Genetic Variant BICD2:p.Ser823Arg (chr9-92715253-G-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001003800.2(BICD2):c.2469C>G(p.Ser823Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,916 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S823N) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

BICD2
NM_001003800.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.0760

Publications

0 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:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.106199145).

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BICD2	NM_001003800.2	MANE Select	c.2469C>G	p.Ser823Arg	missense	Exon 7 of 7	NP_001003800.1
	BICD2	NM_015250.4		c.2469C>G	p.Ser823Arg	missense splice_region	Exon 7 of 8	NP_056065.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BICD2	ENST00000356884.11	TSL:1 MANE Select	c.2469C>G	p.Ser823Arg	missense	Exon 7 of 7	ENSP00000349351.6
	BICD2	ENST00000375512.3	TSL:1	c.2469C>G	p.Ser823Arg	missense splice_region	Exon 7 of 8	ENSP00000364662.3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460916

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726794

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44712

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26112

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.00

AC:

AN:

86240

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52658

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111902

Other (OTH)

AF:

0.00

AC:

AN:

60364

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.40

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.47

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.029

Eigen

Benign

-0.29

Eigen_PC

Benign

-0.21

FATHMM_MKL

Benign

0.72

LIST_S2

Benign

0.68

M_CAP

Benign

0.028

MetaRNN

Benign

0.089

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.090

PhyloP100

-0.076

PrimateAI

Uncertain

0.53

PROVEAN

Benign

0.18

REVEL

Benign

0.098

Sift

Benign

0.22

Sift4G

Benign

0.50

Polyphen

0.61

Vest4

0.24

MutPred

0.26

Gain of MoRF binding (P = 0.0013)

MVP

0.47

MPC

1.1

ClinPred

0.57

GERP RS

1.8

Varity_R

0.049

gMVP

0.23

Mutation Taster

=73/27

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

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over