rs777986224

Positions:

chr9-92717913-C-G

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 5P and 9B. PM1PP2PP3_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

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM1

In a coiled_coil_region (size 142) in uniprot entity BICD2_HUMAN there are 6 pathogenic changes around while only 1 benign (86%) in NM_001003800.2

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), BICD2. . Gene score misZ 2.205 (greater than the threshold 3.09). Trascript score misZ 3.1082 (greater than threshold 3.09). GenCC has associacion of gene with autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures.

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 id is 383686.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=2, Benign=1}.

BS1

Variant frequency is greater than expected in population nfe. gnomad4_exome 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 gnomad4_exome. There are 82 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck.

BS2

High AC in GnomAd4 at 10 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BICD2	NM_001003800.2 linkuse as main transcript	c.2142G>C	p.Lys714Asn	missense_variant	6/7	ENST00000356884.11	NP_001003800.1	Q8TD16-2Q96FU2
BICD2	NM_015250.4 linkuse as main transcript	c.2142G>C	p.Lys714Asn	missense_variant	6/8		NP_056065.1	Q8TD16-1Q96FU2
BICD2	XM_017014551.2 linkuse as main transcript	c.2223G>C	p.Lys741Asn	missense_variant	6/8		XP_016870040.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BICD2	ENST00000356884.11 linkuse as main transcript	c.2142G>C	p.Lys714Asn	missense_variant	6/7	1	NM_001003800.2	ENSP00000349351.6		Q8TD16-2
BICD2	ENST00000375512.3 linkuse as main transcript	c.2142G>C	p.Lys714Asn	missense_variant	6/8	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

GnomAD3 exomes

AF:

0.0000637

AC:

AN:

251360

Hom.:

AF XY:

0.0000589

AC XY:

AN XY:

135850

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 SAS 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

Gnomad4 AFR exome

AF:

0.0000897

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000936

Gnomad4 NFE exome

AF:

0.000153

Gnomad4 OTH exome

AF:

0.000149

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152230

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74380

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.00

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

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Mar 12, 2016

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

Uncertain significance, criteria provided, single submitter

clinical testing

Mayo Clinic Laboratories, Mayo Clinic

Oct 27, 2022

BS2 -

Autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 24, 2023

- -

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

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

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

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over