chr19-1236021-C-T

Position:

• chr19-1236021-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001393918.1(CBARP):​c.80G>A​(p.Trp27*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: CBARP NM_001393918.1 stop_gained
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.215

Genes affected

CBARP (HGNC:28617): (CACN subunit beta associated regulatory protein) Predicted to enable transmembrane transporter binding activity. Predicted to be involved in negative regulation of calcium ion-dependent exocytosis and negative regulation of voltage-gated calcium channel activity. Predicted to be located in synaptic vesicle membrane. Predicted to be integral component of membrane. Predicted to be active in plasma membrane. Predicted to colocalize with growth cone and secretory granule. [provided by Alliance of Genome Resources, Apr 2022]

CBARP (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CBARP	NM_001393918.1	c.80G>A	p.Trp27*	stop_gained	2/10	ENST00000650044.2	NP_001380847.1
CBARP	NM_152769.3	c.80G>A	p.Trp27*	stop_gained	2/9		NP_689982.3
CBARP	XM_017026555.2	c.446G>A	p.Trp149*	stop_gained	2/10		XP_016882044.1
CBARP	XM_017026556.2	c.80G>A	p.Trp27*	stop_gained	2/10		XP_016882045.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CBARP	ENST00000650044.2	c.80G>A	p.Trp27*	stop_gained	2/10		NM_001393918.1	ENSP00000497208.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1392616 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 685664

Gnomad4 AFR exome AF: 0.00

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: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 21, 2024

The c.80G>A (p.R27H) alteration is located in exon 2 (coding exon 1) of the CBARP gene. This alteration results from a G to A substitution at nucleotide position 80, causing the arginine (R) at amino acid position 27 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.53	D
BayesDel_noAF	Pathogenic	0.53
CADD	Pathogenic	39
DANN	Uncertain	1.0
Eigen	Uncertain	0.60
Eigen_PC	Uncertain	0.42
FATHMM_MKL	Uncertain	0.81	D
Vest4		0.062
GERP RS		4.2

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-1236020;