chr9-92717913-C-G

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 2P and 9B. PP3_ModerateBP6BS1BS2

The NM_001003800.2(BICD2):c.2142G>C(p.Lys714Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000122 in 1,613,564 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

BICD2
NM_001003800.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 0.954

Publications

1 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, Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp

BICD2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.872

BP6

Variant 9-92717913-C-G is Benign according to our data. Variant chr9-92717913-C-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 383686.

BS1

Variant frequency is greater than expected in population nfe. GnomAdExome4 allele frequency = 0.000128 (187/1461334) while in subpopulation NFE AF = 0.000153 (170/1111980). AF 95% confidence interval is 0.000133. There are 0 homozygotes in GnomAdExome4. There are 82 alleles in the male GnomAdExome4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High AC in GnomAd4 at 10 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BICD2	NM_001003800.2 link	c.2142G>C	p.Lys714Asn	missense_variant	Exon 6 of 7	ENST00000356884.11	NP_001003800.1	Q8TD16-2Q96FU2
BICD2	NM_015250.4 link	c.2142G>C	p.Lys714Asn	missense_variant	Exon 6 of 8		NP_056065.1	Q8TD16-1Q96FU2
BICD2	XM_017014551.2 link	c.2223G>C	p.Lys741Asn	missense_variant	Exon 6 of 8		XP_016870040.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BICD2	ENST00000356884.11 link	c.2142G>C	p.Lys714Asn	missense_variant	Exon 6 of 7	1	NM_001003800.2	ENSP00000349351.6		Q8TD16-2
BICD2	ENST00000375512.3 link	c.2142G>C	p.Lys714Asn	missense_variant	Exon 6 of 8	1		ENSP00000364662.3		Q8TD16-1

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152230

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000637

AC:

AN:

251360

AF XY:

0.0000589

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.000114

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000128

AC:

187

AN:

1461334

Hom.:

Cov.:

AF XY:

0.000113

AC XY:

AN XY:

726980

show subpopulations

African (AFR)

AF:

0.0000897

AC:

AN:

33456

American (AMR)

AF:

0.00

AC:

AN:

44712

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26124

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86224

European-Finnish (FIN)

AF:

0.0000936

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5378

European-Non Finnish (NFE)

AF:

0.000153

AC:

170

AN:

1111980

Other (OTH)

AF:

0.000149

AC:

AN:

60344

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.476

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:

0.0000657

AC:

AN:

152230

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74380

show subpopulations

African (AFR)

AF:

0.0000482

AC:

AN:

41464

American (AMR)

AF:

0.00

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000118

AC:

AN:

68038

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

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:

0.000135

Hom.:

Bravo

AF:

0.0000718

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000237

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 12, 2016

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The K714N variant in the BICD2 gene has not been reported previously as a pathogenic variant, nor as a benign variant, to our knowledge. The K714N variant was not observed in approximately 6500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. The K714N variant is a semi-conservative amino acid substitution, which occurs in a region for interaction with RAB6A and the coiled coil region at a position that is conserved across species. In silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. We interpret K714N as a variant of uncertain significance. -

not provided

Uncertain:1

Oct 27, 2022

Mayo Clinic Laboratories, Mayo Clinic

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

BS2 -

Autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures

Benign:1

Nov 11, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.19

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.87

.;D

Eigen

Uncertain

0.56

Eigen_PC

Uncertain

0.52

FATHMM_MKL

Uncertain

0.80

LIST_S2

Pathogenic

0.99

D;D

M_CAP

Uncertain

0.24

MetaRNN

Pathogenic

0.87

D;D

MetaSVM

Benign

-0.38

MutationAssessor

Pathogenic

3.4

M;M

PhyloP100

0.95

PrimateAI

Pathogenic

0.89

PROVEAN

Pathogenic

-4.8

D;D

REVEL

Uncertain

0.45

Sift

Uncertain

0.0010

D;D

Sift4G

Uncertain

0.0020

D;D

Polyphen

0.99

D;D

Vest4

0.89

MutPred

0.65

Loss of ubiquitination at K714 (P = 0.0103);Loss of ubiquitination at K714 (P = 0.0103);

MVP

0.89

MPC

1.6

ClinPred

0.84

GERP RS

4.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.75

gMVP

0.83

Mutation Taster

=30/70

disease causing

(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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over