rs1554705506

Positions:

• chr9-92719132-CCTT-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PM4_Supporting

The NM_001003800.2(BICD2):​c.1510_1512del​(p.Lys504del) variant causes a inframe deletion change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: BICD2 NM_001003800.2 inframe_deletion
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.62

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 Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM4: Nonframeshift variant in NON repetitive region in NM_001003800.2. Strenght limited to Supporting due to length of the change: 1aa.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BICD2	NM_001003800.2	c.1510_1512del	p.Lys504del	inframe_deletion	5/7	ENST00000356884.11	NP_001003800.1
BICD2	NM_015250.4	c.1510_1512del	p.Lys504del	inframe_deletion	5/8		NP_056065.1
BICD2	XM_017014551.2	c.1591_1593del	p.Lys531del	inframe_deletion	5/8		XP_016870040.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BICD2	ENST00000356884.11	c.1510_1512del	p.Lys504del	inframe_deletion	5/7	1	NM_001003800.2	ENSP00000349351	A2
BICD2	ENST00000375512.3	c.1510_1512del	p.Lys504del	inframe_deletion	5/8	1		ENSP00000364662	P4

Frequencies

GnomAD3 genomes Cov.: 33

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 33

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

Labcorp Genetics (formerly Invitae), Labcorp

Mar 05, 2021

This variant has not been reported in the literature in individuals with BICD2-related disease. This variant is not present in population databases (ExAC no frequency). This variant, c.1510_1512delAAG, results in the deletion of 1 amino acid of the BICD2 protein (p.Lys504del), but otherwise preserves the integrity of the reading frame. Experimental studies and prediction algorithms are not available for this variant, and the functional significance of the deleted amino acid is currently unknown. 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. -

Computational scores

Source: dbNSFP v4.3

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: rs1554705506; hg19: chr9-95481414;