3-114035046-C-G

Position:

• chr3-114035046-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_020817.2(CCDC191):​c.697G>C​(p.Glu233Gln) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CCDC191 NM_020817.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.65

Genes affected

CCDC191 (HGNC:29272): (coiled-coil domain containing 191)

QTRT2 (HGNC:25771): (queuine tRNA-ribosyltransferase accessory subunit 2) This gene encodes a subunit of tRNA-guanine transglycosylase. tRNA-guanine transglycosylase is a heterodimeric enzyme complex that plays a critical role in tRNA modification by synthesizing the 7-deazaguanosine queuosine, which is found in tRNAs that code for asparagine, aspartic acid, histidine, and tyrosine. The encoded protein may play a role in the queuosine 5'-monophosphate salvage pathway. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Feb 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.32046074).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CCDC191	NM_020817.2	c.697G>C	p.Glu233Gln	missense_variant	6/17	ENST00000295878.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CCDC191	ENST00000295878.8	c.697G>C	p.Glu233Gln	missense_variant	6/17	1	NM_020817.2	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

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 16, 2024

The c.697G>C (p.E233Q) alteration is located in exon 6 (coding exon 6) of the CCDC191 gene. This alteration results from a G to C substitution at nucleotide position 697, causing the glutamic acid (E) at amino acid position 233 to be replaced by a glutamine (Q). 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	0.15
BayesDel_addAF	Benign	-0.031	T
BayesDel_noAF	Benign	-0.28
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.037	T;T;T
Eigen	Uncertain	0.67
Eigen_PC	Uncertain	0.65
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.79	T;T;T
M_CAP	Benign	0.015	T
MetaRNN	Benign	0.27	T;T;T
MetaSVM	Benign	-0.47	T
MutationTaster	Benign	0.65	D;D
PrimateAI	Benign	0.43	T
PROVEAN	Benign	-1.3	N;N;N
REVEL	Benign	0.17
Sift	Benign	0.11	T;D;T
Sift4G	Uncertain	0.018	D;.;D
Polyphen		1.0	D;D;.
Vest4		0.34
MutPred		0.086		Gain of MoRF binding (P = 0.0205);.;.;
MVP		0.50
MPC		0.76
ClinPred		0.98	D
GERP RS		4.9
Varity_R		0.25
gMVP		0.11

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: chr3-113753893;