15-78105377-G-A

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 2P and 10B. PM2 BP4_Strong BP6_Moderate BS1

The NM_006383.4(CIB2):c.543-45C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000142 in 1,612,902 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 Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.00064 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000090 (0 hom.)
• Consequence: CIB2 NM_006383.4 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.413

Genes affected

CIB2 (HGNC:24579): (calcium and integrin binding family member 2) The protein encoded by this gene is similar to that of KIP/CIB, calcineurin B, and calmodulin. The encoded protein is a calcium-binding regulatory protein that interacts with DNA-dependent protein kinase catalytic subunits (DNA-PKcs), and it is involved in photoreceptor cell maintenance. Mutations in this gene cause deafness, autosomal recessive, 48 (DFNB48), and also Usher syndrome 1J (USH1J). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2014]

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 15-78105377-G-A is Benign according to our data. Variant chr15-78105377-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 1216540.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000644 (98/152230) while in subpopulation AFR AF= 0.00229 (95/41534). AF 95% confidence interval is 0.00191. There are 0 homozygotes in gnomad4. There are 48 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CIB2	NM_006383.4	c.543-45C>T		intron_variant		ENST00000258930.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CIB2	ENST00000258930.8	c.543-45C>T		intron_variant		1	NM_006383.4	P1

Frequencies

GnomAD3 genomes AF: 0.000638 AC: 97 AN: 152112 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00227

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

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: 0.0000147

Gnomad OTH AF: 0.000478

GnomAD3 exomes AF: 0.000153 AC: 38 AN: 248502 Hom.: 0 AF XY: 0.000104 AC XY: 14 AN XY: 134408

Gnomad AFR exome AF: 0.00194

Gnomad AMR exome AF: 0.0000291

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000329

Gnomad FIN exome AF: 0.0000470

Gnomad NFE exome AF: 0.0000357

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000897 AC: 131 AN: 1460672 Hom.: 0 Cov.: 30 AF XY: 0.0000867 AC XY: 63 AN XY: 726524

Gnomad4 AFR exome AF: 0.00191

Gnomad4 AMR exome AF: 0.0000448

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.0000232

Gnomad4 FIN exome AF: 0.0000188

Gnomad4 NFE exome AF: 0.0000396

Gnomad4 OTH exome AF: 0.000232

GnomAD4 genome AF: 0.000644 AC: 98 AN: 152230 Hom.: 0 Cov.: 32 AF XY: 0.000645 AC XY: 48 AN XY: 74428

Gnomad4 AFR AF: 0.00229

Gnomad4 AMR AF: 0.0000654

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.000473

Alfa AF: 0.000130 Hom.: 0

Bravo AF: 0.000661

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Dec 05, 2020

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
Cadd	Benign	2.0
Dann	Benign	0.67

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: rs202201074; hg19: chr15-78397719;