

Benign

-1.1

MutationAssessor

Benign

-0.36

PhyloP100

1.7

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-0.52

REVEL

Benign

0.051

Sift

Benign

0.71

Sift4G

Benign

0.66

Polyphen

0.0010

Vest4

0.21

MVP

0.74

MPC

0.44

ClinPred

0.0066

GERP RS

4.1

Varity_R

0.072

gMVP

0.093

Mutation Taster

=98/2

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