Genetic Variant CCDC85B:p.Cys198Arg (chr11-65891375-T-C) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_006848.3(CCDC85B):c.592T>C(p.Cys198Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000126 in 1,583,370 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000098 ( 0 hom. )

Consequence

CCDC85B
NM_006848.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.52

Variant links:

Genes affected

CCDC85B (HGNC:24926): (coiled-coil domain containing 85B) Hepatitis delta virus (HDV) is a pathogenic human virus whose RNA genome and replication cycle resemble those of plant viroids. Delta-interacting protein A (DIPA), a cellular gene product, has been found to have homology to hepatitis delta virus antigen (HDAg). DIPA interacts with the viral antigen, HDAg, and can affect HDV replication in vitro. [provided by RefSeq, Jul 2008]

CCDC85B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAd4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC85B	NM_006848.3 link	c.592T>C	p.Cys198Arg	missense_variant	Exon 1 of 1	ENST00000312579.4	NP_006839.2	Q15834

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCDC85B	ENST00000312579.4 link	c.592T>C	p.Cys198Arg	missense_variant	Exon 1 of 1	6	NM_006848.3	ENSP00000311695.2		Q15834

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152214

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

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:

0.00

GnomAD3 exomes

AF:

0.0000608

AC:

AN:

197310

Hom.:

AF XY:

0.0000638

AC XY:

AN XY:

109716

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000364

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000415

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000216

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000978

AC:

AN:

1431156

Hom.:

Cov.:

AF XY:

0.0000140

AC XY:

AN XY:

711904

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000150

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:

0.00000727

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74370

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000327

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:

0.00

Alfa

AF:

0.0000540

Hom.:

Bravo

AF:

0.0000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 23, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.592T>C (p.C198R) alteration is located in exon 1 (coding exon 1) of the CCDC85B gene. This alteration results from a T to C substitution at nucleotide position 592, causing the cysteine (C) at amino acid position 198 to be replaced by an arginine (R). 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

AlphaMissense

Pathogenic

0.76

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.18

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.062

Eigen

Uncertain

0.45

Eigen_PC

Uncertain

0.44

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.72

M_CAP

Benign

0.020

MetaRNN

Uncertain

0.46

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.6

PrimateAI

Uncertain

0.77

PROVEAN

Benign

0.63

REVEL

Uncertain

0.31

Sift

Uncertain

0.018

Sift4G

Uncertain

0.019

Polyphen

0.98

Vest4

0.52

MutPred

0.52

Gain of solvent accessibility (P = 1e-04);

MVP

0.51

MPC

3.5

ClinPred

0.20

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.71

gMVP

0.55

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