11-32602977-A-G

Variant names:

• chr11-32602977-A-G
• NM_001008391.4:c.3074T>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001008391.4(CCDC73):​c.3074T>C​(p.Leu1025Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: CCDC73 NM_001008391.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.338
• Publications: 0 publications found

Genes affected

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

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]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.040722996).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC73	NM_001008391.4	c.3074T>C	p.Leu1025Ser	missense_variant	Exon 18 of 18	ENST00000335185.10	NP_001008392.2
EIF3M	NM_006360.6	c.*578A>G		3_prime_UTR_variant	Exon 11 of 11	ENST00000531120.6	NP_006351.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCDC73	ENST00000335185.10	c.3074T>C	p.Leu1025Ser	missense_variant	Exon 18 of 18	2	NM_001008391.4	ENSP00000335325.5
EIF3M	ENST00000531120.6	c.*578A>G		3_prime_UTR_variant	Exon 11 of 11	1	NM_006360.6	ENSP00000436049.1
CCDC73	ENST00000528333.1	c.179T>C	p.Leu60Ser	missense_variant	Exon 2 of 2	3		ENSP00000434365.1
EIF3M	ENST00000524896.5	c.*578A>G		downstream_gene_variant		2		ENSP00000436787.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jan 16, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3074T>C (p.L1025S) alteration is located in exon 18 (coding exon 17) of the CCDC73 gene. This alteration results from a T to C substitution at nucleotide position 3074, causing the leucine (L) at amino acid position 1025 to be replaced by a serine (S). 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	0.10
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.42
CADD	Benign	4.1
DANN	Uncertain	0.99
DEOGEN2	Benign	0.0030	T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.040	N
LIST_S2	Benign	0.30	T
M_CAP	Benign	0.0012	T
MetaRNN	Benign	0.041	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.20	N
PhyloP100		0.34
PrimateAI	Benign	0.26	T
PROVEAN	Benign	-0.69	N
REVEL	Benign	0.031
Sift	Benign	0.21	T
Sift4G	Benign	0.088	T
Polyphen		0.0010	B
Vest4		0.053
MutPred		0.31		Gain of disorder (P = 0.0258);
MVP		0.099
MPC		0.16
ClinPred		0.067	T
GERP RS		0.52
Varity_R		0.041
gMVP		0.040
Mutation Taster		=99/1	polymorphism

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

Other links and lift over

hg19: chr11-32624523;