rs768524403

chr9-92715257-G-Achr9-92715257-G-C

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 1P and 6B. PP2 BP4_Moderate BS2

The NM_001003800.2(BICD2):c.2465C>T(p.Pro822Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000198 in 1,612,948 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000039 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000018 (0 hom.)
• Consequence: BICD2 NM_001003800.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.61

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]

ACMG classification

Verdict is Likely_benign. Variant got -5 ACMG points.

• PP2: Missense variant where missense usually causes diseases, BICD2
• BP4: Computational evidence support a benign effect (MetaRNN=0.26325974).
• BS2: High AC in GnomAd at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BICD2	NM_001003800.2	c.2465C>T	p.Pro822Leu	missense_variant	7/7	ENST00000356884.11
BICD2	NM_015250.4	c.2465C>T	p.Pro822Leu	missense_variant	7/8
BICD2	XM_017014551.2	c.2546C>T	p.Pro849Leu	missense_variant	7/8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BICD2	ENST00000356884.11	c.2465C>T	p.Pro822Leu	missense_variant	7/7	1	NM_001003800.2	A2
BICD2	ENST00000375512.3	c.2465C>T	p.Pro822Leu	missense_variant	7/8	1		P4

Frequencies

GnomAD3 genomes AF: 0.0000394 AC: 6 AN: 152246 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

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: 0.000471

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000441 AC: 11 AN: 249172 Hom.: 0 AF XY: 0.0000370 AC XY: 5 AN XY: 135250

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 SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.000419

Gnomad NFE exome AF: 0.00000892

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000178 AC: 26 AN: 1460702 Hom.: 0 Cov.: 32 AF XY: 0.0000206 AC XY: 15 AN XY: 726672

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.000248

Gnomad4 NFE exome AF: 0.00000809

Gnomad4 OTH exome AF: 0.0000331

GnomAD4 genome AF: 0.0000394 AC: 6 AN: 152246 Hom.: 0 Cov.: 33 AF XY: 0.0000403 AC XY: 3 AN XY: 74378

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.000471

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000563 Hom.: 0

Bravo AF: 0.0000189

ExAC AF: 0.0000165 AC: 2

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Nov 15, 2022

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt BICD2 protein function. ClinVar contains an entry for this variant (Variation ID: 567197). This variant has not been reported in the literature in individuals affected with BICD2-related conditions. This variant is present in population databases (rs768524403, gnomAD 0.03%). This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 822 of the BICD2 protein (p.Pro822Leu). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.067	T
BayesDel_noAF	Benign	-0.24
Cadd	Pathogenic	26
Dann	Uncertain	1.0
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.78	T;T
M_CAP	Uncertain	0.13	D
MetaRNN	Benign	0.26	T;T
MetaSVM	Benign	-0.60	T
MutationAssessor	Uncertain	2.0	M;M
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.60	T
PROVEAN	Uncertain	-4.1	D;D
REVEL	Benign	0.24
Sift	Uncertain	0.0040	D;D
Sift4G	Uncertain	0.0040	D;D
Polyphen		0.94	P;P
Vest4		0.34
MutPred		0.26		Loss of relative solvent accessibility (P = 0.0186);Loss of relative solvent accessibility (P = 0.0186);
MVP		0.78
MPC		1.3
ClinPred		0.64	D
GERP RS		5.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.28
gMVP		0.28

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

Other links and lift over

dbSNP: rs768524403; hg19: chr9-95477539; COSMIC: COSV63550017;