Genetic Variant CIB2:c.543-30C>T (chr15-78105362-G-A) – ACMG Classification: Benign (-14 pts)

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBS1BS2

The NM_006383.4(CIB2):c.543-30C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00163 in 1,613,814 control chromosomes in the GnomAD database, including 10 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). There are indicators that this mutation may affect the branch point..

Frequency

Genomes: 𝑓 0.00086 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0017 ( 10 hom. )

Consequence

CIB2
NM_006383.4 intron

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.498

Variant links:

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]

CIB2 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

BP4

This position, referring to a specific DNA site, is a probable branch point but rather VUS (scored 4 / 10). The score ranges from 0 to 10, with values ≤3 considered benign and >5 classified as pathogenic. Computational evidence support a benign effect (BayesDel_noAF=-0.67).

BP6

Variant 15-78105362-G-A is Benign according to our data. Variant chr15-78105362-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 1216195.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00086 (131/152272) while in subpopulation NFE AF= 0.00166 (113/68014). AF 95% confidence interval is 0.00141. There are 0 homozygotes in gnomad4. There are 47 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 10 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CIB2	NM_006383.4 link	c.543-30C>T		intron_variant	Intron 5 of 5	ENST00000258930.8	NP_006374.1	O75838-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CIB2	ENST00000258930.8 link	c.543-30C>T		intron_variant	Intron 5 of 5	1	NM_006383.4	ENSP00000258930.3		O75838-1

Frequencies

GnomAD3 genomes

AF:

0.000861

AC:

131

AN:

152154

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.00166

Gnomad OTH

AF:

0.00239

GnomAD3 exomes

AF:

0.000651

AC:

163

AN:

250458

Hom.:

AF XY:

0.000665

AC XY:

AN XY:

135396

show subpopulations

Gnomad AFR exome

AF:

0.000433

Gnomad AMR exome

AF:

0.000232

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000164

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00123

Gnomad OTH exome

AF:

0.000653

GnomAD4 exome

AF:

0.00171

AC:

2494

AN:

1461542

Hom.:

Cov.:

AF XY:

0.00169

AC XY:

1228

AN XY:

727058

show subpopulations

Gnomad4 AFR exome

AF:

0.000239

Gnomad4 AMR exome

AF:

0.000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000116

Gnomad4 FIN exome

AF:

0.0000375

Gnomad4 NFE exome

AF:

0.00213

Gnomad4 OTH exome

AF:

0.00162

GnomAD4 genome

AF:

0.000860

AC:

131

AN:

152272

Hom.:

Cov.:

AF XY:

0.000631

AC XY:

AN XY:

74442

show subpopulations

Gnomad4 AFR

AF:

0.000241

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00166

Gnomad4 OTH

AF:

0.00237

Alfa

AF:

0.000897

Hom.:

Bravo

AF:

0.000820

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Benign:1

Oct 30, 2020

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.67

CADD

Benign

8.9

DANN

Benign

0.81

BranchPoint Hunter

4.0

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