17-34939240-G-T

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_006584.4(CCT6B):c.1156C>A(p.Gln386Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,613,632 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

CCT6B
NM_006584.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.03

Variant links:

Genes affected

CCT6B (HGNC:1621): (chaperonin containing TCP1 subunit 6B) This gene encodes a molecular chaperone that is a member of the chaperonin-containing TCP1 complex (CCT), also known as the TCP1 ring complex (TRiC). This complex consists of two identical stacked rings, each containing eight different proteins. Unfolded polypeptides enter the central cavity of the complex and are folded in an ATP-dependent manner. The complex folds various proteins, including actin and tubulin. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2015]

CCT6B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.776

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCT6B	NM_006584.4 link	c.1156C>A	p.Gln386Lys	missense_variant	Exon 10 of 14	ENST00000314144.10	NP_006575.2	Q92526-1
CCT6B	NM_001193529.3 link	c.1045C>A	p.Gln349Lys	missense_variant	Exon 9 of 13		NP_001180458.1	Q92526-3
CCT6B	NM_001193530.2 link	c.1021C>A	p.Gln341Lys	missense_variant	Exon 9 of 13		NP_001180459.1	Q92526-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CCT6B	ENST00000314144.10 link	c.1156C>A	p.Gln386Lys	missense_variant	Exon 10 of 14	1	NM_006584.4	ENSP00000327191.5	Q92526-1
CCT6B	ENST00000421975.7 link	c.1045C>A	p.Gln349Lys	missense_variant	Exon 9 of 13	1		ENSP00000398044.3	Q92526-3
CCT6B	ENST00000436961.7 link	c.1021C>A	p.Gln341Lys	missense_variant	Exon 9 of 13	2		ENSP00000400917.3	Q92526-2
CCT6B	ENST00000577307.1 link	n.2798C>A		non_coding_transcript_exon_variant	Exon 4 of 8	5

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152142

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000159

AC:

AN:

251380

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135852

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000131

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000130

AC:

AN:

1461490

Hom.:

Cov.:

AF XY:

0.0000179

AC XY:

AN XY:

727074

show subpopulations

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:

0.000197

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.00e-7

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152142

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74300

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 09, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1156C>A (p.Q386K) alteration is located in exon 10 (coding exon 10) of the CCT6B gene. This alteration results from a C to A substitution at nucleotide position 1156, causing the glutamine (Q) at amino acid position 386 to be replaced by a lysine (K). 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

Benign

0.25

BayesDel_addAF

Benign

-0.10

BayesDel_noAF

Benign

-0.14

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.36

.;T;.

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.61

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.98

D;D;D

M_CAP

Benign

0.012

MetaRNN

Pathogenic

0.78

D;D;D

MetaSVM

Benign

-0.63

MutationAssessor

Pathogenic

3.9

.;H;.

PrimateAI

Benign

0.47

PROVEAN

Uncertain

-3.6

D;D;D

REVEL

Uncertain

0.41

Sift

Pathogenic

0.0

D;D;D

Sift4G

Uncertain

0.055

T;D;D

Polyphen

0.78

.;P;.

Vest4

0.66

MutPred

0.76

.;Gain of MoRF binding (P = 0.0391);.;

MVP

0.12

MPC

0.16

ClinPred

0.98

GERP RS

4.5

Varity_R

0.94

gMVP

0.81

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