Genetic Variant CCDC73:p.Lys1074Gln (chr11-32602831-T-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001008391.4(CCDC73):c.3220A>C(p.Lys1074Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000221 in 1,446,262 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

CCDC73
NM_001008391.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.506

Variant links:

Genes affected

CCDC73 (HGNC:23261): (coiled-coil domain containing 73)

CCDC73 links:

EIF3M (HGNC:24460): (eukaryotic translation initiation factor 3 subunit M) This gene encodes a protein that is part of the eurkaryotic translation initiation factor 3 complete (eIF-3) required for protein synthesis. Elevated levels of the encoded protein are present in cancer cell lines. Inactivation of the encoded protein has been shown to interfere with translation of herpes virus mRNAs by preventing the association of mRNAs with the ribosomes. A pseudogene of this gene is located on the X chromosome. [provided by RefSeq, Dec 2011]

EIF3M links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.049906015).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC73	NM_001008391.4 link	c.3220A>C	p.Lys1074Gln	missense_variant	Exon 18 of 18	ENST00000335185.10	NP_001008392.2	Q6ZRK6-1
EIF3M	NM_006360.6 link	c.*432T>G		3_prime_UTR_variant	Exon 11 of 11	ENST00000531120.6	NP_006351.2	Q7L2H7-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CCDC73	ENST00000335185.10 link	c.3220A>C	p.Lys1074Gln	missense_variant	Exon 18 of 18	2	NM_001008391.4	ENSP00000335325.5	Q6ZRK6-1
EIF3M	ENST00000531120.6 link	c.*432T>G		3_prime_UTR_variant	Exon 11 of 11	1	NM_006360.6	ENSP00000436049.1	Q7L2H7-1
CCDC73	ENST00000528333.1 link	c.325A>C	p.Lys109Gln	missense_variant	Exon 2 of 2	3		ENSP00000434365.1	H0YDV2
EIF3M	ENST00000524896.5 link	c.*432T>G		downstream_gene_variant		2		ENSP00000436787.1	Q7L2H7-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000130

AC:

AN:

231460

Hom.:

AF XY:

0.0000159

AC XY:

AN XY:

125518

show subpopulations

Gnomad AFR exome

AF:

0.0000677

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000191

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000221

AC:

AN:

1446262

Hom.:

Cov.:

AF XY:

0.0000278

AC XY:

AN XY:

718952

show subpopulations

Gnomad4 AFR exome

AF:

0.0000309

Gnomad4 AMR exome

AF:

0.00

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:

0.0000271

Gnomad4 OTH exome

AF:

0.0000168

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000830

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 11, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3220A>C (p.K1074Q) alteration is located in exon 18 (coding exon 17) of the CCDC73 gene. This alteration results from a A to C substitution at nucleotide position 3220, causing the lysine (K) at amino acid position 1074 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

0.12

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.47

CADD

Benign

DANN

Benign

0.90

DEOGEN2

Benign

0.010

Eigen

Benign

-0.68

Eigen_PC

Benign

-0.81

FATHMM_MKL

Benign

0.51

LIST_S2

Benign

0.45

M_CAP

Benign

0.0016

MetaRNN

Benign

0.050

MetaSVM

Benign

-0.94

MutationAssessor

Benign

1.8

PrimateAI

Benign

0.42

PROVEAN

Benign

-0.46

REVEL

Benign

0.025

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.043

Polyphen

0.21

Vest4

0.063

MutPred

0.14

Loss of MoRF binding (P = 0.025);

MVP

0.19

MPC

0.46

ClinPred

0.25

GERP RS

0.73

Varity_R

0.31

gMVP

0.14

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